./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/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 cd6d4490a7412402195d3193de0347508566f7c8 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 11:58:29,568 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:58:29,569 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:58:29,577 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:58:29,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:58:29,578 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:58:29,579 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:58:29,581 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:58:29,582 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:58:29,583 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:58:29,584 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:58:29,584 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:58:29,585 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:58:29,585 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:58:29,586 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:58:29,586 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:58:29,587 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:58:29,588 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:58:29,589 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:58:29,590 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:58:29,591 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:58:29,592 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:58:29,594 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:58:29,594 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:58:29,595 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:58:29,596 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:58:29,596 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:58:29,597 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:58:29,597 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:58:29,598 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:58:29,598 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:58:29,599 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:58:29,599 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:58:29,599 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:58:29,600 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:58:29,601 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:58:29,601 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 11:58:29,609 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:58:29,609 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:58:29,610 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 11:58:29,610 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 11:58:29,611 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 11:58:29,611 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 11:58:29,611 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 11:58:29,611 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:58:29,612 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:58:29,612 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:58:29,612 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:58:29,612 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:58:29,612 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 11:58:29,612 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:58:29,613 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 11:58:29,613 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:58:29,613 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:58:29,613 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 11:58:29,613 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:58:29,613 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:58:29,613 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:58:29,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 11:58:29,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:58:29,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:58:29,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:58:29,614 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 11:58:29,614 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 11:58:29,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:58:29,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 11:58:29,615 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_dec40a67-0ec3-42e6-b242-2988d4d8633f/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 -> cd6d4490a7412402195d3193de0347508566f7c8 [2018-11-10 11:58:29,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:58:29,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:58:29,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:58:29,656 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:58:29,656 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:58:29,657 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c [2018-11-10 11:58:29,708 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/data/df96dfe99/491be22ce40749c3ae1c94dd9da0bfa3/FLAG745a38f46 [2018-11-10 11:58:30,084 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:58:30,084 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c [2018-11-10 11:58:30,089 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/data/df96dfe99/491be22ce40749c3ae1c94dd9da0bfa3/FLAG745a38f46 [2018-11-10 11:58:30,101 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/data/df96dfe99/491be22ce40749c3ae1c94dd9da0bfa3 [2018-11-10 11:58:30,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:58:30,106 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 11:58:30,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:58:30,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:58:30,110 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:58:30,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:58:30" (1/1) ... [2018-11-10 11:58:30,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31137421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:30, skipping insertion in model container [2018-11-10 11:58:30,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:58:30" (1/1) ... [2018-11-10 11:58:30,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:58:30,138 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:58:30,249 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:58:30,252 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:58:30,264 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:58:30,273 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:58:30,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:30 WrapperNode [2018-11-10 11:58:30,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:58:30,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:58:30,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:58:30,274 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:58:30,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:30" (1/1) ... [2018-11-10 11:58:30,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:30" (1/1) ... [2018-11-10 11:58:30,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:30" (1/1) ... [2018-11-10 11:58:30,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:30" (1/1) ... [2018-11-10 11:58:30,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:30" (1/1) ... [2018-11-10 11:58:30,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:30" (1/1) ... [2018-11-10 11:58:30,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:30" (1/1) ... [2018-11-10 11:58:30,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:58:30,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:58:30,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:58:30,293 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:58:30,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:58:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 11:58:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:58:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2018-11-10 11:58:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2018-11-10 11:58:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 11:58:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 11:58:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 11:58:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2018-11-10 11:58:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2018-11-10 11:58:30,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 11:58:30,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 11:58:30,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:58:30,475 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:58:30,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:58:30 BoogieIcfgContainer [2018-11-10 11:58:30,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:58:30,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 11:58:30,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 11:58:30,478 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 11:58:30,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:58:30" (1/3) ... [2018-11-10 11:58:30,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7ccf92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:58:30, skipping insertion in model container [2018-11-10 11:58:30,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:30" (2/3) ... [2018-11-10 11:58:30,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7ccf92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:58:30, skipping insertion in model container [2018-11-10 11:58:30,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:58:30" (3/3) ... [2018-11-10 