./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Fibonacci02_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e40a98558d0111ea95f3ee60a44cc14c7768182 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 00:41:57,383 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 00:41:57,384 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 00:41:57,390 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 00:41:57,390 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 00:41:57,390 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 00:41:57,391 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 00:41:57,392 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 00:41:57,392 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 00:41:57,393 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 00:41:57,393 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 00:41:57,393 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 00:41:57,394 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 00:41:57,394 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 00:41:57,395 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 00:41:57,395 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 00:41:57,395 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 00:41:57,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 00:41:57,397 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 00:41:57,398 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 00:41:57,398 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 00:41:57,399 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 00:41:57,400 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 00:41:57,400 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 00:41:57,400 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 00:41:57,400 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 00:41:57,401 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 00:41:57,401 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 00:41:57,402 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 00:41:57,402 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 00:41:57,402 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 00:41:57,403 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 00:41:57,403 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 00:41:57,403 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 00:41:57,403 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 00:41:57,404 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 00:41:57,404 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 00:41:57,410 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 00:41:57,411 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 00:41:57,411 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 00:41:57,411 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 00:41:57,411 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 00:41:57,412 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 00:41:57,412 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 00:41:57,412 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 00:41:57,412 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 00:41:57,412 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 00:41:57,412 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 00:41:57,412 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 00:41:57,412 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 00:41:57,412 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 00:41:57,412 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 00:41:57,412 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 00:41:57,412 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 00:41:57,413 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 00:41:57,413 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 00:41:57,413 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 00:41:57,413 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 00:41:57,413 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 00:41:57,413 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 00:41:57,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 00:41:57,413 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 00:41:57,413 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 00:41:57,413 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 00:41:57,414 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 00:41:57,414 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 00:41:57,414 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 00:41:57,414 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e40a98558d0111ea95f3ee60a44cc14c7768182 [2018-12-02 00:41:57,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 00:41:57,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 00:41:57,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 00:41:57,442 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 00:41:57,442 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 00:41:57,442 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci02_true-unreach-call_true-no-overflow_true-termination.c [2018-12-02 00:41:57,479 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/data/34ca6af90/3c0dd3d2dd93407a961c5afbfd92dcab/FLAG953dcc9bb [2018-12-02 00:41:57,904 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 00:41:57,905 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/sv-benchmarks/c/recursive/Fibonacci02_true-unreach-call_true-no-overflow_true-termination.c [2018-12-02 00:41:57,908 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/data/34ca6af90/3c0dd3d2dd93407a961c5afbfd92dcab/FLAG953dcc9bb [2018-12-02 00:41:57,916 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/data/34ca6af90/3c0dd3d2dd93407a961c5afbfd92dcab [2018-12-02 00:41:57,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 00:41:57,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 00:41:57,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 00:41:57,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 00:41:57,921 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 00:41:57,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:41:57" (1/1) ... [2018-12-02 00:41:57,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54724d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:57, skipping insertion in model container [2018-12-02 00:41:57,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:41:57" (1/1) ... [2018-12-02 00:41:57,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 00:41:57,935 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 00:41:58,015 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:41:58,017 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 00:41:58,025 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:41:58,033 INFO L195 MainTranslator]: Completed translation [2018-12-02 00:41:58,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58 WrapperNode [2018-12-02 00:41:58,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 00:41:58,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 00:41:58,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 00:41:58,034 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 00:41:58,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58" (1/1) ... [2018-12-02 00:41:58,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58" (1/1) ... [2018-12-02 00:41:58,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 