./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/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 9918b49e0d76e4ce36b6a6760021b33460a8ae9b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 14:59:48,309 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 14:59:48,310 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 14:59:48,316 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 14:59:48,316 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 14:59:48,317 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 14:59:48,318 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 14:59:48,319 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 14:59:48,320 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 14:59:48,321 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 14:59:48,321 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 14:59:48,321 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 14:59:48,322 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 14:59:48,323 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 14:59:48,323 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 14:59:48,324 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 14:59:48,324 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 14:59:48,326 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 14:59:48,327 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 14:59:48,328 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 14:59:48,329 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 14:59:48,329 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 14:59:48,331 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 14:59:48,331 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 14:59:48,331 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 14:59:48,332 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 14:59:48,333 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 14:59:48,333 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 14:59:48,334 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 14:59:48,335 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 14:59:48,335 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 14:59:48,335 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 14:59:48,335 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 14:59:48,336 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 14:59:48,336 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 14:59:48,336 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 14:59:48,336 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 14:59:48,343 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 14:59:48,343 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 14:59:48,344 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 14:59:48,344 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 14:59:48,344 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 14:59:48,344 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 14:59:48,344 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 14:59:48,344 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 14:59:48,345 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 14:59:48,345 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 14:59:48,346 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 14:59:48,346 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 14:59:48,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 14:59:48,346 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 14:59:48,346 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 14:59:48,346 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 14:59:48,346 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 14:59:48,346 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 14:59:48,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 14:59:48,346 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_4051fd67-69b9-45ef-8346-26f63e92308d/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 -> 9918b49e0d76e4ce36b6a6760021b33460a8ae9b [2018-11-23 14:59:48,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 14:59:48,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 14:59:48,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 14:59:48,383 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 14:59:48,384 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 14:59:48,384 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-11-23 14:59:48,429 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/data/7d22dc94b/380edfdf784240818432c88850c789a7/FLAG3f50a52ab [2018-11-23 14:59:48,829 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 14:59:48,829 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-11-23 14:59:48,833 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/data/7d22dc94b/380edfdf784240818432c88850c789a7/FLAG3f50a52ab [2018-11-23 14:59:48,843 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/data/7d22dc94b/380edfdf784240818432c88850c789a7 [2018-11-23 14:59:48,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 14:59:48,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 14:59:48,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 14:59:48,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 14:59:48,849 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 14:59:48,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:59:48" (1/1) ... [2018-11-23 14:59:48,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc0002c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48, skipping insertion in model container [2018-11-23 14:59:48,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:59:48" (1/1) ... [2018-11-23 14:59:48,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 14:59:48,870 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 14:59:48,977 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 14:59:48,979 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 14:59:48,990 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 14:59:48,998 INFO L195 MainTranslator]: Completed translation [2018-11-23 14:59:48,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48 WrapperNode [2018-11-23 14:59:48,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 14:59:48,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 14:59:48,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 14:59:48,999 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 14:59:49,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48" (1/1) ... [2018-11-23 14:59:49,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48" (1/1) ... [2018-11-23 14:59:49,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 14:59:49,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 14:59:49,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 14:59:49,010 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 14:59:49,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48" (1/1) ... [2018-11-23 14:59:49,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48" (1/1) ... [2018-11-23 14:59:49,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48" (1/1) ... [2018-11-23 14:59:49,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48" (1/1) ... [2018-11-23 14:59:49,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48" (1/1) ... [2018-11-23 14:59:49,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48" (1/1) ... [2018-11-23 14:59:49,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48" (1/1) ... [2018-11-23 14:59:49,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 14:59:49,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 14:59:49,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 14:59:49,023 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 14:59:49,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 14:59:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 14:59:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 14:59:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 14:59:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 14:59:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 14:59:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 14:59:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 14:59:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 14:59:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2018-11-23 14:59:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2018-11-23 14:59:49,205 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 14:59:49,206 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 14:59:49,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:49 BoogieIcfgContainer [2018-11-23 14:59:49,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 14:59:49,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 14:59:49,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 14:59:49,209 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 14:59:49,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:59:48" (1/3) ... [2018-11-23 14:59:49,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8a368d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:49, skipping insertion in model container [2018-11-23 