11:58:30,482 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8_true-unreach-call_true-termination.c [2018-11-10 11:58:30,492 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 11:58:30,500 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 11:58:30,515 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 11:58:30,537 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 11:58:30,538 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 11:58:30,538 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 11:58:30,538 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 11:58:30,539 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:58:30,539 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:58:30,539 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 11:58:30,539 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:58:30,539 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 11:58:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-11-10 11:58:30,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 11:58:30,560 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:30,561 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:30,563 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:30,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2018-11-10 11:58:30,570 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:30,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:30,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:30,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:30,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:30,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:58:30,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 11:58:30,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 11:58:30,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 11:58:30,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 11:58:30,695 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-11-10 11:58:30,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:30,763 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-11-10 11:58:30,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 11:58:30,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-10 11:58:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:30,772 INFO L225 Difference]: With dead ends: 44 [2018-11-10 11:58:30,772 INFO L226 Difference]: Without dead ends: 30 [2018-11-10 11:58:30,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 11:58:30,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-10 11:58:30,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-10 11:58:30,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 11:58:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-10 11:58:30,808 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2018-11-10 11:58:30,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:30,809 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-10 11:58:30,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 11:58:30,809 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-10 11:58:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 11:58:30,810 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:30,810 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:30,810 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:30,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:30,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2018-11-10 11:58:30,811 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:30,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:30,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:30,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:30,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:30,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:58:30,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 11:58:30,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 11:58:30,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 11:58:30,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 11:58:30,857 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2018-11-10 11:58:30,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:30,914 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2018-11-10 11:58:30,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 11:58:30,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-10 11:58:30,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:30,915 INFO L225 Difference]: With dead ends: 36 [2018-11-10 11:58:30,916 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 11:58:30,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 11:58:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 11:58:30,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-10 11:58:30,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 11:58:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-10 11:58:30,923 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2018-11-10 11:58:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:30,923 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-10 11:58:30,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 11:58:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-10 11:58:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 11:58:30,925 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:30,925 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:30,925 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:30,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:30,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2018-11-10 11:58:30,925 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:30,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:30,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:30,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:30,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 11:58:30,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:30,989 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:30,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:31,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 11:58:31,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:31,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2018-11-10 11:58:31,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 11:58:31,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 11:58:31,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-10 11:58:31,094 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 9 states. [2018-11-10 11:58:31,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:31,237 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2018-11-10 11:58:31,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 11:58:31,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-11-10 11:58:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:31,239 INFO L225 Difference]: With dead ends: 58 [2018-11-10 11:58:31,239 INFO L226 Difference]: Without dead ends: 34 [2018-11-10 11:58:31,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-10 11:58:31,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-10 11:58:31,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-11-10 11:58:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-10 11:58:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2018-11-10 11:58:31,247 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2018-11-10 11:58:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:31,247 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2018-11-10 11:58:31,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 11:58:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2018-11-10 11:58:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 11:58:31,249 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:31,249 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:31,249 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:31,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:31,250 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2018-11-10 11:58:31,250 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:31,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:31,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:31,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:31,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 11:58:31,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:31,323 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:31,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:31,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 11:58:31,371 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:31,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-10 11:58:31,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 11:58:31,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 11:58:31,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 11:58:31,372 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2018-11-10 11:58:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:31,453 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2018-11-10 11:58:31,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 11:58:31,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-11-10 11:58:31,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:31,455 INFO L225 Difference]: With dead ends: 43 [2018-11-10 11:58:31,455 INFO L226 Difference]: Without dead ends: 39 [2018-11-10 11:58:31,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-10 11:58:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-10 11:58:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2018-11-10 