00:41:58,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 00:41:58,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 00:41:58,045 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 00:41:58,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58" (1/1) ... [2018-12-02 00:41:58,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58" (1/1) ... [2018-12-02 00:41:58,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58" (1/1) ... [2018-12-02 00:41:58,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58" (1/1) ... [2018-12-02 00:41:58,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58" (1/1) ... [2018-12-02 00:41:58,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58" (1/1) ... [2018-12-02 00:41:58,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58" (1/1) ... [2018-12-02 00:41:58,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 00:41:58,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 00:41:58,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 00:41:58,055 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 00:41:58,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 00:41:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2018-12-02 00:41:58,116 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2018-12-02 00:41:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 00:41:58,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 00:41:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 00:41:58,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 00:41:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 00:41:58,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 00:41:58,194 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 00:41:58,194 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-02 00:41:58,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:41:58 BoogieIcfgContainer [2018-12-02 00:41:58,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 00:41:58,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 00:41:58,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 00:41:58,198 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 00:41:58,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:41:57" (1/3) ... [2018-12-02 00:41:58,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db9cc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:41:58, skipping insertion in model container [2018-12-02 00:41:58,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:58" (2/3) ... [2018-12-02 00:41:58,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db9cc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:41:58, skipping insertion in model container [2018-12-02 00:41:58,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:41:58" (3/3) ... [2018-12-02 00:41:58,201 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci02_true-unreach-call_true-no-overflow_true-termination.c [2018-12-02 00:41:58,209 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 00:41:58,215 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 00:41:58,228 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 00:41:58,252 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 00:41:58,253 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 00:41:58,253 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 00:41:58,253 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 00:41:58,253 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 00:41:58,253 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 00:41:58,254 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 00:41:58,254 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 00:41:58,254 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 00:41:58,265 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-12-02 00:41:58,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 00:41:58,269 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:41:58,269 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:41:58,271 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:41:58,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:41:58,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1356498376, now seen corresponding path program 1 times [2018-12-02 00:41:58,275 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:41:58,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:41:58,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:58,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:41:58,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:41:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:41:58,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 00:41:58,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 00:41:58,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 00:41:58,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 00:41:58,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 00:41:58,386 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2018-12-02 00:41:58,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:41:58,435 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-12-02 00:41:58,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 00:41:58,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-02 00:41:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:41:58,445 INFO L225 Difference]: With dead ends: 33 [2018-12-02 00:41:58,445 INFO L226 Difference]: Without dead ends: 21 [2018-12-02 00:41:58,447 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 00:41:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-02 00:41:58,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-12-02 00:41:58,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-02 00:41:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-12-02 00:41:58,474 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2018-12-02 00:41:58,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:41:58,474 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-12-02 00:41:58,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 00:41:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2018-12-02 00:41:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 00:41:58,476 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:41:58,476 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:41:58,476 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:41:58,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:41:58,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1591396412, now seen corresponding path program 1 times [2018-12-02 00:41:58,476 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:41:58,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:41:58,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:58,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:41:58,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:41:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:41:58,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 00:41:58,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 00:41:58,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 00:41:58,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 00:41:58,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 00:41:58,503 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2018-12-02 00:41:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:41:58,538 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-12-02 00:41:58,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 00:41:58,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-02 