14:59:49,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:48" (2/3) ... [2018-11-23 14:59:49,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8a368d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:49, skipping insertion in model container [2018-11-23 14:59:49,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:49" (3/3) ... [2018-11-23 14:59:49,212 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-11-23 14:59:49,219 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 14:59:49,223 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 14:59:49,235 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 14:59:49,260 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 14:59:49,260 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 14:59:49,261 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 14:59:49,261 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 14:59:49,261 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 14:59:49,261 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 14:59:49,261 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 14:59:49,261 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 14:59:49,261 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 14:59:49,275 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-11-23 14:59:49,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 14:59:49,280 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:49,281 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:49,283 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:49,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:49,287 INFO L82 PathProgramCache]: Analyzing trace with hash 876608673, now seen corresponding path program 1 times [2018-11-23 14:59:49,289 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:49,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:49,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:49,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:49,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:49,349 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:49,349 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:49,349 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:49,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:59:49,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:49,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:59:49,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 14:59:49,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 14:59:49,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 14:59:49,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 14:59:49,449 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2018-11-23 14:59:49,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:49,517 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2018-11-23 14:59:49,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 14:59:49,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-23 14:59:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:49,526 INFO L225 Difference]: With dead ends: 60 [2018-11-23 14:59:49,526 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 14:59:49,529 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 14:59:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 14:59:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2018-11-23 14:59:49,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-23 14:59:49,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2018-11-23 14:59:49,556 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 17 [2018-11-23 14:59:49,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:49,557 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2018-11-23 14:59:49,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 14:59:49,557 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2018-11-23 14:59:49,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 14:59:49,558 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:49,558 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:49,559 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:49,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:49,559 INFO L82 PathProgramCache]: Analyzing trace with hash 483581663, now seen corresponding path program 1 times [2018-11-23 14:59:49,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:49,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:49,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:49,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:49,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:49,566 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:49,566 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:49,567 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:49,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:59:49,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:49,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:59:49,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 14:59:49,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 14:59:49,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 14:59:49,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 14:59:49,640 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 5 states. [2018-11-23 14:59:49,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:49,670 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-11-23 14:59:49,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 14:59:49,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-23 14:59:49,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:49,672 INFO L225 Difference]: With dead ends: 42 [2018-11-23 14:59:49,672 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 14:59:49,673 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 14:59:49,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 14:59:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2018-11-23 14:59:49,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-23 14:59:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2018-11-23 14:59:49,677 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 17 [2018-11-23 14:59:49,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:49,677 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2018-11-23 14:59:49,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 14:59:49,678 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2018-11-23 14:59:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 14:59:49,678 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:49,678 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:49,678 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:49,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:49,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1158269966, now seen corresponding path program 1 times [2018-11-23 14:59:49,679 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:49,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:49,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:49,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:49,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:49,684 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:49,684 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:49,684 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:49,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:59:49,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:49,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:59:49,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 14:59:49,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 14:59:49,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 14:59:49,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 14:59:49,769 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2018-11-23 14:59:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:49,803 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2018-11-23 14:59:49,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 14:59:49,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-23 14:59:49,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:49,804 INFO L225 Difference]: With dead ends: 46 [2018-11-23 14:59:49,804 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 14:59:49,804 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 14:59:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 14:59:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2018-11-23 14:59:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-23 14:59:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-23 14:59:49,808 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 19 [2018-11-23 14:59:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:49,809 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-23 14:59:49,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 14:59:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-11-23 14:59:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 14:59:49,809 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:49,809 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:49,809 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:49,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:49,810 