11:58:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-10 11:58:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-11-10 11:58:31,462 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 27 [2018-11-10 11:58:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:31,463 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-10 11:58:31,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 11:58:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2018-11-10 11:58:31,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 11:58:31,464 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:31,464 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:31,464 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:31,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:31,465 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2018-11-10 11:58:31,465 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:31,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:31,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:31,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:31,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 11:58:31,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:31,522 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:31,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:31,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 11:58:31,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:31,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 10 [2018-11-10 11:58:31,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 11:58:31,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 11:58:31,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-10 11:58:31,605 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 10 states. [2018-11-10 11:58:31,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:31,751 INFO L93 Difference]: Finished difference Result 70 states and 100 transitions. [2018-11-10 11:58:31,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 11:58:31,752 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2018-11-10 11:58:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:31,753 INFO L225 Difference]: With dead ends: 70 [2018-11-10 11:58:31,753 INFO L226 Difference]: Without dead ends: 39 [2018-11-10 11:58:31,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-10 11:58:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-10 11:58:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-10 11:58:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-10 11:58:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-11-10 11:58:31,761 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 39 [2018-11-10 11:58:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:31,761 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-10 11:58:31,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 11:58:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2018-11-10 11:58:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-10 11:58:31,762 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:31,763 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:31,763 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:31,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:31,763 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2018-11-10 11:58:31,763 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:31,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:31,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:31,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:31,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-10 11:58:31,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:31,809 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:31,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:31,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 11:58:31,882 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:31,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2018-11-10 11:58:31,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 11:58:31,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 11:58:31,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-10 11:58:31,884 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 10 states. [2018-11-10 11:58:31,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:31,984 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2018-11-10 11:58:31,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 11:58:31,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-11-10 11:58:31,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:31,987 INFO L225 Difference]: With dead ends: 61 [2018-11-10 11:58:31,987 INFO L226 Difference]: Without dead ends: 57 [2018-11-10 11:58:31,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-10 11:58:31,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-10 11:58:31,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2018-11-10 11:58:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-10 11:58:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2018-11-10 11:58:31,997 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 40 [2018-11-10 11:58:31,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:31,997 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2018-11-10 11:58:31,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 11:58:31,997 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2018-11-10 11:58:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-10 11:58:32,000 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:32,000 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:32,000 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:32,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:32,001 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2018-11-10 11:58:32,001 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:32,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:32,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:32,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:32,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-10 11:58:32,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:32,067 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:32,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:32,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-10 11:58:32,153 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:32,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 10 [2018-11-10 11:58:32,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 11:58:32,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 11:58:32,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-10 11:58:32,155 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand 10 states. [2018-11-10 11:58:32,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:32,265 INFO L93 Difference]: Finished difference Result 71 states and 118 transitions. [2018-11-10 11:58:32,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 11:58:32,266 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-11-10 11:58:32,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:32,267 INFO L225 Difference]: With dead ends: 71 [2018-11-10 11:58:32,267 INFO L226 Difference]: Without dead ends: 67 [2018-11-10 11:58:32,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-10 11:58:32,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-10 11:58:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49. [2018-11-10 11:58:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-10 11:58:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2018-11-10 11:58:32,279 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 54 [2018-11-10 11:58:32,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:32,280 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2018-11-10 11:58:32,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 11:58:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2018-11-10 11:58:32,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-10 11:58:32,282 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:32,282 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:32,282 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:32,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:32,283 INFO L82 PathProgramCache]: Analyzing trace with hash 671849284, now seen corresponding path program 2 times [2018-11-10 11:58:32,283 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:32,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:32,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:32,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:32,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-10 11:58:32,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:32,381 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:32,389 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 11:58:32,416 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 11:58:32,416 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:58:32,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 12 proven. 