00:41:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:41:58,539 INFO L225 Difference]: With dead ends: 27 [2018-12-02 00:41:58,539 INFO L226 Difference]: Without dead ends: 23 [2018-12-02 00:41:58,540 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 00:41:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-02 00:41:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-12-02 00:41:58,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-02 00:41:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-12-02 00:41:58,545 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2018-12-02 00:41:58,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:41:58,545 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-12-02 00:41:58,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 00:41:58,545 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2018-12-02 00:41:58,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 00:41:58,546 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:41:58,546 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:41:58,547 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:41:58,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:41:58,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1761048597, now seen corresponding path program 1 times [2018-12-02 00:41:58,547 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:41:58,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:41:58,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:58,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:41:58,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:41:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 00:41:58,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:41:58,603 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:41:58,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:41:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:41:58,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:41:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 00:41:58,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:41:58,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-12-02 00:41:58,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 00:41:58,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 00:41:58,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-02 00:41:58,675 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 8 states. [2018-12-02 00:41:58,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:41:58,741 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2018-12-02 00:41:58,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 00:41:58,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-12-02 00:41:58,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:41:58,742 INFO L225 Difference]: With dead ends: 38 [2018-12-02 00:41:58,742 INFO L226 Difference]: Without dead ends: 23 [2018-12-02 00:41:58,742 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-12-02 00:41:58,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-02 00:41:58,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-02 00:41:58,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-02 00:41:58,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-12-02 00:41:58,747 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2018-12-02 00:41:58,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:41:58,748 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-12-02 00:41:58,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 00:41:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-12-02 00:41:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 00:41:58,749 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:41:58,749 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:41:58,749 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:41:58,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:41:58,749 INFO L82 PathProgramCache]: Analyzing trace with hash -624449707, now seen corresponding path program 1 times [2018-12-02 00:41:58,749 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:41:58,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:41:58,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:58,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:41:58,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:41:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 00:41:58,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:41:58,782 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:41:58,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:41:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:41:58,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:41:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 00:41:58,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:41:58,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-02 00:41:58,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 00:41:58,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 00:41:58,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-02 00:41:58,816 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2018-12-02 00:41:58,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:41:58,856 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2018-12-02 00:41:58,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 00:41:58,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-12-02 00:41:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:41:58,857 INFO L225 Difference]: With dead ends: 32 [2018-12-02 00:41:58,857 INFO L226 Difference]: Without dead ends: 28 [2018-12-02 00:41:58,857 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-02 00:41:58,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-02 00:41:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-02 00:41:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-02 00:41:58,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2018-12-02 00:41:58,861 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 27 [2018-12-02 00:41:58,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:41:58,861 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2018-12-02 00:41:58,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 00:41:58,862 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2018-12-02 00:41:58,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-02 00:41:58,862 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:41:58,862 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:41:58,862 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:41:58,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:41:58,863 INFO L82 PathProgramCache]: Analyzing trace with hash -111055954, now seen corresponding path program 2 times [2018-12-02 00:41:58,863 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:41:58,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:41:58,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:58,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:41:58,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:41:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-02 00:41:58,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:41:58,900 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:41:58,907 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 00:41:58,919 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 00:41:58,919 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 00:41:58,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:41:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-12-02 