./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 6e1fd2ba6533b7d8cc379ec5987b906d551e69a3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 05:40:43,655 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 05:40:43,657 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 05:40:43,664 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 05:40:43,664 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 05:40:43,665 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 05:40:43,666 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 05:40:43,667 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 05:40:43,668 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 05:40:43,668 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 05:40:43,669 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 05:40:43,669 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 05:40:43,670 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 05:40:43,670 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 05:40:43,671 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 05:40:43,671 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 05:40:43,672 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 05:40:43,673 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 05:40:43,674 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 05:40:43,675 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 05:40:43,675 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 05:40:43,676 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 05:40:43,678 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 05:40:43,678 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 05:40:43,678 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 05:40:43,679 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 05:40:43,679 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 05:40:43,680 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 05:40:43,680 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 05:40:43,681 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 05:40:43,681 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 05:40:43,681 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 05:40:43,682 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 05:40:43,682 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 05:40:43,682 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 05:40:43,683 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 05:40:43,683 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 05:40:43,690 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 05:40:43,690 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 05:40:43,690 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 05:40:43,691 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 05:40:43,691 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 05:40:43,691 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 05:40:43,691 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 05:40:43,691 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 05:40:43,692 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 05:40:43,692 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 05:40:43,692 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 05:40:43,692 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 05:40:43,692 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 05:40:43,692 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 05:40:43,692 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 05:40:43,692 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 05:40:43,692 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 05:40:43,692 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 05:40:43,692 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 05:40:43,693 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 05:40:43,693 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 05:40:43,693 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 05:40:43,693 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 05:40:43,693 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 05:40:43,693 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 05:40:43,693 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 05:40:43,693 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 05:40:43,693 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 05:40:43,693 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 05:40:43,693 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 05:40:43,693 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_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 -> 6e1fd2ba6533b7d8cc379ec5987b906d551e69a3 [2018-11-23 05:40:43,715 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 05:40:43,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 05:40:43,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 05:40:43,725 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 05:40:43,726 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 05:40:43,726 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 05:40:43,761 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/bin-2019/uautomizer/data/da3bb4f74/35dff0703bec41b895c72129e9407911/FLAGd6a1c56fb [2018-11-23 05:40:44,152 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 05:40:44,152 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 05:40:44,156 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/bin-2019/uautomizer/data/da3bb4f74/35dff0703bec41b895c72129e9407911/FLAGd6a1c56fb [2018-11-23 05:40:44,164 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/bin-2019/uautomizer/data/da3bb4f74/35dff0703bec41b895c72129e9407911 [2018-11-23 05:40:44,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 05:40:44,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 05:40:44,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 05:40:44,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 05:40:44,171 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 05:40:44,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:40:44" (1/1) ... [2018-11-23 05:40:44,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c15b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44, skipping insertion in model container [2018-11-23 05:40:44,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:40:44" (1/1) ... [2018-11-23 05:40:44,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 05:40:44,190 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 05:40:44,289 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:40:44,291 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 05:40:44,300 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:40:44,308 INFO L195 MainTranslator]: Completed translation [2018-11-23 05:40:44,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44 WrapperNode [2018-11-23 05:40:44,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 05:40:44,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 05:40:44,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 05:40:44,309 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 05:40:44,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44" (1/1) ... [2018-11-23 05:40:44,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44" (1/1) ... [2018-11-23 05:40:44,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 05:40:44,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 05:40:44,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 05:40:44,321 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 05:40:44,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44" (1/1) ... [2018-11-23 05:40:44,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44" (1/1) ... [2018-11-23 05:40:44,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44" (1/1) ... [2018-11-23 05:40:44,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44" (1/1) ... [2018-11-23 05:40:44,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44" (1/1) ... [2018-11-23 05:40:44,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44" (1/1) ... [2018-11-23 05:40:44,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44" (1/1) ... [2018-11-23 05:40:44,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 05:40:44,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 05:40:44,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 05:40:44,332 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 