63 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-11-10 11:58:32,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:32,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2018-11-10 11:58:32,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 11:58:32,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 11:58:32,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-11-10 11:58:32,515 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 16 states. [2018-11-10 11:58:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:32,882 INFO L93 Difference]: Finished difference Result 146 states and 299 transitions. [2018-11-10 11:58:32,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-10 11:58:32,882 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2018-11-10 11:58:32,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:32,884 INFO L225 Difference]: With dead ends: 146 [2018-11-10 11:58:32,884 INFO L226 Difference]: Without dead ends: 103 [2018-11-10 11:58:32,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2018-11-10 11:58:32,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-10 11:58:32,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 87. [2018-11-10 11:58:32,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-10 11:58:32,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 157 transitions. [2018-11-10 11:58:32,905 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 157 transitions. Word has length 80 [2018-11-10 11:58:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:32,906 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 157 transitions. [2018-11-10 11:58:32,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 11:58:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 157 transitions. [2018-11-10 11:58:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-10 11:58:32,909 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:32,909 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:32,909 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:32,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:32,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2012686571, now seen corresponding path program 2 times [2018-11-10 11:58:32,910 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:32,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:32,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:32,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:32,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 78 proven. 181 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2018-11-10 11:58:33,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:33,082 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:33,088 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 11:58:33,129 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 11:58:33,129 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:58:33,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 41 proven. 262 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2018-11-10 11:58:33,281 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:33,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2018-11-10 11:58:33,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 11:58:33,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 11:58:33,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2018-11-10 11:58:33,283 INFO L87 Difference]: Start difference. First operand 87 states and 157 transitions. Second operand 18 states. [2018-11-10 11:58:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:33,787 INFO L93 Difference]: Finished difference Result 232 states and 520 transitions. [2018-11-10 11:58:33,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-10 11:58:33,787 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 175 [2018-11-10 11:58:33,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:33,789 INFO L225 Difference]: With dead ends: 232 [2018-11-10 11:58:33,789 INFO L226 Difference]: Without dead ends: 129 [2018-11-10 11:58:33,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2018-11-10 11:58:33,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-11-10 11:58:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 118. [2018-11-10 11:58:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-11-10 11:58:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 184 transitions. [2018-11-10 11:58:33,805 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 184 transitions. Word has length 175 [2018-11-10 11:58:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:33,806 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 184 transitions. [2018-11-10 11:58:33,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 11:58:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 184 transitions. [2018-11-10 11:58:33,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-11-10 11:58:33,812 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:33,812 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 22, 22, 22, 19, 16, 16, 16, 16, 16, 16, 16, 14, 11, 11, 11, 11, 11, 11, 11, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:33,812 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:33,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:33,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1497005454, now seen corresponding path program 1 times [2018-11-10 11:58:33,813 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:33,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:33,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:33,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:33,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4138 backedges. 153 proven. 558 refuted. 0 times theorem prover too weak. 3427 trivial. 0 not checked. [2018-11-10 11:58:33,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:33,986 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:33,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:34,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4138 backedges. 107 proven. 817 refuted. 0 times theorem prover too weak. 3214 trivial. 0 not checked. [2018-11-10 11:58:34,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:34,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 18 [2018-11-10 11:58:34,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 11:58:34,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 11:58:34,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2018-11-10 11:58:34,231 INFO L87 Difference]: Start difference. First operand 118 states and 184 transitions. Second operand 18 states. [2018-11-10 11:58:34,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:34,730 INFO L93 Difference]: Finished difference Result 290 states and 587 transitions. [2018-11-10 11:58:34,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-10 11:58:34,731 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 378 [2018-11-10 11:58:34,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:34,734 INFO L225 Difference]: With dead ends: 290 [2018-11-10 11:58:34,734 INFO L226 Difference]: Without dead ends: 179 [2018-11-10 11:58:34,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=1171, Unknown=0, NotChecked=0, Total=1406 [2018-11-10 11:58:34,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-11-10 11:58:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 154. [2018-11-10 11:58:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-11-10 11:58:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 252 transitions. [2018-11-10 11:58:34,754 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 252 transitions. Word has length 378 [2018-11-10 11:58:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:34,754 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 252 transitions. [2018-11-10 11:58:34,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 11:58:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 252 transitions. [2018-11-10 11:58:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-11-10 11:58:34,765 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:34,765 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 38, 38, 33, 30, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 14, 10, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:34,765 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:34,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:34,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1465780590, now seen corresponding path program 1 times [2018-11-10 11:58:34,766 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:34,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:34,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:34,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:34,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8499 backedges. 708 proven. 553 refuted. 0 times theorem prover too weak. 7238 trivial. 0 not checked. [2018-11-10 11:58:35,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:35,097 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:35,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:35,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8499 backedges. 287 proven. 901 refuted. 0 times theorem prover too weak. 7311 trivial. 