00:41:58,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:41:58,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2018-12-02 00:41:58,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 00:41:58,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 00:41:58,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-02 00:41:58,978 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 8 states. [2018-12-02 00:41:59,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:41:59,041 INFO L93 Difference]: Finished difference Result 40 states and 60 transitions. [2018-12-02 00:41:59,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 00:41:59,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2018-12-02 00:41:59,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:41:59,042 INFO L225 Difference]: With dead ends: 40 [2018-12-02 00:41:59,042 INFO L226 Difference]: Without dead ends: 36 [2018-12-02 00:41:59,043 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-12-02 00:41:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-02 00:41:59,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-12-02 00:41:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-02 00:41:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2018-12-02 00:41:59,047 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 40 [2018-12-02 00:41:59,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:41:59,048 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2018-12-02 00:41:59,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 00:41:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2018-12-02 00:41:59,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-12-02 00:41:59,049 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:41:59,049 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:41:59,049 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:41:59,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:41:59,049 INFO L82 PathProgramCache]: Analyzing trace with hash -383842586, now seen corresponding path program 3 times [2018-12-02 00:41:59,050 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:41:59,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:41:59,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:59,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 00:41:59,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:41:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-12-02 00:41:59,104 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:41:59,104 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:41:59,109 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 00:41:59,121 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-12-02 00:41:59,122 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 00:41:59,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:41:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-12-02 00:41:59,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:41:59,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-02 00:41:59,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 00:41:59,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 00:41:59,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-02 00:41:59,150 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand 7 states. [2018-12-02 00:41:59,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:41:59,203 INFO L93 Difference]: Finished difference Result 48 states and 81 transitions. [2018-12-02 00:41:59,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 00:41:59,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2018-12-02 00:41:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:41:59,205 INFO L225 Difference]: With dead ends: 48 [2018-12-02 00:41:59,205 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 00:41:59,205 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-12-02 00:41:59,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 00:41:59,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2018-12-02 00:41:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 00:41:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 55 transitions. [2018-12-02 00:41:59,210 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 55 transitions. Word has length 68 [2018-12-02 00:41:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:41:59,211 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 55 transitions. [2018-12-02 00:41:59,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 00:41:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 55 transitions. [2018-12-02 00:41:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-12-02 00:41:59,212 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:41:59,212 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 8, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:41:59,212 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:41:59,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:41:59,212 INFO L82 PathProgramCache]: Analyzing trace with hash 696026233, now seen corresponding path program 4 times [2018-12-02 00:41:59,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:41:59,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:41:59,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:59,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 00:41:59,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:41:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 110 proven. 8 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-12-02 00:41:59,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:41:59,289 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:41:59,296 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 00:41:59,310 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 00:41:59,311 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 00:41:59,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:41:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 22 proven. 123 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-12-02 00:41:59,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:41:59,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2018-12-02 00:41:59,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-02 00:41:59,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-02 00:41:59,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-12-02 00:41:59,378 INFO L87 Difference]: Start difference. First operand 36 states and 55 transitions. Second operand 14 states. [2018-12-02 00:41:59,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:41:59,613 INFO L93 Difference]: Finished difference Result 83 states and 148 transitions. [2018-12-02 00:41:59,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-02 00:41:59,614 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2018-12-02 00:41:59,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:41:59,615 INFO L225 Difference]: With dead ends: 83 [2018-12-02 00:41:59,615 INFO L226 Difference]: Without dead ends: 53 [2018-12-02 00:41:59,616 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2018-12-02 00:41:59,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-02 00:41:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2018-12-02 00:41:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-12-02 00:41:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2018-12-02 00:41:59,620 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 81 [2018-12-02 00:41:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:41:59,621 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2018-12-02 00:41:59,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-02 00:41:59,621 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2018-12-02 00:41:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-12-02 00:41:59,622 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:41:59,622 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:41:59,622 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:41:59,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:41:59,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1110256604, now seen corresponding path program 5 times [2018-12-02 00:41:59,622 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:41:59,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:41:59,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:59,623 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 00:41:59,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:41:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:41:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 319 proven. 