./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 0.1.24-678e011 [2019-11-19 22:24:58,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:24:58,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:24:58,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:24:58,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:24:58,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:24:58,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:24:58,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:24:58,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:24:58,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:24:58,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:24:58,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:24:58,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:24:58,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:24:58,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:24:58,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:24:58,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:24:58,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:24:58,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:24:58,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:24:58,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:24:58,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:24:58,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:24:58,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:24:58,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:24:58,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:24:58,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:24:58,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:24:58,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:24:58,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:24:58,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:24:58,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:24:58,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:24:58,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:24:58,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:24:58,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:24:58,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:24:58,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:24:58,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:24:58,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:24:58,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:24:58,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 22:24:58,563 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:24:58,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:24:58,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:24:58,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:24:58,574 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:24:58,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:24:58,575 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:24:58,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:24:58,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:24:58,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:24:58,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:24:58,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:24:58,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:24:58,576 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:24:58,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:24:58,577 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:24:58,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:24:58,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:24:58,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:24:58,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:24:58,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:24:58,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:24:58,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:24:58,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:24:58,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:24:58,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:24:58,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:24:58,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:24:58,581 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_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:24:58,745 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:24:58,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:24:58,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:24:58,762 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:24:58,763 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:24:58,764 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/bin/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci02.c [2019-11-19 22:24:58,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/bin/uautomizer/data/83422211d/61bac939993e41559456656b936a4ddb/FLAG6cba19b30 [2019-11-19 22:24:59,160 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:24:59,161 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/sv-benchmarks/c/recursive/Fibonacci02.c [2019-11-19 22:24:59,165 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/bin/uautomizer/data/83422211d/61bac939993e41559456656b936a4ddb/FLAG6cba19b30 [2019-11-19 22:24:59,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/bin/uautomizer/data/83422211d/61bac939993e41559456656b936a4ddb [2019-11-19 22:24:59,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:24:59,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:24:59,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:24:59,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:24:59,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:24:59,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:24:59" (1/1) ... [2019-11-19 22:24:59,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c77a416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59, skipping insertion in model container [2019-11-19 22:24:59,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:24:59" (1/1) ... [2019-11-19 22:24:59,568 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:24:59,582 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:24:59,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:24:59,720 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:24:59,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:24:59,815 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:24:59,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59 WrapperNode [2019-11-19 22:24:59,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:24:59,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:24:59,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:24:59,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:24:59,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59" (1/1) ... [2019-11-19 22:24:59,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59" (1/1) ... [2019-11-19 22:24:59,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:24:59,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:24:59,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:24:59,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:24:59,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59" (1/1) ... [2019-11-19 22:24:59,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59" (1/1) ... [2019-11-19 22:24:59,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59" (1/1) ... [2019-11-19 22:24:59,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59" (1/1) ... [2019-11-19 22:24:59,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59" (1/1) ... [2019-11-19 22:24:59,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59" (1/1) ... [2019-11-19 