0 not checked. [2018-11-10 11:58:35,425 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:35,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-11-10 11:58:35,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-10 11:58:35,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-10 11:58:35,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2018-11-10 11:58:35,427 INFO L87 Difference]: Start difference. First operand 154 states and 252 transitions. Second operand 19 states. [2018-11-10 11:58:35,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:35,911 INFO L93 Difference]: Finished difference Result 415 states and 873 transitions. [2018-11-10 11:58:35,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-10 11:58:35,912 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 544 [2018-11-10 11:58:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:35,916 INFO L225 Difference]: With dead ends: 415 [2018-11-10 11:58:35,916 INFO L226 Difference]: Without dead ends: 260 [2018-11-10 11:58:35,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2018-11-10 11:58:35,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-11-10 11:58:35,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 201. [2018-11-10 11:58:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-11-10 11:58:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 378 transitions. [2018-11-10 11:58:35,941 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 378 transitions. Word has length 544 [2018-11-10 11:58:35,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:35,941 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 378 transitions. [2018-11-10 11:58:35,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-10 11:58:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 378 transitions. [2018-11-10 11:58:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-11-10 11:58:35,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:35,945 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 32, 32, 28, 27, 18, 18, 18, 18, 18, 18, 18, 16, 16, 16, 16, 16, 16, 16, 11, 10, 10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:35,945 INFO L424 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:35,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:35,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1247809327, now seen corresponding path program 2 times [2018-11-10 11:58:35,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:35,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:35,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:35,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:35,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6469 backedges. 768 proven. 562 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2018-11-10 11:58:36,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:36,252 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:36,260 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 11:58:36,366 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 11:58:36,367 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:58:36,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:36,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6469 backedges. 634 proven. 613 refuted. 0 times theorem prover too weak. 5222 trivial. 0 not checked. [2018-11-10 11:58:36,598 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:36,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 24 [2018-11-10 11:58:36,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-10 11:58:36,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-10 11:58:36,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2018-11-10 11:58:36,599 INFO L87 Difference]: Start difference. First operand 201 states and 378 transitions. Second operand 24 states. [2018-11-10 11:58:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:37,234 INFO L93 Difference]: Finished difference Result 468 states and 1092 transitions. [2018-11-10 11:58:37,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-10 11:58:37,235 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 476 [2018-11-10 11:58:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:37,237 INFO L225 Difference]: With dead ends: 468 [2018-11-10 11:58:37,237 INFO L226 Difference]: Without dead ends: 211 [2018-11-10 11:58:37,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=288, Invalid=1604, Unknown=0, NotChecked=0, Total=1892 [2018-11-10 11:58:37,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-11-10 11:58:37,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2018-11-10 11:58:37,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-11-10 11:58:37,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 324 transitions. [2018-11-10 11:58:37,257 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 324 transitions. Word has length 476 [2018-11-10 11:58:37,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:37,258 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 324 transitions. [2018-11-10 11:58:37,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-10 11:58:37,258 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 324 transitions. [2018-11-10 11:58:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-11-10 11:58:37,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:37,262 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 32, 32, 30, 27, 20, 20, 20, 20, 20, 20, 20, 16, 16, 16, 16, 16, 16, 16, 14, 11, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:37,263 INFO L424 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:37,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:37,263 INFO L82 PathProgramCache]: Analyzing trace with hash -758951589, now seen corresponding path program 3 times [2018-11-10 11:58:37,263 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:37,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:37,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:37,264 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:37,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7290 backedges. 352 proven. 700 refuted. 0 times theorem prover too weak. 6238 trivial. 0 not checked. [2018-11-10 11:58:37,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:37,479 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:37,485 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 11:58:37,520 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 11:58:37,520 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:58:37,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 7290 backedges. 936 proven. 21 refuted. 0 times theorem prover too weak. 6333 trivial. 0 not checked. [2018-11-10 11:58:37,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:37,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2018-11-10 11:58:37,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 11:58:37,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 11:58:37,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-11-10 11:58:37,700 INFO L87 Difference]: Start difference. First operand 208 states and 324 transitions. Second operand 14 states. [2018-11-10 11:58:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:37,918 INFO L93 Difference]: Finished difference Result 423 states and 693 transitions. [2018-11-10 11:58:37,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-10 11:58:37,919 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 502 [2018-11-10 11:58:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:37,921 INFO L225 Difference]: With dead ends: 423 [2018-11-10 11:58:37,921 INFO L226 Difference]: Without dead ends: 221 [2018-11-10 11:58:37,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2018-11-10 11:58:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-11-10 11:58:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2018-11-10 11:58:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-11-10 11:58:37,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 304 transitions. [2018-11-10 11:58:37,933 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 304 transitions. Word has length 502 [2018-11-10 11:58:37,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:37,933 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 304 transitions. [2018-11-10 11:58:37,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 11:58:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 304 transitions. [2018-11-10 11:58:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-11-10 11:58:37,936 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:37,936 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 32, 32, 29, 29, 19, 19, 19, 19, 19, 19, 19, 16, 16, 16, 16, 16, 16, 16, 13, 10, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:37,936 INFO L424 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:37,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:37,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1327352044, now seen corresponding path program 4 times [2018-11-10 11:58:37,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:37,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:37,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:37,937 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:37,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6924 backedges. 870 proven. 427 refuted. 0 times theorem prover too weak. 5627 trivial. 0 not checked. [2018-11-10 11:58:38,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:38,146 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:38,154 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 11:58:38,208 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 11:58:38,208 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:58:38,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6924 backedges. 370 proven. 753 refuted. 0 times theorem prover too weak. 5801 trivial. 