./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.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_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 45f0d0ab6d17adbe7cd7f36bcd9ec097795f4c36 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:42:52,201 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 05:42:52,202 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 05:42:52,210 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 05:42:52,210 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 05:42:52,210 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 05:42:52,211 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 05:42:52,212 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 05:42:52,213 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 05:42:52,214 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 05:42:52,215 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 05:42:52,215 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 05:42:52,215 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 05:42:52,216 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 05:42:52,217 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 05:42:52,217 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 05:42:52,218 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 05:42:52,219 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 05:42:52,221 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 05:42:52,222 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 05:42:52,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 05:42:52,223 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 05:42:52,225 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 05:42:52,225 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 05:42:52,225 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 05:42:52,226 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 05:42:52,227 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 05:42:52,227 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 05:42:52,228 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 05:42:52,229 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 05:42:52,229 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 05:42:52,229 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 05:42:52,230 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 05:42:52,230 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 05:42:52,230 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 05:42:52,231 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 05:42:52,231 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 05:42:52,241 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 05:42:52,241 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 05:42:52,241 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 05:42:52,242 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 05:42:52,242 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 05:42:52,242 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 05:42:52,242 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 05:42:52,242 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 05:42:52,243 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 05:42:52,243 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 05:42:52,243 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 05:42:52,243 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 05:42:52,243 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 05:42:52,243 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 05:42:52,243 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 05:42:52,243 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 05:42:52,243 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 05:42:52,244 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 05:42:52,244 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 05:42:52,244 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 05:42:52,244 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 05:42:52,244 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 05:42:52,244 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 05:42:52,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 05:42:52,244 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 05:42:52,244 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 05:42:52,245 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 05:42:52,245 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 05:42:52,245 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 05:42:52,245 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 05:42:52,245 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_01f2090c-6b43-489b-892c-56ed370d1c58/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 -> 45f0d0ab6d17adbe7cd7f36bcd9ec097795f4c36 [2018-11-23 05:42:52,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 05:42:52,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 05:42:52,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 05:42:52,280 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 05:42:52,280 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 05:42:52,281 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/../../sv-benchmarks/c/psyco/psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c [2018-11-23 05:42:52,318 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/data/0d00f0e75/4f08c044d2ae46c4a795e16259a61069/FLAG50fcb493f [2018-11-23 05:42:52,756 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 05:42:52,757 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/sv-benchmarks/c/psyco/psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c [2018-11-23 05:42:52,766 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/data/0d00f0e75/4f08c044d2ae46c4a795e16259a61069/FLAG50fcb493f [2018-11-23 05:42:52,778 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/data/0d00f0e75/4f08c044d2ae46c4a795e16259a61069 [2018-11-23 05:42:52,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 05:42:52,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 05:42:52,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 05:42:52,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 05:42:52,786 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 05:42:52,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:42:52" (1/1) ... [2018-11-23 05:42:52,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebf8353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:52, skipping insertion in model container [2018-11-23 05:42:52,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:42:52" (1/1) ... [2018-11-23 05:42:52,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 05:42:52,827 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 05:42:53,002 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:42:53,006 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 05:42:53,056 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 05:42:53,069 INFO L195 MainTranslator]: Completed translation [2018-11-23 05:42:53,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53 WrapperNode [2018-11-23 05:42:53,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 05:42:53,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 05:42:53,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 05:42:53,070 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 05:42:53,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53" (1/1) ... [2018-11-23 05:42:53,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53" (1/1) ... [2018-11-23 05:42:53,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 05:42:53,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 05:42:53,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 05:42:53,139 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 05:42:53,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53" (1/1) ... [2018-11-23 05:42:53,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53" (1/1) ... [2018-11-23 05:42:53,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53" (1/1) ... [2018-11-23 05:42:53,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53" (1/1) ... [2018-11-23 05:42:53,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53" (1/1) ... [2018-11-23 05:42:53,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53" (1/1) ... [2018-11-23 05:42:53,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53" (1/1) ... [2018-11-23 05:42:53,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 05:42:53,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 05:42:53,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 05:42:53,178 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 05:42:53,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:42:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 05:42:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 05:42:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 05:42:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 05:42:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 05:42:53,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 05:42:53,801 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 05:42:53,802 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-23 05:42:53,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:42:53 BoogieIcfgContainer [2018-11-23 05:42:53,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 05:42:53,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 05:42:53,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 05:42:53,805 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 05:42:53,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:42:52" (1/3) ... [2018-11-23 05:42:53,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd8a8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:42:53, skipping insertion in model container [2018-11-23 05:42:53,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:42:53" (2/3) ... [2018-11-23 05:42:53,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd8a8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:42:53, skipping insertion in model container [2018-11-23 05:42:53,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:42:53" (3/3) ... [2018-11-23 05:42:53,807 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c [2018-11-23 05:42:53,815 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 05:42:53,822 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 05:42:53,835 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 05:42:53,860 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 05:42:53,860 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 05:42:53,860 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 05:42:53,861 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 05:42:53,861 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 05:42:53,861 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 05:42:53,861 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 05:42:53,861 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 05:42:53,861 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 05:42:53,875 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2018-11-23 05:42:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 05:42:53,880 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:53,881 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:53,883 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:53,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:53,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1483071650, now seen corresponding path program 1 times [2018-11-23 05:42:53,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:53,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:53,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:53,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:53,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:53,983 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 05:42:53,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:42:53,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 05:42:53,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 05:42:53,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 05:42:53,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 05:42:54,001 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 2 states. [2018-11-23 05:42:54,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:54,025 INFO L93 Difference]: Finished difference Result 222 states and 422 transitions. [2018-11-23 05:42:54,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 