./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/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:32,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:40:32,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:40:32,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:40:32,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:40:32,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:40:32,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:40:32,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:40:32,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:40:32,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:40:32,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:40:32,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:40:32,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:40:32,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:40:32,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:40:32,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:40:32,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:40:32,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:40:32,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:40:32,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:40:32,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:40:32,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:40:32,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:40:32,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:40:32,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:40:32,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:40:32,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:40:32,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:40:32,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:40:32,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:40:32,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:40:32,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:40:32,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:40:32,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:40:32,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:40:32,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:40:32,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:40:32,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:40:32,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:40:32,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:40:32,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:40:32,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:40:32,468 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:40:32,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:40:32,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:40:32,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:40:32,470 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:40:32,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:40:32,471 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:40:32,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:40:32,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:40:32,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:40:32,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:40:32,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:40:32,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:40:32,472 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:40:32,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:40:32,472 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:40:32,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:40:32,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:40:32,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:40:32,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:40:32,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:40:32,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:40:32,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:40:32,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:40:32,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:40:32,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:40:32,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:40:32,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:40:32,475 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/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:32,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:40:32,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:40:32,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:40:32,524 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:40:32,525 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:40:32,525 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci02.c [2019-11-15 22:40:32,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/data/9ee55db19/036457536a8a4c5aa3af457cae3a0714/FLAG25639f367 [2019-11-15 22:40:32,976 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:40:32,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/sv-benchmarks/c/recursive/Fibonacci02.c [2019-11-15 22:40:32,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/data/9ee55db19/036457536a8a4c5aa3af457cae3a0714/FLAG25639f367 [2019-11-15 22:40:33,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/data/9ee55db19/036457536a8a4c5aa3af457cae3a0714 [2019-11-15 22:40:33,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:40:33,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:40:33,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:40:33,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:40:33,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:40:33,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:40:33" (1/1) ... [2019-11-15 22:40:33,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668f3393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33, skipping insertion in model container [2019-11-15 22:40:33,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:40:33" (1/1) ... [2019-11-15 22:40:33,404 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:40:33,422 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:40:33,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:40:33,625 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:40:33,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:40:33,721 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:40:33,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33 WrapperNode [2019-11-15 22:40:33,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:40:33,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:40:33,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:40:33,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:40:33,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33" (1/1) ... [2019-11-15 22:40:33,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33" (1/1) ... [2019-11-15 22:40:33,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:40:33,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:40:33,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:40:33,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:40:33,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33" (1/1) ... [2019-11-15 22:40:33,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33" (1/1) ... [2019-11-15 22:40:33,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33" (1/1) ... [2019-11-15 22:40:33,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33" (1/1) ... [2019-11-15 22:40:33,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33" (1/1) ... [2019-11-15 22:40:33,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33" (1/1) ... [2019-11-15 22:40:33,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33" (1/1) ... [2019-11-15 22:40:33,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:40:33,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:40:33,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:40:33,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:40:33,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:33,818 