55 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2018-12-02 00:41:59,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:41:59,710 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:41:59,716 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 00:41:59,744 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2018-12-02 00:41:59,744 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 00:41:59,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:41:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 353 proven. 303 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2018-12-02 00:41:59,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:41:59,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 17 [2018-12-02 00:41:59,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-02 00:41:59,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-02 00:41:59,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-12-02 00:41:59,849 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 17 states. [2018-12-02 00:42:00,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:42:00,219 INFO L93 Difference]: Finished difference Result 130 states and 221 transitions. [2018-12-02 00:42:00,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-12-02 00:42:00,220 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 150 [2018-12-02 00:42:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:42:00,221 INFO L225 Difference]: With dead ends: 130 [2018-12-02 00:42:00,221 INFO L226 Difference]: Without dead ends: 76 [2018-12-02 00:42:00,222 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2018-12-02 00:42:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-12-02 00:42:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2018-12-02 00:42:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-12-02 00:42:00,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2018-12-02 00:42:00,227 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 150 [2018-12-02 00:42:00,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:42:00,228 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2018-12-02 00:42:00,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-02 00:42:00,228 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2018-12-02 00:42:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-12-02 00:42:00,229 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:42:00,229 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:42:00,230 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:42:00,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:42:00,230 INFO L82 PathProgramCache]: Analyzing trace with hash 580129251, now seen corresponding path program 6 times [2018-12-02 00:42:00,230 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:42:00,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:42:00,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:00,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 00:42:00,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:42:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 174 proven. 59 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2018-12-02 00:42:00,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:42:00,293 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:42:00,298 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 00:42:00,319 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-12-02 00:42:00,319 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 00:42:00,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:42:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2018-12-02 00:42:00,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:42:00,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 9 [2018-12-02 00:42:00,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 00:42:00,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 00:42:00,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-12-02 00:42:00,360 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand 9 states. [2018-12-02 00:42:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:42:00,418 INFO L93 Difference]: Finished difference Result 74 states and 91 transitions. [2018-12-02 00:42:00,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 00:42:00,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2018-12-02 00:42:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:42:00,420 INFO L225 Difference]: With dead ends: 74 [2018-12-02 00:42:00,420 INFO L226 Difference]: Without dead ends: 70 [2018-12-02 00:42:00,420 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-12-02 00:42:00,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-12-02 00:42:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-12-02 00:42:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-12-02 00:42:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2018-12-02 00:42:00,427 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 109 [2018-12-02 00:42:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:42:00,428 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2018-12-02 00:42:00,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 00:42:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2018-12-02 00:42:00,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-12-02 00:42:00,430 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:42:00,430 INFO L402 BasicCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:42:00,430 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:42:00,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:42:00,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1009195755, now seen corresponding path program 7 times [2018-12-02 00:42:00,431 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:42:00,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:42:00,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:00,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 00:42:00,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:42:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 137 proven. 567 refuted. 0 times theorem prover too weak. 1876 trivial. 