05:40:44,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2018-11-23 05:40:44,406 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2018-11-23 05:40:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 05:40:44,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 05:40:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 05:40:44,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 05:40:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 05:40:44,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 05:40:44,518 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 05:40:44,518 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 05:40:44,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:40:44 BoogieIcfgContainer [2018-11-23 05:40:44,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 05:40:44,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 05:40:44,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 05:40:44,521 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 05:40:44,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:40:44" (1/3) ... [2018-11-23 05:40:44,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af89fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:40:44, skipping insertion in model container [2018-11-23 05:40:44,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:44" (2/3) ... [2018-11-23 05:40:44,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af89fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:40:44, skipping insertion in model container [2018-11-23 05:40:44,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:40:44" (3/3) ... [2018-11-23 05:40:44,523 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 05:40:44,532 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 05:40:44,537 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 05:40:44,550 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 05:40:44,576 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 05:40:44,576 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 05:40:44,577 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 05:40:44,577 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 05:40:44,577 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 05:40:44,577 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 05:40:44,577 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 05:40:44,577 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 05:40:44,577 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 05:40:44,592 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-23 05:40:44,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 05:40:44,597 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:44,598 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:44,600 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:44,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:44,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1900973920, now seen corresponding path program 1 times [2018-11-23 05:40:44,606 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:44,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:44,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:44,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:40:44,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:40:44,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:40:44,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 05:40:44,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 05:40:44,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 05:40:44,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:40:44,760 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2018-11-23 05:40:44,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:44,833 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2018-11-23 05:40:44,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:40:44,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-23 05:40:44,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:44,840 INFO L225 Difference]: With dead ends: 36 [2018-11-23 05:40:44,841 INFO L226 Difference]: Without dead ends: 22 [2018-11-23 05:40:44,842 INFO L631 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 [2018-11-23 05:40:44,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-23 05:40:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-23 05:40:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 05:40:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2018-11-23 05:40:44,867 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2018-11-23 05:40:44,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:44,867 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-11-23 05:40:44,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 05:40:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2018-11-23 05:40:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 05:40:44,868 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:44,868 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:44,869 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:44,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:44,869 INFO L82 PathProgramCache]: Analyzing trace with hash -509871596, now seen corresponding path program 1 times [2018-11-23 05:40:44,869 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:44,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:44,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:44,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:40:44,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:40:44,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:40:44,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 05:40:44,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 05:40:44,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 05:40:44,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 05:40:44,905 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 5 states. [2018-11-23 05:40:44,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:44,976 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2018-11-23 05:40:44,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:40:44,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-23 05:40:44,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:44,977 INFO L225 Difference]: With dead ends: 28 [2018-11-23 05:40:44,977 INFO L226 Difference]: Without dead ends: 24 [2018-11-23 05:40:44,978 INFO L631 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 [2018-11-23 05:40:44,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-23 05:40:44,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-11-23 05:40:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 05:40:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2018-11-23 05:40:44,983 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2018-11-23 05:40:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:44,983 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-11-23 05:40:44,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 05:40:44,984 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2018-11-23 05:40:44,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 05:40:44,984 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:44,985 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:44,985 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:44,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:44,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1203666899, now seen corresponding path program 1 times [2018-11-23 05:40:44,985 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:44,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:44,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:44,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:40:44,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 05:40:45,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:45,050 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:45,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:40:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:45,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 05:40:45,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:45,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-11-23 05:40:45,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 05:40:45,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 