./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/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 64bit --witnessprinter.graph.data.programhash 457415f9b28998cf0ba7f80d69eaf14873f5a98f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 05:37:29,678 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:37:29,679 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:37:29,687 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:37:29,688 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:37:29,688 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:37:29,689 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:37:29,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:37:29,691 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:37:29,692 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:37:29,693 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:37:29,693 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:37:29,694 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:37:29,694 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:37:29,695 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:37:29,695 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:37:29,696 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:37:29,698 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:37:29,699 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:37:29,700 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:37:29,701 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:37:29,702 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:37:29,703 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:37:29,703 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:37:29,703 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:37:29,704 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:37:29,705 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:37:29,705 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:37:29,706 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:37:29,706 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:37:29,706 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:37:29,707 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:37:29,707 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:37:29,707 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:37:29,708 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:37:29,708 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:37:29,708 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-10 05:37:29,717 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:37:29,717 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:37:29,718 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:37:29,718 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 05:37:29,719 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:37:29,719 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:37:29,719 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 05:37:29,719 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:37:29,719 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 05:37:29,719 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:37:29,720 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:37:29,720 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:37:29,720 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:37:29,720 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:37:29,720 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 05:37:29,720 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:37:29,720 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:37:29,722 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:37:29,722 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:37:29,722 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:37:29,722 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:37:29,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:37:29,722 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:37:29,722 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:37:29,723 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:37:29,723 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 05:37:29,723 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:37:29,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:37:29,723 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_e40421d6-84c0-4e3b-8102-ae738d0db5a6/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 457415f9b28998cf0ba7f80d69eaf14873f5a98f [2018-11-10 05:37:29,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:37:29,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:37:29,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:37:29,760 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:37:29,760 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:37:29,761 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c [2018-11-10 05:37:29,805 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/data/eb18cb6f1/9a3b9e4eeb694a5088322ea29efbe926/FLAG6552ac916 [2018-11-10 05:37:30,152 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:37:30,152 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c [2018-11-10 05:37:30,156 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/data/eb18cb6f1/9a3b9e4eeb694a5088322ea29efbe926/FLAG6552ac916 [2018-11-10 05:37:30,166 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/data/eb18cb6f1/9a3b9e4eeb694a5088322ea29efbe926 [2018-11-10 05:37:30,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:37:30,169 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 05:37:30,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:37:30,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:37:30,174 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:37:30,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:37:30" (1/1) ... [2018-11-10 05:37:30,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@701bc5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:30, skipping insertion in model container [2018-11-10 05:37:30,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:37:30" (1/1) ... [2018-11-10 05:37:30,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:37:30,198 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:37:30,294 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:37:30,296 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:37:30,306 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:37:30,314 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:37:30,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:30 WrapperNode [2018-11-10 05:37:30,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:37:30,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:37:30,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:37:30,315 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:37:30,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:30" (1/1) ... [2018-11-10 05:37:30,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:30" (1/1) ... [2018-11-10 05:37:30,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:30" (1/1) ... [2018-11-10 05:37:30,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:30" (1/1) ... [2018-11-10 05:37:30,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:30" (1/1) ... [2018-11-10 05:37:30,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:30" (1/1) ... [2018-11-10 05:37:30,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:30" (1/1) ... [2018-11-10 05:37:30,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:37:30,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:37:30,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:37:30,332 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:37:30,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/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 [2018-11-10 05:37:30,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:37:30,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:37:30,420 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-10 05:37:30,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:37:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 05:37:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-10 05:37:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:37:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:37:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:37:30,574 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:37:30,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:37:30 BoogieIcfgContainer [2018-11-10 05:37:30,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:37:30,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:37:30,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:37:30,578 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:37:30,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:37:30" (1/3) ... [2018-11-10 05:37:30,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3dae03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:37:30, skipping insertion in model container [2018-11-10 05:37:30,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:30" (2/3) ... [2018-11-10 05:37:30,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3dae03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:37:30, skipping insertion in model container [2018-11-10 05:37:30,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:37:30" (3/3) ... [2018-11-10 05:37:30,582 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c [2018-11-10 05:37:30,591 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:37:30,598 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-10 05:37:30,612 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-10 05:37:30,636 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:37:30,636 