./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/recursive/gcd02_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/gcd02_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ba31a8852254650e4ff6b6614669c496c01110f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:44:30,160 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:44:30,161 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:44:30,167 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:44:30,167 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:44:30,168 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:44:30,169 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:44:30,170 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:44:30,171 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:44:30,172 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:44:30,172 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:44:30,173 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:44:30,173 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:44:30,175 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:44:30,175 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:44:30,176 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:44:30,176 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:44:30,178 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:44:30,179 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:44:30,180 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:44:30,180 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:44:30,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:44:30,183 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:44:30,183 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:44:30,183 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:44:30,184 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:44:30,185 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:44:30,185 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:44:30,186 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:44:30,186 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:44:30,187 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:44:30,187 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:44:30,187 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:44:30,187 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:44:30,188 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:44:30,188 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:44:30,188 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-11-18 09:44:30,198 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:44:30,198 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:44:30,199 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:44:30,199 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:44:30,199 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:44:30,199 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:44:30,199 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:44:30,200 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:44:30,200 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:44:30,200 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 09:44:30,200 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:44:30,200 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:44:30,200 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:44:30,200 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:44:30,201 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:44:30,201 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:44:30,201 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 09:44:30,201 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:44:30,201 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:44:30,201 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:44:30,201 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:44:30,202 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:44:30,202 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:44:30,202 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:44:30,202 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:44:30,202 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:44:30,202 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:44:30,202 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:44:30,202 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:44:30,203 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:44:30,203 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:44:30,203 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 09:44:30,203 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_a9a374ac-5fce-425a-ae1b-c23e357cd59b/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 ! overflow) ) 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 -> 4ba31a8852254650e4ff6b6614669c496c01110f [2018-11-18 09:44:30,227 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:44:30,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:44:30,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:44:30,240 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:44:30,241 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:44:30,241 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/gcd02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 09:44:30,282 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/data/219bbc619/2d814ba284e945059c94a36ae0075712/FLAGb94d15ff3 [2018-11-18 09:44:30,685 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:44:30,685 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/sv-benchmarks/c/recursive/gcd02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 09:44:30,690 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/data/219bbc619/2d814ba284e945059c94a36ae0075712/FLAGb94d15ff3 [2018-11-18 09:44:30,700 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/data/219bbc619/2d814ba284e945059c94a36ae0075712 [2018-11-18 09:44:30,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:44:30,704 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:44:30,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:44:30,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:44:30,706 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:44:30,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:44:30" (1/1) ... [2018-11-18 09:44:30,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5174d3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:44:30, skipping insertion in model container [2018-11-18 09:44:30,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:44:30" (1/1) ... [2018-11-18 09:44:30,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:44:30,726 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:44:30,837 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:44:30,839 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:44:30,850 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:44:30,858 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:44:30,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:44:30 WrapperNode [2018-11-18 09:44:30,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:44:30,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:44:30,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:44:30,860 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:44:30,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:44:30" (1/1) ... [2018-11-18 09:44:30,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:44:30" (1/1) ... [2018-11-18 09:44:30,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:44:30" (1/1) ... [2018-11-18 09:44:30,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:44:30" (1/1) ... [2018-11-18 09:44:30,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:44:30" (1/1) ... [2018-11-18 09:44:30,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:44:30" (1/1) ... [2018-11-18 09:44:30,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:44:30" (1/1) ... [2018-11-18 