./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/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 7e40a98558d0111ea95f3ee60a44cc14c7768182 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:00:13,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:13,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:13,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:13,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:13,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:13,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:13,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:13,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:13,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:13,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:13,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:13,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:13,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:13,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:13,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:13,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:13,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:13,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:13,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:13,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:13,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:13,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:13,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:13,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:13,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:13,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:13,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:13,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:13,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:13,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:13,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:13,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:13,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:13,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:13,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:13,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:13,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:13,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:13,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:13,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:13,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:00:13,299 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:13,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:13,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:13,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:13,309 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:13,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:13,310 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:00:13,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:13,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:00:13,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:13,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:00:13,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:00:13,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:00:13,311 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:00:13,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:13,311 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:13,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:00:13,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:13,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:13,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:00:13,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:00:13,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:00:13,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:13,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:00:13,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:00:13,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:13,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:00:13,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:00:13,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_bb007564-f05b-4b70-8d93-41715407875d/bin/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 -> 7e40a98558d0111ea95f3ee60a44cc14c7768182 [2019-10-22 09:00:13,345 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:13,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:13,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:13,361 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:13,362 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:13,362 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci02.c [2019-10-22 09:00:13,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/data/78fb403b5/3c9536e86a8c46429f1e821de700256a/FLAG0dde89365 [2019-10-22 09:00:13,824 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:13,825 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/sv-benchmarks/c/recursive/Fibonacci02.c [2019-10-22 09:00:13,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/data/78fb403b5/3c9536e86a8c46429f1e821de700256a/FLAG0dde89365 [2019-10-22 09:00:13,844 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/data/78fb403b5/3c9536e86a8c46429f1e821de700256a [2019-10-22 09:00:13,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:13,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:13,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:13,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:13,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:13,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:13" (1/1) ... [2019-10-22 09:00:13,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4389b93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:13, skipping insertion in model container [2019-10-22 09:00:13,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:13" (1/1) ... [2019-10-22 09:00:13,860 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:13,872 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:14,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:14,013 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:14,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:14,097 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:14,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14 WrapperNode [2019-10-22 09:00:14,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:14,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:14,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:14,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:14,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14" (1/1) ... [2019-10-22 09:00:14,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14" (1/1) ... [2019-10-22 09:00:14,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:14,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:14,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:14,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:14,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14" (1/1) ... [2019-10-22 09:00:14,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14" (1/1) ... [2019-10-22 09:00:14,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14" (1/1) ... [2019-10-22 09:00:14,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14" (1/1) ... [2019-10-22 09:00:14,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14" (1/1) ... [2019-10-22 09:00:14,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14" (1/1) ... [2019-10-22 09:00:14,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14" (1/1) ... [2019-10-22 09:00:14,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:14,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:14,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:14,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:14,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/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 [2019-10-22 09:00:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2019-10-22 09:00:14,208 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2019-10-22 09:00:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:14,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:14,334 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:14,334 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 09:00:14,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:14 BoogieIcfgContainer [2019-10-22 