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:37:30,636 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:37:30,636 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:37:30,637 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:37:30,637 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:37:30,637 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:37:30,637 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:37:30,637 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:37:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-11-10 05:37:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 05:37:30,656 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:30,657 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:30,658 INFO L424 AbstractCegarLoop]: === Iteration 1 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:30,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:30,662 INFO L82 PathProgramCache]: Analyzing trace with hash 968375894, now seen corresponding path program 1 times [2018-11-10 05:37:30,664 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:30,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:30,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:30,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:30,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:30,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:37:30,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 05:37:30,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 05:37:30,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 05:37:30,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:37:30,802 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2018-11-10 05:37:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:30,887 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-10 05:37:30,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 05:37:30,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-10 05:37:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:30,895 INFO L225 Difference]: With dead ends: 49 [2018-11-10 05:37:30,895 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 05:37:30,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:37:30,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 05:37:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2018-11-10 05:37:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 05:37:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-11-10 05:37:30,922 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2018-11-10 05:37:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:30,922 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-11-10 05:37:30,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 05:37:30,923 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-10 05:37:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 05:37:30,923 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:30,923 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:30,923 INFO L424 AbstractCegarLoop]: === Iteration 2 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:30,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:30,924 INFO L82 PathProgramCache]: Analyzing trace with hash 968376118, now seen corresponding path program 1 times [2018-11-10 05:37:30,924 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:30,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:30,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:30,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:30,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:30,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:37:30,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 05:37:30,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 05:37:30,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 05:37:30,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:37:30,970 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2018-11-10 05:37:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:31,027 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-11-10 05:37:31,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 05:37:31,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-10 05:37:31,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:31,028 INFO L225 Difference]: With dead ends: 38 [2018-11-10 05:37:31,028 INFO L226 Difference]: Without dead ends: 37 [2018-11-10 05:37:31,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:37:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-10 05:37:31,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2018-11-10 05:37:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 05:37:31,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-10 05:37:31,033 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2018-11-10 05:37:31,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:31,034 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-10 05:37:31,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 05:37:31,034 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-10 05:37:31,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 05:37:31,034 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:31,034 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:31,035 INFO L424 AbstractCegarLoop]: === Iteration 3 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:31,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:31,035 INFO L82 PathProgramCache]: Analyzing trace with hash -45118316, now seen corresponding path program 1 times [2018-11-10 05:37:31,035 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:31,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:31,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:31,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:31,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:37:31,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 05:37:31,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 05:37:31,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 05:37:31,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:37:31,087 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2018-11-10 05:37:31,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:31,132 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-11-10 05:37:31,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 05:37:31,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-10 05:37:31,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:31,133 INFO L225 Difference]: With dead ends: 37 [2018-11-10 05:37:31,133 INFO L226 Difference]: Without dead ends: 36 [2018-11-10 05:37:31,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:37:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-10 05:37:31,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-10 05:37:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-10 05:37:31,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-11-10 05:37:31,136 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 12 [2018-11-10 05:37:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:31,137 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-10 05:37:31,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 05:37:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-11-10 05:37:31,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 05:37:31,137 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:31,138 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:31,138 INFO L424 AbstractCegarLoop]: === Iteration 4 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:31,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:31,138 INFO L82 PathProgramCache]: Analyzing trace with hash -45111365, now seen corresponding path program 1 times [2018-11-10 05:37:31,138 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:31,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:31,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:31,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:31,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:37:31,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 05:37:31,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 05:37:31,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 05:37:31,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:37:31,170 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2018-11-10 05:37:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:31,206 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-10 05:37:31,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 05:37:31,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-10 05:37:31,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:31,208 INFO L225 Difference]: With dead ends: 36 [2018-11-10 05:37:31,208 INFO L226 Difference]: Without dead ends: 35 [2018-11-10 05:37:31,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:37:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-10 05:37:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-10 05:37:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-10 05:37:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-10 05:37:31,213 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 12 [2018-11-10 05:37:31,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:31,214 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-10 05:37:31,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 05:37:31,214 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-10 05:37:31,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 05:37:31,214 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:31,214 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:31,215 INFO L424 AbstractCegarLoop]: === Iteration 5 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:31,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:31,215 