INFO L82 PathProgramCache]: Analyzing trace with hash -457205388, now seen corresponding path program 1 times [2018-11-23 14:59:49,810 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:49,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:49,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:49,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:49,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:49,815 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:49,815 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:49,815 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:49,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:59:49,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:49,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:59:49,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 14:59:49,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 14:59:49,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 14:59:49,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 14:59:49,872 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2018-11-23 14:59:49,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:49,894 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-11-23 14:59:49,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 14:59:49,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-23 14:59:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:49,895 INFO L225 Difference]: With dead ends: 40 [2018-11-23 14:59:49,896 INFO L226 Difference]: Without dead ends: 27 [2018-11-23 14:59:49,896 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 14:59:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-23 14:59:49,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-23 14:59:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 14:59:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2018-11-23 14:59:49,900 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 19 [2018-11-23 14:59:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:49,900 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2018-11-23 14:59:49,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 14:59:49,901 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2018-11-23 14:59:49,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 14:59:49,901 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:49,901 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:49,901 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:49,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:49,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1431348209, now seen corresponding path program 1 times [2018-11-23 14:59:49,902 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:49,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:49,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:49,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:49,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:49,908 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:49,908 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:49,908 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:49,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:59:49,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:49,967 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 14:59:49,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-11-23 14:59:49,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 14:59:49,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 14:59:49,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-23 14:59:49,967 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 6 states. [2018-11-23 14:59:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:50,029 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2018-11-23 14:59:50,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 14:59:50,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-11-23 14:59:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:50,030 INFO L225 Difference]: With dead ends: 46 [2018-11-23 14:59:50,030 INFO L226 Difference]: Without dead ends: 29 [2018-11-23 14:59:50,030 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-23 14:59:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-23 14:59:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-23 14:59:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-23 14:59:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-11-23 14:59:50,034 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 21 [2018-11-23 14:59:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:50,034 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-11-23 14:59:50,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 14:59:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-11-23 14:59:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 14:59:50,035 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:50,035 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:50,035 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:50,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1537894100, now seen corresponding path program 1 times [2018-11-23 14:59:50,035 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:50,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:50,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:50,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:50,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:50,040 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:50,040 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:50,040 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:50,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:59:50,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:50,137 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 14:59:50,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-11-23 14:59:50,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 14:59:50,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 14:59:50,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-23 14:59:50,138 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 7 states. [2018-11-23 14:59:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:50,209 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2018-11-23 14:59:50,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 14:59:50,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-23 14:59:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:50,213 INFO L225 Difference]: With dead ends: 48 [2018-11-23 14:59:50,213 INFO L226 Difference]: Without dead ends: 31 [2018-11-23 14:59:50,213 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-23 14:59:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-23 14:59:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-23 14:59:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-23 14:59:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2018-11-23 14:59:50,219 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 23 [2018-11-23 14:59:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:50,219 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2018-11-23 14:59:50,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 14:59:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2018-11-23 14:59:50,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 14:59:50,220 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:50,220 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:50,220 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:50,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:50,220 INFO L82 PathProgramCache]: Analyzing trace with hash -849280247, now seen corresponding path program 2 times [2018-11-23 14:59:50,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:50,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:50,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:50,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:50,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:50,229 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:50,229 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:50,229 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:50,247 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 14:59:50,256 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 14:59:50,257 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 14:59:50,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:50,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 14:59:50,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-11-23 14:59:50,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 14:59:50,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 14:59:50,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-23 14:59:50,348 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 8 states. [2018-11-23 14:59:50,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:50,431 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2018-11-23 14:59:50,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 14:59:50,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-23 14:59:50,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:50,432 