09:00:14,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:14,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:00:14,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:00:14,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:00:14,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:00:13" (1/3) ... [2019-10-22 09:00:14,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db483b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:14, skipping insertion in model container [2019-10-22 09:00:14,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:14" (2/3) ... [2019-10-22 09:00:14,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db483b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:14, skipping insertion in model container [2019-10-22 09:00:14,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:14" (3/3) ... [2019-10-22 09:00:14,342 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2019-10-22 09:00:14,350 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:00:14,356 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:00:14,365 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:00:14,386 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:00:14,386 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:00:14,386 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:00:14,386 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:14,386 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:14,386 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:00:14,386 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:14,387 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:00:14,401 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-22 09:00:14,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 09:00:14,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:14,406 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:14,407 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:14,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:14,412 INFO L82 PathProgramCache]: Analyzing trace with hash 238562696, now seen corresponding path program 1 times [2019-10-22 09:00:14,419 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:14,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371594319] [2019-10-22 09:00:14,420 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:14,420 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:14,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:14,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371594319] [2019-10-22 09:00:14,564 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:14,564 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:14,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092509460] [2019-10-22 09:00:14,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:14,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:14,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:14,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:14,584 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2019-10-22 09:00:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:14,682 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-10-22 09:00:14,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:00:14,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-22 09:00:14,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:14,692 INFO L225 Difference]: With dead ends: 27 [2019-10-22 09:00:14,693 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 09:00:14,695 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:14,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 09:00:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 09:00:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 09:00:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-10-22 09:00:14,771 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2019-10-22 09:00:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:14,771 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-10-22 09:00:14,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-10-22 09:00:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:00:14,773 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:14,773 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:14,773 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:14,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:14,773 INFO L82 PathProgramCache]: Analyzing trace with hash -497654578, now seen corresponding path program 1 times [2019-10-22 09:00:14,774 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:14,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620885772] [2019-10-22 09:00:14,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:14,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:14,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:14,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620885772] [2019-10-22 09:00:14,831 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:14,831 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:14,831 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484473082] [2019-10-22 09:00:14,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:14,832 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:14,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:14,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:14,833 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2019-10-22 09:00:14,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:14,884 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-10-22 09:00:14,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:00:14,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-22 09:00:14,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:14,886 INFO L225 Difference]: With dead ends: 23 [2019-10-22 09:00:14,886 INFO L226 Difference]: Without dead ends: 19 [2019-10-22 09:00:14,887 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-22 09:00:14,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2019-10-22 09:00:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 09:00:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-10-22 09:00:14,892 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-10-22 09:00:14,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:14,893 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-10-22 09:00:14,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-10-22 09:00:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 09:00:14,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:14,894 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:14,895 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:14,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:14,895 INFO L82 PathProgramCache]: Analyzing trace with hash -850570499, now seen corresponding path program 1 times [2019-10-22 09:00:14,895 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:14,895 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611212551] [2019-10-22 09:00:14,896 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:14,896 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:14,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 09:00:14,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611212551] [2019-10-22 09:00:14,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451247050] [2019-10-22 09:00:14,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:00:15,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 09:00:15,109 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:15,109 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-10-22 09:00:15,109 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765900220] [2019-10-22 09:00:15,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:00:15,110 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:15,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:00:15,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:15,110 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 8 states. [2019-10-22 09:00:15,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:15,195 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2019-10-22 09:00:15,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:15,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-10-22 09:00:15,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:15,197 INFO L225 Difference]: With dead ends: 41 [2019-10-22 09:00:15,197 INFO L226 Difference]: Without dead ends: 26 [2019-10-22 09:00:15,197 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:15,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-22 