22:24:59,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59" (1/1) ... [2019-11-19 22:24:59,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:24:59,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:24:59,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:24:59,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:24:59,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:24:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2019-11-19 22:24:59,915 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2019-11-19 22:24:59,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:24:59,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:25:00,078 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:25:00,079 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 22:25:00,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:25:00 BoogieIcfgContainer [2019-11-19 22:25:00,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:25:00,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:25:00,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:25:00,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:25:00,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:24:59" (1/3) ... [2019-11-19 22:25:00,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f83584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:25:00, skipping insertion in model container [2019-11-19 22:25:00,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:24:59" (2/3) ... [2019-11-19 22:25:00,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f83584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:25:00, skipping insertion in model container [2019-11-19 22:25:00,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:25:00" (3/3) ... [2019-11-19 22:25:00,086 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2019-11-19 22:25:00,100 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:25:00,105 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 22:25:00,115 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 22:25:00,134 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:25:00,134 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:25:00,135 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:25:00,135 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:25:00,135 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:25:00,135 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:25:00,136 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:25:00,136 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:25:00,150 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-19 22:25:00,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 22:25:00,155 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:00,156 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:00,156 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:00,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:00,161 INFO L82 PathProgramCache]: Analyzing trace with hash 238562696, now seen corresponding path program 1 times [2019-11-19 22:25:00,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:00,169 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162933767] [2019-11-19 22:25:00,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:25:00,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162933767] [2019-11-19 22:25:00,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:25:00,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 22:25:00,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211925186] [2019-11-19 22:25:00,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:25:00,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:00,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:25:00,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:25:00,368 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2019-11-19 22:25:00,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:00,466 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-11-19 22:25:00,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:25:00,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-19 22:25:00,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:00,475 INFO L225 Difference]: With dead ends: 27 [2019-11-19 22:25:00,475 INFO L226 Difference]: Without dead ends: 17 [2019-11-19 22:25:00,478 INFO L630 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 [2019-11-19 22:25:00,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-19 22:25:00,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-19 22:25:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-19 22:25:00,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-19 22:25:00,510 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2019-11-19 22:25:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:00,511 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-19 22:25:00,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:25:00,511 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-19 22:25:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 22:25:00,512 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:00,512 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:00,513 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:00,513 INFO L82 PathProgramCache]: Analyzing trace with hash -497654578, now seen corresponding path program 1 times [2019-11-19 22:25:00,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:00,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875208547] [2019-11-19 22:25:00,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:25:00,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875208547] [2019-11-19 22:25:00,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:25:00,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 22:25:00,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623933996] [2019-11-19 22:25:00,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:25:00,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:00,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:25:00,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:25:00,562 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2019-11-19 22:25:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:00,625 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-11-19 22:25:00,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:25:00,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-19 22:25:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:00,626 INFO L225 Difference]: With dead ends: 23 [2019-11-19 22:25:00,627 INFO L226 Difference]: Without dead ends: 19 [2019-11-19 22:25:00,627 INFO L630 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 [2019-11-19 22:25:00,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-19 22:25:00,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2019-11-19 22:25:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-19 22:25:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-19 22:25:00,633 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-11-19 22:25:00,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:00,634 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-19 22:25:00,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:25:00,634 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-19 22:25:00,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-19 22:25:00,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:00,636 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:00,636 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:00,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:00,637 INFO L82 PathProgramCache]: Analyzing trace