05:42:54,026 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-23 05:42:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:54,037 INFO L225 Difference]: With dead ends: 222 [2018-11-23 05:42:54,037 INFO L226 Difference]: Without dead ends: 104 [2018-11-23 05:42:54,040 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 05:42:54,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-23 05:42:54,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-11-23 05:42:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-23 05:42:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 169 transitions. [2018-11-23 05:42:54,074 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 169 transitions. Word has length 13 [2018-11-23 05:42:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:54,074 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 169 transitions. [2018-11-23 05:42:54,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 05:42:54,074 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 169 transitions. [2018-11-23 05:42:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 05:42:54,075 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:54,075 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:54,075 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:54,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:54,075 INFO L82 PathProgramCache]: Analyzing trace with hash -736931587, now seen corresponding path program 1 times [2018-11-23 05:42:54,075 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:54,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:54,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:54,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:54,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:54,132 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 05:42:54,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:42:54,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 05:42:54,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:42:54,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:42:54,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:54,133 INFO L87 Difference]: Start difference. First operand 104 states and 169 transitions. Second operand 3 states. [2018-11-23 05:42:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:54,223 INFO L93 Difference]: Finished difference Result 205 states and 336 transitions. [2018-11-23 05:42:54,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:42:54,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-23 05:42:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:54,225 INFO L225 Difference]: With dead ends: 205 [2018-11-23 05:42:54,225 INFO L226 Difference]: Without dead ends: 107 [2018-11-23 05:42:54,226 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-11-23 05:42:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-11-23 05:42:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-11-23 05:42:54,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 172 transitions. [2018-11-23 05:42:54,233 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 172 transitions. Word has length 14 [2018-11-23 05:42:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:54,234 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 172 transitions. [2018-11-23 05:42:54,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:42:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 172 transitions. [2018-11-23 05:42:54,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 05:42:54,234 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:54,234 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:54,236 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:54,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1504395429, now seen corresponding path program 1 times [2018-11-23 05:42:54,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:54,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:54,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:54,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:54,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:54,459 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 16 [2018-11-23 05:42:54,766 WARN L180 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2018-11-23 05:42:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:42:54,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:42:54,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 05:42:54,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:42:54,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:42:54,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:42:54,770 INFO L87 Difference]: Start difference. First operand 107 states and 172 transitions. Second operand 4 states. [2018-11-23 05:42:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:54,970 INFO L93 Difference]: Finished difference Result 209 states and 338 transitions. [2018-11-23 05:42:54,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:42:54,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-11-23 05:42:54,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:54,973 INFO L225 Difference]: With dead ends: 209 [2018-11-23 05:42:54,973 INFO L226 Difference]: Without dead ends: 190 [2018-11-23 05:42:54,973 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:42:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-11-23 05:42:54,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 176. [2018-11-23 05:42:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-11-23 05:42:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 285 transitions. [2018-11-23 05:42:54,987 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 285 transitions. Word has length 19 [2018-11-23 05:42:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:54,987 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 285 transitions. [2018-11-23 05:42:54,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:42:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 285 transitions. [2018-11-23 05:42:54,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 05:42:54,988 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:54,988 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:54,988 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:54,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:54,988 INFO L82 PathProgramCache]: Analyzing trace with hash 2142865338, now seen corresponding path program 1 times [2018-11-23 05:42:54,989 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:54,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:54,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:54,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:54,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:42:55,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:42:55,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 05:42:55,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:42:55,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:42:55,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:55,044 INFO L87 Difference]: Start difference. First operand 176 states and 285 transitions. Second operand 3 states. [2018-11-23 05:42:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:55,064 INFO L93 Difference]: Finished difference Result 297 states and 481 transitions. [2018-11-23 05:42:55,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:42:55,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-23 05:42:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:55,066 INFO L225 Difference]: With dead ends: 297 [2018-11-23 05:42:55,066 INFO L226 Difference]: Without dead ends: 128 [2018-11-23 05:42:55,067 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:55,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-11-23 05:42:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2018-11-23 05:42:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-11-23 05:42:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 198 transitions. [2018-11-23 05:42:55,073 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 198 transitions. Word has length 20 [2018-11-23 05:42:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:55,073 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 198 transitions. [2018-11-23 05:42:55,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:42:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 198 transitions. [2018-11-23 05:42:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 05:42:55,074 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:55,074 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:55,075 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:55,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:55,075 INFO L82 PathProgramCache]: Analyzing trace with hash -2011475352, now seen corresponding path program 1 times [2018-11-23 05:42:55,075 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:55,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:55,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:55,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:55,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 05:42:55,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:42:55,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 05:42:55,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:42:55,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:42:55,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:55,125 INFO L87 Difference]: Start difference. First operand 126 states and 198 transitions. Second operand 3 states. [2018-11-23 05:42:55,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:55,165 INFO L93 Difference]: Finished difference Result 230 states and 362 transitions. [2018-11-23 05:42:55,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:42:55,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-23 05:42:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:55,166 INFO L225 Difference]: With dead ends: 230 [2018-11-23 05:42:55,166 INFO L226 Difference]: Without dead ends: 111 [2018-11-23 05:42:55,167 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-23 05:42:55,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2018-11-23 05:42:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-11-23 05:42:55,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 167 transitions. [2018-11-23 05:42:55,173 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 167 transitions. Word has length 25 [2018-11-23 05:42:55,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:55,173 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 167 transitions. [2018-11-23 05:42:55,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:42:55,173 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 167 transitions. [2018-11-23 05:42:55,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 05:42:55,174 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:55,174 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:55,175 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:55,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:55,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1818456969, now seen corresponding path program 1 times [2018-11-23 05:42:55,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:55,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:55,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:55,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:55,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:42:55,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:42:55,259 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:42:55,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:55,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:42:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:42:55,349 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:42:55,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-23 05:42:55,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 05:42:55,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 05:42:55,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:42:55,350 INFO L87 Difference]: Start difference. First operand 109 states and 167 transitions. Second operand 4 states. [2018-11-23 05:42:55,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:55,456 INFO L93 Difference]: Finished difference Result 192 states and 299 transitions. [2018-11-23 05:42:55,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 05:42:55,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-23 05:42:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:55,458 