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2019-11-15 22:40:33,819 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2019-11-15 22:40:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:40:33,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:40:33,971 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:40:33,971 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 22:40:33,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:40:33 BoogieIcfgContainer [2019-11-15 22:40:33,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:40:33,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:40:33,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:40:33,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:40:33,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:40:33" (1/3) ... [2019-11-15 22:40:33,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19668318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:40:33, skipping insertion in model container [2019-11-15 22:40:33,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:33" (2/3) ... [2019-11-15 22:40:33,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19668318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:40:33, skipping insertion in model container [2019-11-15 22:40:33,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:40:33" (3/3) ... [2019-11-15 22:40:33,983 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2019-11-15 22:40:33,993 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:40:34,013 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:40:34,025 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:40:34,061 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:40:34,061 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:40:34,061 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:40:34,061 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:40:34,063 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:40:34,063 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:40:34,063 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:40:34,064 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:40:34,080 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-15 22:40:34,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 22:40:34,092 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:34,092 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:34,094 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:34,101 INFO L82 PathProgramCache]: Analyzing trace with hash 238562696, now seen corresponding path program 1 times [2019-11-15 22:40:34,130 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:34,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313328342] [2019-11-15 22:40:34,131 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,131 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:34,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313328342] [2019-11-15 22:40:34,285 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:34,285 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:40:34,285 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591287537] [2019-11-15 22:40:34,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:40:34,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:34,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:40:34,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:40:34,301 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2019-11-15 22:40:34,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:34,405 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-11-15 22:40:34,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:40:34,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-15 22:40:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:34,416 INFO L225 Difference]: With dead ends: 27 [2019-11-15 22:40:34,416 INFO L226 Difference]: Without dead ends: 17 [2019-11-15 22:40:34,419 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 [2019-11-15 22:40:34,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-15 22:40:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-15 22:40:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-15 22:40:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-15 22:40:34,453 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2019-11-15 22:40:34,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:34,454 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-15 22:40:34,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:40:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-15 22:40:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 22:40:34,456 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:34,456 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:34,456 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:34,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:34,457 INFO L82 PathProgramCache]: Analyzing trace with hash -497654578, now seen corresponding path program 1 times [2019-11-15 22:40:34,457 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:34,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031360622] [2019-11-15 22:40:34,457 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,457 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:34,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031360622] [2019-11-15 22:40:34,518 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:34,518 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:40:34,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700150760] [2019-11-15 22:40:34,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:40:34,520 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:34,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:40:34,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:40:34,520 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2019-11-15 22:40:34,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:34,591 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-11-15 22:40:34,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:40:34,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-15 22:40:34,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:34,593 INFO L225 Difference]: With dead ends: 23 [2019-11-15 22:40:34,593 INFO L226 Difference]: Without dead ends: 19 [2019-11-15 22:40:34,594 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 [2019-11-15 22:40:34,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-15 22:40:34,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2019-11-15 22:40:34,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-15 22:40:34,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-15 22:40:34,603 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-11-15 22:40:34,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:34,603 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-15 22:40:34,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:40:34,603 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-15 22:40:34,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 22:40:34,605 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:34,606 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:34,606 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:34,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:34,606 INFO L82 PathProgramCache]: Analyzing trace with hash -850570499, now seen corresponding path program 1 times [2019-11-15 22:40:34,606 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:34,607 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419854987] [2019-11-15 22:40:34,607 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,607 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 22:40:34,734 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419854987] [2019-11-15 22:40:34,734 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897424887] [2019-11-15 22:40:34,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:34,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:40:34,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 