with hash -850570499, now seen corresponding path program 1 times [2019-11-19 22:25:00,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:00,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285686692] [2019-11-19 22:25:00,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-19 22:25:00,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285686692] [2019-11-19 22:25:00,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605070743] [2019-11-19 22:25:00,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:00,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 22:25:00,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-19 22:25:00,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:00,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-19 22:25:00,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337304460] [2019-11-19 22:25:00,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 22:25:00,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:00,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 22:25:00,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:25:00,902 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 8 states. [2019-11-19 22:25:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:00,978 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2019-11-19 22:25:00,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 22:25:00,979 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-19 22:25:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:00,980 INFO L225 Difference]: With dead ends: 41 [2019-11-19 22:25:00,980 INFO L226 Difference]: Without dead ends: 26 [2019-11-19 22:25:00,981 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-19 22:25:00,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-19 22:25:00,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-19 22:25:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-19 22:25:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2019-11-19 22:25:00,988 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 22 [2019-11-19 22:25:00,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:00,989 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-11-19 22:25:00,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 22:25:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2019-11-19 22:25:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-19 22:25:00,991 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:00,991 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:01,194 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:01,194 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:01,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1834230885, now seen corresponding path program 1 times [2019-11-19 22:25:01,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:01,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210820003] [2019-11-19 22:25:01,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-19 22:25:01,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210820003] [2019-11-19 22:25:01,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885236190] [2019-11-19 22:25:01,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:01,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 22:25:01,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-19 22:25:01,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:01,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-19 22:25:01,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077359391] [2019-11-19 22:25:01,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 22:25:01,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:01,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 22:25:01,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:25:01,403 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand 8 states. [2019-11-19 22:25:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:01,520 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2019-11-19 22:25:01,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 22:25:01,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-11-19 22:25:01,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:01,524 INFO L225 Difference]: With dead ends: 47 [2019-11-19 22:25:01,524 INFO L226 Difference]: Without dead ends: 43 [2019-11-19 22:25:01,524 INFO L630 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 [2019-11-19 22:25:01,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-19 22:25:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-19 22:25:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-19 22:25:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2019-11-19 22:25:01,548 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 58 transitions. Word has length 23 [2019-11-19 22:25:01,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:01,548 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 58 transitions. [2019-11-19 22:25:01,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 22:25:01,549 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 58 transitions. [2019-11-19 22:25:01,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-19 22:25:01,551 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:01,552 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:01,752 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:01,752 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:01,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:01,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1177823382, now seen corresponding path program 2 times [2019-11-19 22:25:01,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:01,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120563256] [2019-11-19 22:25:01,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-19 22:25:01,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120563256] [2019-11-19 22:25:01,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292185468] [2019-11-19 22:25:01,874 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:01,907 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:25:01,907 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:25:01,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:25:01,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-19 22:25:01,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:01,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-11-19 22:25:01,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190592621] [2019-11-19 22:25:01,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:25:01,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:01,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:25:01,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:25:01,956 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand 10 states. [2019-11-19 22:25:02,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:02,100 INFO L93 Difference]: Finished difference Result 67 states and 101 transitions. [2019-11-19 22:25:02,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 22:25:02,101 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2019-11-19 22:25:02,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:02,102 INFO L225 Difference]: With dead ends: 67 [2019-11-19 22:25:02,102 INFO L226 Difference]: Without dead ends: 29 [2019-11-19 22:25:02,104 INFO L630 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 [2019-11-19 22:25:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-19 22:25:02,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-19 22:25:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-19 22:25:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-19 22:25:02,110 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 