INFO L225 Difference]: With dead ends: 50 [2018-11-23 14:59:50,432 INFO L226 Difference]: Without dead ends: 33 [2018-11-23 14:59:50,433 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-23 14:59:50,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-23 14:59:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-23 14:59:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-23 14:59:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-23 14:59:50,436 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 25 [2018-11-23 14:59:50,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:50,436 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-23 14:59:50,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 14:59:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-23 14:59:50,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 14:59:50,437 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:50,437 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:50,438 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:50,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:50,438 INFO L82 PathProgramCache]: Analyzing trace with hash -516331098, now seen corresponding path program 3 times [2018-11-23 14:59:50,438 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:50,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:50,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:50,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 14:59:50,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:50,444 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:50,444 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:50,444 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:50,450 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 14:59:50,459 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-23 14:59:50,459 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 14:59:50,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:50,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 14:59:50,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-23 14:59:50,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 14:59:50,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 14:59:50,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-23 14:59:50,543 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-11-23 14:59:50,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:50,638 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2018-11-23 14:59:50,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 14:59:50,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-11-23 14:59:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:50,642 INFO L225 Difference]: With dead ends: 52 [2018-11-23 14:59:50,642 INFO L226 Difference]: Without dead ends: 35 [2018-11-23 14:59:50,642 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-11-23 14:59:50,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-23 14:59:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-23 14:59:50,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-23 14:59:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2018-11-23 14:59:50,647 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 27 [2018-11-23 14:59:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:50,647 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2018-11-23 14:59:50,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 14:59:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2018-11-23 14:59:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 14:59:50,648 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:50,648 INFO L402 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:50,648 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:50,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:50,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1878386625, now seen corresponding path program 4 times [2018-11-23 14:59:50,649 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:50,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:50,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:50,650 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 14:59:50,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:50,656 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:50,657 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:50,657 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:50,665 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 14:59:50,675 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 14:59:50,675 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 14:59:50,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:50,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 14:59:50,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-11-23 14:59:50,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 14:59:50,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 14:59:50,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-23 14:59:50,836 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 15 states. [2018-11-23 14:59:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:51,047 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2018-11-23 14:59:51,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 14:59:51,047 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2018-11-23 14:59:51,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:51,048 INFO L225 Difference]: With dead ends: 52 [2018-11-23 14:59:51,048 INFO L226 Difference]: Without dead ends: 39 [2018-11-23 14:59:51,049 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-11-23 14:59:51,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-23 14:59:51,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-11-23 14:59:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-23 14:59:51,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-11-23 14:59:51,054 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 29 [2018-11-23 14:59:51,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:51,054 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-11-23 14:59:51,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 14:59:51,055 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-11-23 14:59:51,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 14:59:51,055 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:51,055 INFO L402 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:51,056 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:51,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:51,056 INFO L82 PathProgramCache]: Analyzing trace with hash 841482334, now seen corresponding path program 5 times [2018-11-23 14:59:51,056 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:51,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:51,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:51,057 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 14:59:51,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:51,063 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:51,063 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:51,063 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:51,077 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 14:59:51,085 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-11-23 14:59:51,086 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 14:59:51,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:51,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 14:59:51,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-11-23 14:59:51,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 14:59:51,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 14:59:51,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-23 14:59:51,195 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 11 states. [2018-11-23 14:59:51,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:51,326 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2018-11-23 14:59:51,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 14:59:51,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2018-11-23 14:59:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:51,327 INFO L225 Difference]: With dead ends: 57 [2018-11-23 14:59:51,327 INFO L226 Difference]: Without dead ends: 40 [2018-11-23 14:59:51,328 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-11-23 14:59:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-23 14:59:51,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-23 14:59:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-23 14:59:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2018-11-23 14:59:51,331 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 31 [2018-11-23 14:59:51,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:51,331 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2018-11-23 14:59:51,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 14:59:51,331 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2018-11-23 14:59:51,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 14:59:51,332 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:51,332 INFO L402 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:51,332 