0 not checked. [2018-12-02 00:42:00,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:42:00,524 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:42:00,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:42:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:42:00,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:42:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 716 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2018-12-02 00:42:00,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:42:00,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 10 [2018-12-02 00:42:00,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 00:42:00,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 00:42:00,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-12-02 00:42:00,637 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand 10 states. [2018-12-02 00:42:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:42:00,718 INFO L93 Difference]: Finished difference Result 79 states and 103 transitions. [2018-12-02 00:42:00,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 00:42:00,718 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 218 [2018-12-02 00:42:00,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:42:00,719 INFO L225 Difference]: With dead ends: 79 [2018-12-02 00:42:00,719 INFO L226 Difference]: Without dead ends: 75 [2018-12-02 00:42:00,720 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2018-12-02 00:42:00,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-12-02 00:42:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-12-02 00:42:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-12-02 00:42:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2018-12-02 00:42:00,725 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 218 [2018-12-02 00:42:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:42:00,725 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2018-12-02 00:42:00,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 00:42:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2018-12-02 00:42:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-12-02 00:42:00,728 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:42:00,728 INFO L402 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:42:00,728 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:42:00,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:42:00,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1795105459, now seen corresponding path program 8 times [2018-12-02 00:42:00,728 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:42:00,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:42:00,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:00,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:42:00,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:42:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 238 proven. 1112 refuted. 0 times theorem prover too weak. 4689 trivial. 0 not checked. [2018-12-02 00:42:00,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:42:00,844 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:42:00,849 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 00:42:00,893 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 00:42:00,893 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 00:42:00,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:42:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 204 proven. 1348 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2018-12-02 00:42:00,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:42:00,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 11 [2018-12-02 00:42:00,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 00:42:00,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 00:42:00,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-02 00:42:00,959 INFO L87 Difference]: Start difference. First operand 75 states and 99 transitions. Second operand 11 states. [2018-12-02 00:42:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:42:01,070 INFO L93 Difference]: Finished difference Result 84 states and 117 transitions. [2018-12-02 00:42:01,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 00:42:01,070 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 327 [2018-12-02 00:42:01,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:42:01,072 INFO L225 Difference]: With dead ends: 84 [2018-12-02 00:42:01,072 INFO L226 Difference]: Without dead ends: 80 [2018-12-02 00:42:01,072 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2018-12-02 00:42:01,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-12-02 00:42:01,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-12-02 00:42:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-12-02 00:42:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 113 transitions. [2018-12-02 00:42:01,082 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 113 transitions. Word has length 327 [2018-12-02 00:42:01,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:42:01,082 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 113 transitions. [2018-12-02 00:42:01,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 00:42:01,083 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 113 transitions. [2018-12-02 00:42:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2018-12-02 00:42:01,086 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:42:01,086 INFO L402 BasicCegarLoop]: trace histogram [103, 103, 83, 51, 51, 51, 51, 51, 51, 51, 32, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:42:01,086 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:42:01,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:42:01,086 INFO L82 PathProgramCache]: Analyzing trace with hash -335801319, now seen corresponding path program 9 times [2018-12-02 00:42:01,086 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:42:01,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:42:01,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:01,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 00:42:01,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:42:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 29515 backedges. 525 proven. 3190 refuted. 0 times theorem prover too weak. 25800 trivial. 0 not checked. [2018-12-02 00:42:01,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:42:01,381 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:42:01,389 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 00:42:01,458 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2018-12-02 00:42:01,459 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 00:42:01,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:42:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 29515 backedges. 486 proven. 3745 refuted. 0 times theorem prover too weak. 25284 trivial. 