35 [2019-11-19 22:25:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:02,110 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-19 22:25:02,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:25:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-19 22:25:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-19 22:25:02,112 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:02,112 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:02,312 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:02,313 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:02,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2146852816, now seen corresponding path program 2 times [2019-11-19 22:25:02,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:02,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415808673] [2019-11-19 22:25:02,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:02,453 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-19 22:25:02,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415808673] [2019-11-19 22:25:02,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722140709] [2019-11-19 22:25:02,454 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:02,489 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:25:02,490 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:25:02,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:25:02,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-19 22:25:02,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:02,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2019-11-19 22:25:02,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461165866] [2019-11-19 22:25:02,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:25:02,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:02,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:25:02,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:25:02,517 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 10 states. [2019-11-19 22:25:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:02,630 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2019-11-19 22:25:02,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 22:25:02,631 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-11-19 22:25:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:02,633 INFO L225 Difference]: With dead ends: 52 [2019-11-19 22:25:02,633 INFO L226 Difference]: Without dead ends: 48 [2019-11-19 22:25:02,634 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:25:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-19 22:25:02,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2019-11-19 22:25:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-19 22:25:02,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2019-11-19 22:25:02,643 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 37 [2019-11-19 22:25:02,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:02,643 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2019-11-19 22:25:02,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:25:02,644 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2019-11-19 22:25:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-19 22:25:02,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:02,653 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 8, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:02,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:02,857 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:02,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:02,858 INFO L82 PathProgramCache]: Analyzing trace with hash -344833624, now seen corresponding path program 3 times [2019-11-19 22:25:02,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:02,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544865230] [2019-11-19 22:25:02,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,214 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 73 proven. 128 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2019-11-19 22:25:03,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544865230] [2019-11-19 22:25:03,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002084364] [2019-11-19 22:25:03,215 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:03,258 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-11-19 22:25:03,258 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:25:03,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:25:03,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 207 proven. 12 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2019-11-19 22:25:03,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:03,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2019-11-19 22:25:03,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356598419] [2019-11-19 22:25:03,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-19 22:25:03,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:03,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-19 22:25:03,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-11-19 22:25:03,315 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand 14 states. [2019-11-19 22:25:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:03,534 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2019-11-19 22:25:03,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 22:25:03,535 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2019-11-19 22:25:03,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:03,536 INFO L225 Difference]: With dead ends: 94 [2019-11-19 22:25:03,536 INFO L226 Difference]: Without dead ends: 54 [2019-11-19 22:25:03,537 INFO L630 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 [2019-11-19 22:25:03,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-19 22:25:03,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2019-11-19 22:25:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-19 22:25:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2019-11-19 22:25:03,545 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 89 [2019-11-19 22:25:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:03,546 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2019-11-19 22:25:03,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-19 22:25:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2019-11-19 22:25:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-19 22:25:03,548 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:03,548 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:03,750 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:03,751 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:03,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:03,751 INFO L82 PathProgramCache]: Analyzing trace with hash -181993491, now seen corresponding path program 4 times [2019-11-19 22:25:03,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:03,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028294731] [2019-11-19 22:25:03,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 57 proven. 