22:40:34,849 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:40:34,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-15 22:40:34,850 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589927956] [2019-11-15 22:40:34,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:40:34,851 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:34,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:40:34,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:40:34,854 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 8 states. [2019-11-15 22:40:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:34,971 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2019-11-15 22:40:34,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:40:34,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-15 22:40:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:34,973 INFO L225 Difference]: With dead ends: 41 [2019-11-15 22:40:34,973 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 22:40:34,974 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 [2019-11-15 22:40:34,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 22:40:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-15 22:40:34,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-15 22:40:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2019-11-15 22:40:34,990 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 22 [2019-11-15 22:40:34,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:34,991 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-11-15 22:40:34,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:40:34,991 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2019-11-15 22:40:34,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 22:40:34,994 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:34,995 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:35,199 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:40:35,207 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:35,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:35,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1834230885, now seen corresponding path program 1 times [2019-11-15 22:40:35,207 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:35,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411787078] [2019-11-15 22:40:35,208 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:35,208 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:35,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-15 22:40:35,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411787078] [2019-11-15 22:40:35,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421439267] [2019-11-15 22:40:35,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:40:35,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-15 22:40:35,385 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:40:35,386 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-15 22:40:35,386 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208949430] [2019-11-15 22:40:35,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:40:35,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:35,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:40:35,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:40:35,387 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand 8 states. [2019-11-15 22:40:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:35,488 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2019-11-15 22:40:35,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:40:35,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-11-15 22:40:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:35,491 INFO L225 Difference]: With dead ends: 47 [2019-11-15 22:40:35,491 INFO L226 Difference]: Without dead ends: 43 [2019-11-15 22:40:35,492 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 [2019-11-15 22:40:35,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-15 22:40:35,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-15 22:40:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-15 22:40:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2019-11-15 22:40:35,504 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 58 transitions. Word has length 23 [2019-11-15 22:40:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:35,505 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 58 transitions. [2019-11-15 22:40:35,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:40:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 58 transitions. [2019-11-15 22:40:35,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 22:40:35,507 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:35,507 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:35,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:40:35,711 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:35,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1177823382, now seen corresponding path program 2 times [2019-11-15 22:40:35,711 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:35,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047599695] [2019-11-15 22:40:35,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:35,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:35,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-15 22:40:35,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047599695] [2019-11-15 22:40:35,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375271477] [2019-11-15 22:40:35,870 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:35,907 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 22:40:35,907 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:40:35,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 22:40:35,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-15 22:40:35,958 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:40:35,958 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-11-15 22:40:35,958 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253965169] [2019-11-15 22:40:35,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 22:40:35,959 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:35,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 22:40:35,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:40:35,960 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand 10 states. [2019-11-15 22:40:36,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:36,120 INFO L93 Difference]: Finished difference Result 67 states and 101 transitions. [2019-11-15 22:40:36,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 22:40:36,122 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2019-11-15 22:40:36,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:36,123 INFO L225 Difference]: With dead ends: 67 [2019-11-15 22:40:36,123 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 22:40:36,125 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 [2019-11-15 22:40:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 22:40:36,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-15 22:40:36,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 22:40:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-15 22:40:36,137 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 35 [2019-11-15 22:40:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:36,138 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-15 22:40:36,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 22:40:36,138 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-15 22:40:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 22:40:36,142 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:36,142 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:36,346 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:40:36,347 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:36,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:36,347 INFO L82 PathProgramCache]: Analyzing trace with hash 2146852816, now seen corresponding path program 2 times [2019-11-15 22:40:36,347 