09:00:15,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-10-22 09:00:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-22 09:00:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2019-10-22 09:00:15,204 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 22 [2019-10-22 09:00:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:15,205 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-10-22 09:00:15,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:00:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2019-10-22 09:00:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 09:00:15,206 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:15,206 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:15,407 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:15,407 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:15,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1834230885, now seen corresponding path program 1 times [2019-10-22 09:00:15,408 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:15,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034745012] [2019-10-22 09:00:15,408 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:15,408 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:15,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 09:00:15,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034745012] [2019-10-22 09:00:15,511 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963420087] [2019-10-22 09:00:15,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:00:15,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 09:00:15,565 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:15,565 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-10-22 09:00:15,565 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496045645] [2019-10-22 09:00:15,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:00:15,566 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:15,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:00:15,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:15,566 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand 8 states. [2019-10-22 09:00:15,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:15,666 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2019-10-22 09:00:15,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:15,667 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-10-22 09:00:15,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:15,669 INFO L225 Difference]: With dead ends: 47 [2019-10-22 09:00:15,669 INFO L226 Difference]: Without dead ends: 43 [2019-10-22 09:00:15,669 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:15,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-22 09:00:15,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-10-22 09:00:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 09:00:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2019-10-22 09:00:15,680 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 58 transitions. Word has length 23 [2019-10-22 09:00:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:15,680 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 58 transitions. [2019-10-22 09:00:15,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:00:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 58 transitions. [2019-10-22 09:00:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 09:00:15,682 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:15,682 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:15,882 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:15,883 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:15,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1177823382, now seen corresponding path program 2 times [2019-10-22 09:00:15,883 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:15,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189522815] [2019-10-22 09:00:15,884 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:15,884 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:15,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-22 09:00:15,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189522815] [2019-10-22 09:00:15,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124297991] [2019-10-22 09:00:15,980 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:16,028 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:00:16,029 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:16,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:00:16,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-22 09:00:16,076 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:16,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-10-22 09:00:16,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536675237] [2019-10-22 09:00:16,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 09:00:16,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:16,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 09:00:16,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:00:16,077 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand 10 states. [2019-10-22 09:00:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:16,211 INFO L93 Difference]: Finished difference Result 67 states and 101 transitions. [2019-10-22 09:00:16,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:00:16,212 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2019-10-22 09:00:16,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:16,213 INFO L225 Difference]: With dead ends: 67 [2019-10-22 09:00:16,213 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 09:00:16,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:00:16,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 09:00:16,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-10-22 09:00:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 09:00:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-10-22 09:00:16,223 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 35 [2019-10-22 09:00:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:16,224 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-10-22 09:00:16,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 09:00:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-10-22 09:00:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 09:00:16,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:16,225 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:16,426 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:16,427 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:16,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:16,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2146852816, now seen corresponding path program 2 times [2019-10-22 09:00:16,428 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:16,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9495545] [2019-10-22 09:00:16,428 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:16,428 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:16,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-22 09:00:16,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9495545] [2019-10-22 09:00:16,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880648829] [2019-10-22 09:00:16,603 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:16,644 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:00:16,644 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:16,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:00:16,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-22 09:00:16,668 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:16,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2019-10-22 09:00:16,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335979259] [2019-10-22 09:00:16,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 09:00:16,669 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:16,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 09:00:16,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:00:16,669 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 10 states. [2019-10-22 09:00:16,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:16,786 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2019-10-22 09:00:16,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:00:16,787 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-10-22 09:00:16,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:16,789 INFO L225 Difference]: With dead ends: 