117 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-11-19 22:25:04,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028294731] [2019-11-19 22:25:04,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087558324] [2019-11-19 22:25:04,047 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:04,085 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 22:25:04,085 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:25:04,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-19 22:25:04,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-11-19 22:25:04,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:04,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 17 [2019-11-19 22:25:04,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983528715] [2019-11-19 22:25:04,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-19 22:25:04,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:04,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-19 22:25:04,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2019-11-19 22:25:04,138 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand 17 states. [2019-11-19 22:25:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:04,441 INFO L93 Difference]: Finished difference Result 93 states and 137 transitions. [2019-11-19 22:25:04,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-19 22:25:04,441 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 78 [2019-11-19 22:25:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:04,443 INFO L225 Difference]: With dead ends: 93 [2019-11-19 22:25:04,443 INFO L226 Difference]: Without dead ends: 53 [2019-11-19 22:25:04,445 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2019-11-19 22:25:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-19 22:25:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2019-11-19 22:25:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-19 22:25:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2019-11-19 22:25:04,451 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 78 [2019-11-19 22:25:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:04,452 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2019-11-19 22:25:04,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-19 22:25:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2019-11-19 22:25:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-19 22:25:04,454 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:04,454 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:04,657 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:04,657 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:04,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash 2037341067, now seen corresponding path program 5 times [2019-11-19 22:25:04,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:04,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330164013] [2019-11-19 22:25:04,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 166 proven. 339 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2019-11-19 22:25:05,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330164013] [2019-11-19 22:25:05,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124377361] [2019-11-19 22:25:05,132 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:05,210 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2019-11-19 22:25:05,211 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:25:05,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-19 22:25:05,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 187 proven. 336 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2019-11-19 22:25:05,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:05,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 23 [2019-11-19 22:25:05,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626193213] [2019-11-19 22:25:05,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-19 22:25:05,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:05,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-19 22:25:05,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2019-11-19 22:25:05,318 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand 23 states. [2019-11-19 22:25:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:05,806 INFO L93 Difference]: Finished difference Result 111 states and 175 transitions. [2019-11-19 22:25:05,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-19 22:25:05,807 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 132 [2019-11-19 22:25:05,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:05,808 INFO L225 Difference]: With dead ends: 111 [2019-11-19 22:25:05,808 INFO L226 Difference]: Without dead ends: 70 [2019-11-19 22:25:05,810 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=282, Invalid=908, Unknown=0, NotChecked=0, Total=1190 [2019-11-19 22:25:05,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-19 22:25:05,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2019-11-19 22:25:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-19 22:25:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2019-11-19 22:25:05,832 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 132 [2019-11-19 22:25:05,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:05,832 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2019-11-19 22:25:05,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-19 22:25:05,833 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2019-11-19 22:25:05,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-19 22:25:05,837 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:05,838 INFO L410 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:06,040 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:06,041 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:06,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:06,041 INFO L82 PathProgramCache]: Analyzing trace with hash 418459252, now seen corresponding path program 6 times [2019-11-19 22:25:06,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:06,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433366733] [2019-11-19 22:25:06,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2019-11-19 22:25:06,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433366733] [2019-11-19 22:25:06,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175346368] [2019-11-19 22:25:06,413 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:06,499 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-11-19 22:25:06,499 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:25:06,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-19 22:25:06,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 202 proven. 241 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2019-11-19 22:25:06,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:06,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 16 [2019-11-19 22:25:06,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339070476] [2019-11-19 22:25:06,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-19 22:25:06,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:06,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-19 22:25:06,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2019-11-19 22:25:06,554 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand 16 states. [2019-11-19 22:25:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:06,764 INFO L93 Difference]: Finished difference Result 182 states and 262 transitions. [2019-11-19 22:25:06,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 22:25:06,765 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 173 [2019-11-19 22:25:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:06,768 INFO L225 Difference]: With dead ends: 182 [2019-11-19 22:25:06,768 INFO L226 Difference]: Without dead ends: 178 [2019-11-19 22:25:06,769 INFO L630 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 [2019-11-19 22:25:06,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-11-19 22:25:06,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 166. [2019-11-19 22:25:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-11-19 22:25:06,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 239 transitions. [2019-11-19 22:25:06,800 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 239 transitions. Word has length 173 [2019-11-19 22:25:06,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:06,800 INFO L462 AbstractCegarLoop]: Abstraction has 166 states and 239 transitions. [2019-11-19 22:25:06,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-19 22:25:06,800 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 239 transitions. [2019-11-19 22:25:06,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2019-11-19 22:25:06,806 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:06,806 INFO L410 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:07,013 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:07,013 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:07,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:07,014 INFO L82 PathProgramCache]: Analyzing trace with hash -53992125, now seen corresponding path program 7 times [2019-11-19 22:25:07,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:07,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174149893] [2019-11-19 22:25:07,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1318 proven. 