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:36,355 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939235309] [2019-11-15 22:40:36,355 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:36,355 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:36,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-15 22:40:36,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939235309] [2019-11-15 22:40:36,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029028970] [2019-11-15 22:40:36,529 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:36,576 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 22:40:36,577 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:40:36,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 22:40:36,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-15 22:40:36,606 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:40:36,606 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2019-11-15 22:40:36,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737601409] [2019-11-15 22:40:36,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 22:40:36,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:36,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 22:40:36,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:40:36,608 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 10 states. [2019-11-15 22:40:36,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:36,755 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2019-11-15 22:40:36,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:40:36,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-11-15 22:40:36,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:36,759 INFO L225 Difference]: With dead ends: 52 [2019-11-15 22:40:36,759 INFO L226 Difference]: Without dead ends: 48 [2019-11-15 22:40:36,759 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:40:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-15 22:40:36,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2019-11-15 22:40:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-15 22:40:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2019-11-15 22:40:36,770 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 37 [2019-11-15 22:40:36,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:36,770 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2019-11-15 22:40:36,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 22:40:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2019-11-15 22:40:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-15 22:40:36,776 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:36,776 INFO L380 BasicCegarLoop]: trace histogram [13, 13, 8, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:36,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:40:36,978 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:36,978 INFO L82 PathProgramCache]: Analyzing trace with hash -344833624, now seen corresponding path program 3 times [2019-11-15 22:40:36,978 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:36,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594125220] [2019-11-15 22:40:36,979 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:36,979 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:36,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:37,310 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 73 proven. 128 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2019-11-15 22:40:37,310 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594125220] [2019-11-15 22:40:37,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902405507] [2019-11-15 22:40:37,311 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:37,368 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-11-15 22:40:37,368 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:40:37,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 22:40:37,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 207 proven. 12 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2019-11-15 22:40:37,450 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:40:37,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2019-11-15 22:40:37,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994142467] [2019-11-15 22:40:37,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 22:40:37,453 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:37,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 22:40:37,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-11-15 22:40:37,453 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand 14 states. [2019-11-15 22:40:37,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:37,734 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2019-11-15 22:40:37,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 22:40:37,735 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2019-11-15 22:40:37,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:37,736 INFO L225 Difference]: With dead ends: 94 [2019-11-15 22:40:37,736 INFO L226 Difference]: Without dead ends: 54 [2019-11-15 22:40:37,738 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2019-11-15 22:40:37,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-15 22:40:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2019-11-15 22:40:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-15 22:40:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2019-11-15 22:40:37,748 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 89 [2019-11-15 22:40:37,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:37,749 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2019-11-15 22:40:37,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 22:40:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2019-11-15 22:40:37,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-15 22:40:37,751 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:37,751 INFO L380 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:37,964 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:40:37,964 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash -181993491, now seen corresponding path program 4 times [2019-11-15 22:40:37,965 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:37,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172364379] [2019-11-15 22:40:37,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:37,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:37,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 57 proven. 117 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-11-15 22:40:38,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172364379] [2019-11-15 22:40:38,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26283039] [2019-11-15 22:40:38,267 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:38,329 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 22:40:38,330 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:40:38,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 22:40:38,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-15 22:40:38,432 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:40:38,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 17 [2019-11-15 22:40:38,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557582651] [2019-11-15 22:40:38,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-15 22:40:38,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:38,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-15 22:40:38,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2019-11-15 22:40:38,438 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand 17 states. [2019-11-15 22:40:38,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:38,754 INFO L93 Difference]: Finished difference Result 93 states and 137 transitions. [2019-11-15 22:40:38,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-15 22:40:38,755 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 78 [2019-11-15 22:40:38,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:38,757 INFO L225 Difference]: With