52 [2019-10-22 09:00:16,789 INFO L226 Difference]: Without dead ends: 48 [2019-10-22 09:00:16,789 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:00:16,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-22 09:00:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2019-10-22 09:00:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-22 09:00:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2019-10-22 09:00:16,802 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 37 [2019-10-22 09:00:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:16,802 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2019-10-22 09:00:16,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 09:00:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2019-10-22 09:00:16,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-22 09:00:16,810 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:16,810 INFO L380 BasicCegarLoop]: trace histogram [13, 13, 8, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:17,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:17,011 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:17,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:17,011 INFO L82 PathProgramCache]: Analyzing trace with hash -344833624, now seen corresponding path program 3 times [2019-10-22 09:00:17,012 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:17,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790933245] [2019-10-22 09:00:17,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:17,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:17,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 73 proven. 128 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2019-10-22 09:00:17,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790933245] [2019-10-22 09:00:17,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040680932] [2019-10-22 09:00:17,317 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:17,358 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-10-22 09:00:17,358 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:17,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:00:17,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 207 proven. 12 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2019-10-22 09:00:17,408 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:17,408 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2019-10-22 09:00:17,409 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682181671] [2019-10-22 09:00:17,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 09:00:17,409 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:17,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 09:00:17,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-10-22 09:00:17,410 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand 14 states. [2019-10-22 09:00:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:17,573 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2019-10-22 09:00:17,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 09:00:17,573 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2019-10-22 09:00:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:17,574 INFO L225 Difference]: With dead ends: 94 [2019-10-22 09:00:17,575 INFO L226 Difference]: Without dead ends: 54 [2019-10-22 09:00:17,575 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2019-10-22 09:00:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-22 09:00:17,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2019-10-22 09:00:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 09:00:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2019-10-22 09:00:17,584 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 89 [2019-10-22 09:00:17,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:17,584 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2019-10-22 09:00:17,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 09:00:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2019-10-22 09:00:17,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-22 09:00:17,586 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:17,586 INFO L380 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:17,786 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:17,787 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:17,788 INFO L82 PathProgramCache]: Analyzing trace with hash -181993491, now seen corresponding path program 4 times [2019-10-22 09:00:17,788 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:17,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295309338] [2019-10-22 09:00:17,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:17,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:17,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 57 proven. 117 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-10-22 09:00:18,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295309338] [2019-10-22 09:00:18,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426122122] [2019-10-22 09:00:18,001 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:18,039 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 09:00:18,039 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:18,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 09:00:18,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-10-22 09:00:18,087 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:18,087 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 17 [2019-10-22 09:00:18,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555735040] [2019-10-22 09:00:18,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-22 09:00:18,090 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:18,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-22 09:00:18,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2019-10-22 09:00:18,090 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand 17 states. [2019-10-22 09:00:18,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:18,319 INFO L93 Difference]: Finished difference Result 93 states and 137 transitions. [2019-10-22 09:00:18,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 09:00:18,320 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 78 [2019-10-22 09:00:18,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:18,322 INFO L225 Difference]: With dead ends: 93 [2019-10-22 09:00:18,322 INFO L226 Difference]: Without dead ends: 53 [2019-10-22 09:00:18,323 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2019-10-22 09:00:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-22 09:00:18,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2019-10-22 09:00:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 09:00:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2019-10-22 09:00:18,338 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 78 [2019-10-22 09:00:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:18,338 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2019-10-22 09:00:18,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-22 09:00:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2019-10-22 09:00:18,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-22 09:00:18,343 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:18,343 INFO L380 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:18,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:18,544 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:18,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1483723059, now seen corresponding path program 5 times [2019-10-22 09:00:18,544 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:18,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386920124] [2019-10-22 09:00:18,544 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2019-10-22 09:00:18,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386920124] [2019-10-22 09:00:18,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089784478] [2019-10-22 09:00:18,759 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:18,816 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-10-22 09:00:18,817 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:18,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 09:00:18,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2019-10-22 09:00:18,857 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:18,857 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 14 [2019-10-22 09:00:18,857 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383440153] [2019-10-22 