INFO L82 PathProgramCache]: Analyzing trace with hash -489425099, now seen corresponding path program 1 times [2018-11-10 05:37:31,215 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:31,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:31,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:31,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:31,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:37:31,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 05:37:31,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 05:37:31,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 05:37:31,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:37:31,263 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2018-11-10 05:37:31,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:31,306 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2018-11-10 05:37:31,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 05:37:31,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-10 05:37:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:31,307 INFO L225 Difference]: With dead ends: 47 [2018-11-10 05:37:31,307 INFO L226 Difference]: Without dead ends: 46 [2018-11-10 05:37:31,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-10 05:37:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-10 05:37:31,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2018-11-10 05:37:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-10 05:37:31,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2018-11-10 05:37:31,313 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 17 [2018-11-10 05:37:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:31,313 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2018-11-10 05:37:31,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 05:37:31,314 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2018-11-10 05:37:31,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 05:37:31,314 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:31,314 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:31,315 INFO L424 AbstractCegarLoop]: === Iteration 6 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:31,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:31,315 INFO L82 PathProgramCache]: Analyzing trace with hash 945154704, now seen corresponding path program 1 times [2018-11-10 05:37:31,315 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:31,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:31,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:31,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:31,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:31,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:31,340 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/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 [2018-11-10 05:37:31,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:31,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:31,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:37:31,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2018-11-10 05:37:31,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 05:37:31,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 05:37:31,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 05:37:31,434 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 8 states. [2018-11-10 05:37:31,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:31,587 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-11-10 05:37:31,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 05:37:31,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-10 05:37:31,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:31,591 INFO L225 Difference]: With dead ends: 54 [2018-11-10 05:37:31,591 INFO L226 Difference]: Without dead ends: 31 [2018-11-10 05:37:31,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2018-11-10 05:37:31,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-10 05:37:31,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-11-10 05:37:31,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-10 05:37:31,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-10 05:37:31,597 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2018-11-10 05:37:31,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:31,597 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-10 05:37:31,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 05:37:31,598 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-10 05:37:31,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 05:37:31,598 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:31,598 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:31,599 INFO L424 AbstractCegarLoop]: === Iteration 7 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:31,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:31,599 INFO L82 PathProgramCache]: Analyzing trace with hash 945154928, now seen corresponding path program 1 times [2018-11-10 05:37:31,599 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:31,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:31,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:31,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:31,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:31,665 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/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 [2018-11-10 05:37:31,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:31,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:31,706 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:37:31,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-10 05:37:31,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 05:37:31,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 05:37:31,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:37:31,707 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2018-11-10 05:37:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:31,781 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-11-10 05:37:31,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 05:37:31,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-11-10 05:37:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:31,783 INFO L225 Difference]: With dead ends: 42 [2018-11-10 05:37:31,783 INFO L226 Difference]: Without dead ends: 41 [2018-11-10 05:37:31,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-11-10 05:37:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-10 05:37:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2018-11-10 05:37:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-10 05:37:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-11-10 05:37:31,787 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 17 [2018-11-10 05:37:31,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:31,788 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-11-10 05:37:31,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 05:37:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-11-10 05:37:31,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 05:37:31,788 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:31,788 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:31,789 INFO L424 AbstractCegarLoop]: === Iteration 8 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:31,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:31,789 INFO L82 PathProgramCache]: Analyzing trace with hash 2007691164, now seen corresponding path program 1 times [2018-11-10 05:37:31,789 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:31,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:31,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:31,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:31,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:31,823 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/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 [2018-11-10 05:37:31,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:31,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:31,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:37:31,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2018-11-10 05:37:31,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 05:37:31,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 05:37:31,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-11-10 05:37:31,882 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 10 states. [2018-11-10 05:37:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:31,943 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-11-10 05:37:31,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 05:37:31,943 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-11-10 05:37:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:31,944 INFO L225 Difference]: With dead ends: 49 [2018-11-10 05:37:31,944 INFO L226 Difference]: Without dead ends: 48 [2018-11-10 05:37:31,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-11-10 05:37:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-10 05:37:31,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-11-10 05:37:31,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 05:37:31,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-11-10 05:37:31,949 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 18 [2018-11-10 05:37:31,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:31,949 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-11-10 05:37:31,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 05:37:31,950 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-11-10 05:37:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 05:37:31,950 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:31,950 