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:51,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:51,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1492674782, now seen corresponding path program 6 times [2018-11-23 14:59:51,332 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:51,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:51,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:51,333 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 14:59:51,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:59:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-23 14:59:51,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:59:51,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 14:59:51,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 14:59:51,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 14:59:51,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:59:51,368 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 3 states. [2018-11-23 14:59:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:51,384 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2018-11-23 14:59:51,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 14:59:51,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-11-23 14:59:51,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:51,387 INFO L225 Difference]: With dead ends: 55 [2018-11-23 14:59:51,388 INFO L226 Difference]: Without dead ends: 42 [2018-11-23 14:59:51,388 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:59:51,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-23 14:59:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-11-23 14:59:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-23 14:59:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-23 14:59:51,393 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 31 [2018-11-23 14:59:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:51,393 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-23 14:59:51,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 14:59:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-23 14:59:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 14:59:51,394 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:51,394 INFO L402 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:51,394 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:51,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:51,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1099647772, now seen corresponding path program 7 times [2018-11-23 14:59:51,394 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:51,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:51,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:51,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 14:59:51,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:51,400 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:51,400 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:51,400 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:51,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:59:51,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:51,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 14:59:51,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-11-23 14:59:51,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 14:59:51,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 14:59:51,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-23 14:59:51,623 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 11 states. [2018-11-23 14:59:51,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:51,839 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-23 14:59:51,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 14:59:51,840 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2018-11-23 14:59:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:51,840 INFO L225 Difference]: With dead ends: 59 [2018-11-23 14:59:51,840 INFO L226 Difference]: Without dead ends: 40 [2018-11-23 14:59:51,841 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-11-23 14:59:51,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-23 14:59:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-23 14:59:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-23 14:59:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-11-23 14:59:51,845 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 31 [2018-11-23 14:59:51,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:51,845 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-11-23 14:59:51,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 14:59:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-11-23 14:59:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-23 14:59:51,846 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:51,846 INFO L402 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:51,846 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:51,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:51,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1067036793, now seen corresponding path program 8 times [2018-11-23 14:59:51,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:51,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:51,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:51,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:59:51,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:51,851 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:51,851 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:51,851 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:51,858 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 14:59:51,864 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 14:59:51,865 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 14:59:51,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 14:59:51,953 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 14:59:51,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-23 14:59:51,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 14:59:51,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 14:59:51,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-23 14:59:51,954 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2018-11-23 14:59:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:52,048 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2018-11-23 14:59:52,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 14:59:52,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-11-23 14:59:52,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:52,049 INFO L225 Difference]: With dead ends: 56 [2018-11-23 14:59:52,049 INFO L226 Difference]: Without dead ends: 38 [2018-11-23 14:59:52,050 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-23 14:59:52,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-23 14:59:52,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-23 14:59:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-23 14:59:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-11-23 14:59:52,055 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 33 [2018-11-23 14:59:52,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:52,055 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-11-23 14:59:52,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 14:59:52,055 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-11-23 14:59:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-23 14:59:52,055 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:52,056 INFO L402 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:52,056 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:52,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:52,056 INFO L82 PathProgramCache]: Analyzing trace with hash -202245895, now seen corresponding path program 9 times [2018-11-23 14:59:52,056 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:52,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:52,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:52,057 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 14:59:52,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:52,062 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:52,062 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:52,062 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:52,071 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 14:59:52,081 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-11-23 14:59:52,081 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 14:59:52,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 14:59:52,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 14:59:52,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-11-23 14:59:52,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 14:59:52,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 14:59:52,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-23 14:59:52,178 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 10 states. [2018-11-23 14:59:52,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:59:52,393 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2018-11-23 14:59:52,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 