dead ends: 93 [2019-11-15 22:40:38,757 INFO L226 Difference]: Without dead ends: 53 [2019-11-15 22:40:38,759 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2019-11-15 22:40:38,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-15 22:40:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2019-11-15 22:40:38,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-15 22:40:38,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2019-11-15 22:40:38,779 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 78 [2019-11-15 22:40:38,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:38,780 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2019-11-15 22:40:38,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-15 22:40:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2019-11-15 22:40:38,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-15 22:40:38,787 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:38,788 INFO L380 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:38,990 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:40:38,991 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:38,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:38,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2037341067, now seen corresponding path program 5 times [2019-11-15 22:40:38,991 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:38,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529190816] [2019-11-15 22:40:38,991 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:38,992 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:38,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 166 proven. 339 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2019-11-15 22:40:39,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529190816] [2019-11-15 22:40:39,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115422900] [2019-11-15 22:40:39,529 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:39,611 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2019-11-15 22:40:39,611 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:40:39,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-15 22:40:39,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 187 proven. 336 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2019-11-15 22:40:39,781 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:40:39,782 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 23 [2019-11-15 22:40:39,782 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479570594] [2019-11-15 22:40:39,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-15 22:40:39,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:39,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-15 22:40:39,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2019-11-15 22:40:39,786 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand 23 states. [2019-11-15 22:40:40,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:40,317 INFO L93 Difference]: Finished difference Result 111 states and 175 transitions. [2019-11-15 22:40:40,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-15 22:40:40,318 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 132 [2019-11-15 22:40:40,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:40,320 INFO L225 Difference]: With dead ends: 111 [2019-11-15 22:40:40,320 INFO L226 Difference]: Without dead ends: 70 [2019-11-15 22:40:40,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=282, Invalid=908, Unknown=0, NotChecked=0, Total=1190 [2019-11-15 22:40:40,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-15 22:40:40,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2019-11-15 22:40:40,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-15 22:40:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2019-11-15 22:40:40,335 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 132 [2019-11-15 22:40:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:40,335 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2019-11-15 22:40:40,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-15 22:40:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2019-11-15 22:40:40,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-15 22:40:40,339 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:40,339 INFO L380 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:40,542 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:40:40,543 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:40,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:40,543 INFO L82 PathProgramCache]: Analyzing trace with hash 418459252, now seen corresponding path program 6 times [2019-11-15 22:40:40,543 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:40,543 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053535238] [2019-11-15 22:40:40,543 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:40,544 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:40,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2019-11-15 22:40:40,945 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053535238] [2019-11-15 22:40:40,945 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946998301] [2019-11-15 22:40:40,945 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:41,043 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-11-15 22:40:41,043 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:40:41,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 22:40:41,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 202 proven. 241 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2019-11-15 22:40:41,093 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:40:41,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 16 [2019-11-15 22:40:41,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406217691] [2019-11-15 22:40:41,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 22:40:41,096 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:41,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 22:40:41,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2019-11-15 22:40:41,097 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand 16 states. [2019-11-15 22:40:41,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:41,316 INFO L93 Difference]: Finished difference Result 182 states and 262 transitions. [2019-11-15 22:40:41,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 22:40:41,317 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 173 [2019-11-15 22:40:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:41,320 INFO L225 Difference]: With dead ends: 182 [2019-11-15 22:40:41,320 INFO L226 Difference]: Without dead ends: 178 [2019-11-15 22:40:41,321 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2019-11-15 22:40:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-11-15 22:40:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 166. [2019-11-15 22:40:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-11-15 22:40:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 239 transitions. [2019-11-15 22:40:41,346 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 239 transitions. Word has length 173 [2019-11-15 22:40:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:41,346 INFO L462 AbstractCegarLoop]: Abstraction has 166 states and 239 transitions. [2019-11-15 22:40:41,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 22:40:41,347 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 239 transitions. [2019-11-15 22:40:41,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2019-11-15 22:40:41,353 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:41,353 INFO L380 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:41,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:40:41,557 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:41,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:41,557 INFO L82 PathProgramCache]: Analyzing trace with hash -53992125, now seen corresponding path program 7 times [2019-11-15 22:40:41,557 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:41,557 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698190283] [2019-11-15 22:40:41,557 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:41,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:41,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1318 proven. 