INFO L225 Difference]: With dead ends: 192 [2018-11-23 05:42:55,458 INFO L226 Difference]: Without dead ends: 174 [2018-11-23 05:42:55,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 05:42:55,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-11-23 05:42:55,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2018-11-23 05:42:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-11-23 05:42:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 265 transitions. [2018-11-23 05:42:55,468 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 265 transitions. Word has length 27 [2018-11-23 05:42:55,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:55,469 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 265 transitions. [2018-11-23 05:42:55,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 05:42:55,469 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 265 transitions. [2018-11-23 05:42:55,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-23 05:42:55,470 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:55,470 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:55,470 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:55,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:55,472 INFO L82 PathProgramCache]: Analyzing trace with hash 549034740, now seen corresponding path program 1 times [2018-11-23 05:42:55,472 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:55,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:55,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:55,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:55,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:55,798 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 33 [2018-11-23 05:42:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:42:55,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:42:55,803 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:42:55,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:55,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:42:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:42:55,915 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:42:55,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-23 05:42:55,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 05:42:55,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 05:42:55,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 05:42:55,916 INFO L87 Difference]: Start difference. First operand 172 states and 265 transitions. Second operand 6 states. [2018-11-23 05:42:56,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:56,039 INFO L93 Difference]: Finished difference Result 230 states and 355 transitions. [2018-11-23 05:42:56,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 05:42:56,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2018-11-23 05:42:56,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:56,040 INFO L225 Difference]: With dead ends: 230 [2018-11-23 05:42:56,041 INFO L226 Difference]: Without dead ends: 226 [2018-11-23 05:42:56,041 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 05:42:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-11-23 05:42:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 217. [2018-11-23 05:42:56,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-11-23 05:42:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 339 transitions. [2018-11-23 05:42:56,049 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 339 transitions. Word has length 28 [2018-11-23 05:42:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:56,049 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 339 transitions. [2018-11-23 05:42:56,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 05:42:56,049 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 339 transitions. [2018-11-23 05:42:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 05:42:56,050 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:56,050 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:56,050 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:56,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:56,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1113591962, now seen corresponding path program 1 times [2018-11-23 05:42:56,050 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:56,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:56,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:56,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:56,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 05:42:56,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:42:56,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 05:42:56,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:42:56,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:42:56,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:56,085 INFO L87 Difference]: Start difference. First operand 217 states and 339 transitions. Second operand 3 states. [2018-11-23 05:42:56,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:56,118 INFO L93 Difference]: Finished difference Result 391 states and 608 transitions. [2018-11-23 05:42:56,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:42:56,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-11-23 05:42:56,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:56,120 INFO L225 Difference]: With dead ends: 391 [2018-11-23 05:42:56,120 INFO L226 Difference]: Without dead ends: 202 [2018-11-23 05:42:56,121 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:56,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-11-23 05:42:56,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2018-11-23 05:42:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-11-23 05:42:56,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 301 transitions. [2018-11-23 05:42:56,128 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 301 transitions. Word has length 29 [2018-11-23 05:42:56,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:56,129 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 301 transitions. [2018-11-23 05:42:56,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:42:56,129 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 301 transitions. [2018-11-23 05:42:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 05:42:56,130 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:56,130 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:56,130 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:56,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:56,130 INFO L82 PathProgramCache]: Analyzing trace with hash 454582667, now seen corresponding path program 1 times [2018-11-23 05:42:56,130 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:56,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:56,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:56,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:56,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:56,363 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 29 [2018-11-23 05:42:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:42:56,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:42:56,367 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:42:56,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:56,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:42:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 05:42:56,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 05:42:56,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-11-23 05:42:56,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 05:42:56,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 05:42:56,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-23 05:42:56,467 INFO L87 Difference]: Start difference. First operand 200 states and 301 transitions. Second operand 6 states. [2018-11-23 05:42:56,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:56,629 INFO L93 Difference]: Finished difference Result 357 states and 542 transitions. [2018-11-23 05:42:56,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 05:42:56,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-11-23 05:42:56,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:56,631 INFO L225 Difference]: With dead ends: 357 [2018-11-23 05:42:56,631 INFO L226 Difference]: Without dead ends: 341 [2018-11-23 05:42:56,631 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-23 05:42:56,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-11-23 05:42:56,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 312. [2018-11-23 05:42:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-11-23 05:42:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 471 transitions. [2018-11-23 05:42:56,641 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 471 transitions. Word has length 31 [2018-11-23 05:42:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:56,641 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 471 transitions. [2018-11-23 05:42:56,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 05:42:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 471 transitions. [2018-11-23 05:42:56,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-23 05:42:56,642 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:56,643 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:56,643 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:56,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:56,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1646630523, now seen corresponding path program 1 times [2018-11-23 05:42:56,643 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:56,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:56,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:56,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:56,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-23 05:42:56,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:42:56,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 05:42:56,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:42:56,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:42:56,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:56,671 INFO L87 Difference]: Start difference. First operand 312 states and 471 transitions. Second operand 3 states. [2018-11-23 05:42:56,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:56,707 INFO L93 Difference]: Finished difference Result 512 states and 778 transitions. [2018-11-23 05:42:56,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:42:56,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-23 05:42:56,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:56,709 INFO L225 Difference]: With dead ends: 512 [2018-11-23 05:42:56,709 INFO L226 Difference]: Without dead ends: 246 [2018-11-23 05:42:56,710 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-11-23 05:42:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2018-11-23 05:42:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-11-23 05:42:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 364 transitions. [2018-11-23 05:42:56,717 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 364 transitions. Word has length 37 [2018-11-23 05:42:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:56,718 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 364 transitions. [2018-11-23 05:42:56,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:42:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 364 transitions. [2018-11-23 05:42:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-23 05:42:56,718 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:56,719 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:56,719 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:56,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:56,719 INFO L82 PathProgramCache]: Analyzing trace with hash 939353414, now seen corresponding path program 1 times [2018-11-23 05:42:56,719 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:56,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:56,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:56,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:56,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:42:56,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:42:56,963 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:42:56,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:57,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:42:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:42:57,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:42:57,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-11-23 