1439 refuted. 0 times theorem prover too weak. 3282 trivial. 0 not checked. [2019-11-19 22:25:08,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174149893] [2019-11-19 22:25:08,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347772481] [2019-11-19 22:25:08,097 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:08,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-19 22:25:08,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 204 proven. 1348 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2019-11-19 22:25:08,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:08,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 29 [2019-11-19 22:25:08,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093628421] [2019-11-19 22:25:08,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-19 22:25:08,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:08,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-19 22:25:08,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2019-11-19 22:25:08,348 INFO L87 Difference]: Start difference. First operand 166 states and 239 transitions. Second operand 29 states. [2019-11-19 22:25:09,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:09,101 INFO L93 Difference]: Finished difference Result 283 states and 500 transitions. [2019-11-19 22:25:09,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-11-19 22:25:09,102 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 323 [2019-11-19 22:25:09,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:09,105 INFO L225 Difference]: With dead ends: 283 [2019-11-19 22:25:09,105 INFO L226 Difference]: Without dead ends: 127 [2019-11-19 22:25:09,107 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=482, Invalid=1774, Unknown=0, NotChecked=0, Total=2256 [2019-11-19 22:25:09,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-11-19 22:25:09,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 106. [2019-11-19 22:25:09,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-19 22:25:09,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 153 transitions. [2019-11-19 22:25:09,122 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 153 transitions. Word has length 323 [2019-11-19 22:25:09,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:09,122 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 153 transitions. [2019-11-19 22:25:09,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-19 22:25:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 153 transitions. [2019-11-19 22:25:09,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2019-11-19 22:25:09,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:09,142 INFO L410 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:09,346 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:09,346 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:09,346 INFO L82 PathProgramCache]: Analyzing trace with hash -485542170, now seen corresponding path program 8 times [2019-11-19 22:25:09,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:09,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891321306] [2019-11-19 22:25:09,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 4057 proven. 6090 refuted. 0 times theorem prover too weak. 22949 trivial. 0 not checked. [2019-11-19 22:25:12,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891321306] [2019-11-19 22:25:12,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190980312] [2019-11-19 22:25:12,392 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:12,622 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:25:12,622 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:25:12,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-19 22:25:12,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 466 proven. 4033 refuted. 0 times theorem prover too weak. 28597 trivial. 0 not checked. [2019-11-19 22:25:12,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:12,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 12] total 37 [2019-11-19 22:25:12,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233242384] [2019-11-19 22:25:12,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-11-19 22:25:12,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:12,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-11-19 22:25:12,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2019-11-19 22:25:12,992 INFO L87 Difference]: Start difference. First operand 106 states and 153 transitions. Second operand 37 states. [2019-11-19 22:25:13,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:13,821 INFO L93 Difference]: Finished difference Result 236 states and 417 transitions. [2019-11-19 22:25:13,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-19 22:25:13,822 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 745 [2019-11-19 22:25:13,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:13,825 INFO L225 Difference]: With dead ends: 236 [2019-11-19 22:25:13,825 INFO L226 Difference]: Without dead ends: 140 [2019-11-19 22:25:13,827 INFO L630 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 [2019-11-19 22:25:13,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-11-19 22:25:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2019-11-19 22:25:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-19 22:25:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 160 transitions. [2019-11-19 22:25:13,851 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 160 transitions. Word has length 745 [2019-11-19 22:25:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:13,853 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 160 transitions. [2019-11-19 22:25:13,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-11-19 22:25:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 160 transitions. [2019-11-19 22:25:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2019-11-19 22:25:13,875 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:13,875 INFO L410 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:14,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:14,081 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:14,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:14,082 INFO L82 PathProgramCache]: Analyzing trace with hash -2028492684, now seen corresponding path program 9 times [2019-11-19 22:25:14,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:14,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72932992] [2019-11-19 22:25:14,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-11-19 22:25:18,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72932992] [2019-11-19 