1439 refuted. 0 times theorem prover too weak. 3282 trivial. 0 not checked. [2019-11-15 22:40:42,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698190283] [2019-11-15 22:40:42,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590227379] [2019-11-15 22:40:42,768 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:42,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-15 22:40:42,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 204 proven. 1348 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2019-11-15 22:40:43,032 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:40:43,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 29 [2019-11-15 22:40:43,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406013650] [2019-11-15 22:40:43,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-15 22:40:43,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:43,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-15 22:40:43,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2019-11-15 22:40:43,036 INFO L87 Difference]: Start difference. First operand 166 states and 239 transitions. Second operand 29 states. [2019-11-15 22:40:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:43,825 INFO L93 Difference]: Finished difference Result 283 states and 500 transitions. [2019-11-15 22:40:43,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-11-15 22:40:43,826 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 323 [2019-11-15 22:40:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:43,828 INFO L225 Difference]: With dead ends: 283 [2019-11-15 22:40:43,829 INFO L226 Difference]: Without dead ends: 127 [2019-11-15 22:40:43,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=482, Invalid=1774, Unknown=0, NotChecked=0, Total=2256 [2019-11-15 22:40:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-11-15 22:40:43,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 106. [2019-11-15 22:40:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-15 22:40:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 153 transitions. [2019-11-15 22:40:43,847 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 153 transitions. Word has length 323 [2019-11-15 22:40:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:43,848 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 153 transitions. [2019-11-15 22:40:43,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-15 22:40:43,848 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 153 transitions. [2019-11-15 22:40:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2019-11-15 22:40:43,868 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:43,869 INFO L380 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:44,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:40:44,080 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:44,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:44,081 INFO L82 PathProgramCache]: Analyzing trace with hash -485542170, now seen corresponding path program 8 times [2019-11-15 22:40:44,081 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:44,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919669540] [2019-11-15 22:40:44,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:44,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:44,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 4057 proven. 6090 refuted. 0 times theorem prover too weak. 22949 trivial. 0 not checked. [2019-11-15 22:40:47,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919669540] [2019-11-15 22:40:47,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317442113] [2019-11-15 22:40:47,299 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:47,525 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 22:40:47,525 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:40:47,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-15 22:40:47,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 466 proven. 4033 refuted. 0 times theorem prover too weak. 28597 trivial. 0 not checked. [2019-11-15 22:40:47,923 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:40:47,923 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 12] total 37 [2019-11-15 22:40:47,927 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632473792] [2019-11-15 22:40:47,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-11-15 22:40:47,930 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:47,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-11-15 22:40:47,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2019-11-15 22:40:47,931 INFO L87 Difference]: Start difference. First operand 106 states and 153 transitions. Second operand 37 states. [2019-11-15 22:40:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:48,860 INFO L93 Difference]: Finished difference Result 236 states and 417 transitions. [2019-11-15 22:40:48,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-15 22:40:48,861 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 745 [2019-11-15 22:40:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:48,864 INFO L225 Difference]: With dead ends: 236 [2019-11-15 22:40:48,864 INFO L226 Difference]: Without dead ends: 140 [2019-11-15 22:40:48,867 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1017 GetRequests, 968 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=521, Invalid=2029, Unknown=0, NotChecked=0, Total=2550 [2019-11-15 22:40:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-11-15 22:40:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2019-11-15 22:40:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-15 22:40:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 160 transitions. [2019-11-15 22:40:48,888 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 160 transitions. Word has length 745 [2019-11-15 22:40:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:48,890 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 160 transitions. [2019-11-15 22:40:48,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-11-15 22:40:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 160 transitions. [2019-11-15 22:40:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2019-11-15 22:40:48,918 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:48,919 INFO L380 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:49,122 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:40:49,124 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:49,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:49,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2028492684, now seen corresponding path program 9 times [2019-11-15 22:40:49,124 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:49,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76717925] [2019-11-15 22:40:49,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:49,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:49,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-11-15 22:40:53,412 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76717925] [2019-11-15 22:40:53,412 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734798606] [2019-11-15 22:40:53,412 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:40:53,891 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2019-11-15 22:40:53,892 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:40:53,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 439 conjunts are in the unsatisfiable core [2019-11-15 22:40:53,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-11-15 22:40:56,532 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:40:56,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2019-11-15 22:40:56,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657515772] [2019-11-15 22:40:56,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-15 