05:42:57,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 05:42:57,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 05:42:57,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-23 05:42:57,077 INFO L87 Difference]: Start difference. First operand 244 states and 364 transitions. Second operand 8 states. [2018-11-23 05:42:57,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:57,171 INFO L93 Difference]: Finished difference Result 254 states and 373 transitions. [2018-11-23 05:42:57,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 05:42:57,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2018-11-23 05:42:57,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:57,185 INFO L225 Difference]: With dead ends: 254 [2018-11-23 05:42:57,185 INFO L226 Difference]: Without dead ends: 252 [2018-11-23 05:42:57,185 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-23 05:42:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-11-23 05:42:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 245. [2018-11-23 05:42:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-11-23 05:42:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 365 transitions. [2018-11-23 05:42:57,193 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 365 transitions. Word has length 40 [2018-11-23 05:42:57,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:57,194 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 365 transitions. [2018-11-23 05:42:57,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 05:42:57,194 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 365 transitions. [2018-11-23 05:42:57,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-23 05:42:57,194 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:57,194 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:57,195 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:57,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:57,195 INFO L82 PathProgramCache]: Analyzing trace with hash -819577482, now seen corresponding path program 1 times [2018-11-23 05:42:57,195 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:57,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:57,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:57,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:57,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-23 05:42:57,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:42:57,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 05:42:57,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:42:57,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:42:57,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:57,222 INFO L87 Difference]: Start difference. First operand 245 states and 365 transitions. Second operand 3 states. [2018-11-23 05:42:57,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:57,258 INFO L93 Difference]: Finished difference Result 428 states and 636 transitions. [2018-11-23 05:42:57,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:42:57,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-11-23 05:42:57,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:57,260 INFO L225 Difference]: With dead ends: 428 [2018-11-23 05:42:57,260 INFO L226 Difference]: Without dead ends: 229 [2018-11-23 05:42:57,261 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-11-23 05:42:57,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2018-11-23 05:42:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-11-23 05:42:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 328 transitions. [2018-11-23 05:42:57,267 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 328 transitions. Word has length 41 [2018-11-23 05:42:57,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:57,267 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 328 transitions. [2018-11-23 05:42:57,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:42:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 328 transitions. [2018-11-23 05:42:57,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-23 05:42:57,268 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:57,268 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:57,268 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:57,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:57,269 INFO L82 PathProgramCache]: Analyzing trace with hash 711556807, now seen corresponding path program 1 times [2018-11-23 05:42:57,269 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:57,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:57,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:57,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:57,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-23 05:42:57,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 05:42:57,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 05:42:57,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 05:42:57,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 05:42:57,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:57,298 INFO L87 Difference]: Start difference. First operand 227 states and 328 transitions. Second operand 3 states. [2018-11-23 05:42:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:57,347 INFO L93 Difference]: Finished difference Result 309 states and 446 transitions. [2018-11-23 05:42:57,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 05:42:57,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-11-23 05:42:57,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:57,348 INFO L225 Difference]: With dead ends: 309 [2018-11-23 05:42:57,348 INFO L226 Difference]: Without dead ends: 147 [2018-11-23 05:42:57,349 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 05:42:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-11-23 05:42:57,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2018-11-23 05:42:57,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-11-23 05:42:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 203 transitions. [2018-11-23 05:42:57,354 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 203 transitions. Word has length 50 [2018-11-23 05:42:57,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:57,354 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 203 transitions. [2018-11-23 05:42:57,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 05:42:57,354 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 203 transitions. [2018-11-23 05:42:57,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-23 05:42:57,355 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:57,355 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:57,355 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:57,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:57,355 INFO L82 PathProgramCache]: Analyzing trace with hash -370372205, now seen corresponding path program 1 times [2018-11-23 05:42:57,355 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:57,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:57,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:57,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:57,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 05:42:57,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:42:57,423 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:42:57,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:42:57,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:42:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:42:57,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:42:57,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-11-23 05:42:57,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 05:42:57,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 05:42:57,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-23 05:42:57,555 INFO L87 Difference]: Start difference. First operand 145 states and 203 transitions. Second operand 9 states. [2018-11-23 05:42:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:42:57,638 INFO L93 Difference]: Finished difference Result 188 states and 263 transitions. [2018-11-23 05:42:57,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 05:42:57,639 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2018-11-23 05:42:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:42:57,640 INFO L225 Difference]: With dead ends: 188 [2018-11-23 05:42:57,640 INFO L226 Difference]: Without dead ends: 184 [2018-11-23 05:42:57,640 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-23 05:42:57,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-11-23 05:42:57,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2018-11-23 05:42:57,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-11-23 05:42:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 254 transitions. [2018-11-23 05:42:57,647 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 254 transitions. Word has length 51 [2018-11-23 05:42:57,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:42:57,647 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 254 transitions. [2018-11-23 05:42:57,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 05:42:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 254 transitions. [2018-11-23 05:42:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-23 05:42:57,648 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:42:57,648 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:42:57,648 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:42:57,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:42:57,649 INFO L82 PathProgramCache]: Analyzing trace with hash -379328264, now seen corresponding path program 1 times [2018-11-23 05:42:57,649 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:42:57,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:42:57,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:57,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:42:57,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:42:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:04,101 WARN L180 SmtUtils]: Spent 6.20 s on a formula simplification. DAG size of input: 194 DAG size of output: 36 [2018-11-23 05:43:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:04,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:04,108 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:43:04,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:04,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:04,263 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:04,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2018-11-23 05:43:04,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 05:43:04,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 05:43:04,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-23 05:43:04,263 INFO L87 Difference]: Start difference. First operand 181 states and 254 transitions. Second operand 11 states. [2018-11-23 05:43:04,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:04,616 INFO L93 Difference]: Finished difference Result 187 states and 260 transitions. [2018-11-23 05:43:04,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 05:43:04,617 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2018-11-23 05:43:04,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:04,618 INFO L225 Difference]: With dead ends: 187 [2018-11-23 05:43:04,618 INFO L226 Difference]: Without dead ends: 185 [2018-11-23 05:43:04,619 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-11-23 05:43:04,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-11-23 05:43:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2018-11-23 05:43:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-11-23 05:43:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 255 transitions. [2018-11-23 05:43:04,628 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 255 transitions. Word has length 61 [2018-11-23 05:43:04,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:04,628 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 255 transitions. [2018-11-23 05:43:04,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 05:43:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 255 transitions. [2018-11-23 05:43:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-23 05:43:04,629 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:04,629 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:04,629 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:04,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:04,630 INFO L82 PathProgramCache]: Analyzing trace with hash 638427137, now seen corresponding path