0 not checked. [2018-11-10 11:58:38,388 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:38,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 20 [2018-11-10 11:58:38,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-10 11:58:38,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-10 11:58:38,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-11-10 11:58:38,389 INFO L87 Difference]: Start difference. First operand 205 states and 304 transitions. Second operand 20 states. [2018-11-10 11:58:38,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:38,628 INFO L93 Difference]: Finished difference Result 235 states and 367 transitions. [2018-11-10 11:58:38,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-10 11:58:38,628 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 491 [2018-11-10 11:58:38,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:38,630 INFO L225 Difference]: With dead ends: 235 [2018-11-10 11:58:38,630 INFO L226 Difference]: Without dead ends: 161 [2018-11-10 11:58:38,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2018-11-10 11:58:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-11-10 11:58:38,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-11-10 11:58:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-11-10 11:58:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 204 transitions. [2018-11-10 11:58:38,641 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 204 transitions. Word has length 491 [2018-11-10 11:58:38,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:38,641 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 204 transitions. [2018-11-10 11:58:38,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-10 11:58:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 204 transitions. [2018-11-10 11:58:38,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-11-10 11:58:38,644 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:38,644 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 24, 24, 21, 20, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 9, 7, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:38,645 INFO L424 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:38,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:38,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1572493120, now seen corresponding path program 5 times [2018-11-10 11:58:38,646 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:38,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:38,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:38,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:38,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3484 backedges. 475 proven. 145 refuted. 0 times theorem prover too weak. 2864 trivial. 0 not checked. [2018-11-10 11:58:38,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:38,788 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:38,797 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 11:58:38,864 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-10 11:58:38,864 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:58:38,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3484 backedges. 1822 proven. 414 refuted. 0 times theorem prover too weak. 1248 trivial. 0 not checked. [2018-11-10 11:58:39,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:39,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 19 [2018-11-10 11:58:39,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-10 11:58:39,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-10 11:58:39,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2018-11-10 11:58:39,112 INFO L87 Difference]: Start difference. First operand 161 states and 204 transitions. Second operand 19 states. [2018-11-10 11:58:39,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:39,711 INFO L93 Difference]: Finished difference Result 348 states and 470 transitions. [2018-11-10 11:58:39,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-10 11:58:39,711 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 354 [2018-11-10 11:58:39,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:39,713 INFO L225 Difference]: With dead ends: 348 [2018-11-10 11:58:39,713 INFO L226 Difference]: Without dead ends: 191 [2018-11-10 11:58:39,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=1617, Unknown=0, NotChecked=0, Total=1892 [2018-11-10 11:58:39,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-11-10 11:58:39,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2018-11-10 11:58:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-11-10 11:58:39,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 219 transitions. [2018-11-10 11:58:39,726 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 219 transitions. Word has length 354 [2018-11-10 11:58:39,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:39,726 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 219 transitions. [2018-11-10 11:58:39,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-10 11:58:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 219 transitions. [2018-11-10 11:58:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-11-10 11:58:39,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:39,728 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:39,729 INFO L424 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:39,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:39,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1740376526, now seen corresponding path program 6 times [2018-11-10 11:58:39,729 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:39,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:39,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:39,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:39,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 1090 proven. 156 refuted. 0 times theorem prover too weak. 4123 trivial. 0 not checked. [2018-11-10 11:58:39,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:39,946 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:39,953 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 11:58:40,044 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2018-11-10 11:58:40,044 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:58:40,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 663 proven. 113 refuted. 0 times theorem prover too weak. 4593 trivial. 0 not checked. [2018-11-10 11:58:40,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:40,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 20 [2018-11-10 11:58:40,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-10 11:58:40,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-10 11:58:40,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-11-10 11:58:40,230 INFO L87 Difference]: Start difference. First operand 178 states and 219 transitions. Second operand 20 states. [2018-11-10 11:58:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:40,891 INFO L93 Difference]: Finished difference Result 359 states and 448 transitions. [2018-11-10 11:58:40,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-10 11:58:40,893 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 436 [2018-11-10 11:58:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:40,895 INFO L225 Difference]: With dead ends: 359 [2018-11-10 11:58:40,895 INFO L226 Difference]: Without dead ends: 204 [2018-11-10 11:58:40,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=1455, Unknown=0, NotChecked=0, Total=1722 [2018-11-10 11:58:40,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-11-10 11:58:40,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 185. [2018-11-10 11:58:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-11-10 11:58:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 225 transitions. [2018-11-10 11:58:40,911 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 225 transitions. Word has length 436 [2018-11-10 11:58:40,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:40,911 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 225 transitions. [2018-11-10 11:58:40,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-10 11:58:40,912 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 225 transitions. [2018-11-10 11:58:40,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-11-10 11:58:40,914 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:40,914 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:40,914 INFO L424 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:40,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:40,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1326629730, now seen corresponding path program 7 times [2018-11-10 11:58:40,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:40,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:40,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:40,916 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:40,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2018-11-10 11:58:41,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:41,926 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:41,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:42,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2018-11-10 11:58:42,766 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:42,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 52 [2018-11-10 11:58:42,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-10 11:58:42,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-10 11:58:42,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2018-11-10 11:58:42,767 INFO L87 Difference]: Start difference. First operand 185 states and 225 transitions. Second operand 52 states. [2018-11-10 11:58:43,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:43,259 INFO L93 Difference]: Finished difference Result 206 states and 249 transitions. [2018-11-10 11:58:43,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-10 11:58:43,259 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 463 [2018-11-10 11:58:43,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:43,261 INFO L225 Difference]: With dead ends: 206 [2018-11-10 11:58:43,261 INFO L226 Difference]: Without dead ends: 199 [2018-11-10 11:58:43,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 514 SyntacticMatches, 35 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2018-11-10 11:58:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-11-10 