09:44:30,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:44:30,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:44:30,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:44:30,878 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:44:30,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:44:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/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 [2018-11-18 09:44:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:44:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:44:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-11-18 09:44:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2018-11-18 09:44:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:44:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 09:44:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 09:44:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-11-18 09:44:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2018-11-18 09:44:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:44:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:44:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:44:31,113 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:44:31,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:44:31 BoogieIcfgContainer [2018-11-18 09:44:31,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:44:31,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:44:31,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:44:31,117 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:44:31,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:44:30" (1/3) ... [2018-11-18 09:44:31,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2117c778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:44:31, skipping insertion in model container [2018-11-18 09:44:31,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:44:30" (2/3) ... [2018-11-18 09:44:31,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2117c778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:44:31, skipping insertion in model container [2018-11-18 09:44:31,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:44:31" (3/3) ... [2018-11-18 09:44:31,120 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 09:44:31,125 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:44:31,130 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 09:44:31,140 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 09:44:31,159 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:44:31,160 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:44:31,160 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:44:31,160 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:44:31,160 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:44:31,160 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:44:31,160 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:44:31,160 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:44:31,161 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:44:31,176 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-11-18 09:44:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 09:44:31,181 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:44:31,182 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:44:31,183 INFO L423 AbstractCegarLoop]: === Iteration 1 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 09:44:31,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:44:31,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1091942582, now seen corresponding path program 1 times [2018-11-18 09:44:31,189 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:44:31,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:44:31,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:31,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:31,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:44:31,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:44:31,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:44:31,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:44:31,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:44:31,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:44:31,339 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2018-11-18 09:44:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:44:31,497 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2018-11-18 09:44:31,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:44:31,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-18 09:44:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:44:31,504 INFO L225 Difference]: With dead ends: 85 [2018-11-18 09:44:31,504 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 09:44:31,507 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:44:31,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 09:44:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 09:44:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 09:44:31,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2018-11-18 09:44:31,537 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 14 [2018-11-18 09:44:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:44:31,538 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2018-11-18 09:44:31,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:44:31,538 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2018-11-18 09:44:31,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 09:44:31,539 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:44:31,539 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:44:31,540 INFO L423 AbstractCegarLoop]: === Iteration 2 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 09:44:31,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:44:31,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1091942806, now seen corresponding path program 1 times [2018-11-18 09:44:31,540 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:44:31,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:44:31,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:31,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:31,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:44:31,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:44:31,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:44:31,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:44:31,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:44:31,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:44:31,598 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2018-11-18 09:44:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:44:31,648 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2018-11-18 09:44:31,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:44:31,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-18 09:44:31,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:44:31,650 INFO L225 Difference]: With dead ends: 35 [2018-11-18 09:44:31,650 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 09:44:31,651 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:44:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 09:44:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-18 09:44:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 09:44:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 09:44:31,655 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 14 [2018-11-18 09:44:31,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:44:31,655 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 09:44:31,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:44:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 09:44:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 09:44:31,656 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:44:31,656 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:44:31,656 INFO L423 AbstractCegarLoop]: === Iteration 3 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 