program 1 times [2018-11-23 05:43:04,630 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:43:04,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:43:04,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:04,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:04,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:05,042 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 33 [2018-11-23 05:43:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:05,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:05,050 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:43:05,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:05,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:05,168 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:05,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9 [2018-11-23 05:43:05,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 05:43:05,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 05:43:05,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-23 05:43:05,169 INFO L87 Difference]: Start difference. First operand 182 states and 255 transitions. Second operand 9 states. [2018-11-23 05:43:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:05,258 INFO L93 Difference]: Finished difference Result 203 states and 284 transitions. [2018-11-23 05:43:05,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 05:43:05,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2018-11-23 05:43:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:05,260 INFO L225 Difference]: With dead ends: 203 [2018-11-23 05:43:05,260 INFO L226 Difference]: Without dead ends: 200 [2018-11-23 05:43:05,261 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-23 05:43:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-11-23 05:43:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-11-23 05:43:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-11-23 05:43:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 280 transitions. [2018-11-23 05:43:05,267 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 280 transitions. Word has length 70 [2018-11-23 05:43:05,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:05,268 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 280 transitions. [2018-11-23 05:43:05,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 05:43:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 280 transitions. [2018-11-23 05:43:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-23 05:43:05,269 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:05,269 INFO L402 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:05,269 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:05,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:05,269 INFO L82 PathProgramCache]: Analyzing trace with hash -784011109, now seen corresponding path program 1 times [2018-11-23 05:43:05,269 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:43:05,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:43:05,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:05,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:05,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:05,394 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 81 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-23 05:43:05,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:05,394 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:43:05,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:05,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 81 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-23 05:43:05,502 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:05,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-23 05:43:05,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 05:43:05,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 05:43:05,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-23 05:43:05,503 INFO L87 Difference]: Start difference. First operand 200 states and 280 transitions. Second operand 7 states. [2018-11-23 05:43:05,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:05,559 INFO L93 Difference]: Finished difference Result 224 states and 311 transitions. [2018-11-23 05:43:05,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 05:43:05,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2018-11-23 05:43:05,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:05,561 INFO L225 Difference]: With dead ends: 224 [2018-11-23 05:43:05,561 INFO L226 Difference]: Without dead ends: 221 [2018-11-23 05:43:05,561 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-23 05:43:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-11-23 05:43:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2018-11-23 05:43:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-11-23 05:43:05,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 305 transitions. [2018-11-23 05:43:05,566 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 305 transitions. Word has length 79 [2018-11-23 05:43:05,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:05,566 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 305 transitions. [2018-11-23 05:43:05,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 05:43:05,566 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 305 transitions. [2018-11-23 05:43:05,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-23 05:43:05,567 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:05,567 INFO L402 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:05,567 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:05,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:05,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1961279789, now seen corresponding path program 1 times [2018-11-23 05:43:05,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:43:05,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:43:05,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:05,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:05,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:07,928 WARN L180 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 133 DAG size of output: 40 [2018-11-23 05:43:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:07,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:07,941 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:43:07,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:08,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:08,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:08,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-23 05:43:08,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 05:43:08,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 05:43:08,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-11-23 05:43:08,150 INFO L87 Difference]: Start difference. First operand 218 states and 305 transitions. Second operand 11 states. [2018-11-23 05:43:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:08,254 INFO L93 Difference]: Finished difference Result 221 states and 308 transitions. [2018-11-23 05:43:08,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 05:43:08,254 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2018-11-23 05:43:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:08,255 INFO L225 Difference]: With dead ends: 221 [2018-11-23 05:43:08,255 INFO L226 Difference]: Without dead ends: 219 [2018-11-23 05:43:08,256 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-11-23 05:43:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-11-23 05:43:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-11-23 05:43:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-11-23 05:43:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 306 transitions. [2018-11-23 05:43:08,262 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 306 transitions. Word has length 82 [2018-11-23 05:43:08,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:08,262 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 306 transitions. [2018-11-23 05:43:08,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 05:43:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 306 transitions. [2018-11-23 05:43:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-23 05:43:08,263 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:08,264 INFO L402 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:08,264 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:08,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash -101241370, now seen corresponding path program 1 times [2018-11-23 05:43:08,264 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:43:08,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:43:08,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:08,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:08,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 16 proven. 123 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-23 05:43:08,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:08,390 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:43:08,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:08,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:08,646 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 16 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:08,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:08,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2018-11-23 05:43:08,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 05:43:08,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 05:43:08,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-11-23 05:43:08,669 INFO L87 Difference]: Start difference. First operand 219 states and 306 transitions. Second operand 15 states. [2018-11-23 05:43:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:08,795 INFO L93 Difference]: Finished difference Result 262 states and 366 transitions. [2018-11-23 05:43:08,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 05:43:08,796 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 93 [2018-11-23 05:43:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:08,797 INFO L225 Difference]: With dead ends: 262 [2018-11-23 05:43:08,797 INFO L226 Difference]: Without dead ends: 258 [2018-11-23 05:43:08,797 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-11-23 05:43:08,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-11-23 05:43:08,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2018-11-23 05:43:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-11-23 05:43:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 357 transitions. [2018-11-23 05:43:08,802 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 357 transitions. Word has length 93 [2018-11-23 05:43:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:08,803 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 357 transitions. [2018-11-23 05:43:08,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 05:43:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 357 transitions. [2018-11-23 05:43:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-23 05:43:08,803 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:08,804 INFO L402 BasicCegarLoop]: trace histogram [10, 9, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:08,804 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:08,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:08,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1744733813, now seen corresponding path program 2 times [2018-11-23 05:43:08,804 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:43:08,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:43:08,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:08,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 05:43:08,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:09,271 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 39 [2018-11-23 05:43:09,530 WARN L180 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 36 [2018-11-23 05:43:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 18 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:09,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:09,552 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:43:09,558 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 05:43:09,660 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 05:43:09,660 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:43:09,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 18 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:09,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:09,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 