11:58:43,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2018-11-10 11:58:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-11-10 11:58:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 241 transitions. [2018-11-10 11:58:43,276 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 241 transitions. Word has length 463 [2018-11-10 11:58:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:43,277 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 241 transitions. [2018-11-10 11:58:43,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-10 11:58:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 241 transitions. [2018-11-10 11:58:43,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-11-10 11:58:43,279 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:43,280 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 35, 35, 30, 29, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 13, 10, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:43,280 INFO L424 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:43,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:43,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1638954211, now seen corresponding path program 8 times [2018-11-10 11:58:43,280 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:43,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:43,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:43,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:43,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 1313 proven. 334 refuted. 0 times theorem prover too weak. 5614 trivial. 0 not checked. [2018-11-10 11:58:43,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:43,653 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:43,663 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 11:58:43,751 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 11:58:43,751 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:58:43,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 948 proven. 208 refuted. 0 times theorem prover too weak. 6105 trivial. 0 not checked. [2018-11-10 11:58:43,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:43,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 22 [2018-11-10 11:58:43,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-10 11:58:43,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-10 11:58:43,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2018-11-10 11:58:43,941 INFO L87 Difference]: Start difference. First operand 198 states and 241 transitions. Second operand 22 states. [2018-11-10 11:58:44,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:44,371 INFO L93 Difference]: Finished difference Result 386 states and 478 transitions. [2018-11-10 11:58:44,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-10 11:58:44,372 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 504 [2018-11-10 11:58:44,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:44,373 INFO L225 Difference]: With dead ends: 386 [2018-11-10 11:58:44,373 INFO L226 Difference]: Without dead ends: 173 [2018-11-10 11:58:44,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 503 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2018-11-10 11:58:44,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-11-10 11:58:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 165. [2018-11-10 11:58:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-11-10 11:58:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 188 transitions. [2018-11-10 11:58:44,386 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 188 transitions. Word has length 504 [2018-11-10 11:58:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:44,387 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 188 transitions. [2018-11-10 11:58:44,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-10 11:58:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 188 transitions. [2018-11-10 11:58:44,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-11-10 11:58:44,389 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:58:44,389 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 37, 37, 31, 31, 20, 20, 20, 20, 20, 20, 20, 18, 18, 18, 18, 18, 18, 18, 13, 11, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:58:44,390 INFO L424 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:58:44,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:44,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1112347357, now seen corresponding path program 9 times [2018-11-10 11:58:44,390 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:44,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:44,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:44,391 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:44,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 314 proven. 1279 refuted. 0 times theorem prover too weak. 6493 trivial. 0 not checked. [2018-11-10 11:58:44,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:58:44,684 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:58:44,700 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 11:58:44,879 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-11-10 11:58:44,879 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:58:44,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 423 proven. 918 refuted. 0 times theorem prover too weak. 6745 trivial. 0 not checked. [2018-11-10 11:58:45,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:58:45,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 18 [2018-11-10 11:58:45,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 11:58:45,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 11:58:45,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-11-10 11:58:45,062 INFO L87 Difference]: Start difference. First operand 165 states and 188 transitions. Second operand 18 states. [2018-11-10 11:58:45,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:45,233 INFO L93 Difference]: Finished difference Result 167 states and 190 transitions. [2018-11-10 11:58:45,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-10 11:58:45,234 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 531 [2018-11-10 11:58:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:58:45,235 INFO L225 Difference]: With dead ends: 167 [2018-11-10 11:58:45,235 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 11:58:45,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2018-11-10 11:58:45,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 11:58:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 11:58:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 11:58:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 11:58:45,237 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 531 [2018-11-10 11:58:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:58:45,237 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 11:58:45,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 11:58:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 11:58:45,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 11:58:45,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 11:58:45,524 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,527 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,533 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,575 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,583 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,744 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,839 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,840 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,840 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,851 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,851 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,923 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,924 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,932 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,956 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,958 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,958 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,960 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,960 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,981 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:45,982 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,017 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,022 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,030 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,082 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,082 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,097 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,101 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,137 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,144 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,145 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,183 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,183 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,187 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,226 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,234 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,277 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,277 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,288 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,313 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,313 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,333 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,334 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,336 