./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.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_42f77cc3-7abe-46f3-9b77-663feb9833f2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/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 f345f307410a5ddbdd0513896d69ca703c67be23 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:14:12,308 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 08:14:12,310 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 08:14:12,318 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 08:14:12,318 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 08:14:12,319 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 08:14:12,320 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 08:14:12,321 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 08:14:12,322 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 08:14:12,323 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 08:14:12,324 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 08:14:12,324 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 08:14:12,324 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 08:14:12,325 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 08:14:12,326 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 08:14:12,326 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 08:14:12,327 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 08:14:12,328 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 08:14:12,329 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 08:14:12,330 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 08:14:12,331 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 08:14:12,332 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 08:14:12,334 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 08:14:12,334 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 08:14:12,334 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 08:14:12,335 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 08:14:12,336 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 08:14:12,336 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 08:14:12,337 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 08:14:12,338 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 08:14:12,338 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 08:14:12,338 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 08:14:12,338 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 08:14:12,339 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 08:14:12,339 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 08:14:12,340 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 08:14:12,340 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 08:14:12,350 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 08:14:12,350 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 08:14:12,351 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 08:14:12,351 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 08:14:12,351 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 08:14:12,351 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 08:14:12,352 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 08:14:12,352 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 08:14:12,352 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 08:14:12,352 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 08:14:12,352 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 08:14:12,352 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 08:14:12,352 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 08:14:12,353 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 08:14:12,353 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 08:14:12,353 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 08:14:12,353 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 08:14:12,353 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 08:14:12,353 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 08:14:12,353 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 08:14:12,354 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 08:14:12,354 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 08:14:12,354 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 08:14:12,354 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 08:14:12,354 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 08:14:12,354 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 08:14:12,354 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 08:14:12,354 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 08:14:12,355 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 08:14:12,355 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_42f77cc3-7abe-46f3-9b77-663feb9833f2/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 -> f345f307410a5ddbdd0513896d69ca703c67be23 [2018-11-10 08:14:12,377 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 08:14:12,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 08:14:12,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 08:14:12,390 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 08:14:12,390 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 08:14:12,391 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c [2018-11-10 08:14:12,433 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/bin-2019/uautomizer/data/89f039d02/0f3ebdc369474642a87e8e91f6969f99/FLAG66588ef82 [2018-11-10 08:14:12,747 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 08:14:12,748 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/sv-benchmarks/c/recursive-simple/id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c [2018-11-10 08:14:12,751 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/bin-2019/uautomizer/data/89f039d02/0f3ebdc369474642a87e8e91f6969f99/FLAG66588ef82 [2018-11-10 08:14:12,762 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/bin-2019/uautomizer/data/89f039d02/0f3ebdc369474642a87e8e91f6969f99 [2018-11-10 08:14:12,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 08:14:12,765 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 08:14:12,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 08:14:12,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 08:14:12,768 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 08:14:12,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:14:12" (1/1) ... [2018-11-10 08:14:12,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12305cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:14:12, skipping insertion in model container [2018-11-10 08:14:12,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:14:12" (1/1) ... [2018-11-10 08:14:12,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 08:14:12,788 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 08:14:12,893 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:14:12,895 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 08:14:12,906 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:14:12,914 INFO L193 MainTranslator]: Completed translation [2018-11-10 08:14:12,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:14:12 WrapperNode [2018-11-10 08:14:12,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 08:14:12,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 08:14:12,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 08:14:12,915 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 08:14:12,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:14:12" (1/1) ... [2018-11-10 08:14:12,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:14:12" (1/1) ... [2018-11-10 08:14:12,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:14:12" (1/1) ... [2018-11-10 08:14:12,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:14:12" (1/1) ... [2018-11-10 08:14:12,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:14:12" (1/1) ... [2018-11-10 08:14:12,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:14:12" (1/1) ... [2018-11-10 08:14:12,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:14:12" (1/1) ... [2018-11-10 08:14:12,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 08:14:12,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 08:14:12,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 08:14:12,931 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 08:14:12,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:14:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/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 08:14:12,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 08:14:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 08:14:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-10 08:14:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2018-11-10 08:14:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 08:14:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2018-11-10 08:14:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 08:14:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-10 08:14:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2018-11-10 08:14:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 08:14:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 08:14:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 08:14:13,090 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 08:14:13,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:14:13 BoogieIcfgContainer [2018-11-10 08:14:13,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 08:14:13,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 08:14:13,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 08:14:13,093 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 08:14:13,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 