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:31,951 INFO L424 AbstractCegarLoop]: === Iteration 9 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:31,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:31,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1188297686, now seen corresponding path program 2 times [2018-11-10 05:37:31,951 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:31,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:31,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:31,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:32,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:32,006 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/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 [2018-11-10 05:37:32,023 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 05:37:32,033 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 05:37:32,033 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:37:32,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:32,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:37:32,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-10 05:37:32,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 05:37:32,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 05:37:32,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:37:32,060 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 7 states. [2018-11-10 05:37:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:32,138 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-11-10 05:37:32,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 05:37:32,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-10 05:37:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:32,139 INFO L225 Difference]: With dead ends: 55 [2018-11-10 05:37:32,139 INFO L226 Difference]: Without dead ends: 54 [2018-11-10 05:37:32,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-11-10 05:37:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-10 05:37:32,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 28. [2018-11-10 05:37:32,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-10 05:37:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-11-10 05:37:32,143 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 23 [2018-11-10 05:37:32,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:32,143 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-11-10 05:37:32,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 05:37:32,144 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-11-10 05:37:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 05:37:32,144 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:32,144 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:32,147 INFO L424 AbstractCegarLoop]: === Iteration 10 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:32,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:32,148 INFO L82 PathProgramCache]: Analyzing trace with hash 894148066, now seen corresponding path program 1 times [2018-11-10 05:37:32,148 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:32,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:32,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:32,149 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:37:32,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:32,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:32,193 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:37:32,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:32,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:32,225 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:37:32,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-10 05:37:32,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 05:37:32,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 05:37:32,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:37:32,226 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2018-11-10 05:37:32,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:32,299 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-11-10 05:37:32,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 05:37:32,300 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-10 05:37:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:32,301 INFO L225 Difference]: With dead ends: 41 [2018-11-10 05:37:32,301 INFO L226 Difference]: Without dead ends: 40 [2018-11-10 05:37:32,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-11-10 05:37:32,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-10 05:37:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2018-11-10 05:37:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-10 05:37:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-11-10 05:37:32,306 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2018-11-10 05:37:32,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:32,307 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-11-10 05:37:32,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 05:37:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-11-10 05:37:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 05:37:32,307 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:32,307 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:32,308 INFO L424 AbstractCegarLoop]: === Iteration 11 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:32,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:32,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1817477447, now seen corresponding path program 1 times [2018-11-10 05:37:32,308 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:32,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:32,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:32,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:32,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:32,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:32,357 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:37:32,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:32,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:32,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:37:32,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-10 05:37:32,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 05:37:32,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 05:37:32,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:37:32,396 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2018-11-10 05:37:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:32,463 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2018-11-10 05:37:32,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 05:37:32,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-10 05:37:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:32,465 INFO L225 Difference]: With dead ends: 47 [2018-11-10 05:37:32,465 INFO L226 Difference]: Without dead ends: 46 [2018-11-10 05:37:32,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-11-10 05:37:32,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-10 05:37:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2018-11-10 05:37:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-10 05:37:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-11-10 05:37:32,471 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 24 [2018-11-10 05:37:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:32,472 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-11-10 05:37:32,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 05:37:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-11-10 05:37:32,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 05:37:32,473 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:32,473 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:32,473 INFO L424 AbstractCegarLoop]: === Iteration 12 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:32,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:32,473 INFO L82 PathProgramCache]: Analyzing trace with hash 774242216, now seen corresponding path program 2 times [2018-11-10 05:37:32,474 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:32,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:32,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:32,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:37:32,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:32,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:32,539 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:37:32,551 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 05:37:32,559 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 05:37:32,559 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:37:32,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:32,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:37:32,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-10 05:37:32,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 05:37:32,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 05:37:32,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-11-10 05:37:32,584 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2018-11-10 05:37:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:32,685 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2018-11-10 05:37:32,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 05:37:32,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2018-11-10 05:37:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:32,685 INFO L225 Difference]: With dead ends: 54 [2018-11-10 05:37:32,686 INFO L226 Difference]: Without dead ends: 53 [2018-11-10 05:37:32,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2018-11-10 05:37:32,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-10 05:37:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2018-11-10 