22:25:18,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170619838] [2019-11-19 22:25:18,181 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:18,648 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2019-11-19 22:25:18,648 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:25:18,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 439 conjunts are in the unsatisfiable core [2019-11-19 22:25:18,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-11-19 22:25:21,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:21,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2019-11-19 22:25:21,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093487606] [2019-11-19 22:25:21,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-19 22:25:21,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:21,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-19 22:25:21,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2019-11-19 22:25:21,202 INFO L87 Difference]: Start difference. First operand 110 states and 160 transitions. Second operand 36 states. [2019-11-19 22:25:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:21,740 INFO L93 Difference]: Finished difference Result 120 states and 182 transitions. [2019-11-19 22:25:21,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-19 22:25:21,741 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 745 [2019-11-19 22:25:21,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:21,744 INFO L225 Difference]: With dead ends: 120 [2019-11-19 22:25:21,745 INFO L226 Difference]: Without dead ends: 116 [2019-11-19 22:25:21,745 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1183 GetRequests, 1094 SyntacticMatches, 55 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2019-11-19 22:25:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-19 22:25:21,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2019-11-19 22:25:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-11-19 22:25:21,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 177 transitions. [2019-11-19 22:25:21,757 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 177 transitions. Word has length 745 [2019-11-19 22:25:21,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:21,759 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 177 transitions. [2019-11-19 22:25:21,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-19 22:25:21,759 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 177 transitions. [2019-11-19 22:25:21,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2019-11-19 22:25:21,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:21,767 INFO L410 BasicCegarLoop]: trace histogram [135, 135, 109, 67, 67, 67, 67, 67, 67, 67, 42, 26, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:21,972 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:21,972 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:21,972 INFO L82 PathProgramCache]: Analyzing trace with hash -703398773, now seen corresponding path program 10 times [2019-11-19 22:25:21,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:21,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080411509] [2019-11-19 22:25:21,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 3587 proven. 7095 refuted. 0 times theorem prover too weak. 40228 trivial. 0 not checked. [2019-11-19 22:25:25,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080411509] [2019-11-19 22:25:25,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896802676] [2019-11-19 22:25:25,708 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:25,901 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 22:25:25,901 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:25:25,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-19 22:25:25,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 3596 proven. 2302 refuted. 0 times theorem prover too weak. 45012 trivial. 0 not checked. [2019-11-19 22:25:26,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:26,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 38 [2019-11-19 22:25:26,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638724233] [2019-11-19 22:25:26,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-19 22:25:26,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:26,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-19 22:25:26,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1125, Unknown=0, NotChecked=0, Total=1406 [2019-11-19 22:25:26,502 INFO L87 Difference]: Start difference. First operand 115 states and 177 transitions. Second operand 38 states. [2019-11-19 22:25:27,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:27,449 INFO L93 Difference]: Finished difference Result 294 states and 566 transitions. [2019-11-19 22:25:27,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-11-19 22:25:27,450 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 922 [2019-11-19 22:25:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:27,453 INFO L225 Difference]: With dead ends: 294 [2019-11-19 22:25:27,454 INFO L226 Difference]: Without dead ends: 157 [2019-11-19 22:25:27,457 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 1188 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=790, Invalid=3370, Unknown=0, NotChecked=0, Total=4160 [2019-11-19 22:25:27,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-11-19 22:25:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 131. [2019-11-19 22:25:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-19 22:25:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 178 transitions. [2019-11-19 22:25:27,477 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 178 transitions. Word has length 922 [2019-11-19 22:25:27,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:27,477 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 178 transitions. [2019-11-19 22:25:27,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-19 22:25:27,478 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 178 transitions. [2019-11-19 22:25:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2019-11-19 22:25:27,486 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:25:27,487 INFO L410 BasicCegarLoop]: trace histogram [151, 151, 122, 75, 75, 75, 75, 75, 75, 75, 47, 29, 1, 1, 1, 1, 1, 1] [2019-11-19 22:25:27,699 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:27,699 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:25:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:25:27,700 INFO L82 PathProgramCache]: Analyzing trace with hash -832003161, now seen corresponding path program 11 times [2019-11-19 22:25:27,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:25:27,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453493244] [2019-11-19 22:25:27,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:25:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:25:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 5267 proven. 7093 refuted. 0 times theorem prover too weak. 51421 trivial. 0 not checked. [2019-11-19 22:25:32,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453493244] [2019-11-19 22:25:32,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088928324] [2019-11-19 22:25:32,070 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/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 [2019-11-19 22:25:32,714 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2019-11-19 22:25:32,714 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:25:32,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 2203 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-19 22:25:32,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:25:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 7697 proven. 