0 not checked. [2018-12-02 00:42:01,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:42:01,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2018-12-02 00:42:01,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 00:42:01,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 00:42:01,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-12-02 00:42:01,644 INFO L87 Difference]: Start difference. First operand 80 states and 113 transitions. Second operand 12 states. [2018-12-02 00:42:01,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:42:01,777 INFO L93 Difference]: Finished difference Result 89 states and 133 transitions. [2018-12-02 00:42:01,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 00:42:01,777 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 708 [2018-12-02 00:42:01,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:42:01,780 INFO L225 Difference]: With dead ends: 89 [2018-12-02 00:42:01,780 INFO L226 Difference]: Without dead ends: 85 [2018-12-02 00:42:01,780 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2018-12-02 00:42:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-12-02 00:42:01,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-12-02 00:42:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-12-02 00:42:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 129 transitions. [2018-12-02 00:42:01,790 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 129 transitions. Word has length 708 [2018-12-02 00:42:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:42:01,792 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 129 transitions. [2018-12-02 00:42:01,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 00:42:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 129 transitions. [2018-12-02 00:42:01,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2018-12-02 00:42:01,801 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:42:01,801 INFO L402 BasicCegarLoop]: trace histogram [159, 159, 129, 79, 79, 79, 79, 79, 79, 79, 50, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:42:01,801 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:42:01,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:42:01,801 INFO L82 PathProgramCache]: Analyzing trace with hash -500857173, now seen corresponding path program 10 times [2018-12-02 00:42:01,802 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:42:01,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:42:01,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:01,802 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 00:42:01,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:42:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 70824 backedges. 4847 proven. 2178 refuted. 0 times theorem prover too weak. 63799 trivial. 0 not checked. [2018-12-02 00:42:02,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:42:02,329 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:42:02,335 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 00:42:02,443 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 00:42:02,443 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 00:42:02,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:42:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 70824 backedges. 1421 proven. 5597 refuted. 0 times theorem prover too weak. 63806 trivial. 0 not checked. [2018-12-02 00:42:02,854 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:42:02,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 17 [2018-12-02 00:42:02,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-02 00:42:02,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-02 00:42:02,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2018-12-02 00:42:02,856 INFO L87 Difference]: Start difference. First operand 85 states and 129 transitions. Second operand 17 states. [2018-12-02 00:42:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:42:03,020 INFO L93 Difference]: Finished difference Result 154 states and 493 transitions. [2018-12-02 00:42:03,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-02 00:42:03,021 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1090 [2018-12-02 00:42:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:42:03,022 INFO L225 Difference]: With dead ends: 154 [2018-12-02 00:42:03,022 INFO L226 Difference]: Without dead ends: 85 [2018-12-02 00:42:03,023 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1118 GetRequests, 1094 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=395, Unknown=0, NotChecked=0, Total=600 [2018-12-02 00:42:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-12-02 00:42:03,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-12-02 00:42:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-12-02 00:42:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 100 transitions. [2018-12-02 00:42:03,028 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 100 transitions. Word has length 1090 [2018-12-02 00:42:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:42:03,028 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 100 transitions. [2018-12-02 00:42:03,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-02 00:42:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 100 transitions. [2018-12-02 00:42:03,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2018-12-02 00:42:03,030 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:42:03,031 INFO L402 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:42:03,031 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:42:03,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:42:03,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1616877860, now seen corresponding path program 11 times [2018-12-02 00:42:03,031 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 00:42:03,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 00:42:03,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:03,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 00:42:03,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:42:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:42:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2018-12-02 00:42:03,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 00:42:03,767 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 00:42:03,772 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 00:42:04,030 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 93 check-sat command(s) [2018-12-02 00:42:04,030 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 00:42:04,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:42:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2018-12-02 00:42:04,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 00:42:04,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2018-12-02 00:42:04,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-02 00:42:04,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-02 00:42:04,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2018-12-02 00:42:04,746 INFO L87 Difference]: Start difference. First operand 85 states and 100 transitions. Second operand 36 states. [2018-12-02 00:42:05,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:42:05,011 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2018-12-02 00:42:05,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-02 00:42:05,011 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 749 [2018-12-02 00:42:05,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:42:05,012 INFO L225 Difference]: With dead ends: 85 [2018-12-02 00:42:05,012 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 00:42:05,013 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 880 SyntacticMatches, 55 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2018-12-02 00:42:05,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 00:42:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 00:42:05,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 00:42:05,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 00:42:05,013 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 749 [2018-12-02 00:42:05,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:42:05,013 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 00:42:05,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-02 00:42:05,013 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 00:42:05,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 00:42:05,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 