05:37:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-10 05:37:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2018-11-10 05:37:32,691 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 30 [2018-11-10 05:37:32,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:32,692 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2018-11-10 05:37:32,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 05:37:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2018-11-10 05:37:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-10 05:37:32,692 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:32,692 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:32,693 INFO L424 AbstractCegarLoop]: === Iteration 13 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:32,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:32,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1039829778, now seen corresponding path program 3 times [2018-11-10 05:37:32,693 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:32,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:32,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:32,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:37:32,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:32,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:32,766 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:37:32,781 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 05:37:32,815 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-10 05:37:32,815 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:37:32,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:32,841 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:37:32,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-10 05:37:32,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 05:37:32,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 05:37:32,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-11-10 05:37:32,842 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 13 states. [2018-11-10 05:37:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:32,993 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-11-10 05:37:32,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-10 05:37:32,994 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-11-10 05:37:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:32,995 INFO L225 Difference]: With dead ends: 65 [2018-11-10 05:37:32,995 INFO L226 Difference]: Without dead ends: 64 [2018-11-10 05:37:32,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2018-11-10 05:37:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-10 05:37:33,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2018-11-10 05:37:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-10 05:37:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-11-10 05:37:33,004 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 36 [2018-11-10 05:37:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:33,004 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-11-10 05:37:33,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 05:37:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-11-10 05:37:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-10 05:37:33,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:33,005 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:33,005 INFO L424 AbstractCegarLoop]: === Iteration 14 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:33,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:33,005 INFO L82 PathProgramCache]: Analyzing trace with hash -175937325, now seen corresponding path program 2 times [2018-11-10 05:37:33,005 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:33,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:33,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:33,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:37:33,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:33,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:33,107 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:37:33,113 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 05:37:33,120 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 05:37:33,120 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:37:33,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:33,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:37:33,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-10 05:37:33,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 05:37:33,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 05:37:33,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-11-10 05:37:33,147 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 13 states. [2018-11-10 05:37:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:33,245 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2018-11-10 05:37:33,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 05:37:33,246 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-11-10 05:37:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:33,247 INFO L225 Difference]: With dead ends: 71 [2018-11-10 05:37:33,247 INFO L226 Difference]: Without dead ends: 70 [2018-11-10 05:37:33,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-11-10 05:37:33,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-10 05:37:33,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 46. [2018-11-10 05:37:33,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 05:37:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2018-11-10 05:37:33,257 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 36 [2018-11-10 05:37:33,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:33,257 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2018-11-10 05:37:33,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 05:37:33,257 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2018-11-10 05:37:33,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-10 05:37:33,258 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:33,258 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:33,258 INFO L424 AbstractCegarLoop]: === Iteration 15 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:33,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:33,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1655528884, now seen corresponding path program 4 times [2018-11-10 05:37:33,259 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:33,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:33,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:33,260 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:37:33,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:33,321 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-10 05:37:33,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:33,321 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:37:33,328 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 05:37:33,341 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 05:37:33,341 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:37:33,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 64 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 05:37:33,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:37:33,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 20 [2018-11-10 05:37:33,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-10 05:37:33,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-10 05:37:33,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2018-11-10 05:37:33,540 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 21 states. [2018-11-10 05:37:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:33,772 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2018-11-10 05:37:33,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 05:37:33,772 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2018-11-10 05:37:33,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:33,772 INFO L225 Difference]: With dead ends: 88 [2018-11-10 05:37:33,772 INFO L226 Difference]: Without dead ends: 49 [2018-11-10 05:37:33,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2018-11-10 05:37:33,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-10 05:37:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-10 05:37:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-10 05:37:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-11-10 05:37:33,781 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2018-11-10 05:37:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:33,781 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-11-10 05:37:33,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-10 05:37:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-11-10 05:37:33,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-10 05:37:33,782 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:33,782 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:33,782 INFO L424 AbstractCegarLoop]: === Iteration 16 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:33,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:33,782 INFO L82 PathProgramCache]: Analyzing trace with hash -734568865, now seen corresponding path program 3 times [2018-11-10 05:37:33,782 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:33,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:33,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:33,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:37:33,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:33,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:33,885 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:37:33,891 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 05:37:33,902 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-11-10 05:37:33,902 