15 [2018-11-23 05:43:09,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 05:43:09,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 05:43:09,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-11-23 05:43:09,791 INFO L87 Difference]: Start difference. First operand 255 states and 357 transitions. Second operand 15 states. [2018-11-23 05:43:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:10,238 INFO L93 Difference]: Finished difference Result 265 states and 367 transitions. [2018-11-23 05:43:10,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-23 05:43:10,239 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 103 [2018-11-23 05:43:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:10,240 INFO L225 Difference]: With dead ends: 265 [2018-11-23 05:43:10,240 INFO L226 Difference]: Without dead ends: 263 [2018-11-23 05:43:10,241 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2018-11-23 05:43:10,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-11-23 05:43:10,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 256. [2018-11-23 05:43:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-11-23 05:43:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 358 transitions. [2018-11-23 05:43:10,248 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 358 transitions. Word has length 103 [2018-11-23 05:43:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:10,248 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 358 transitions. [2018-11-23 05:43:10,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 05:43:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 358 transitions. [2018-11-23 05:43:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-23 05:43:10,249 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:10,249 INFO L402 BasicCegarLoop]: trace histogram [11, 10, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:10,249 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:10,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:10,250 INFO L82 PathProgramCache]: Analyzing trace with hash 769524942, now seen corresponding path program 2 times [2018-11-23 05:43:10,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:43:10,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:43:10,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:10,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:43:10,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:10,587 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 39 [2018-11-23 05:43:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 203 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-23 05:43:10,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:10,601 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:43:10,612 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 05:43:10,689 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 05:43:10,689 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:43:10,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:10,862 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:10,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2018-11-23 05:43:10,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-23 05:43:10,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-23 05:43:10,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2018-11-23 05:43:10,863 INFO L87 Difference]: Start difference. First operand 256 states and 358 transitions. Second operand 21 states. [2018-11-23 05:43:11,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:11,132 INFO L93 Difference]: Finished difference Result 277 states and 387 transitions. [2018-11-23 05:43:11,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 05:43:11,133 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 112 [2018-11-23 05:43:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:11,135 INFO L225 Difference]: With dead ends: 277 [2018-11-23 05:43:11,135 INFO L226 Difference]: Without dead ends: 274 [2018-11-23 05:43:11,135 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2018-11-23 05:43:11,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-11-23 05:43:11,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-11-23 05:43:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-11-23 05:43:11,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 383 transitions. [2018-11-23 05:43:11,145 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 383 transitions. Word has length 112 [2018-11-23 05:43:11,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:11,145 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 383 transitions. [2018-11-23 05:43:11,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-23 05:43:11,145 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 383 transitions. [2018-11-23 05:43:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-23 05:43:11,146 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:11,146 INFO L402 BasicCegarLoop]: trace histogram [12, 11, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:11,146 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:11,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:11,146 INFO L82 PathProgramCache]: Analyzing trace with hash -495672722, now seen corresponding path program 2 times [2018-11-23 05:43:11,147 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:43:11,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:43:11,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:11,147 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:43:11,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 22 proven. 248 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 05:43:11,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:11,378 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:43:11,389 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 05:43:11,477 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 05:43:11,477 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:43:11,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 22 proven. 248 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 05:43:11,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:11,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-23 05:43:11,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 05:43:11,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 05:43:11,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-23 05:43:11,545 INFO L87 Difference]: Start difference. First operand 274 states and 383 transitions. Second operand 9 states. [2018-11-23 05:43:11,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:11,662 INFO L93 Difference]: Finished difference Result 298 states and 414 transitions. [2018-11-23 05:43:11,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 05:43:11,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2018-11-23 05:43:11,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:11,665 INFO L225 Difference]: With dead ends: 298 [2018-11-23 05:43:11,665 INFO L226 Difference]: Without dead ends: 295 [2018-11-23 05:43:11,665 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-23 05:43:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-11-23 05:43:11,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 292. [2018-11-23 05:43:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-11-23 05:43:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 408 transitions. [2018-11-23 05:43:11,676 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 408 transitions. Word has length 121 [2018-11-23 05:43:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:11,677 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 408 transitions. [2018-11-23 05:43:11,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 05:43:11,677 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 408 transitions. [2018-11-23 05:43:11,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-23 05:43:11,678 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:11,678 INFO L402 BasicCegarLoop]: trace histogram [12, 11, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:11,678 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:11,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:11,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2006984672, now seen corresponding path program 2 times [2018-11-23 05:43:11,682 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:43:11,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:43:11,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:11,683 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:43:11,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:14,239 WARN L180 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 159 DAG size of output: 37 [2018-11-23 05:43:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 22 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:14,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:14,263 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:43:14,269 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 05:43:14,337 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 05:43:14,337 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:43:14,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 22 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:14,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:14,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-11-23 05:43:14,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 05:43:14,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 05:43:14,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-11-23 05:43:14,474 INFO L87 Difference]: Start difference. First operand 292 states and 408 transitions. Second operand 15 states. [2018-11-23 05:43:14,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:14,678 INFO L93 Difference]: Finished difference Result 295 states and 411 transitions. [2018-11-23 05:43:14,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 05:43:14,679 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 124 [2018-11-23 05:43:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:14,680 INFO L225 Difference]: With dead ends: 295 [2018-11-23 05:43:14,680 INFO L226 Difference]: Without dead ends: 293 [2018-11-23 05:43:14,680 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-11-23 05:43:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-11-23 05:43:14,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-11-23 05:43:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-11-23 05:43:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 409 transitions. [2018-11-23 05:43:14,686 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 409 transitions. Word has length 124 [2018-11-23 05:43:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:14,686 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 409 transitions. [2018-11-23 05:43:14,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 05:43:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 409 transitions. [2018-11-23 05:43:14,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-23 05:43:14,688 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:14,688 INFO L402 BasicCegarLoop]: trace histogram [13, 12, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:14,688 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:14,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:14,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1858751879, now seen corresponding path program 2 times [2018-11-23 05:43:14,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:43:14,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:43:14,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:14,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:43:14,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 24 proven. 