05:40:45,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-23 05:40:45,146 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2018-11-23 05:40:45,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:45,247 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2018-11-23 05:40:45,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 05:40:45,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-11-23 05:40:45,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:45,248 INFO L225 Difference]: With dead ends: 39 [2018-11-23 05:40:45,248 INFO L226 Difference]: Without dead ends: 24 [2018-11-23 05:40:45,248 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-11-23 05:40:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-23 05:40:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-23 05:40:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 05:40:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-11-23 05:40:45,252 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 27 [2018-11-23 05:40:45,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:45,252 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-23 05:40:45,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 05:40:45,252 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-11-23 05:40:45,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-23 05:40:45,253 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:45,253 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:45,253 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:45,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:45,254 INFO L82 PathProgramCache]: Analyzing trace with hash -603082491, now seen corresponding path program 1 times [2018-11-23 05:40:45,254 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:45,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:45,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:45,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:40:45,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 05:40:45,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:45,290 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:45,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:40:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:45,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 05:40:45,330 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:45,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-23 05:40:45,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 05:40:45,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 05:40:45,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 05:40:45,331 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2018-11-23 05:40:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:45,386 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2018-11-23 05:40:45,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 05:40:45,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2018-11-23 05:40:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:45,388 INFO L225 Difference]: With dead ends: 33 [2018-11-23 05:40:45,388 INFO L226 Difference]: Without dead ends: 29 [2018-11-23 05:40:45,388 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-23 05:40:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-23 05:40:45,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-23 05:40:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-23 05:40:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2018-11-23 05:40:45,392 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 28 [2018-11-23 05:40:45,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:45,392 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2018-11-23 05:40:45,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 05:40:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2018-11-23 05:40:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-23 05:40:45,393 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:45,393 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:45,393 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:45,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:45,394 INFO L82 PathProgramCache]: Analyzing trace with hash -2046185202, now seen corresponding path program 2 times [2018-11-23 05:40:45,394 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:45,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:45,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:45,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:40:45,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 05:40:45,430 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:45,431 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:45,452 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 05:40:45,463 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 05:40:45,463 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:40:45,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-23 05:40:45,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:45,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2018-11-23 05:40:45,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 05:40:45,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 05:40:45,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-11-23 05:40:45,534 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand 9 states. [2018-11-23 05:40:45,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:45,627 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2018-11-23 05:40:45,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 05:40:45,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2018-11-23 05:40:45,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:45,628 INFO L225 Difference]: With dead ends: 43 [2018-11-23 05:40:45,628 INFO L226 Difference]: Without dead ends: 37 [2018-11-23 05:40:45,629 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-11-23 05:40:45,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-23 05:40:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2018-11-23 05:40:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-23 05:40:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 50 transitions. [2018-11-23 05:40:45,634 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 50 transitions. Word has length 41 [2018-11-23 05:40:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:45,635 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 50 transitions. [2018-11-23 05:40:45,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 05:40:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 50 transitions. [2018-11-23 05:40:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-23 05:40:45,637 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:45,637 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 10, 6, 6, 6, 6, 6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:45,638 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:45,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:45,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2126680716, now seen corresponding path program 3 times [2018-11-23 05:40:45,638 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:45,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:45,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:45,639 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:40:45,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 169 proven. 24 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-11-23 05:40:45,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:45,742 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:45,757 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 05:40:45,783 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-11-23 05:40:45,783 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:40:45,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 166 proven. 