14:59:52,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2018-11-23 14:59:52,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 14:59:52,394 INFO L225 Difference]: With dead ends: 56 [2018-11-23 14:59:52,394 INFO L226 Difference]: Without dead ends: 43 [2018-11-23 14:59:52,394 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-11-23 14:59:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-23 14:59:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-11-23 14:59:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-23 14:59:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-11-23 14:59:52,397 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 33 [2018-11-23 14:59:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 14:59:52,397 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-11-23 14:59:52,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 14:59:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-11-23 14:59:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-23 14:59:52,398 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 14:59:52,398 INFO L402 BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:59:52,400 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 14:59:52,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:59:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1486576746, now seen corresponding path program 10 times [2018-11-23 14:59:52,400 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:59:52,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:59:52,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:52,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 14:59:52,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:59:52,406 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 14:59:52,406 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 14:59:52,406 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 14:59:52,418 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 14:59:52,444 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 14:59:52,444 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 14:59:52,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:59:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:59:53,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 14:59:53,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-11-23 14:59:53,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 14:59:53,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 14:59:53,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=132, Unknown=1, NotChecked=0, Total=156 [2018-11-23 14:59:53,297 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 13 states. [2018-11-23 15:00:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:00:03,786 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-11-23 15:00:03,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 15:00:03,787 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2018-11-23 15:00:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:00:03,788 INFO L225 Difference]: With dead ends: 58 [2018-11-23 15:00:03,788 INFO L226 Difference]: Without dead ends: 45 [2018-11-23 15:00:03,789 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=55, Invalid=283, Unknown=4, NotChecked=0, Total=342 [2018-11-23 15:00:03,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-23 15:00:03,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2018-11-23 15:00:03,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-23 15:00:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2018-11-23 15:00:03,794 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 35 [2018-11-23 15:00:03,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:00:03,795 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2018-11-23 15:00:03,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 15:00:03,795 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2018-11-23 15:00:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-23 15:00:03,795 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:00:03,795 INFO L402 BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:00:03,795 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:00:03,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:00:03,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1228411308, now seen corresponding path program 11 times [2018-11-23 15:00:03,796 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:00:03,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:00:03,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:00:03,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:00:03,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:00:03,804 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 15:00:03,804 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 15:00:03,804 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 15:00:03,822 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 15:00:03,830 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-11-23 15:00:03,831 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 15:00:03,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:00:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:00:04,046 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:00:04,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-11-23 15:00:04,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 15:00:04,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 15:00:04,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-23 15:00:04,046 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 13 states. [2018-11-23 15:00:04,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:00:04,343 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-23 15:00:04,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 15:00:04,343 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2018-11-23 15:00:04,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:00:04,344 INFO L225 Difference]: With dead ends: 63 [2018-11-23 15:00:04,344 INFO L226 Difference]: Without dead ends: 44 [2018-11-23 15:00:04,344 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2018-11-23 15:00:04,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-23 15:00:04,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-23 15:00:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-23 15:00:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2018-11-23 15:00:04,350 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 35 [2018-11-23 15:00:04,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:00:04,351 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2018-11-23 15:00:04,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 15:00:04,351 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2018-11-23 15:00:04,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-23 15:00:04,351 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:00:04,351 INFO L402 BasicCegarLoop]: trace histogram [9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:00:04,352 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:00:04,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:00:04,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1222056691, now seen corresponding path program 12 times [2018-11-23 15:00:04,352 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:00:04,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:00:04,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:00:04,353 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:00:04,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:00:04,357 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-23 15:00:04,357 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-23 15:00:04,357 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-23 15:00:04,373 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 15:00:04,389 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-11-23 15:00:04,389 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 15:00:04,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:00:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 66 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 15:00:04,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:00:04,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-11-23 15:00:04,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 15:00:04,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 15:00:04,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-11-23 15:00:04,534 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 12 states. [2018-11-23 15:00:04,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:00:04,717 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2018-11-23 15:00:04,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 15:00:04,718 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2018-11-23 15:00:04,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:00:04,718 INFO L225 Difference]: With dead ends: 46 [2018-11-23 15:00:04,718 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 15:00:04,719 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-11-23 15:00:04,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 