09:44:31,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:44:31,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1535417245, now seen corresponding path program 1 times [2018-11-18 09:44:31,656 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:44:31,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:44:31,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:31,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:31,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:44:31,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:44:31,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 09:44:31,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 09:44:31,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 09:44:31,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:44:31,723 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2018-11-18 09:44:31,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:44:31,847 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2018-11-18 09:44:31,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 09:44:31,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-11-18 09:44:31,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:44:31,850 INFO L225 Difference]: With dead ends: 45 [2018-11-18 09:44:31,850 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 09:44:31,851 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-18 09:44:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 09:44:31,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-11-18 09:44:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 09:44:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-18 09:44:31,860 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 20 [2018-11-18 09:44:31,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:44:31,860 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-18 09:44:31,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 09:44:31,860 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-18 09:44:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 09:44:31,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:44:31,861 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:44:31,862 INFO L423 AbstractCegarLoop]: === Iteration 4 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 09:44:31,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:44:31,862 INFO L82 PathProgramCache]: Analyzing trace with hash 353294382, now seen corresponding path program 1 times [2018-11-18 09:44:31,862 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:44:31,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:44:31,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:31,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:31,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:44:31,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:44:31,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:44:31,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:44:31,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:44:31,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:44:31,883 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 3 states. [2018-11-18 09:44:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:44:31,890 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2018-11-18 09:44:31,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:44:31,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-11-18 09:44:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:44:31,891 INFO L225 Difference]: With dead ends: 41 [2018-11-18 09:44:31,891 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 09:44:31,892 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:44:31,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 09:44:31,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 09:44:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 09:44:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-11-18 09:44:31,898 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 21 [2018-11-18 09:44:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:44:31,898 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-11-18 09:44:31,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:44:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-11-18 09:44:31,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 09:44:31,899 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:44:31,899 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:44:31,900 INFO L423 AbstractCegarLoop]: === Iteration 5 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 09:44:31,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:44:31,900 INFO L82 PathProgramCache]: Analyzing trace with hash -823556285, now seen corresponding path program 1 times [2018-11-18 09:44:31,900 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:44:31,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:44:31,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:31,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:31,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:44:31,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:44:31,993 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:44:32,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:32,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:44:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:44:32,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:44:32,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2018-11-18 09:44:32,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 09:44:32,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 09:44:32,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2018-11-18 09:44:32,187 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 20 states. [2018-11-18 09:44:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:44:32,444 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2018-11-18 09:44:32,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 09:44:32,445 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 26 [2018-11-18 09:44:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:44:32,445 INFO L225 Difference]: With dead ends: 52 [2018-11-18 09:44:32,445 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 09:44:32,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2018-11-18 09:44:32,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 09:44:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-18 09:44:32,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 09:44:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-18 09:44:32,450 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 26 [2018-11-18 09:44:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:44:32,450 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-18 09:44:32,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 09:44:32,450 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-18 09:44:32,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 09:44:32,451 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:44:32,451 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:44:32,451 INFO L423 AbstractCegarLoop]: === Iteration 6 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 09:44:32,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:44:32,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1123279450, now seen corresponding path program 1 times [2018-11-18 09:44:32,452 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:44:32,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:44:32,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:32,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:32,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 09:44:32,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:44:32,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 09:44:32,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 09:44:32,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 09:44:32,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-18 09:44:32,527 