22:40:56,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:56,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-15 22:40:56,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2019-11-15 22:40:56,536 INFO L87 Difference]: Start difference. First operand 110 states and 160 transitions. Second operand 36 states. [2019-11-15 22:40:57,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:57,110 INFO L93 Difference]: Finished difference Result 120 states and 182 transitions. [2019-11-15 22:40:57,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-15 22:40:57,111 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 745 [2019-11-15 22:40:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:57,114 INFO L225 Difference]: With dead ends: 120 [2019-11-15 22:40:57,115 INFO L226 Difference]: Without dead ends: 116 [2019-11-15 22:40:57,115 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1183 GetRequests, 1094 SyntacticMatches, 55 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2019-11-15 22:40:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-15 22:40:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2019-11-15 22:40:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-11-15 22:40:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 177 transitions. [2019-11-15 22:40:57,127 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 177 transitions. Word has length 745 [2019-11-15 22:40:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:57,128 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 177 transitions. [2019-11-15 22:40:57,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-15 22:40:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 177 transitions. [2019-11-15 22:40:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2019-11-15 22:40:57,136 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:57,136 INFO L380 BasicCegarLoop]: trace histogram [135, 135, 109, 67, 67, 67, 67, 67, 67, 67, 42, 26, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:57,341 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:40:57,341 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:57,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:57,342 INFO L82 PathProgramCache]: Analyzing trace with hash -703398773, now seen corresponding path program 10 times [2019-11-15 22:40:57,342 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:57,342 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110656516] [2019-11-15 22:40:57,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:57,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:57,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 3587 proven. 7095 refuted. 0 times theorem prover too weak. 40228 trivial. 0 not checked. [2019-11-15 22:41:01,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110656516] [2019-11-15 22:41:01,143 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901236162] [2019-11-15 22:41:01,143 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/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 [2019-11-15 22:41:01,359 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 22:41:01,360 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:41:01,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-15 22:41:01,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:41:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 3596 proven. 2302 refuted. 0 times theorem prover too weak. 45012 trivial. 0 not checked. [2019-11-15 22:41:01,984 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:41:01,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 38 [2019-11-15 22:41:01,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806896466] [2019-11-15 22:41:01,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-15 22:41:01,987 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:01,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-15 22:41:01,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1125, Unknown=0, NotChecked=0, Total=1406 [2019-11-15 22:41:01,988 INFO L87 Difference]: Start difference. First operand 115 states and 177 transitions. Second operand 38 states. [2019-11-15 22:41:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:03,015 INFO L93 Difference]: Finished difference Result 294 states and 566 transitions. [2019-11-15 22:41:03,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-11-15 22:41:03,015 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 922 [2019-11-15 22:41:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:03,019 INFO L225 Difference]: With dead ends: 294 [2019-11-15 22:41:03,019 INFO L226 Difference]: Without dead ends: 157 [2019-11-15 22:41:03,023 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 1188 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=790, Invalid=3370, Unknown=0, NotChecked=0, Total=4160 [2019-11-15 22:41:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-11-15 22:41:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 131. [2019-11-15 22:41:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-15 22:41:03,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 178 transitions. [2019-11-15 22:41:03,036 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 178 transitions. Word has length 922 [2019-11-15 22:41:03,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:03,036 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 178 transitions. [2019-11-15 22:41:03,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-15 22:41:03,037 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 178 transitions. [2019-11-15 22:41:03,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2019-11-15 22:41:03,046 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:03,047 INFO L380 BasicCegarLoop]: trace histogram [151, 151, 122, 75, 75, 75, 75, 75, 75, 75, 47, 29, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:03,251 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:41:03,251 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:41:03,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:03,251 INFO L82 PathProgramCache]: Analyzing trace with hash -832003161, now seen corresponding path program 11 times [2019-11-15 22:41:03,251 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:41:03,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242010350] [2019-11-15 22:41:03,252 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:03,252 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:03,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:41:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 5267 proven. 7093 refuted. 0 times theorem prover too weak. 51421 trivial. 0 not checked. [2019-11-15 22:41:07,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242010350] [2019-11-15 22:41:07,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457613910] [2019-11-15 22:41:07,419 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:41:08,083 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2019-11-15 22:41:08,084 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:41:08,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 2203 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-15 22:41:08,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:41:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 7697 proven. 4310 refuted. 0 times theorem prover too weak. 51774 trivial. 