09:00:18,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 09:00:18,858 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:18,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 09:00:18,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2019-10-22 09:00:18,858 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand 14 states. [2019-10-22 09:00:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:19,012 INFO L93 Difference]: Finished difference Result 120 states and 175 transitions. [2019-10-22 09:00:19,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 09:00:19,014 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2019-10-22 09:00:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:19,016 INFO L225 Difference]: With dead ends: 120 [2019-10-22 09:00:19,016 INFO L226 Difference]: Without dead ends: 116 [2019-10-22 09:00:19,017 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:00:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-10-22 09:00:19,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2019-10-22 09:00:19,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 09:00:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 157 transitions. [2019-10-22 09:00:19,042 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 157 transitions. Word has length 105 [2019-10-22 09:00:19,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:19,044 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 157 transitions. [2019-10-22 09:00:19,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 09:00:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 157 transitions. [2019-10-22 09:00:19,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-22 09:00:19,047 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:19,047 INFO L380 BasicCegarLoop]: trace histogram [29, 29, 23, 14, 14, 14, 14, 14, 14, 14, 9, 6, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:19,248 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:19,248 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:19,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:19,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1461695804, now seen corresponding path program 6 times [2019-10-22 09:00:19,249 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:19,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988752277] [2019-10-22 09:00:19,249 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:19,249 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:19,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 536 proven. 645 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2019-10-22 09:00:19,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988752277] [2019-10-22 09:00:19,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417078525] [2019-10-22 09:00:19,762 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:19,841 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2019-10-22 09:00:19,841 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:19,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 09:00:19,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 236 proven. 396 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2019-10-22 09:00:19,921 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:19,922 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 26 [2019-10-22 09:00:19,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574734841] [2019-10-22 09:00:19,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-22 09:00:19,923 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:19,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-22 09:00:19,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2019-10-22 09:00:19,923 INFO L87 Difference]: Start difference. First operand 107 states and 157 transitions. Second operand 26 states. [2019-10-22 09:00:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:20,355 INFO L93 Difference]: Finished difference Result 195 states and 340 transitions. [2019-10-22 09:00:20,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-22 09:00:20,356 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 200 [2019-10-22 09:00:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:20,357 INFO L225 Difference]: With dead ends: 195 [2019-10-22 09:00:20,358 INFO L226 Difference]: Without dead ends: 97 [2019-10-22 09:00:20,359 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2019-10-22 09:00:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-10-22 09:00:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 76. [2019-10-22 09:00:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-10-22 09:00:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 101 transitions. [2019-10-22 09:00:20,371 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 101 transitions. Word has length 200 [2019-10-22 09:00:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:20,371 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 101 transitions. [2019-10-22 09:00:20,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-22 09:00:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 101 transitions. [2019-10-22 09:00:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-10-22 09:00:20,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:20,375 INFO L380 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:20,575 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:20,576 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:20,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:20,576 INFO L82 PathProgramCache]: Analyzing trace with hash 675718022, now seen corresponding path program 7 times [2019-10-22 09:00:20,576 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:20,576 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78245832] [2019-10-22 09:00:20,576 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:20,576 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:20,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 189 proven. 1130 refuted. 0 times theorem prover too weak. 3249 trivial. 0 not checked. [2019-10-22 09:00:21,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78245832] [2019-10-22 09:00:21,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391033732] [2019-10-22 09:00:21,149 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-22 09:00:21,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 189 proven. 1130 refuted. 0 times theorem prover too weak. 3249 trivial. 0 not checked. [2019-10-22 09:00:21,348 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:21,349 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 18 [2019-10-22 09:00:21,349 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364182610] [2019-10-22 09:00:21,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-22 09:00:21,349 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:21,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-22 09:00:21,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2019-10-22 09:00:21,350 INFO L87 Difference]: Start difference. First operand 76 states and 101 transitions. Second operand 18 states. [2019-10-22 09:00:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:21,524 INFO L93 Difference]: Finished difference Result 252 states and 367 transitions. [2019-10-22 09:00:21,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 09:00:21,527 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 282 [2019-10-22 09:00:21,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:21,530 INFO L225 Difference]: With dead ends: 252 [2019-10-22 09:00:21,530 INFO L226 Difference]: Without dead ends: 248 [2019-10-22 09:00:21,530 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2019-10-22 09:00:21,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2019-10-22 09:00:21,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 233. [2019-10-22 09:00:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-10-22 09:00:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 336 transitions. [2019-10-22 09:00:21,557 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 336 transitions. Word has length 282 [2019-10-22 09:00:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:21,557 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 336 transitions. [2019-10-22 09:00:21,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-22 09:00:21,557 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 336 transitions. [2019-10-22 09:00:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2019-10-22 09:00:21,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:21,564 INFO L380 BasicCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 21, 13, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:21,765 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:21,765 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:21,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:21,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1653353793, now seen corresponding path program 8 times [2019-10-22 09:00:21,766 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:21,766 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884768554] [2019-10-22 09:00:21,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:21,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:21,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2019-10-22 09:00:22,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884768554] [2019-10-22 09:00:22,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182220937] [2019-10-22 09:00:22,799 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:22,914 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:00:22,915 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:22,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-22 09:00:22,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2019-10-22 09:00:23,065 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:23,065 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 20 [2019-10-22 09:00:23,065 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582924497] [2019-10-22 09:00:23,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-22 09:00:23,068 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:23,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-22 09:00:23,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2019-10-22 09:00:23,071 INFO L87 Difference]: Start difference. First operand 233 states and 336 transitions. Second operand 20 states. [2019-10-22 09:00:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:23,296 INFO L93 Difference]: Finished difference Result 651 states and 999 transitions. [2019-10-22 09:00:23,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 09:00:23,296 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 459 [2019-10-22 09:00:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:23,304 INFO L225 Difference]: With dead ends: 651 [2019-10-22 09:00:23,304 INFO L226 Difference]: Without dead ends: 647 [2019-10-22 09:00:23,305 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2019-10-22 09:00:23,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2019-10-22 09:00:23,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 629. [2019-10-22 09:00:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-22 09:00:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 962 transitions. [2019-10-22 09:00:23,393 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 962 transitions. Word has length 459 [2019-10-22 09:00:23,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:23,395 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 962 transitions. [2019-10-22 09:00:23,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-22 09:00:23,396 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 962 transitions. [2019-10-22 09:00:23,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2019-10-22 09:00:23,416 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:23,416 INFO L380 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:23,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:23,617 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:23,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:23,617 INFO L82 PathProgramCache]: Analyzing trace with hash -2028492684, now seen corresponding path program 9 times [2019-10-22 09:00:23,617 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:23,617 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076513359] [2019-10-22 09:00:23,617 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:23,617 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:23,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-10-22 09:00:26,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076513359] [2019-10-22 09:00:26,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183169687] [2019-10-22 09:00:26,905 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:27,278 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2019-10-22 09:00:27,278 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:27,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 439 conjunts are in the unsatisfiable core [2019-10-22 09:00:27,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-10-22 09:00:29,359 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:29,360 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2019-10-22 09:00:29,360 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175988490] [2019-10-22 09:00:29,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-10-22 09:00:29,361 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:29,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-10-22 09:00:29,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2019-10-22 09:00:29,362 INFO L87 Difference]: Start difference. First operand 629 states and 962 transitions. Second operand 36 states. [2019-10-22 09:00:30,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:30,131 INFO L93 Difference]: Finished difference Result 1164 states and 2187 transitions. [2019-10-22 09:00:30,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-10-22 09:00:30,139 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 745 [2019-10-22 09:00:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:30,154 INFO L225 Difference]: With dead ends: 1164 [2019-10-22 09:00:30,155 INFO L226 Difference]: Without dead ends: 1160 [2019-10-22 09:00:30,156 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1185 GetRequests, 1094 SyntacticMatches, 55 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=93, Invalid=1313, Unknown=0, NotChecked=0, Total=1406 [2019-10-22 09:00:30,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2019-10-22 09:00:30,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 644. [2019-10-22 09:00:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-10-22 09:00:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1005 transitions. [2019-10-22 09:00:30,220 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1005 transitions. Word has length 745 [2019-10-22 09:00:30,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:30,221 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 1005 transitions. [2019-10-22 09:00:30,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-10-22 09:00:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1005 transitions. [2019-10-22 09:00:30,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2019-10-22 09:00:30,227 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:30,228 INFO L380 BasicCegarLoop]: trace histogram [129, 129, 104, 64, 64, 64, 64, 64, 64, 64, 40, 25, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:30,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:30,428 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:30,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2133481866, now seen corresponding path program 10 times [2019-10-22 09:00:30,429 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:30,429 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224992646] [2019-10-22 09:00:30,429 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:30,429 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:30,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 46444 backedges. 6231 proven. 7318 refuted. 0 times theorem prover too weak. 32895 trivial. 0 not checked. [2019-10-22 09:00:33,450 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224992646] [2019-10-22 09:00:33,450 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484384472] [2019-10-22 09:00:33,450 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:33,643 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 09:00:33,643 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:00:33,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-22 09:00:33,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 46444 backedges. 1061 proven. 5210 refuted. 0 times theorem prover too weak. 40173 trivial. 