15 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2018-11-23 05:40:45,862 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:45,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-11-23 05:40:45,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 05:40:45,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 05:40:45,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-23 05:40:45,863 INFO L87 Difference]: Start difference. First operand 34 states and 50 transitions. Second operand 10 states. [2018-11-23 05:40:46,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:46,003 INFO L93 Difference]: Finished difference Result 77 states and 144 transitions. [2018-11-23 05:40:46,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 05:40:46,006 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2018-11-23 05:40:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:46,008 INFO L225 Difference]: With dead ends: 77 [2018-11-23 05:40:46,008 INFO L226 Difference]: Without dead ends: 50 [2018-11-23 05:40:46,010 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2018-11-23 05:40:46,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-23 05:40:46,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-11-23 05:40:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-23 05:40:46,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 64 transitions. [2018-11-23 05:40:46,017 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 64 transitions. Word has length 96 [2018-11-23 05:40:46,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:46,017 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 64 transitions. [2018-11-23 05:40:46,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 05:40:46,017 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 64 transitions. [2018-11-23 05:40:46,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-11-23 05:40:46,018 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:46,019 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:46,019 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:46,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:46,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1611334083, now seen corresponding path program 4 times [2018-11-23 05:40:46,019 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:46,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:46,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:46,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:40:46,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 41 proven. 82 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2018-11-23 05:40:46,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:46,090 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:46,096 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 05:40:46,109 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 05:40:46,110 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:40:46,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 74 proven. 118 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-11-23 05:40:46,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:46,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 13 [2018-11-23 05:40:46,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 05:40:46,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 05:40:46,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-11-23 05:40:46,187 INFO L87 Difference]: Start difference. First operand 44 states and 64 transitions. Second operand 13 states. [2018-11-23 05:40:46,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:46,416 INFO L93 Difference]: Finished difference Result 92 states and 146 transitions. [2018-11-23 05:40:46,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 05:40:46,417 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2018-11-23 05:40:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:46,417 INFO L225 Difference]: With dead ends: 92 [2018-11-23 05:40:46,417 INFO L226 Difference]: Without dead ends: 53 [2018-11-23 05:40:46,418 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2018-11-23 05:40:46,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-23 05:40:46,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-11-23 05:40:46,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-23 05:40:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2018-11-23 05:40:46,425 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 83 [2018-11-23 05:40:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:46,427 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2018-11-23 05:40:46,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 05:40:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2018-11-23 05:40:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-23 05:40:46,429 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:46,429 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:46,429 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:46,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:46,430 INFO L82 PathProgramCache]: Analyzing trace with hash 946234379, now seen corresponding path program 5 times [2018-11-23 05:40:46,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:46,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:46,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:46,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:40:46,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 174 proven. 59 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2018-11-23 05:40:46,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:46,499 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:46,506 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 05:40:46,541 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-11-23 05:40:46,541 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:40:46,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2018-11-23 05:40:46,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:46,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 9 [2018-11-23 05:40:46,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 05:40:46,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 05:40:46,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-23 05:40:46,595 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 9 states. [2018-11-23 05:40:46,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:46,688 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2018-11-23 05:40:46,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 05:40:46,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 110 [2018-11-23 05:40:46,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:46,689 INFO L225 Difference]: With dead ends: 62 [2018-11-23 05:40:46,690 INFO L226 Difference]: Without dead ends: 58 [2018-11-23 05:40:46,690 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-23 05:40:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-23 05:40:46,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-11-23 05:40:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-23 05:40:46,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2018-11-23 05:40:46,697 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 110 [2018-11-23 05:40:46,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:46,697 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2018-11-23 05:40:46,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 05:40:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2018-11-23 05:40:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-23 05:40:46,700 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:46,700 INFO L402 BasicCegarLoop]: trace histogram [29, 29, 23, 14, 14, 14, 14, 14, 14, 14, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:46,700 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:46,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:46,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1695807068, now seen corresponding path program 6 times [2018-11-23 05:40:46,700 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:46,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:46,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:46,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:40:46,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 403 proven. 124 refuted. 0 times theorem prover too weak. 1714 trivial. 0 not checked. [2018-11-23 05:40:46,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:46,797 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:46,804 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 05:40:46,878 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2018-11-23 05:40:46,878 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:40:46,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 433 proven. 94 refuted. 0 times theorem prover too weak. 1714 trivial. 