4310 refuted. 0 times theorem prover too weak. 51774 trivial. 0 not checked. [2019-11-19 22:25:33,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:25:33,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 20] total 40 [2019-11-19 22:25:33,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916574493] [2019-11-19 22:25:33,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-19 22:25:33,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:25:33,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-19 22:25:33,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2019-11-19 22:25:33,321 INFO L87 Difference]: Start difference. First operand 131 states and 178 transitions. Second operand 40 states. [2019-11-19 22:25:33,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:25:33,948 INFO L93 Difference]: Finished difference Result 263 states and 361 transitions. [2019-11-19 22:25:33,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-19 22:25:33,949 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 1031 [2019-11-19 22:25:33,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:25:33,951 INFO L225 Difference]: With dead ends: 263 [2019-11-19 22:25:33,951 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 22:25:33,953 INFO L630 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 [2019-11-19 22:25:33,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 22:25:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 22:25:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 22:25:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 22:25:33,954 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1031 [2019-11-19 22:25:33,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:25:33,954 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:25:33,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-19 22:25:33,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:25:33,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 22:25:34,164 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:25:34,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 22:25:34,749 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 6 [2019-11-19 22:25:35,364 WARN L191 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 58 [2019-11-19 22:25:35,371 INFO L444 ceAbstractionStarter]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2019-11-19 22:25:35,371 INFO L447 ceAbstractionStarter]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2019-11-19 22:25:35,371 INFO L440 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (< 1 fibonacci_~n) (= fibonacci_~n |fibonacci_#in~n|)) [2019-11-19 22:25:35,371 INFO L444 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-19 22:25:35,371 INFO L440 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)))))) [2019-11-19 22:25:35,372 INFO L444 ceAbstractionStarter]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2019-11-19 22:25:35,372 INFO L444 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-11-19 22:25:35,372 INFO L444 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-11-19 22:25:35,372 INFO L444 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2019-11-19 22:25:35,372 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 22:25:35,372 INFO L444 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2019-11-19 22:25:35,372 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 22:25:35,372 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 22:25:35,372 INFO L444 ceAbstractionStarter]: For program point L28(lines 28 32) no Hoare annotation was computed. [2019-11-19 22:25:35,372 INFO L440 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 9) (<= 9 ULTIMATE.start_main_~x~0)) [2019-11-19 22:25:35,372 INFO L444 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-11-19 22:25:35,372 INFO L440 ceAbstractionStarter]: At program point L25(lines 25 33) the Hoare annotation is: (<= 9 ULTIMATE.start_main_~x~0) [2019-11-19 22:25:35,372 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 31) no Hoare annotation was computed. [2019-11-19 22:25:35,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:25:35 BoogieIcfgContainer [2019-11-19 22:25:35,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:25:35,383 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:25:35,383 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:25:35,384 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:25:35,384 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:25:00" (3/4) ... [2019-11-19 22:25:35,388 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 22:25:35,392 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2019-11-19 22:25:35,397 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-19 22:25:35,397 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-19 22:25:35,465 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_75b001b8-0f75-487f-baba-4b371300d327/bin/uautomizer/witness.graphml [2019-11-19 22:25:35,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:25:35,467 INFO L168 Benchmark]: Toolchain (without parser) took 35915.31 ms. Allocated memory was 1.0 GB in the beginning and 3.0 GB in the end (delta: 2.0 GB). Free memory was 942.0 MB in the beginning and 2.9 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.9 GB. Max. memory is 11.5 GB. [2019-11-19 22:25:35,467 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:25:35,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -200.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:25:35,468 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:25:35,469 INFO L168 Benchmark]: Boogie Preprocessor took 14.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:25:35,469 INFO L168 Benchmark]: RCFGBuilder took 222.75 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:25:35,470 INFO L168 Benchmark]: TraceAbstraction took 35301.89 ms. Allocated memory was 1.2 GB in the beginning and 2.8 GB in the end (delta: 1.6 GB). Free memory was 1.1 GB in the beginning and 850.2 MB in the end (delta: 274.0 MB). Peak memory consumption was 1.9 GB. Max. memory is 11.5 GB. [2019-11-19 22:25:35,470 INFO L168 Benchmark]: Witness Printer took 82.42 ms. Allocated memory was 2.8 GB in the beginning and 3.0 GB in the end (delta: 200.3 MB). Free memory was 850.2 MB in the beginning and 2.9 GB in the end (delta: -2.1 GB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:25:35,473 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -200.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 222.75 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 35301.89 ms. Allocated memory was 1.2 GB in the beginning and 2.8 GB in the end (delta: 1.6 GB). Free memory was 1.1 GB in the beginning and 850.2 MB in the end (delta: 274.0 MB). Peak memory consumption was 1.9 GB. Max. memory is 11.5 GB. * Witness Printer took 82.42 ms. Allocated memory was 2.8 GB in the beginning and 3.0 GB in the end (delta: 200.3 MB). Free memory was 850.2 MB in the beginning and 2.9 GB in the end (delta: -2.1 GB). Peak memory consumption was 7.4 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: 35.2s, OverallIterations: 15, TraceHistogramMax: 151, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, HoareTripleCheckerStatistics: 367 SDtfs, 1387 SDslu, 2143 SDs, 0 SdLazy, 4379 SolverSat, 1645 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6180 GetRequests, 5750 SyntacticMatches, 56 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4301 ImplicationChecksByTransitivity, 7.1s 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, 0.3s HoareSimplificationTime, 5 FomulaSimplificationsInter, 7230 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 20.3s 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...