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 10 states. [2018-11-18 09:44:32,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:44:32,636 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-18 09:44:32,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:44:32,636 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-11-18 09:44:32,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:44:32,637 INFO L225 Difference]: With dead ends: 46 [2018-11-18 09:44:32,637 INFO L226 Difference]: Without dead ends: 45 [2018-11-18 09:44:32,637 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-11-18 09:44:32,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-18 09:44:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2018-11-18 09:44:32,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 09:44:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-18 09:44:32,643 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 30 [2018-11-18 09:44:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:44:32,643 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-18 09:44:32,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 09:44:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-18 09:44:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 09:44:32,644 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:44:32,645 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:44:32,645 INFO L423 AbstractCegarLoop]: === Iteration 7 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 09:44:32,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:44:32,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1396968422, now seen corresponding path program 1 times [2018-11-18 09:44:32,645 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:44:32,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:44:32,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:32,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:32,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 09:44:32,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:44:32,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 09:44:32,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 09:44:32,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 09:44:32,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:44:32,728 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 9 states. [2018-11-18 09:44:32,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:44:32,815 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-11-18 09:44:32,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 09:44:32,816 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-11-18 09:44:32,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:44:32,817 INFO L225 Difference]: With dead ends: 55 [2018-11-18 09:44:32,817 INFO L226 Difference]: Without dead ends: 54 [2018-11-18 09:44:32,817 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:44:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-18 09:44:32,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2018-11-18 09:44:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 09:44:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2018-11-18 09:44:32,822 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 30 [2018-11-18 09:44:32,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:44:32,827 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2018-11-18 09:44:32,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 09:44:32,827 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2018-11-18 09:44:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 09:44:32,828 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:44:32,828 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:44:32,828 INFO L423 AbstractCegarLoop]: === Iteration 8 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 09:44:32,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:44:32,829 INFO L82 PathProgramCache]: Analyzing trace with hash 692456512, now seen corresponding path program 1 times [2018-11-18 09:44:32,829 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:44:32,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:44:32,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:32,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:32,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 09:44:32,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:44:32,897 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:44:32,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:32,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:44:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 09:44:33,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:44:33,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 18 [2018-11-18 09:44:33,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 09:44:33,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 09:44:33,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2018-11-18 09:44:33,024 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 19 states. [2018-11-18 09:44:33,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:44:33,159 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-11-18 09:44:33,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 09:44:33,160 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-11-18 09:44:33,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:44:33,161 INFO L225 Difference]: With dead ends: 61 [2018-11-18 09:44:33,161 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 09:44:33,162 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2018-11-18 09:44:33,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 09:44:33,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-11-18 09:44:33,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 09:44:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2018-11-18 09:44:33,168 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 36 [2018-11-18 09:44:33,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:44:33,169 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2018-11-18 09:44:33,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 09:44:33,169 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2018-11-18 09:44:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-18 09:44:33,170 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:44:33,170 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:44:33,170 INFO L423 AbstractCegarLoop]: === Iteration 9 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 09:44:33,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:44:33,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1785186173, now seen corresponding path program 1 times [2018-11-18 09:44:33,171 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:44:33,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:44:33,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:33,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:33,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 09:44:33,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:44:33,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 09:44:33,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 09:44:33,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 09:44:33,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-18 09:44:33,242 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 11 states. [2018-11-18 09:44:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:44:33,355 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2018-11-18 09:44:33,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 09:44:33,355 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2018-11-18 09:44:33,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:44:33,356 INFO L225 Difference]: With dead ends: 53 [2018-11-18 09:44:33,356 INFO L226 Difference]: Without dead ends: 52 [2018-11-18 09:44:33,356 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2018-11-18 09:44:33,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-18 