0 not checked. [2018-11-23 05:40:46,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:46,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-23 05:40:46,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 05:40:46,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 05:40:46,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-23 05:40:46,962 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand 9 states. [2018-11-23 05:40:47,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:47,070 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2018-11-23 05:40:47,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 05:40:47,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2018-11-23 05:40:47,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:47,071 INFO L225 Difference]: With dead ends: 65 [2018-11-23 05:40:47,072 INFO L226 Difference]: Without dead ends: 61 [2018-11-23 05:40:47,072 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-23 05:40:47,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-23 05:40:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2018-11-23 05:40:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-23 05:40:47,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2018-11-23 05:40:47,078 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 205 [2018-11-23 05:40:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:47,079 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2018-11-23 05:40:47,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 05:40:47,079 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2018-11-23 05:40:47,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-23 05:40:47,081 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:47,083 INFO L402 BasicCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:47,083 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:47,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:47,083 INFO L82 PathProgramCache]: Analyzing trace with hash -516480259, now seen corresponding path program 7 times [2018-11-23 05:40:47,084 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:47,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:47,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:47,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:40:47,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 137 proven. 567 refuted. 0 times theorem prover too weak. 1876 trivial. 0 not checked. [2018-11-23 05:40:47,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:47,176 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:47,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:40:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:47,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 716 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2018-11-23 05:40:47,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:47,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 10 [2018-11-23 05:40:47,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 05:40:47,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 05:40:47,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-23 05:40:47,326 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand 10 states. [2018-11-23 05:40:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:47,467 INFO L93 Difference]: Finished difference Result 70 states and 97 transitions. [2018-11-23 05:40:47,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 05:40:47,467 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 219 [2018-11-23 05:40:47,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:47,468 INFO L225 Difference]: With dead ends: 70 [2018-11-23 05:40:47,468 INFO L226 Difference]: Without dead ends: 66 [2018-11-23 05:40:47,468 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2018-11-23 05:40:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-23 05:40:47,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2018-11-23 05:40:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-23 05:40:47,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 87 transitions. [2018-11-23 05:40:47,475 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 87 transitions. Word has length 219 [2018-11-23 05:40:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:47,476 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 87 transitions. [2018-11-23 05:40:47,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 05:40:47,476 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 87 transitions. [2018-11-23 05:40:47,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-11-23 05:40:47,482 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:47,482 INFO L402 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:47,482 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:47,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:47,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2082787635, now seen corresponding path program 8 times [2018-11-23 05:40:47,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:47,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:47,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:47,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:40:47,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 238 proven. 1112 refuted. 0 times theorem prover too weak. 4689 trivial. 0 not checked. [2018-11-23 05:40:47,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:47,623 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:47,632 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 05:40:47,698 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 05:40:47,698 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:40:47,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 204 proven. 1348 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2018-11-23 05:40:47,796 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:47,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 11 [2018-11-23 05:40:47,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 05:40:47,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 05:40:47,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-23 05:40:47,797 INFO L87 Difference]: Start difference. First operand 63 states and 87 transitions. Second operand 11 states. [2018-11-23 05:40:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:47,917 INFO L93 Difference]: Finished difference Result 72 states and 106 transitions. [2018-11-23 05:40:47,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 05:40:47,917 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 328 [2018-11-23 05:40:47,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:47,919 INFO L225 Difference]: With dead ends: 72 [2018-11-23 05:40:47,919 INFO L226 Difference]: Without dead ends: 68 [2018-11-23 05:40:47,919 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2018-11-23 05:40:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-23 05:40:47,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-11-23 05:40:47,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-23 05:40:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 102 transitions. [2018-11-23 05:40:47,928 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 102 transitions. Word has length 328 [2018-11-23 05:40:47,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:47,929 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 102 transitions. [2018-11-23 05:40:47,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 05:40:47,929 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 102 transitions. [2018-11-23 05:40:47,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2018-11-23 05:40:47,940 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:47,940 INFO L402 BasicCegarLoop]: trace histogram [103, 103, 83, 51, 51, 51, 51, 51, 51, 51, 32, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:47,940 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:47,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:47,940 INFO L82 PathProgramCache]: Analyzing trace with hash -35388943, now seen corresponding path program 9 times [2018-11-23 05:40:47,940 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:47,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:47,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:47,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:40:47,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 29515 backedges. 525 proven. 3190 refuted. 0 times theorem prover too weak. 25800 trivial. 