08:14:12" (1/3) ... [2018-11-10 08:14:13,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26154d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:14:13, skipping insertion in model container [2018-11-10 08:14:13,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:14:12" (2/3) ... [2018-11-10 08:14:13,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26154d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:14:13, skipping insertion in model container [2018-11-10 08:14:13,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:14:13" (3/3) ... [2018-11-10 08:14:13,096 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c [2018-11-10 08:14:13,101 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 08:14:13,105 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 08:14:13,113 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 08:14:13,132 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 08:14:13,132 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 08:14:13,132 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 08:14:13,132 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 08:14:13,132 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 08:14:13,133 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 08:14:13,133 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 08:14:13,133 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 08:14:13,133 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 08:14:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-10 08:14:13,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 08:14:13,146 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:14:13,146 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:14:13,148 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:14:13,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:14:13,152 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2018-11-10 08:14:13,154 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:14:13,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:14:13,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:14:13,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:14:13,278 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 08:14:13,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:14:13,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 08:14:13,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 08:14:13,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 08:14:13,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:14:13,291 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-11-10 08:14:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:14:13,338 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-11-10 08:14:13,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 08:14:13,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-10 08:14:13,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:14:13,346 INFO L225 Difference]: With dead ends: 40 [2018-11-10 08:14:13,346 INFO L226 Difference]: Without dead ends: 26 [2018-11-10 08:14:13,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:14:13,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-10 08:14:13,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-10 08:14:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 08:14:13,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-10 08:14:13,372 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-11-10 08:14:13,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:14:13,372 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-10 08:14:13,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 08:14:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-10 08:14:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 08:14:13,373 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:14:13,373 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:14:13,373 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:14:13,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:14:13,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2018-11-10 08:14:13,374 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:14:13,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:14:13,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:14:13,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:14:13,441 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 08:14:13,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:14:13,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 08:14:13,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 08:14:13,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 08:14:13,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:14:13,443 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-11-10 08:14:13,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:14:13,458 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2018-11-10 08:14:13,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 08:14:13,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-10 08:14:13,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:14:13,459 INFO L225 Difference]: With dead ends: 44 [2018-11-10 08:14:13,459 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 08:14:13,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:14:13,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 08:14:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-10 08:14:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 08:14:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-10 08:14:13,464 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-11-10 08:14:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:14:13,464 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-10 08:14:13,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 08:14:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-10 08:14:13,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 08:14:13,465 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:14:13,465 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:14:13,465 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:14:13,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:14:13,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2018-11-10 08:14:13,466 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:14:13,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:14:13,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:14:13,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:14:13,585 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 08:14:13,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:14:13,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-10 08:14:13,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 08:14:13,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 08:14:13,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 08:14:13,586 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2018-11-10 08:14:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:14:13,627 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-10 08:14:13,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 08:14:13,628 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-11-10 08:14:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:14:13,629 INFO L225 Difference]: With dead ends: 36 [2018-11-10 08:14:13,629 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 08:14:13,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-10 08:14:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 08:14:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-10 08:14:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 08:14:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-10 08:14:13,634 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-11-10 08:14:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:14:13,634 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-10 08:14:13,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 08:14:13,635 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-10 08:14:13,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 08:14:13,635 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:14:13,636 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 08:14:13,636 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:14:13,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:14:13,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1423155149, now seen corresponding path program 1 times [2018-11-10 08:14:13,636 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:14:13,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:14:13,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:14:13,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:14:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 08:14:13,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:14:13,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 08:14:13,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 08:14:13,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 08:14:13,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:14:13,685 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2018-11-10 08:14:13,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:14:13,696 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-11-10 08:14:13,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 08:14:13,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-10 08:14:13,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:14:13,698 INFO L225 Difference]: With dead ends: 48 [2018-11-10 08:14:13,698 INFO L226 Difference]: Without dead ends: 36 [2018-11-10 08:14:13,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:14:13,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-10 