09:44:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2018-11-18 09:44:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 09:44:33,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2018-11-18 09:44:33,360 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 40 [2018-11-18 09:44:33,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:44:33,360 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2018-11-18 09:44:33,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 09:44:33,360 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2018-11-18 09:44:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 09:44:33,361 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:44:33,361 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:44:33,361 INFO L423 AbstractCegarLoop]: === Iteration 10 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 09:44:33,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:44:33,361 INFO L82 PathProgramCache]: Analyzing trace with hash 329895424, now seen corresponding path program 1 times [2018-11-18 09:44:33,361 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:44:33,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:44:33,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:33,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:33,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 09:44:33,438 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:44:33,438 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:44:33,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:33,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:44:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 09:44:33,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:44:33,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 21 [2018-11-18 09:44:33,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-18 09:44:33,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-18 09:44:33,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2018-11-18 09:44:33,603 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 22 states. [2018-11-18 09:44:33,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:44:33,855 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2018-11-18 09:44:33,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 09:44:33,855 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 36 [2018-11-18 09:44:33,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:44:33,856 INFO L225 Difference]: With dead ends: 62 [2018-11-18 09:44:33,856 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 09:44:33,856 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2018-11-18 09:44:33,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 09:44:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 09:44:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 09:44:33,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-11-18 09:44:33,860 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 36 [2018-11-18 09:44:33,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:44:33,860 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-11-18 09:44:33,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-18 09:44:33,860 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-11-18 09:44:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 09:44:33,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:44:33,861 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:44:33,861 INFO L423 AbstractCegarLoop]: === Iteration 11 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 09:44:33,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:44:33,862 INFO L82 PathProgramCache]: Analyzing trace with hash -587969757, now seen corresponding path program 1 times [2018-11-18 09:44:33,862 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:44:33,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:44:33,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:33,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:33,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:44:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 09:44:33,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:44:33,948 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:44:33,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:44:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:44:33,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:44:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 09:44:34,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 09:44:34,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 18 [2018-11-18 09:44:34,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 09:44:34,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 09:44:34,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2018-11-18 09:44:34,082 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 19 states. [2018-11-18 09:44:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:44:34,231 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-18 09:44:34,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 09:44:34,231 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 46 [2018-11-18 09:44:34,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:44:34,231 INFO L225 Difference]: With dead ends: 46 [2018-11-18 09:44:34,231 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 09:44:34,232 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2018-11-18 09:44:34,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 09:44:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 09:44:34,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 09:44:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 09:44:34,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2018-11-18 09:44:34,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:44:34,232 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:44:34,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 09:44:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 09:44:34,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 09:44:34,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 09:44:34,420 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 09:44:34,421 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 09:44:34,421 INFO L425 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2018-11-18 09:44:34,421 INFO L425 ceAbstractionStarter]: For program point dividesFINAL(lines 30 38) no Hoare annotation was computed. [2018-11-18 09:44:34,421 INFO L425 ceAbstractionStarter]: For program point dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2018-11-18 09:44:34,421 INFO L425 ceAbstractionStarter]: For program point dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2018-11-18 09:44:34,421 INFO L425 ceAbstractionStarter]: For program point dividesEXIT(lines 30 38) no Hoare annotation was computed. [2018-11-18 09:44:34,421 INFO L425 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2018-11-18 09:44:34,421 INFO L425 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-11-18 09:44:34,421 INFO L428 ceAbstractionStarter]: At program point dividesENTRY(lines 30 38) the Hoare annotation is: true [2018-11-18 09:44:34,422 INFO L421 ceAbstractionStarter]: At program point L37-2(line 37) the Hoare annotation is: (let ((.cse0 (< 2147483646 |divides_#in~m|)) (.cse1 (< |divides_#in~n| 1)) (.cse2 (+ |divides_#in~m| 1)) (.cse3 (< 2147483647 |divides_#in~m|))) (and (or .cse0 .cse1 (< |divides_#in~n| .cse2)) (or .cse1 (and (<= divides_~m 2147483647) (<= divides_~n divides_~m) (<= 1 divides_~n)) .cse3) (or .cse0 (<= divides_~m 2147483646) .cse1) (or .cse1 (<= (+ divides_~m 1) (* 2 divides_~n)) (< (* 2 |divides_#in~n|) .cse2) .cse3))) [2018-11-18 09:44:34,422 INFO L425 ceAbstractionStarter]: For program point L34(lines 34 36) no Hoare annotation was computed. [2018-11-18 09:44:34,422 INFO L425 ceAbstractionStarter]: For program point L37-3(line 37) no Hoare annotation was computed. [2018-11-18 09:44:34,422 INFO L425 