0 not checked. [2018-11-23 05:40:48,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:48,221 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:48,226 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 05:40:48,323 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2018-11-23 05:40:48,323 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:40:48,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 29515 backedges. 486 proven. 3745 refuted. 0 times theorem prover too weak. 25284 trivial. 0 not checked. [2018-11-23 05:40:48,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:48,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2018-11-23 05:40:48,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 05:40:48,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 05:40:48,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-11-23 05:40:48,542 INFO L87 Difference]: Start difference. First operand 68 states and 102 transitions. Second operand 12 states. [2018-11-23 05:40:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:48,685 INFO L93 Difference]: Finished difference Result 77 states and 123 transitions. [2018-11-23 05:40:48,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 05:40:48,685 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 709 [2018-11-23 05:40:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:48,687 INFO L225 Difference]: With dead ends: 77 [2018-11-23 05:40:48,687 INFO L226 Difference]: Without dead ends: 73 [2018-11-23 05:40:48,688 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2018-11-23 05:40:48,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-23 05:40:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-11-23 05:40:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-11-23 05:40:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 119 transitions. [2018-11-23 05:40:48,696 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 119 transitions. Word has length 709 [2018-11-23 05:40:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:48,697 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 119 transitions. [2018-11-23 05:40:48,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 05:40:48,697 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 119 transitions. [2018-11-23 05:40:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2018-11-23 05:40:48,703 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:48,703 INFO L402 BasicCegarLoop]: trace histogram [153, 153, 123, 76, 76, 76, 76, 76, 76, 76, 47, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:48,704 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:48,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:48,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1731648378, now seen corresponding path program 10 times [2018-11-23 05:40:48,704 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:48,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:48,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:48,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:40:48,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 65415 backedges. 1608 proven. 4728 refuted. 0 times theorem prover too weak. 59079 trivial. 0 not checked. [2018-11-23 05:40:49,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:49,316 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:49,327 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 05:40:49,501 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 05:40:49,502 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:40:49,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 65415 backedges. 21250 proven. 712 refuted. 0 times theorem prover too weak. 43453 trivial. 0 not checked. [2018-11-23 05:40:50,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:50,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 19 [2018-11-23 05:40:50,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-23 05:40:50,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-23 05:40:50,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2018-11-23 05:40:50,035 INFO L87 Difference]: Start difference. First operand 73 states and 119 transitions. Second operand 19 states. [2018-11-23 05:40:50,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:50,458 INFO L93 Difference]: Finished difference Result 163 states and 335 transitions. [2018-11-23 05:40:50,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-23 05:40:50,458 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1049 [2018-11-23 05:40:50,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:50,460 INFO L225 Difference]: With dead ends: 163 [2018-11-23 05:40:50,460 INFO L226 Difference]: Without dead ends: 99 [2018-11-23 05:40:50,461 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 1045 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=341, Invalid=1141, Unknown=0, NotChecked=0, Total=1482 [2018-11-23 05:40:50,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-23 05:40:50,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2018-11-23 05:40:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-11-23 05:40:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 136 transitions. [2018-11-23 05:40:50,471 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 136 transitions. Word has length 1049 [2018-11-23 05:40:50,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:50,472 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 136 transitions. [2018-11-23 05:40:50,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-23 05:40:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 136 transitions. [2018-11-23 05:40:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1106 [2018-11-23 05:40:50,482 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:50,483 INFO L402 BasicCegarLoop]: trace histogram [161, 161, 131, 80, 80, 80, 80, 80, 80, 80, 51, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:50,483 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:50,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:50,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1344072572, now seen corresponding path program 11 times [2018-11-23 05:40:50,484 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:50,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:50,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:50,484 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:40:50,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 72675 backedges. 2524 proven. 5883 refuted. 0 times theorem prover too weak. 64268 trivial. 0 not checked. [2018-11-23 05:40:50,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:50,981 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:50,987 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 05:40:51,046 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-11-23 05:40:51,046 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:40:51,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 72675 backedges. 31918 proven. 358 refuted. 0 times theorem prover too weak. 40399 trivial. 0 not checked. [2018-11-23 05:40:51,444 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:51,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 16 [2018-11-23 05:40:51,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-23 05:40:51,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-23 05:40:51,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-11-23 05:40:51,446 INFO L87 Difference]: Start difference. First operand 92 states and 136 transitions. Second operand 16 states. [2018-11-23 05:40:51,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:51,681 INFO L93 Difference]: Finished difference Result 182 states and 309 transitions. [2018-11-23 05:40:51,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-23 05:40:51,682 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1105 [2018-11-23 05:40:51,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:51,683 INFO L225 Difference]: With dead ends: 182 [2018-11-23 05:40:51,683 INFO L226 Difference]: Without dead ends: 99 [2018-11-23 05:40:51,684 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1109 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2018-11-23 05:40:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-23 05:40:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2018-11-23 05:40:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-23 05:40:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 132 transitions. [2018-11-23 05:40:51,693 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 132 transitions. Word has length 1105 [2018-11-23 05:40:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:51,694 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 132 transitions. [2018-11-23 05:40:51,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-23 05:40:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 132 transitions. [2018-11-23 05:40:51,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2018-11-23 05:40:51,701 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:51,701 INFO L402 BasicCegarLoop]: trace histogram [155, 155, 125, 77, 77, 77, 77, 77, 77, 77, 48, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:51,702 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:51,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:51,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1727724409, now seen corresponding path program 12 times [2018-11-23 05:40:51,702 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:51,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:51,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:51,703 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:40:51,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 67194 backedges. 