0 not checked. [2019-10-22 09:00:34,099 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:00:34,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 14] total 32 [2019-10-22 09:00:34,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61579352] [2019-10-22 09:00:34,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-10-22 09:00:34,101 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:34,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-10-22 09:00:34,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2019-10-22 09:00:34,103 INFO L87 Difference]: Start difference. First operand 644 states and 1005 transitions. Second operand 32 states. [2019-10-22 09:00:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:34,707 INFO L93 Difference]: Finished difference Result 1944 states and 4131 transitions. [2019-10-22 09:00:34,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-10-22 09:00:34,707 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 881 [2019-10-22 09:00:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:34,709 INFO L225 Difference]: With dead ends: 1944 [2019-10-22 09:00:34,710 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:00:34,725 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1198 GetRequests, 1155 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=400, Invalid=1492, Unknown=0, NotChecked=0, Total=1892 [2019-10-22 09:00:34,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:00:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:00:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:00:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:00:34,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 881 [2019-10-22 09:00:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:34,728 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:34,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-10-22 09:00:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:00:34,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:00:34,928 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:00:34,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:00:36,761 WARN L191 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 6 [2019-10-22 09:00:38,163 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 339 DAG size of output: 61 [2019-10-22 09:00:38,174 INFO L443 ceAbstractionStarter]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2019-10-22 09:00:38,174 INFO L446 ceAbstractionStarter]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2019-10-22 09:00:38,174 INFO L439 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (< 1 fibonacci_~n) (= fibonacci_~n |fibonacci_#in~n|)) [2019-10-22 09:00:38,174 INFO L443 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-10-22 09:00:38,175 INFO L439 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (<= 8 |fibonacci_#in~n|)) (.cse4 (= fibonacci_~n |fibonacci_#in~n|))) (let ((.cse1 (and (<= |fibonacci_#t~ret0| 21) (<= 21 |fibonacci_#t~ret0|) (<= 9 |fibonacci_#in~n|) .cse4)) (.cse2 (and (<= 13 |fibonacci_#t~ret0|) (<= fibonacci_~n 8) .cse0 .cse4 (<= |fibonacci_#t~ret0| 13))) (.cse3 (and .cse4 (<= 10 |fibonacci_#in~n|)))) (and (or (not .cse0) .cse1 .cse2 .cse3) (< 1 fibonacci_~n) (or (not (<= |fibonacci_#in~n| 3)) (and (<= |fibonacci_#t~ret0| 1) (<= 1 |fibonacci_#t~ret0|) .cse4)) (or (and (<= fibonacci_~n 6) (<= 5 |fibonacci_#t~ret0|) (<= |fibonacci_#t~ret0| 5) (<= 6 fibonacci_~n) .cse4) (and (<= |fibonacci_#t~ret0| 8) (<= 8 |fibonacci_#t~ret0|) (<= 7 fibonacci_~n) .cse4) (and (<= 3 |fibonacci_#t~ret0|) .cse4 (<= |fibonacci_#t~ret0| 3) (<= fibonacci_~n 5)) .cse1 .cse2 (not (<= 5 |fibonacci_#in~n|)) .cse3) (or (not (<= |fibonacci_#in~n| 4)) (and (<= |fibonacci_#t~ret0| 2) .cse4 (<= 2 |fibonacci_#t~ret0|)) (not (<= 4 |fibonacci_#in~n|)))))) [2019-10-22 09:00:38,175 INFO L443 ceAbstractionStarter]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2019-10-22 09:00:38,175 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-10-22 09:00:38,175 INFO L443 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-10-22 09:00:38,175 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2019-10-22 09:00:38,175 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:00:38,175 INFO L443 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2019-10-22 09:00:38,175 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:00:38,175 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:00:38,175 INFO L443 ceAbstractionStarter]: For program point L28(lines 28 32) no Hoare annotation was computed. [2019-10-22 09:00:38,175 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 9) (<= 9 ULTIMATE.start_main_~x~0)) [2019-10-22 09:00:38,176 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-10-22 09:00:38,176 INFO L439 ceAbstractionStarter]: At program point L25(lines 25 33) the Hoare annotation is: (<= 9 ULTIMATE.start_main_~x~0) [2019-10-22 09:00:38,176 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 31) no Hoare annotation was computed. [2019-10-22 09:00:38,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:00:38 BoogieIcfgContainer [2019-10-22 09:00:38,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:00:38,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:38,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:38,187 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:38,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:14" (3/4) ... [2019-10-22 09:00:38,191 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:00:38,197 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2019-10-22 09:00:38,201 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 09:00:38,201 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 09:00:38,238 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bb007564-f05b-4b70-8d93-41715407875d/bin/uautomizer/witness.graphml [2019-10-22 09:00:38,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:38,239 INFO L168 Benchmark]: Toolchain (without parser) took 24392.17 ms. Allocated memory was 1.0 GB in the beginning and 2.5 GB in the end (delta: 1.5 GB). Free memory was 947.2 MB in the beginning and 1.5 GB in the end (delta: -589.2 MB). Peak memory consumption was 930.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:38,239 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:38,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 947.2 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:38,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:38,240 INFO L168 Benchmark]: Boogie Preprocessor took 17.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:38,241 INFO L168 Benchmark]: RCFGBuilder took 189.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:38,241 INFO L168 Benchmark]: TraceAbstraction took 23850.00 ms. Allocated memory was 1.2 GB in the beginning and 2.5 GB in the end (delta: 1.4 GB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -426.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 11.5 GB. [2019-10-22 09:00:38,241 INFO L168 Benchmark]: Witness Printer took 51.59 ms. Allocated memory is still 2.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:38,244 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 947.2 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 189.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 23850.00 ms. Allocated memory was 1.2 GB in the beginning and 2.5 GB in the end (delta: 1.4 GB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -426.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 11.5 GB. * Witness Printer took 51.59 ms. Allocated memory is still 2.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 31]: 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: 25]: Loop Invariant Derived loop invariant: 9 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 23.7s, OverallIterations: 14, TraceHistogramMax: 129, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, HoareTripleCheckerStatistics: 305 SDtfs, 762 SDslu, 2020 SDs, 0 SdLazy, 3430 SolverSat, 809 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4260 GetRequests, 3958 SyntacticMatches, 56 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=644occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 607 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 1406 PreInvPairs, 2638 NumberOfFragments, 180 HoareAnnotationTreeSize, 1406 FomulaSimplifications, 47712 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 5 FomulaSimplificationsInter, 24180 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 5931 NumberOfCodeBlocks, 5709 NumberOfCodeBlocksAsserted, 155 NumberOfCheckSat, 5905 ConstructedInterpolants, 0 QuantifiedInterpolants, 8043929 SizeOfPredicates, 63 NumberOfNonLiveVariables, 5988 ConjunctsInSsa, 564 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 157124/200244 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...