15:00:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 15:00:04,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 15:00:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 15:00:04,719 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-11-23 15:00:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:00:04,719 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:00:04,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 15:00:04,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:00:04,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 15:00:04,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 15:00:27,677 WARN L180 SmtUtils]: Spent 22.83 s on a formula simplification. DAG size of input: 209 DAG size of output: 92 [2018-11-23 15:00:27,679 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 15:00:27,679 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:00:27,679 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:00:27,679 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 15:00:27,679 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 15:00:27,679 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 15:00:27,679 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 30 46) the Hoare annotation is: true [2018-11-23 15:00:27,679 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 30 46) no Hoare annotation was computed. [2018-11-23 15:00:27,679 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-23 15:00:27,679 INFO L444 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (and (= (* 2 main_~g~0) 18) (= main_~y~0 18) (= (* 7 main_~g~0) main_~x~0)) [2018-11-23 15:00:27,679 INFO L444 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: (and (= (* 2 main_~g~0) 18) (= main_~y~0 18) (= (* 7 main_~g~0) main_~x~0)) [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 30 46) no Hoare annotation was computed. [2018-11-23 15:00:27,680 INFO L444 ceAbstractionStarter]: At program point L41-1(line 41) the Hoare annotation is: (and (= (* 2 main_~g~0) 18) (= main_~y~0 18) (= (* 7 main_~g~0) main_~x~0)) [2018-11-23 15:00:27,680 INFO L444 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (and (= main_~y~0 18) (= main_~x~0 63)) [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed. [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-11-23 15:00:27,680 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point gcd_testEXIT(lines 10 27) no Hoare annotation was computed. [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point L13-1(lines 11 27) no Hoare annotation was computed. [2018-11-23 15:00:27,680 INFO L451 ceAbstractionStarter]: At program point gcd_testENTRY(lines 10 27) the Hoare annotation is: true [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-11-23 15:00:27,680 INFO L444 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse0 (<= 1 gcd_test_~a)) (.cse1 (= gcd_test_~b |gcd_test_#in~b|))) (or (and .cse0 (exists ((v_gcd_test_~b_32 Int)) (and (<= (+ gcd_test_~b (* 2 |gcd_test_#in~a|) 1) (* 7 v_gcd_test_~b_32)) (<= v_gcd_test_~b_32 |gcd_test_#in~b|)))) (exists ((v_gcd_test_~a_31 Int) (v_gcd_test_~b_23 Int)) (and (<= (+ v_gcd_test_~b_23 1) (* 2 v_gcd_test_~a_31)) (<= (+ v_gcd_test_~a_31 (* 3 v_gcd_test_~b_23)) |gcd_test_#in~a|) (<= |gcd_test_#in~b| v_gcd_test_~b_23))) (let ((.cse2 (+ (* 2 gcd_test_~b) gcd_test_~a))) (and .cse1 (<= |gcd_test_#in~a| .cse2) (<= .cse2 |gcd_test_#in~a|))) (and .cse0 (or (not (= gcd_test_~b 0)) (exists ((gcd_test_~a Int)) (= (+ gcd_test_~b (* 2 gcd_test_~a) (* 3 |gcd_test_#in~b|)) |gcd_test_#in~a|))) (exists ((v_gcd_test_~b_32 Int)) (and (<= (+ gcd_test_~b (* 2 |gcd_test_#in~a|)) (* 7 v_gcd_test_~b_32)) (<= v_gcd_test_~b_32 |gcd_test_#in~b|)))) (and (exists ((v_gcd_test_~b_23 Int)) (and (<= (+ gcd_test_~a (* 3 v_gcd_test_~b_23)) |gcd_test_#in~a|) (<= |gcd_test_#in~b| v_gcd_test_~b_23) (<= v_gcd_test_~b_23 (+ gcd_test_~b gcd_test_~a)))) (exists ((v_gcd_test_~b_25 Int)) (and (<= (+ gcd_test_~b gcd_test_~a) v_gcd_test_~b_25) (<= v_gcd_test_~b_25 |gcd_test_#in~b|) (<= |gcd_test_#in~a| (+ (* 3 v_gcd_test_~b_25) gcd_test_~a))))) (exists ((v_gcd_test_~b_25 Int)) (and (<= (+ gcd_test_~b (* 2 gcd_test_~a)) v_gcd_test_~b_25) (<= v_gcd_test_~b_25 |gcd_test_#in~b|) (<= |gcd_test_#in~a| (+ (* 3 v_gcd_test_~b_25) gcd_test_~a)))) (let ((.cse3 (+ gcd_test_~b gcd_test_~a))) (and .cse1 (<= |gcd_test_#in~a| .cse3) (<= .cse3 |gcd_test_#in~a|))) (and (= (+ gcd_test_~a (* 3 |gcd_test_#in~b|)) |gcd_test_#in~a|) (<= (+ (* 3 gcd_test_~b) gcd_test_~a) |gcd_test_#in~a|) (<= |gcd_test_#in~b| gcd_test_~b)) (and .cse1 (= gcd_test_~a |gcd_test_#in~a|)) (exists ((v_gcd_test_~b_28 Int) (v_gcd_test_~a_44 Int)) (let ((.cse4 (* 3 v_gcd_test_~b_28))) (and (<= (* 8 v_gcd_test_~a_44) .cse4) (<= |gcd_test_#in~a| (+ .cse4 v_gcd_test_~a_44)) (<= v_gcd_test_~b_28 |gcd_test_#in~b|)))))) [2018-11-23 15:00:27,680 INFO L448 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2018-11-23 15:00:27,681 INFO L448 ceAbstractionStarter]: For program point L12-2(lines 11 27) no Hoare annotation was computed. [2018-11-23 15:00:27,681 INFO L448 ceAbstractionStarter]: For program point gcd_testFINAL(lines 10 27) no Hoare annotation was computed. [2018-11-23 15:00:27,686 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,687 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,687 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,687 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] [2018-11-23 15:00:27,687 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] [2018-11-23 15:00:27,688 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,688 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,688 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] [2018-11-23 15:00:27,688 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,689 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,689 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,689 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,689 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,689 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-23 15:00:27,691 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] [2018-11-23 15:00:27,691 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] [2018-11-23 15:00:27,691 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-23 15:00:27,691 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] [2018-11-23 15:00:27,696 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,697 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,697 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,697 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] [2018-11-23 15:00:27,697 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] [2018-11-23 15:00:27,698 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,698 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,698 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] [2018-11-23 15:00:27,698 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,699 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,699 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,699 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,699 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,699 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,700 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,700 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,700 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,700 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,701 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,701 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-23 15:00:27,701 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] [2018-11-23 15:00:27,701 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] [2018-11-23 15:00:27,701 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-23 15:00:27,702 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] [2018-11-23 15:00:27,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:00:27 BoogieIcfgContainer [2018-11-23 15:00:27,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 15:00:27,705 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:00:27,705 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:00:27,705 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:00:27,705 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:49" (3/4) ... [2018-11-23 15:00:27,708 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 15:00:27,713 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 15:00:27,713 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 15:00:27,713 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 15:00:27,713 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd_test [2018-11-23 15:00:27,717 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-23 15:00:27,717 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 15:00:27,717 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 15:00:27,737 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((1 <= a && (\exists v_gcd_test_~b_32 : int :: b + 2 * \old(a) + 1 <= 7 * v_gcd_test_~b_32 && v_gcd_test_~b_32 <= \old(b))) || (\exists v_gcd_test_~a_31 : int, v_gcd_test_~b_23 : int :: (v_gcd_test_~b_23 + 1 <= 2 * v_gcd_test_~a_31 && v_gcd_test_~a_31 + 3 * v_gcd_test_~b_23 <= \old(a)) && \old(b) <= v_gcd_test_~b_23)) || ((b == \old(b) && \old(a) <= 2 * b + a) && 2 * b + a <= \old(a))) || ((1 <= a && (!