0 not checked. [2019-11-15 22:41:08,669 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:41:08,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 20] total 40 [2019-11-15 22:41:08,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240728322] [2019-11-15 22:41:08,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-15 22:41:08,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:08,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-15 22:41:08,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2019-11-15 22:41:08,672 INFO L87 Difference]: Start difference. First operand 131 states and 178 transitions. Second operand 40 states. [2019-11-15 22:41:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:09,381 INFO L93 Difference]: Finished difference Result 263 states and 361 transitions. [2019-11-15 22:41:09,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-15 22:41:09,383 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 1031 [2019-11-15 22:41:09,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:09,385 INFO L225 Difference]: With dead ends: 263 [2019-11-15 22:41:09,385 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:41:09,387 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1379 GetRequests, 1328 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=549, Invalid=2207, Unknown=0, NotChecked=0, Total=2756 [2019-11-15 22:41:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:41:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:41:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:41:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:41:09,388 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1031 [2019-11-15 22:41:09,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:09,388 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:41:09,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-15 22:41:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:41:09,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:41:09,597 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:41:09,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 22:41:10,144 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 6 [2019-11-15 22:41:10,979 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 58 [2019-11-15 22:41:10,985 INFO L443 ceAbstractionStarter]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2019-11-15 22:41:10,985 INFO L446 ceAbstractionStarter]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2019-11-15 22:41:10,986 INFO L439 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (< 1 fibonacci_~n) (= fibonacci_~n |fibonacci_#in~n|)) [2019-11-15 22:41:10,986 INFO L443 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-15 22:41:10,986 INFO L439 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (let ((.cse1 (and (<= 13 |fibonacci_#t~ret0|) (<= fibonacci_~n 8) (<= 8 fibonacci_~n) .cse0 (<= |fibonacci_#t~ret0| 13)))) (and (or (and .cse0 (<= 10 |fibonacci_#in~n|)) (and (<= |fibonacci_#t~ret0| 21) (<= 21 |fibonacci_#t~ret0|) .cse0) .cse1 (<= fibonacci_~n 7)) (let ((.cse2 (<= |fibonacci_#t~ret0| 1)) (.cse3 (<= 1 |fibonacci_#t~ret0|))) (or (and (<= 4 fibonacci_~n) (<= |fibonacci_#t~ret0| 2) .cse0 (<= fibonacci_~n 4) (<= 2 |fibonacci_#t~ret0|)) (and (<= fibonacci_~n 6) (<= 5 |fibonacci_#t~ret0|) (<= |fibonacci_#t~ret0| 5) (<= 6 fibonacci_~n) .cse0) (and (<= 3 |fibonacci_#t~ret0|) .cse0 (<= |fibonacci_#t~ret0| 3) (<= fibonacci_~n 5) (<= 5 fibonacci_~n)) .cse1 (and .cse2 .cse3 (<= fibonacci_~n 3) (<= 3 fibonacci_~n) .cse0) (and .cse2 (< 1 fibonacci_~n) .cse3 (<= |fibonacci_#in~n| 2) .cse0) (<= 9 fibonacci_~n) (and (<= |fibonacci_#t~ret0| 8) (<= 8 |fibonacci_#t~ret0|) (<= 7 fibonacci_~n) .cse0)))))) [2019-11-15 22:41:10,986 INFO L443 ceAbstractionStarter]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2019-11-15 22:41:10,986 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-11-15 22:41:10,986 INFO L443 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-11-15 22:41:10,986 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2019-11-15 22:41:10,986 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 22:41:10,986 INFO L443 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2019-11-15 22:41:10,986 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 22:41:10,986 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 22:41:10,986 INFO L443 ceAbstractionStarter]: For program point L28(lines 28 32) no Hoare annotation was computed. [2019-11-15 22:41:10,987 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)) [2019-11-15 22:41:10,987 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 31) no Hoare annotation was computed. [2019-11-15 22:41:10,987 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-11-15 22:41:10,987 INFO L439 ceAbstractionStarter]: At program point L25(lines 25 33) the Hoare annotation is: (<= 9 ULTIMATE.start_main_~x~0) [2019-11-15 22:41:10,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:41:10 BoogieIcfgContainer [2019-11-15 22:41:10,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:41:10,997 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:41:10,997 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:41:10,998 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:41:10,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:40:33" (3/4) ... [2019-11-15 22:41:11,001 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:41:11,007 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2019-11-15 22:41:11,011 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-15 22:41:11,011 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 22:41:11,049 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2d418840-bd7a-4617-8c7a-13750607d9cc/bin/uautomizer/witness.graphml [2019-11-15 22:41:11,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:41:11,051 INFO L168 Benchmark]: Toolchain (without parser) took 37661.86 ms. Allocated memory was 1.0 GB in the beginning and 3.5 GB in the end (delta: 2.5 GB). Free memory was 944.8 MB in the beginning and 2.6 GB in the end (delta: -1.7 GB). Peak memory consumption was 791.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:41:11,051 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:41:11,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:41:11,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:41:11,053 INFO L168 Benchmark]: Boogie Preprocessor took 16.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:41:11,053 INFO L168 Benchmark]: RCFGBuilder took 204.93 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:41:11,054 INFO L168 Benchmark]: TraceAbstraction took 37023.04 ms. Allocated memory was 1.2 GB in the beginning and 3.5 GB in the end (delta: 2.4 GB). Free memory was 1.1 GB in the beginning and 2.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 805.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:41:11,054 INFO L168 Benchmark]: Witness Printer took 52.33 ms. Allocated memory is still 3.5 GB. Free memory was 2.7 GB in the beginning and 2.6 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:41:11,057 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 204.93 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 37023.04 ms. Allocated memory was 1.2 GB in the beginning and 3.5 GB in the end (delta: 2.4 GB). Free memory was 1.1 GB in the beginning and 2.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 805.1 MB. Max. memory is 11.5 GB. * Witness Printer took 52.33 ms. Allocated memory is still 3.5 GB. Free memory was 2.7 GB in the beginning and 2.6 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 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: 36.9s, OverallIterations: 15, TraceHistogramMax: 151, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, HoareTripleCheckerStatistics: 367 SDtfs, 1387 SDslu, 2143 SDs, 0 SdLazy, 4393 SolverSat, 1640 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6180 GetRequests, 5750 SyntacticMatches, 56 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4301 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 122 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 476 PreInvPairs, 716 NumberOfFragments, 169 HoareAnnotationTreeSize, 476 FomulaSimplifications, 1444 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 5 FomulaSimplificationsInter, 7230 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 21.3s InterpolantComputationTime, 8729 NumberOfCodeBlocks, 8472 NumberOfCodeBlocksAsserted, 277 NumberOfCheckSat, 8701 ConstructedInterpolants, 0 QuantifiedInterpolants, 11941161 SizeOfPredicates, 79 NumberOfNonLiveVariables, 9010 ConjunctsInSsa, 596 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 323198/380650 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...