08:14:13,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-11-10 08:14:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-10 08:14:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-11-10 08:14:13,702 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-11-10 08:14:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:14:13,703 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-11-10 08:14:13,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 08:14:13,703 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-11-10 08:14:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 08:14:13,703 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:14:13,704 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 08:14:13,704 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:14:13,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:14:13,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1226641644, now seen corresponding path program 1 times [2018-11-10 08:14:13,704 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:14:13,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:14:13,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:14:13,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:14:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 08:14:13,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:14:13,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 08:14:13,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 08:14:13,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 08:14:13,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:14:13,756 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-11-10 08:14:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:14:13,770 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-11-10 08:14:13,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 08:14:13,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-10 08:14:13,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:14:13,771 INFO L225 Difference]: With dead ends: 40 [2018-11-10 08:14:13,771 INFO L226 Difference]: Without dead ends: 36 [2018-11-10 08:14:13,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:14:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-10 08:14:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-11-10 08:14:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-10 08:14:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-11-10 08:14:13,776 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-11-10 08:14:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:14:13,776 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-11-10 08:14:13,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 08:14:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-11-10 08:14:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 08:14:13,777 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:14:13,777 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 08:14:13,777 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:14:13,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:14:13,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2018-11-10 08:14:13,778 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:14:13,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:14:13,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:14:13,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:14:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 08:14:13,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:14:13,878 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/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 08:14:13,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:14:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:14:13,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:14:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 08:14:13,990 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:14:13,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-10 08:14:13,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 08:14:13,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 08:14:13,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-10 08:14:13,991 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 11 states. [2018-11-10 08:14:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:14:14,090 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-11-10 08:14:14,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 08:14:14,090 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2018-11-10 08:14:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:14:14,090 INFO L225 Difference]: With dead ends: 58 [2018-11-10 08:14:14,090 INFO L226 Difference]: Without dead ends: 42 [2018-11-10 08:14:14,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-11-10 08:14:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-10 08:14:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2018-11-10 08:14:14,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-10 08:14:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-11-10 08:14:14,094 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-11-10 08:14:14,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:14:14,094 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-11-10 08:14:14,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 08:14:14,094 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-11-10 08:14:14,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 08:14:14,095 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:14:14,095 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-10 08:14:14,095 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:14:14,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:14:14,096 INFO L82 PathProgramCache]: Analyzing trace with hash 906172561, now seen corresponding path program 1 times [2018-11-10 08:14:14,096 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:14:14,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:14:14,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:14,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:14:14,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:14:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 08:14:14,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:14:14,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 08:14:14,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 08:14:14,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 08:14:14,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:14:14,152 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-11-10 08:14:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:14:14,167 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-11-10 08:14:14,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 08:14:14,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-11-10 08:14:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:14:14,169 INFO L225 Difference]: With dead ends: 54 [2018-11-10 08:14:14,169 INFO L226 Difference]: Without dead ends: 40 [2018-11-10 08:14:14,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:14:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-10 08:14:14,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-11-10 08:14:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-10 08:14:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-10 08:14:14,174 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 34 [2018-11-10 08:14:14,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:14:14,174 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-10 08:14:14,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 08:14:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-10 08:14:14,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 08:14:14,175 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:14:14,175 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-10 08:14:14,175 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:14:14,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:14:14,176 INFO L82 PathProgramCache]: Analyzing trace with hash 709659056, now seen corresponding path program 1 times [2018-11-10 08:14:14,176 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:14:14,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:14:14,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:14,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:14:14,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:14:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 08:14:14,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:14:14,301 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/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 08:14:14,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:14:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:14:14,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:14:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 08:14:14,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:14:14,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-10 08:14:14,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 08:14:14,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 08:14:14,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-10 08:14:14,360 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 11 states. [2018-11-10 08:14:14,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:14:14,443 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2018-11-10 08:14:14,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 08:14:14,444 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2018-11-10 08:14:14,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:14:14,445 INFO L225 Difference]: With dead ends: 70 [2018-11-10 08:14:14,445 INFO L226 Difference]: Without dead ends: 52 [2018-11-10 08:14:14,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-11-10 08:14:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-10 08:14:14,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2018-11-10 08:14:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 08:14:14,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2018-11-10 08:14:14,451 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 34 [2018-11-10 08:14:14,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:14:14,452 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2018-11-10 08:14:14,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 08:14:14,452 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2018-11-10 08:14:14,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-10 08:14:14,453 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:14:14,453 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:14:14,453 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:14:14,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:14:14,453 INFO L82 PathProgramCache]: Analyzing trace with hash -797786941, now seen corresponding path program 2 times [2018-11-10 08:14:14,454 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:14:14,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:14:14,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:14,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:14:14,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:14:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:14:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-10 08:14:14,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:14:14,655 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/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 08:14:14,660 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 08:14:14,672 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 08:14:14,672 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 08:14:14,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:14:14,689 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-10 08:14:14,704 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:14:14,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 17 [2018-11-10 08:14:14,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 08:14:14,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 08:14:14,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-11-10 08:14:14,705 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 17 states. [2018-11-10 08:14:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:14:14,799 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2018-11-10 08:14:14,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 08:14:14,799 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2018-11-10 08:14:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:14:14,800 INFO L225 Difference]: With dead ends: 58 [2018-11-10 08:14:14,800 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 08:14:14,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2018-11-10 08:14:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 08:14:14,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 08:14:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 08:14:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 08:14:14,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2018-11-10 08:14:14,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:14:14,802 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:14:14,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 08:14:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 08:14:14,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 08:14:14,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 08:14:14,820 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 08:14:14,821 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:14:14,821 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-10 08:14:14,821 INFO L428 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: true [2018-11-10 08:14:14,821 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-10 08:14:14,821 INFO L425 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-11-10 08:14:14,821 INFO L425 ceAbstractionStarter]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2018-11-10 08:14:14,821 INFO L428 ceAbstractionStarter]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2018-11-10 08:14:14,821 INFO L425 ceAbstractionStarter]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2018-11-10 08:14:14,822 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:14:14,822 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 08:14:14,822 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 08:14:14,822 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 08:14:14,822 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2018-11-10 08:14:14,822 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-10 08:14:14,822 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2018-11-10 08:14:14,822 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2018-11-10 08:14:14,823 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-11-10 08:14:14,823 INFO L428 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: true [2018-11-10 08:14:14,823 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-10 08:14:14,823 INFO L425 ceAbstractionStarter]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2018-11-10 08:14:14,824 INFO L425 ceAbstractionStarter]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2018-11-10 08:14:14,825 INFO L425 ceAbstractionStarter]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2018-11-10 08:14:14,825 INFO L425 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-11-10 08:14:14,826 INFO L428 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: true [2018-11-10 08:14:14,826 INFO L425 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-11-10 08:14:14,826 INFO L425 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-11-10 08:14:14,826 INFO L428 ceAbstractionStarter]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2018-11-10 08:14:14,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 08:14:14 BoogieIcfgContainer [2018-11-10 08:14:14,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 08:14:14,829 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 08:14:14,829 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 08:14:14,829 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 08:14:14,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:14:13" (3/4) ... [2018-11-10 08:14:14,832 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 08:14:14,836 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 08:14:14,836 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2018-11-10 08:14:14,837 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 08:14:14,837 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-10 08:14:14,840 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-10 08:14:14,840 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 08:14:14,841 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 08:14:14,867 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_42f77cc3-7abe-46f3-9b77-663feb9833f2/bin-2019/uautomizer/witness.graphml [2018-11-10 08:14:14,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 08:14:14,867 INFO L168 Benchmark]: Toolchain (without parser) took 2103.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 960.2 MB in the beginning and 866.6 MB in the end (delta: 93.6 MB). Peak memory consumption was 216.8 MB. Max. memory is 11.5 GB. [2018-11-10 08:14:14,868 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:14:14,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.66 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-11-10 08:14:14,869 INFO L168 Benchmark]: Boogie Preprocessor took 15.40 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:14:14,869 INFO L168 Benchmark]: RCFGBuilder took 160.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -165.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2018-11-10 08:14:14,869 INFO L168 Benchmark]: TraceAbstraction took 1736.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.0 MB in the end (delta: 239.1 MB). Peak memory consumption was 239.1 MB. Max. memory is 11.5 GB. [2018-11-10 08:14:14,871 INFO L168 Benchmark]: Witness Printer took 38.28 ms. Allocated memory is still 1.2 GB. Free memory was 872.0 MB in the beginning and 866.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 08:14:14,872 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.66 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.40 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 160.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -165.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1736.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.0 MB in the end (delta: 239.1 MB). Peak memory consumption was 239.1 MB. Max. memory is 11.5 GB. * Witness Printer took 38.28 ms. Allocated memory is still 1.2 GB. Free memory was 872.0 MB in the beginning and 866.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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, 28 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 262 SDtfs, 26 SDslu, 1454 SDs, 0 SdLazy, 317 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 111 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 24 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 333 ConstructedInterpolants, 0 QuantifiedInterpolants, 30869 SizeOfPredicates, 10 NumberOfNonLiveVariables, 225 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 61/93 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...