ceAbstractionStarter]: For program point gcdEXIT(lines 15 27) no Hoare annotation was computed. [2018-11-18 09:44:34,422 INFO L425 ceAbstractionStarter]: For program point gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-18 09:44:34,422 INFO L425 ceAbstractionStarter]: For program point L23(lines 23 25) no Hoare annotation was computed. [2018-11-18 09:44:34,422 INFO L425 ceAbstractionStarter]: For program point gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-18 09:44:34,422 INFO L425 ceAbstractionStarter]: For program point gcdFINAL(lines 15 27) no Hoare annotation was computed. [2018-11-18 09:44:34,422 INFO L425 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-11-18 09:44:34,422 INFO L425 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-11-18 09:44:34,422 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-18 09:44:34,422 INFO L421 ceAbstractionStarter]: At program point L26-2(line 26) the Hoare annotation is: (or (< 2147483647 |gcd_#in~y1|) (and (<= gcd_~y2 2147483647) (= |gcd_#in~y1| gcd_~y1) (<= 1 gcd_~y1) (<= gcd_~y1 (+ gcd_~y2 2147483646))) (< 2147483647 |gcd_#in~y2|)) [2018-11-18 09:44:34,423 INFO L428 ceAbstractionStarter]: At program point gcdENTRY(lines 15 27) the Hoare annotation is: true [2018-11-18 09:44:34,423 INFO L425 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-11-18 09:44:34,423 INFO L425 ceAbstractionStarter]: For program point L26-3(line 26) no Hoare annotation was computed. [2018-11-18 09:44:34,423 INFO L421 ceAbstractionStarter]: At program point L24-2(line 24) the Hoare annotation is: (or (< 2147483647 |gcd_#in~y1|) (and (<= gcd_~y2 2147483647) (= |gcd_#in~y1| gcd_~y1) (<= 1 gcd_~y1) (<= gcd_~y1 (+ gcd_~y2 2147483646))) (< 2147483647 |gcd_#in~y2|)) [2018-11-18 09:44:34,423 INFO L425 ceAbstractionStarter]: For program point gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-18 09:44:34,423 INFO L425 ceAbstractionStarter]: For program point L24-3(line 24) no Hoare annotation was computed. [2018-11-18 09:44:34,423 INFO L425 ceAbstractionStarter]: For program point gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-18 09:44:34,423 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-18 09:44:34,423 INFO L425 ceAbstractionStarter]: For program point L16(lines 16 19) no Hoare annotation was computed. [2018-11-18 09:44:34,423 INFO L425 ceAbstractionStarter]: For program point L16-2(lines 15 27) no Hoare annotation was computed. [2018-11-18 09:44:34,423 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 09:44:34,423 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 09:44:34,424 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 09:44:34,424 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 09:44:34,424 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 40 57) the Hoare annotation is: true [2018-11-18 09:44:34,424 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 40 57) no Hoare annotation was computed. [2018-11-18 09:44:34,424 INFO L425 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2018-11-18 09:44:34,424 INFO L421 ceAbstractionStarter]: At program point L51(line 51) the Hoare annotation is: (and (<= main_~n~0 2147483647) (<= 1 main_~m~0) (<= 1 main_~z~0) (<= main_~m~0 2147483647)) [2018-11-18 09:44:34,424 INFO L421 ceAbstractionStarter]: At program point L50(line 50) the Hoare annotation is: (and (<= main_~n~0 2147483647) (<= 1 main_~m~0) (<= main_~m~0 2147483647)) [2018-11-18 09:44:34,424 INFO L425 ceAbstractionStarter]: For program point L51-1(line 51) no Hoare annotation was computed. [2018-11-18 09:44:34,424 INFO L425 ceAbstractionStarter]: For program point L49(lines 49 56) no Hoare annotation was computed. [2018-11-18 09:44:34,424 INFO L425 ceAbstractionStarter]: For program point L50-1(line 50) no Hoare annotation was computed. [2018-11-18 09:44:34,424 INFO L425 ceAbstractionStarter]: For program point L51-2(lines 51 55) no Hoare annotation was computed. [2018-11-18 09:44:34,425 INFO L425 ceAbstractionStarter]: For program point L49-1(lines 40 57) no Hoare annotation was computed. [2018-11-18 09:44:34,425 INFO L425 ceAbstractionStarter]: For program point L46(lines 46 48) no Hoare annotation was computed. [2018-11-18 09:44:34,425 INFO L425 ceAbstractionStarter]: For program point L42(lines 42 44) no Hoare annotation was computed. [2018-11-18 09:44:34,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:44:34 BoogieIcfgContainer [2018-11-18 09:44:34,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:44:34,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:44:34,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:44:34,428 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:44:34,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:44:31" (3/4) ... [2018-11-18 09:44:34,431 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 09:44:34,437 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 09:44:34,437 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure divides [2018-11-18 09:44:34,438 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2018-11-18 09:44:34,438 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 09:44:34,442 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-18 09:44:34,442 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-18 09:44:34,442 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 09:44:34,479 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a9a374ac-5fce-425a-ae1b-c23e357cd59b/bin-2019/uautomizer/witness.graphml [2018-11-18 09:44:34,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:44:34,480 INFO L168 Benchmark]: Toolchain (without parser) took 3776.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 961.9 MB in the beginning and 1.0 GB in the end (delta: -40.8 MB). Peak memory consumption was 131.2 MB. Max. memory is 11.5 GB. [2018-11-18 09:44:34,481 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:44:34,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.08 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:44:34,481 INFO L168 Benchmark]: Boogie Preprocessor took 18.54 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:44:34,481 INFO L168 Benchmark]: RCFGBuilder took 235.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 09:44:34,482 INFO L168 Benchmark]: TraceAbstraction took 3313.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 38.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 111.6 MB). Peak memory consumption was 149.9 MB. Max. memory is 11.5 GB. [2018-11-18 09:44:34,482 INFO L168 Benchmark]: Witness Printer took 51.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-11-18 09:44:34,483 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 155.08 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.54 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 235.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3313.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 38.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 111.6 MB). Peak memory consumption was 149.9 MB. Max. memory is 11.5 GB. * Witness Printer took 51.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 6 error locations. SAFE Result, 3.2s OverallTime, 11 OverallIterations, 3 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 239 SDtfs, 299 SDslu, 1456 SDs, 0 SdLazy, 2135 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 289 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, 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, 11 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 49 PreInvPairs, 59 NumberOfFragments, 149 HoareAnnotationTreeSize, 49 FomulaSimplifications, 626 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 385 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 457 NumberOfCodeBlocks, 457 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 442 ConstructedInterpolants, 0 QuantifiedInterpolants, 43790 SizeOfPredicates, 20 NumberOfNonLiveVariables, 388 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 94/110 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...