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,354 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,354 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,357 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,360 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,361 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,362 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,386 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,387 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,389 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,450 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 11:58:46,704 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 9 [2018-11-10 11:58:47,452 WARN L179 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 50 [2018-11-10 11:58:47,639 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 9 [2018-11-10 11:58:48,232 WARN L179 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 39 [2018-11-10 11:58:48,233 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 11:58:48,233 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 11:58:48,234 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 11:58:48,234 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 11:58:48,234 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 11:58:48,234 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 11:58:48,234 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2018-11-10 11:58:48,234 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2018-11-10 11:58:48,234 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2018-11-10 11:58:48,234 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2018-11-10 11:58:48,234 INFO L425 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-11-10 11:58:48,234 INFO L425 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2018-11-10 11:58:48,234 INFO L421 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= 8 main_~x~0) (<= main_~x~0 8)) [2018-11-10 11:58:48,234 INFO L425 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-11-10 11:58:48,235 INFO L425 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-11-10 11:58:48,235 INFO L428 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2018-11-10 11:58:48,235 INFO L421 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (< 2 |fibo2_#in~n|) (<= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| fibo2_~n)) [2018-11-10 11:58:48,235 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-10 11:58:48,235 INFO L421 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse1 (<= fibo2_~n |fibo2_#in~n|)) (.cse4 (<= |fibo2_#in~n| 4))) (let ((.cse0 (and .cse1 .cse4 (<= |fibo2_#t~ret2| 2) (<= 4 fibo2_~n) (<= 2 |fibo2_#t~ret2|))) (.cse2 (<= |fibo2_#in~n| fibo2_~n)) (.cse3 (and (<= 5 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 5) (<= 6 |fibo2_#in~n|))) (.cse5 (<= 7 |fibo2_#in~n|))) (and (or .cse0 (and .cse1 (<= 5 |fibo2_#in~n|) .cse2) (< |fibo2_#in~n| 4)) (or .cse0 (and (<= 1 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 1)) (< 4 |fibo2_#in~n|)) (or .cse3 (and (<= |fibo2_#t~ret2| 3) (<= 3 |fibo2_#t~ret2|)) (and .cse4 (<= 4 |fibo2_#in~n|)) .cse5 (and .cse1 (<= |fibo2_#in~n| 3) .cse2 (<= 3 |fibo2_#in~n|))) (or (<= |fibo2_#in~n| 6) (<= 8 |fibo2_#in~n|) (and (<= |fibo2_#t~ret2| 8) (<= 8 |fibo2_#t~ret2|))) (or .cse3 (<= |fibo2_#in~n| 5) .cse5)))) [2018-11-10 11:58:48,235 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-11-10 11:58:48,235 INFO L425 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-11-10 11:58:48,235 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2018-11-10 11:58:48,235 INFO L425 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2018-11-10 11:58:48,235 INFO L425 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2018-11-10 11:58:48,236 INFO L428 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2018-11-10 11:58:48,236 INFO L421 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (< 2 |fibo1_#in~n|) (<= fibo1_~n |fibo1_#in~n|) (<= |fibo1_#in~n| fibo1_~n)) [2018-11-10 11:58:48,236 INFO L425 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-10 11:58:48,236 INFO L421 ceAbstractionStarter]: At program point L13-2(line 13) the Hoare annotation is: (and (let ((.cse0 (<= |fibo1_#in~n| fibo1_~n))) (or (and (<= 2 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 2) (<= |fibo1_#in~n| 4)) (and (<= 6 |fibo1_#in~n|) .cse0) (and (<= 3 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 3) .cse0 (<= 5 |fibo1_#in~n|)))) (<= fibo1_~n |fibo1_#in~n|) (or (<= 9 |fibo1_#in~n|) (and (<= |fibo1_#t~ret0| 13) (<= 13 |fibo1_#t~ret0|)) (<= |fibo1_#in~n| 7)) (or (<= |fibo1_#in~n| 5) (and (<= |fibo1_#t~ret0| 5) (<= 5 |fibo1_#t~ret0|)) (<= 7 |fibo1_#in~n|)) (<= 4 fibo1_~n)) [2018-11-10 11:58:48,236 INFO L425 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2018-11-10 11:58:48,236 INFO L425 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2018-11-10 11:58:48,236 INFO L425 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-11-10 11:58:48,236 INFO L425 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2018-11-10 11:58:48,236 INFO L425 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2018-11-10 11:58:48,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:58:48 BoogieIcfgContainer [2018-11-10 11:58:48,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 11:58:48,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:58:48,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:58:48,239 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:58:48,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:58:30" (3/4) ... [2018-11-10 11:58:48,243 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 11:58:48,249 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 11:58:48,249 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 11:58:48,249 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2018-11-10 11:58:48,249 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2018-11-10 11:58:48,253 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-10 11:58:48,253 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 11:58:48,253 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 11:58:48,288 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_dec40a67-0ec3-42e6-b242-2988d4d8633f/bin-2019/uautomizer/witness.graphml [2018-11-10 11:58:48,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:58:48,289 INFO L168 Benchmark]: Toolchain (without parser) took 18184.53 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 916.5 MB). Free memory was 959.2 MB in the beginning and 1.5 GB in the end (delta: -552.5 MB). Peak memory consumption was 364.0 MB. Max. memory is 11.5 GB. [2018-11-10 11:58:48,290 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:58:48,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:58:48,291 INFO L168 Benchmark]: Boogie Preprocessor took 18.79 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:58:48,291 INFO L168 Benchmark]: RCFGBuilder took 182.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -183.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-10 11:58:48,291 INFO L168 Benchmark]: TraceAbstraction took 17762.53 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 772.8 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -380.3 MB). Peak memory consumption was 973.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:58:48,291 INFO L168 Benchmark]: Witness Printer took 49.57 ms. Allocated memory is still 1.9 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 11.0 kB). Peak memory consumption was 11.0 kB. Max. memory is 11.5 GB. [2018-11-10 11:58:48,293 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.79 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 182.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -183.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17762.53 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 772.8 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -380.3 MB). Peak memory consumption was 973.8 MB. Max. memory is 11.5 GB. * Witness Printer took 49.57 ms. Allocated memory is still 1.9 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 11.0 kB). Peak memory consumption was 11.0 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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 5 procedures, 33 locations, 1 error locations. SAFE Result, 17.7s OverallTime, 19 OverallIterations, 41 TraceHistogramMax, 6.0s AutomataDifference, 0.0s DeadEndRemovalTime, 2.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 672 SDtfs, 1107 SDslu, 6910 SDs, 0 SdLazy, 7773 SolverSat, 1191 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5679 GetRequests, 5145 SyntacticMatches, 38 SemanticMatches, 496 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2860 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred in iteration=12, 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: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 208 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 977 PreInvPairs, 1997 NumberOfFragments, 236 HoareAnnotationTreeSize, 977 FomulaSimplifications, 44749 FormulaSimplificationTreeSizeReduction, 1.2s HoareSimplificationTime, 11 FomulaSimplificationsInter, 25522 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 10267 NumberOfCodeBlocks, 9461 NumberOfCodeBlocksAsserted, 103 NumberOfCheckSat, 10231 ConstructedInterpolants, 0 QuantifiedInterpolants, 6869959 SizeOfPredicates, 99 NumberOfNonLiveVariables, 9544 ConjunctsInSsa, 470 ConjunctsInUnsatCore, 36 InterpolantComputations, 2 PerfectInterpolantSequences, 115074/129208 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...