318 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 05:43:14,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:14,837 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/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 05:43:14,856 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 05:43:14,934 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 05:43:14,935 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:43:14,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 24 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:15,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:15,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 21 [2018-11-23 05:43:15,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-23 05:43:15,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-23 05:43:15,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2018-11-23 05:43:15,102 INFO L87 Difference]: Start difference. First operand 293 states and 409 transitions. Second operand 21 states. [2018-11-23 05:43:15,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:15,335 INFO L93 Difference]: Finished difference Result 336 states and 469 transitions. [2018-11-23 05:43:15,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 05:43:15,335 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 135 [2018-11-23 05:43:15,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:15,336 INFO L225 Difference]: With dead ends: 336 [2018-11-23 05:43:15,336 INFO L226 Difference]: Without dead ends: 332 [2018-11-23 05:43:15,336 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2018-11-23 05:43:15,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-11-23 05:43:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 329. [2018-11-23 05:43:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-11-23 05:43:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 460 transitions. [2018-11-23 05:43:15,345 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 460 transitions. Word has length 135 [2018-11-23 05:43:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:15,345 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 460 transitions. [2018-11-23 05:43:15,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-23 05:43:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 460 transitions. [2018-11-23 05:43:15,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-23 05:43:15,347 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 05:43:15,347 INFO L402 BasicCegarLoop]: trace histogram [14, 13, 9, 9, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 05:43:15,347 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 05:43:15,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 05:43:15,347 INFO L82 PathProgramCache]: Analyzing trace with hash 624796254, now seen corresponding path program 3 times [2018-11-23 05:43:15,347 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 05:43:15,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 05:43:15,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:15,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 05:43:15,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 05:43:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 05:43:16,283 WARN L180 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 39 [2018-11-23 05:43:16,536 WARN L180 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 36 [2018-11-23 05:43:16,570 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 26 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 05:43:16,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 05:43:16,571 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 05:43:16,577 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 05:43:16,632 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 05:43:16,632 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 05:43:16,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 05:43:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 208 proven. 26 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-11-23 05:43:16,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 05:43:16,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7] total 23 [2018-11-23 05:43:16,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-23 05:43:16,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-23 05:43:16,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2018-11-23 05:43:16,921 INFO L87 Difference]: Start difference. First operand 329 states and 460 transitions. Second operand 23 states. [2018-11-23 05:43:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 05:43:17,708 INFO L93 Difference]: Finished difference Result 349 states and 481 transitions. [2018-11-23 05:43:17,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-23 05:43:17,708 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 145 [2018-11-23 05:43:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 05:43:17,708 INFO L225 Difference]: With dead ends: 349 [2018-11-23 05:43:17,708 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 05:43:17,709 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=197, Invalid=2059, Unknown=0, NotChecked=0, Total=2256 [2018-11-23 05:43:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 05:43:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 05:43:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 05:43:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 05:43:17,710 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 145 [2018-11-23 05:43:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 05:43:17,710 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 05:43:17,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-23 05:43:17,710 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 05:43:17,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 05:43:17,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 05:43:17,734 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 05:43:17,765 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 05:43:17,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 05:43:17,767 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 05:43:17,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 05:43:17,771 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 05:43:17,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 05:43:17,777 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 05:43:17,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 05:43:17,788 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 05:43:17,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 05:43:18,058 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 44 [2018-11-23 05:43:18,060 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 05:43:18,060 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-23 05:43:18,060 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:43:18,060 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 05:43:18,060 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 05:43:18,060 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 05:43:18,060 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 05:43:18,060 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 566) no Hoare annotation was computed. [2018-11-23 05:43:18,060 INFO L448 ceAbstractionStarter]: For program point L498(lines 498 500) no Hoare annotation was computed. [2018-11-23 05:43:18,060 INFO L448 ceAbstractionStarter]: For program point L366(lines 366 368) no Hoare annotation was computed. [2018-11-23 05:43:18,060 INFO L448 ceAbstractionStarter]: For program point L466(lines 466 468) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 565) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 566) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L39(lines 39 58) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L40(lines 40 55) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L140(lines 140 155) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L240(lines 240 255) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L108(lines 108 123) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 53) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L340(lines 340 355) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L208(lines 208 223) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L142(lines 142 153) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L76(lines 76 91) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L440(lines 440 455) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L308(lines 308 323) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L242(lines 242 253) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L176(lines 176 191) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L110(lines 110 121) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L540(lines 540 555) no Hoare annotation was computed. [2018-11-23 05:43:18,061 INFO L448 ceAbstractionStarter]: For program point L408(lines 408 423) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L342(lines 342 353) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L276(lines 276 291) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L210(lines 210 221) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L78(lines 78 89) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L508(lines 508 523) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L442(lines 442 453) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L376(lines 376 391) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L310(lines 310 321) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L178(lines 178 189) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 48) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L542(lines 542 553) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L476(lines 476 491) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L410(lines 410 421) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L278(lines 278 289) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L146(lines 146 148) no Hoare annotation was computed. [2018-11-23 05:43:18,062 INFO L448 ceAbstractionStarter]: For program point L510(lines 510 521) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L378(lines 378 389) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L246(lines 246 248) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L114(lines 114 116) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L478(lines 478 489) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L346(lines 346 348) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L214(lines 214 216) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L82(lines 82 84) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L446(lines 446 448) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L314(lines 314 316) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L182(lines 182 184) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L546(lines 546 548) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L414(lines 414 416) no Hoare annotation was computed. [2018-11-23 05:43:18,063 INFO L448 ceAbstractionStarter]: For program point L282(lines 282 284) no Hoare annotation was computed. [2018-11-23 05:43:18,064 INFO L444 ceAbstractionStarter]: At program point L547(lines 14 566) the Hoare annotation is: false [2018-11-23 05:43:18,064 INFO L448 ceAbstractionStarter]: For program point L514(lines 514 516) no Hoare annotation was computed. [2018-11-23 05:43:18,064 INFO L448 ceAbstractionStarter]: For program point L382(lines 382 384) no Hoare annotation was computed. [2018-11-23 05:43:18,064 INFO L448 ceAbstractionStarter]: For program point L482(lines 482 484) no Hoare annotation was computed. [2018-11-23 05:43:18,064 INFO L444 ceAbstractionStarter]: At program point L24-2(lines 24 561) the Hoare annotation is: (let ((.cse0 (<= main_~this_buffer_empty~0 0)) (.cse1 (<= 0 main_~this_buffer_empty~0))) (or (and (<= main_~this_expect~0 0) (<= 0 main_~this_expect~0) (= main_~q~0 0) .cse0 .cse1) (and (exists ((main_~P1~0 Int)) (let ((.cse2 (mod main_~P1~0 2))) (and (= .cse2 0) (= .cse2 (mod main_~this_expect~0 2))))) (<= 5 main_~q~0) (<= 0 (+ main_~P8~0 2147483648)) (<= main_~P8~0 2147483647) .cse0 .cse1))) [2018-11-23 05:43:18,064 INFO L448 ceAbstractionStarter]: For program point L24-3(lines 24 561) no Hoare annotation was computed. [2018-11-23 05:43:18,064 INFO L448 ceAbstractionStarter]: For program point L124(lines 124 139) no Hoare annotation was computed. [2018-11-23 05:43:18,064 INFO L448 ceAbstractionStarter]: For program point L224(lines 224 239) no Hoare annotation was computed. [2018-11-23 05:43:18,064 INFO L448 ceAbstractionStarter]: For program point L92(lines 92 107) no Hoare annotation was computed. [2018-11-23 05:43:18,064 INFO L448 ceAbstractionStarter]: For program point L59(lines 59 158) no Hoare annotation was computed. [2018-11-23 05:43:18,064 INFO L448 ceAbstractionStarter]: For program point L324(lines 324 339) no Hoare annotation was computed. [2018-11-23 05:43:18,064 INFO L448 ceAbstractionStarter]: For program point L192(lines 192 207) no Hoare annotation was computed. [2018-11-23 05:43:18,065 INFO L448 ceAbstractionStarter]: For program point L159(lines 159 258) no Hoare annotation was computed. [2018-11-23 05:43:18,065 INFO L448 ceAbstractionStarter]: For program point L126(lines 126 137) no Hoare annotation was computed. [2018-11-23 05:43:18,065 INFO