(b == 0) || (\exists gcd_test_~a : int :: b + 2 * gcd_test_~a + 3 * \old(b) == \old(a)))) && (\exists v_gcd_test_~b_32 : int :: b + 2 * \old(a) <= 7 * v_gcd_test_~b_32 && v_gcd_test_~b_32 <= \old(b)))) || ((\exists v_gcd_test_~b_23 : int :: (a + 3 * v_gcd_test_~b_23 <= \old(a) && \old(b) <= v_gcd_test_~b_23) && v_gcd_test_~b_23 <= b + a) && (\exists v_gcd_test_~b_25 : int :: (b + a <= v_gcd_test_~b_25 && v_gcd_test_~b_25 <= \old(b)) && \old(a) <= 3 * v_gcd_test_~b_25 + a))) || (\exists v_gcd_test_~b_25 : int :: (b + 2 * a <= v_gcd_test_~b_25 && v_gcd_test_~b_25 <= \old(b)) && \old(a) <= 3 * v_gcd_test_~b_25 + a)) || ((b == \old(b) && \old(a) <= b + a) && b + a <= \old(a))) || ((a + 3 * \old(b) == \old(a) && 3 * b + a <= \old(a)) && \old(b) <= b)) || (b == \old(b) && a == \old(a))) || (\exists v_gcd_test_~b_28 : int, v_gcd_test_~a_44 : int :: (8 * v_gcd_test_~a_44 <= 3 * v_gcd_test_~b_28 && \old(a) <= 3 * v_gcd_test_~b_28 + v_gcd_test_~a_44) && v_gcd_test_~b_28 <= \old(b)) [2018-11-23 15:00:27,748 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4051fd67-69b9-45ef-8346-26f63e92308d/bin-2019/uautomizer/witness.graphml [2018-11-23 15:00:27,748 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:00:27,749 INFO L168 Benchmark]: Toolchain (without parser) took 38903.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.6 MB). Free memory was 959.3 MB in the beginning and 880.2 MB in the end (delta: 79.0 MB). Peak memory consumption was 254.6 MB. Max. memory is 11.5 GB. [2018-11-23 15:00:27,750 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:00:27,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:00:27,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.63 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:00:27,751 INFO L168 Benchmark]: Boogie Preprocessor took 12.03 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:00:27,751 INFO L168 Benchmark]: RCFGBuilder took 183.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 15:00:27,751 INFO L168 Benchmark]: TraceAbstraction took 38497.38 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.3 MB). Free memory was 1.1 GB in the beginning and 884.8 MB in the end (delta: 237.3 MB). Peak memory consumption was 276.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:00:27,752 INFO L168 Benchmark]: Witness Printer took 43.95 ms. Allocated memory is still 1.2 GB. Free memory was 884.8 MB in the beginning and 880.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 11.5 GB. [2018-11-23 15:00:27,754 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 151.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 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 11.63 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.03 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 183.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 38497.38 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.3 MB). Free memory was 1.1 GB in the beginning and 884.8 MB in the end (delta: 237.3 MB). Peak memory consumption was 276.7 MB. Max. memory is 11.5 GB. * Witness Printer took 43.95 ms. Allocated memory is still 1.2 GB. Free memory was 884.8 MB in the beginning and 880.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2018-11-23 15:00:27,758 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,758 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,758 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,759 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] [2018-11-23 15:00:27,759 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] [2018-11-23 15:00:27,759 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,759 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,759 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] [2018-11-23 15:00:27,759 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,760 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,760 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,760 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,760 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,760 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,760 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,761 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,761 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,761 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,761 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,761 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-23 15:00:27,761 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] [2018-11-23 15:00:27,762 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] [2018-11-23 15:00:27,762 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-23 15:00:27,762 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] [2018-11-23 15:00:27,763 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,763 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,763 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,763 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] [2018-11-23 15:00:27,764 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_31,QUANTIFIED] [2018-11-23 15:00:27,764 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,764 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,764 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] [2018-11-23 15:00:27,764 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,764 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_32,QUANTIFIED] [2018-11-23 15:00:27,773 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,773 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,773 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-23 15:00:27,773 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,773 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,774 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,774 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,774 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,774 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_25,QUANTIFIED] [2018-11-23 15:00:27,774 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-23 15:00:27,774 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] [2018-11-23 15:00:27,774 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] [2018-11-23 15:00:27,775 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-23 15:00:27,775 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_28,QUANTIFIED] Derived loop invariant: (((((((((1 <= a && (\exists v_gcd_test_~b_32 : int :: b + 2 * \old(a) + 1 <= 7 * v_gcd_test_~b_32 && v_gcd_test_~b_32 <= \old(b))) || (\exists v_gcd_test_~a_31 : int, v_gcd_test_~b_23 : int :: (v_gcd_test_~b_23 + 1 <= 2 * v_gcd_test_~a_31 && v_gcd_test_~a_31 + 3 * v_gcd_test_~b_23 <= \old(a)) && \old(b) <= v_gcd_test_~b_23)) || ((b == \old(b) && \old(a) <= 2 * b + a) && 2 * b + a <= \old(a))) || ((1 <= a && (!(b == 0) || (\exists gcd_test_~a : int :: b + 2 * gcd_test_~a + 3 * \old(b) == \old(a)))) && (\exists v_gcd_test_~b_32 : int :: b + 2 * \old(a) <= 7 * v_gcd_test_~b_32 && v_gcd_test_~b_32 <= \old(b)))) || ((\exists v_gcd_test_~b_23 : int :: (a + 3 * v_gcd_test_~b_23 <= \old(a) && \old(b) <= v_gcd_test_~b_23) && v_gcd_test_~b_23 <= b + a) && (\exists v_gcd_test_~b_25 : int :: (b + a <= v_gcd_test_~b_25 && v_gcd_test_~b_25 <= \old(b)) && \old(a) <= 3 * v_gcd_test_~b_25 + a))) || (\exists v_gcd_test_~b_25 : int :: (b + 2 * a <= v_gcd_test_~b_25 && v_gcd_test_~b_25 <= \old(b)) && \old(a) <= 3 * v_gcd_test_~b_25 + a)) || ((b == \old(b) && \old(a) <= b + a) && b + a <= \old(a))) || ((a + 3 * \old(b) == \old(a) && 3 * b + a <= \old(a)) && \old(b) <= b)) || (b == \old(b) && a == \old(a))) || (\exists v_gcd_test_~b_28 : int, v_gcd_test_~a_44 : int :: (8 * v_gcd_test_~a_44 <= 3 * v_gcd_test_~b_28 && \old(a) <= 3 * v_gcd_test_~b_28 + v_gcd_test_~a_44) && v_gcd_test_~b_28 <= \old(b)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. SAFE Result, 38.4s OverallTime, 17 OverallIterations, 9 TraceHistogramMax, 12.3s AutomataDifference, 0.0s DeadEndRemovalTime, 22.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 361 SDtfs, 191 SDslu, 1909 SDs, 0 SdLazy, 1973 SolverSat, 63 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 7.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 460 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=16, 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, 17 MinimizatonAttempts, 26 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 61 PreInvPairs, 98 NumberOfFragments, 258 HoareAnnotationTreeSize, 61 FomulaSimplifications, 2600 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 637 FormulaSimplificationTreeSizeReductionInter, 22.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 463 NumberOfCodeBlocks, 459 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 446 ConstructedInterpolants, 76 QuantifiedInterpolants, 88968 SizeOfPredicates, 56 NumberOfNonLiveVariables, 1014 ConjunctsInSsa, 195 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 61/470 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...