1812 proven. 7857 refuted. 0 times theorem prover too weak. 57525 trivial. 0 not checked. [2018-11-23 05:40:52,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:52,282 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:52,288 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 05:40:52,370 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2018-11-23 05:40:52,371 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:40:52,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 67194 backedges. 31297 proven. 1147 refuted. 0 times theorem prover too weak. 34750 trivial. 0 not checked. [2018-11-23 05:40:52,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:52,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 19 [2018-11-23 05:40:52,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-23 05:40:52,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-23 05:40:52,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-11-23 05:40:52,764 INFO L87 Difference]: Start difference. First operand 89 states and 132 transitions. Second operand 19 states. [2018-11-23 05:40:53,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:53,168 INFO L93 Difference]: Finished difference Result 189 states and 320 transitions. [2018-11-23 05:40:53,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-23 05:40:53,169 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1063 [2018-11-23 05:40:53,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:53,170 INFO L225 Difference]: With dead ends: 189 [2018-11-23 05:40:53,170 INFO L226 Difference]: Without dead ends: 109 [2018-11-23 05:40:53,171 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1070 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=421, Invalid=1385, Unknown=0, NotChecked=0, Total=1806 [2018-11-23 05:40:53,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-11-23 05:40:53,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2018-11-23 05:40:53,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-23 05:40:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 150 transitions. [2018-11-23 05:40:53,176 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 150 transitions. Word has length 1063 [2018-11-23 05:40:53,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:53,176 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 150 transitions. [2018-11-23 05:40:53,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-23 05:40:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 150 transitions. [2018-11-23 05:40:53,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2018-11-23 05:40:53,180 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:53,180 INFO L402 BasicCegarLoop]: trace histogram [135, 135, 109, 67, 67, 67, 67, 67, 67, 67, 42, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:53,181 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:53,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:53,181 INFO L82 PathProgramCache]: Analyzing trace with hash 838202223, now seen corresponding path program 13 times [2018-11-23 05:40:53,181 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:53,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:53,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:53,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:40:53,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 5025 proven. 2236 refuted. 0 times theorem prover too weak. 43649 trivial. 0 not checked. [2018-11-23 05:40:53,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:53,542 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:53,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:40:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:53,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 3715 proven. 7113 refuted. 0 times theorem prover too weak. 40082 trivial. 0 not checked. [2018-11-23 05:40:54,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:54,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 25 [2018-11-23 05:40:54,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-23 05:40:54,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-23 05:40:54,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2018-11-23 05:40:54,120 INFO L87 Difference]: Start difference. First operand 104 states and 150 transitions. Second operand 25 states. [2018-11-23 05:40:54,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:54,715 INFO L93 Difference]: Finished difference Result 262 states and 506 transitions. [2018-11-23 05:40:54,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-23 05:40:54,715 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 927 [2018-11-23 05:40:54,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:54,717 INFO L225 Difference]: With dead ends: 262 [2018-11-23 05:40:54,717 INFO L226 Difference]: Without dead ends: 167 [2018-11-23 05:40:54,719 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 923 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=714, Invalid=2826, Unknown=0, NotChecked=0, Total=3540 [2018-11-23 05:40:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-11-23 05:40:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 130. [2018-11-23 05:40:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-11-23 05:40:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 187 transitions. [2018-11-23 05:40:54,729 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 187 transitions. Word has length 927 [2018-11-23 05:40:54,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:54,729 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 187 transitions. [2018-11-23 05:40:54,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-23 05:40:54,729 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 187 transitions. [2018-11-23 05:40:54,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2018-11-23 05:40:54,733 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:40:54,734 INFO L402 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:40:54,734 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:40:54,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:40:54,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1020040988, now seen corresponding path program 14 times [2018-11-23 05:40:54,734 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:40:54,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:40:54,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:54,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:40:54,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:40:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:40:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2018-11-23 05:40:55,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:40:55,330 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/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 [2018-11-23 05:40:55,336 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 05:40:55,446 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 05:40:55,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:40:55,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:40:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2018-11-23 