L448 ceAbstractionStarter]: For program point L60(lines 60 75) no Hoare annotation was computed. [2018-11-23 05:43:18,065 INFO L448 ceAbstractionStarter]: For program point L424(lines 424 439) no Hoare annotation was computed. [2018-11-23 05:43:18,065 INFO L448 ceAbstractionStarter]: For program point L292(lines 292 307) no Hoare annotation was computed. [2018-11-23 05:43:18,065 INFO L448 ceAbstractionStarter]: For program point L259(lines 259 358) no Hoare annotation was computed. [2018-11-23 05:43:18,065 INFO L448 ceAbstractionStarter]: For program point L226(lines 226 237) no Hoare annotation was computed. [2018-11-23 05:43:18,065 INFO L448 ceAbstractionStarter]: For program point L160(lines 160 175) no Hoare annotation was computed. [2018-11-23 05:43:18,065 INFO L448 ceAbstractionStarter]: For program point L94(lines 94 105) no Hoare annotation was computed. [2018-11-23 05:43:18,065 INFO L444 ceAbstractionStarter]: At program point L557(lines 24 561) the Hoare annotation is: (let ((.cse0 (exists ((main_~P1~0 Int)) (let ((.cse9 (mod main_~P1~0 2))) (and (= .cse9 0) (= .cse9 (mod (+ main_~this_expect~0 1) 2)))))) (.cse6 (<= main_~this_buffer_empty~0 1)) (.cse7 (<= 1 main_~this_buffer_empty~0)) (.cse5 (exists ((main_~P1~0 Int)) (let ((.cse8 (mod main_~P1~0 2))) (and (= .cse8 0) (= .cse8 (mod main_~this_expect~0 2)))))) (.cse1 (<= 0 (+ main_~P8~0 2147483648))) (.cse2 (<= main_~P8~0 2147483647)) (.cse3 (<= main_~this_buffer_empty~0 0)) (.cse4 (<= 0 main_~this_buffer_empty~0))) (or (and .cse0 .cse1 (= main_~q~0 3) .cse2 .cse3 .cse4) (and .cse5 (= main_~q~0 1) .cse6 .cse1 .cse7 .cse2) (and .cse0 .cse6 .cse1 (= main_~q~0 4) .cse7 .cse2) (and .cse5 (<= 5 main_~q~0) .cse1 .cse2 .cse3 .cse4) (and (<= main_~this_expect~0 0) (= main_~q~0 0) (<= 0 main_~this_expect~0) .cse3 .cse4))) [2018-11-23 05:43:18,065 INFO L448 ceAbstractionStarter]: For program point L524(lines 524 539) no Hoare annotation was computed. [2018-11-23 05:43:18,065 INFO L448 ceAbstractionStarter]: For program point L392(lines 392 407) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L359(lines 359 458) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L326(lines 326 337) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L260(lines 260 275) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L194(lines 194 205) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L62(lines 62 73) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L492(lines 492 507) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L459(lines 459 558) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L426(lines 426 437) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L360(lines 360 375) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L294(lines 294 305) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L162(lines 162 173) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 566) the Hoare annotation is: true [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L526(lines 526 537) no Hoare annotation was computed. [2018-11-23 05:43:18,066 INFO L448 ceAbstractionStarter]: For program point L460(lines 460 475) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L394(lines 394 405) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L262(lines 262 273) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L130(lines 130 132) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L494(lines 494 505) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L362(lines 362 373) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L230(lines 230 232) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L98(lines 98 100) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L462(lines 462 473) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L330(lines 330 332) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L198(lines 198 200) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L66(lines 66 68) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L430(lines 430 432) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L298(lines 298 300) no Hoare annotation was computed. [2018-11-23 05:43:18,067 INFO L448 ceAbstractionStarter]: For program point L166(lines 166 168) no Hoare annotation was computed. [2018-11-23 05:43:18,068 INFO L448 ceAbstractionStarter]: For program point L530(lines 530 532) no Hoare annotation was computed. [2018-11-23 05:43:18,068 INFO L448 ceAbstractionStarter]: For program point L398(lines 398 400) no Hoare annotation was computed. [2018-11-23 05:43:18,068 INFO L448 ceAbstractionStarter]: For program point L266(lines 266 268) no Hoare annotation was computed. [2018-11-23 05:43:18,073 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,074 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,088 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,088 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,089 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,089 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,090 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,090 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,090 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,090 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,090 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,090 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,091 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,091 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,092 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,092 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,092 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,092 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,092 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,092 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:43:18 BoogieIcfgContainer [2018-11-23 05:43:18,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 05:43:18,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 05:43:18,103 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 05:43:18,103 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 05:43:18,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:42:53" (3/4) ... [2018-11-23 05:43:18,107 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 05:43:18,112 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 05:43:18,113 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 05:43:18,119 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-23 05:43:18,119 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 05:43:18,138 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((this_expect <= 0 && 0 <= this_expect) && q == 0) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) || ((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == this_expect % 2) && 5 <= q) && 0 <= P8 + 2147483648) && P8 <= 2147483647) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) [2018-11-23 05:43:18,144 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_01f2090c-6b43-489b-892c-56ed370d1c58/bin-2019/uautomizer/witness.graphml [2018-11-23 05:43:18,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 05:43:18,145 INFO L168 Benchmark]: Toolchain (without parser) took 25364.08 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 293.6 MB). Free memory was 959.3 MB in the beginning and 1.2 GB in the end (delta: -288.5 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:18,146 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 05:43:18,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.18 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 935.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:18,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 935.1 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:18,147 INFO L168 Benchmark]: Boogie Preprocessor took 38.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:18,147 INFO L168 Benchmark]: RCFGBuilder took 625.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:18,147 INFO L168 Benchmark]: TraceAbstraction took 24291.17 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 181.4 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -209.4 MB). Peak memory consumption was 412.7 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:18,147 INFO L168 Benchmark]: Witness Printer took 41.63 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. [2018-11-23 05:43:18,149 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.18 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 935.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 68.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 935.1 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 625.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24291.17 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 181.4 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -209.4 MB). Peak memory consumption was 412.7 MB. Max. memory is 11.5 GB. * Witness Printer took 41.63 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 565]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant [2018-11-23 05:43:18,153 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,153 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,154 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,154 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] Derived loop invariant: ((((this_expect <= 0 && 0 <= this_expect) && q == 0) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) || ((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == this_expect % 2) && 5 <= q) && 0 <= P8 + 2147483648) && P8 <= 2147483647) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) - InvariantResult [Line: 24]: Loop Invariant [2018-11-23 05:43:18,159 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,159 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,159 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,159 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,159 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,159 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,160 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,160 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,160 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,160 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,161 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,161 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,161 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,161 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,161 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-23 05:43:18,161 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] Derived loop invariant: (((((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == (this_expect + 1) % 2) && 0 <= P8 + 2147483648) && q == 3) && P8 <= 2147483647) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) || ((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == this_expect % 2) && q == 1) && this_buffer_empty <= 1) && 0 <= P8 + 2147483648) && 1 <= this_buffer_empty) && P8 <= 2147483647)) || ((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == (this_expect + 1) % 2) && this_buffer_empty <= 1) && 0 <= P8 + 2147483648) && q == 4) && 1 <= this_buffer_empty) && P8 <= 2147483647)) || ((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == this_expect % 2) && 5 <= q) && 0 <= P8 + 2147483648) && P8 <= 2147483647) && this_buffer_empty <= 0) && 0 <= this_buffer_empty)) || ((((this_expect <= 0 && q == 0) && 0 <= this_expect) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 114 locations, 1 error locations. SAFE Result, 24.2s OverallTime, 25 OverallIterations, 14 TraceHistogramMax, 3.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 4868 SDtfs, 3639 SDslu, 26546 SDs, 0 SdLazy, 3565 SolverSat, 197 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1536 GetRequests, 1303 SyntacticMatches, 27 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=329occurred in iteration=24, 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, 25 MinimizatonAttempts, 98 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 49 NumberOfFragments, 203 HoareAnnotationTreeSize, 7 FomulaSimplifications, 3029 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 783 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 17.0s InterpolantComputationTime, 2852 NumberOfCodeBlocks, 2768 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 2811 ConstructedInterpolants, 42 QuantifiedInterpolants, 2653149 SizeOfPredicates, 58 NumberOfNonLiveVariables, 8173 ConjunctsInSsa, 452 ConjunctsInUnsatCore, 41 InterpolantComputations, 10 PerfectInterpolantSequences, 1038/4848 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...