00:42:05,658 WARN L180 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 65 [2018-12-02 00:42:05,660 INFO L448 ceAbstractionStarter]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2018-12-02 00:42:05,660 INFO L451 ceAbstractionStarter]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2018-12-02 00:42:05,660 INFO L444 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (<= |fibonacci_#in~n| fibonacci_~n) (<= 2 fibonacci_~n) (<= fibonacci_~n |fibonacci_#in~n|)) [2018-12-02 00:42:05,660 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-12-02 00:42:05,660 INFO L444 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse4 (<= |fibonacci_#t~ret0| 1)) (.cse5 (<= 1 |fibonacci_#t~ret0|)) (.cse1 (<= 3 fibonacci_~n)) (.cse8 (<= fibonacci_~n |fibonacci_#in~n|))) (let ((.cse0 (and (<= 5 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 6) (<= 6 |fibonacci_#in~n|) (<= |fibonacci_#t~ret0| 5) .cse8)) (.cse2 (and .cse1 (<= |fibonacci_#t~ret0| 2) (<= |fibonacci_#in~n| 4) (<= 2 |fibonacci_#t~ret0|) .cse8)) (.cse6 (<= |fibonacci_#in~n| 2)) (.cse3 (and (<= 5 |fibonacci_#in~n|) (<= 3 |fibonacci_#t~ret0|) (<= |fibonacci_#t~ret0| 3) (<= fibonacci_~n 5))) (.cse7 (and .cse4 (<= |fibonacci_#in~n| 3) .cse5 .cse1 .cse8))) (and (or (and (<= 13 |fibonacci_#t~ret0|) (<= 8 |fibonacci_#in~n|) (<= |fibonacci_#t~ret0| 13)) .cse0 (and .cse1 (<= |fibonacci_#t~ret0| 8) (<= 8 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 7)) .cse2 .cse3 (and .cse4 .cse5 .cse6) .cse7 (<= 9 |fibonacci_#in~n|)) (or .cse0 .cse2 (and (<= 7 |fibonacci_#in~n|) .cse8) (and .cse6 (<= 2 fibonacci_~n) .cse8) .cse3 .cse7) (or (<= |fibonacci_#in~n| 8) (and (<= |fibonacci_#t~ret0| 21) (<= 21 |fibonacci_#t~ret0|)) (<= 10 |fibonacci_#in~n|)) (or (< |fibonacci_#in~n| 3) (and (<= 4 |fibonacci_#in~n|) (<= |fibonacci_#in~n| fibonacci_~n)) .cse7)))) [2018-12-02 00:42:05,660 INFO L448 ceAbstractionStarter]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2018-12-02 00:42:05,661 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2018-12-02 00:42:05,661 INFO L448 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2018-12-02 00:42:05,661 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2018-12-02 00:42:05,661 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-02 00:42:05,661 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 00:42:05,661 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 00:42:05,661 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 00:42:05,661 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 00:42:05,661 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 00:42:05,661 INFO L448 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2018-12-02 00:42:05,661 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 25 33) the Hoare annotation is: true [2018-12-02 00:42:05,661 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 25 33) no Hoare annotation was computed. [2018-12-02 00:42:05,661 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 32) no Hoare annotation was computed. [2018-12-02 00:42:05,661 INFO L444 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= 9 main_~x~0) (<= main_~x~0 9)) [2018-12-02 00:42:05,661 INFO L448 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2018-12-02 00:42:05,662 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 25 33) no Hoare annotation was computed. [2018-12-02 00:42:05,662 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 31) no Hoare annotation was computed. [2018-12-02 00:42:05,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:42:05 BoogieIcfgContainer [2018-12-02 00:42:05,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 00:42:05,664 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 00:42:05,664 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 00:42:05,664 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 00:42:05,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:41:58" (3/4) ... [2018-12-02 00:42:05,667 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 00:42:05,672 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2018-12-02 00:42:05,672 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 00:42:05,672 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 00:42:05,674 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-02 00:42:05,675 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-02 00:42:05,675 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 00:42:05,698 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b1736495-2671-4246-8767-b8d1d8348e26/bin-2019/uautomizer/witness.graphml [2018-12-02 00:42:05,698 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 00:42:05,699 INFO L168 Benchmark]: Toolchain (without parser) took 7780.98 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 889.7 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -141.3 MB). Peak memory consumption was 748.4 MB. Max. memory is 11.5 GB. [2018-12-02 00:42:05,700 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:42:05,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 114.03 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 00:42:05,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.42 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:42:05,700 INFO L168 Benchmark]: Boogie Preprocessor took 9.99 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:42:05,700 INFO L168 Benchmark]: RCFGBuilder took 139.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -153.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-02 00:42:05,701 INFO L168 Benchmark]: TraceAbstraction took 7468.54 ms. Allocated memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: 779.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 781.4 MB. Max. memory is 11.5 GB. [2018-12-02 00:42:05,701 INFO L168 Benchmark]: Witness Printer took 34.41 ms. Allocated memory is still 1.9 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:42:05,703 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 114.03 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.42 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.99 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 139.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -153.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7468.54 ms. Allocated memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: 779.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 781.4 MB. Max. memory is 11.5 GB. * Witness Printer took 34.41 ms. Allocated memory is still 1.9 GB. Free memory is still 1.1 GB. There was no memory consumed. 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. SAFE Result, 7.4s OverallTime, 14 OverallIterations, 159 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 297 SDtfs, 373 SDslu, 1864 SDs, 0 SdLazy, 2062 SolverSat, 402 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4026 GetRequests, 3749 SyntacticMatches, 57 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 24 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 119 PreInvPairs, 455 NumberOfFragments, 242 HoareAnnotationTreeSize, 119 FomulaSimplifications, 3672 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2284 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 7213 NumberOfCodeBlocks, 6535 NumberOfCodeBlocksAsserted, 181 NumberOfCheckSat, 7187 ConstructedInterpolants, 0 QuantifiedInterpolants, 9360749 SizeOfPredicates, 68 NumberOfNonLiveVariables, 6347 ConjunctsInSsa, 574 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 247530/288658 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...