05:40:55,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:40:55,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2018-11-23 05:40:55,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-23 05:40:55,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-23 05:40:55,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2018-11-23 05:40:55,947 INFO L87 Difference]: Start difference. First operand 130 states and 187 transitions. Second operand 36 states. [2018-11-23 05:40:56,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:40:56,042 INFO L93 Difference]: Finished difference Result 131 states and 188 transitions. [2018-11-23 05:40:56,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-23 05:40:56,042 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 750 [2018-11-23 05:40:56,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:40:56,043 INFO L225 Difference]: With dead ends: 131 [2018-11-23 05:40:56,043 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 05:40:56,043 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 936 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=1061, Unknown=0, NotChecked=0, Total=1332 [2018-11-23 05:40:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 05:40:56,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 05:40:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 05:40:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 05:40:56,044 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 750 [2018-11-23 05:40:56,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:40:56,044 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 05:40:56,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-23 05:40:56,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 05:40:56,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 05:40:56,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 05:40:56,312 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 7 [2018-11-23 05:40:56,566 WARN L180 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 45 [2018-11-23 05:40:56,567 INFO L448 ceAbstractionStarter]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2018-11-23 05:40:56,567 INFO L451 ceAbstractionStarter]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2018-11-23 05:40:56,567 INFO L444 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (<= |fibonacci_#in~n| fibonacci_~n) (<= 2 fibonacci_~n) (<= fibonacci_~n |fibonacci_#in~n|)) [2018-11-23 05:40:56,567 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L444 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse1 (<= 1 |fibonacci_#t~ret0|)) (.cse3 (<= 6 fibonacci_~n)) (.cse0 (<= |fibonacci_#in~n| fibonacci_~n)) (.cse2 (<= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= |fibonacci_#in~n| 3) .cse0 .cse1 (<= 3 |fibonacci_#in~n|) .cse2) (and .cse1 (<= |fibonacci_#in~n| 2) (<= 2 fibonacci_~n) .cse2) (and (<= 3 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 5) (<= 5 fibonacci_~n) .cse2) (and (<= 13 |fibonacci_#t~ret0|) .cse0 (<= |fibonacci_#in~n| 8) .cse3 .cse2) (and (<= 8 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 7) (<= 7 fibonacci_~n) .cse2) (and (<= 5 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 6) .cse3 .cse2) (and (<= 4 |fibonacci_#in~n|) .cse0 (<= fibonacci_~n 4) (<= 2 |fibonacci_#t~ret0|)) (and (<= 21 |fibonacci_#t~ret0|) .cse0 (<= 8 |fibonacci_#in~n|) .cse2))) [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 05:40:56,568 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 35) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L451 ceAbstractionStarter]: At program point L30(line 30) the Hoare annotation is: true [2018-11-23 05:40:56,568 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 29) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 25 36) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 25 36) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2018-11-23 05:40:56,568 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2018-11-23 05:40:56,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:40:56 BoogieIcfgContainer [2018-11-23 05:40:56,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 05:40:56,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 05:40:56,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 05:40:56,571 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 05:40:56,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:40:44" (3/4) ... [2018-11-23 05:40:56,574 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 05:40:56,579 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2018-11-23 05:40:56,579 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 05:40:56,579 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 05:40:56,582 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 05:40:56,582 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 05:40:56,582 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 05:40:56,606 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c3a1d192-619b-4bf7-b78f-2d2228f4158d/bin-2019/uautomizer/witness.graphml [2018-11-23 05:40:56,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 05:40:56,607 INFO L168 Benchmark]: Toolchain (without parser) took 12440.04 ms. Allocated memory was 1.0 GB in the beginning and 2.8 GB in the end (delta: 1.8 GB). Free memory was 959.7 MB in the beginning and 2.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 708.9 MB. Max. memory is 11.5 GB. [2018-11-23 05:40:56,607 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:40:56,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.00 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:40:56,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.10 ms. Allocated memory is still 1.0 GB. Free memory is still 948.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:40:56,608 INFO L168 Benchmark]: Boogie Preprocessor took 10.95 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:40:56,610 INFO L168 Benchmark]: RCFGBuilder took 186.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -185.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 05:40:56,610 INFO L168 Benchmark]: TraceAbstraction took 12051.95 ms. Allocated memory was 1.2 GB in the beginning and 2.8 GB in the end (delta: 1.6 GB). Free memory was 1.1 GB in the beginning and 2.0 GB in the end (delta: -900.5 MB). Peak memory consumption was 732.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:40:56,610 INFO L168 Benchmark]: Witness Printer took 35.30 ms. Allocated memory is still 2.8 GB. Free memory is still 2.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:40:56,612 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.00 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.10 ms. Allocated memory is still 1.0 GB. Free memory is still 948.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.95 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 186.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -185.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12051.95 ms. Allocated memory was 1.2 GB in the beginning and 2.8 GB in the end (delta: 1.6 GB). Free memory was 1.1 GB in the beginning and 2.0 GB in the end (delta: -900.5 MB). Peak memory consumption was 732.7 MB. Max. memory is 11.5 GB. * Witness Printer took 35.30 ms. Allocated memory is still 2.8 GB. Free memory is still 2.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 12.0s OverallTime, 17 OverallIterations, 161 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 421 SDtfs, 905 SDslu, 1611 SDs, 0 SdLazy, 2656 SolverSat, 1013 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7298 GetRequests, 6955 SyntacticMatches, 3 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2248 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=16, 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: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 76 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 278 PreInvPairs, 383 NumberOfFragments, 127 HoareAnnotationTreeSize, 278 FomulaSimplifications, 1671 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3588 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 13509 NumberOfCodeBlocks, 11131 NumberOfCodeBlocksAsserted, 149 NumberOfCheckSat, 13477 ConstructedInterpolants, 0 QuantifiedInterpolants, 14135977 SizeOfPredicates, 101 NumberOfNonLiveVariables, 9587 ConjunctsInSsa, 425 ConjunctsInUnsatCore, 32 InterpolantComputations, 2 PerfectInterpolantSequences, 610649/662040 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...