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:37:33,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:33,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:37:33,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-10 05:37:33,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 05:37:33,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 05:37:33,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-11-10 05:37:33,927 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 17 states. [2018-11-10 05:37:34,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:34,038 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-11-10 05:37:34,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-10 05:37:34,039 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2018-11-10 05:37:34,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:34,039 INFO L225 Difference]: With dead ends: 63 [2018-11-10 05:37:34,039 INFO L226 Difference]: Without dead ends: 62 [2018-11-10 05:37:34,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2018-11-10 05:37:34,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-10 05:37:34,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-11-10 05:37:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-10 05:37:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-11-10 05:37:34,050 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 48 [2018-11-10 05:37:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:34,050 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-11-10 05:37:34,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 05:37:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-11-10 05:37:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-10 05:37:34,051 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:37:34,051 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:37:34,051 INFO L424 AbstractCegarLoop]: === Iteration 17 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 05:37:34,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:37:34,052 INFO L82 PathProgramCache]: Analyzing trace with hash 323707371, now seen corresponding path program 4 times [2018-11-10 05:37:34,052 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:37:34,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:37:34,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:34,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:37:34,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:37:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:37:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:37:34,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:37:34,205 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:37:34,212 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 05:37:34,225 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 05:37:34,225 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:37:34,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:37:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 20 proven. 138 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-10 05:37:34,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:37:34,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9] total 25 [2018-11-10 05:37:34,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-10 05:37:34,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-10 05:37:34,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2018-11-10 05:37:34,362 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 26 states. [2018-11-10 05:37:34,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:37:34,537 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-11-10 05:37:34,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 05:37:34,541 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2018-11-10 05:37:34,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:37:34,541 INFO L225 Difference]: With dead ends: 61 [2018-11-10 05:37:34,541 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 05:37:34,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2018-11-10 05:37:34,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 05:37:34,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 05:37:34,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 05:37:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 05:37:34,543 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2018-11-10 05:37:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:37:34,543 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:37:34,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-10 05:37:34,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 05:37:34,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 05:37:34,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 05:37:34,622 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,634 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,643 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,650 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,684 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,694 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,696 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,697 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,698 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,701 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,748 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,749 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,752 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,810 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,811 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,812 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,815 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,853 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,865 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,866 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,867 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,918 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,920 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,923 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,962 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,973 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,976 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,978 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:34,981 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,039 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,040 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,041 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,043 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,093 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,100 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,102 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,103 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,104 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,106 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,149 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,156 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,159 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,160 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,162 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,211 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,212 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,251 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,253 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,256 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,292 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,293 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,296 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,325 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,334 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,335 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,336 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,338 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,347 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,353 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,354 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,361 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,363 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,363 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,364 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,406 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,407 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,408 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,411 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:37:35,705 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 27 [2018-11-10 05:37:35,869 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 1 [2018-11-10 05:37:36,439 WARN L179 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 46 [2018-11-10 05:37:36,441 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 05:37:36,442 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 05:37:36,442 INFO L425 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-10 05:37:36,442 INFO L425 ceAbstractionStarter]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-10 05:37:36,442 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-10 05:37:36,442 INFO L425 ceAbstractionStarter]: For program point fFINAL(lines 13 23) no Hoare annotation was computed. [2018-11-10 05:37:36,442 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-10 05:37:36,442 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-10 05:37:36,442 INFO L421 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse1 (< 2147483647 |f_#in~y|)) (.cse2 (< 2147483647 |f_#in~x|))) (let ((.cse3 (or (= 0 |f_#in~x|) .cse1 .cse2)) (.cse0 (< |f_#in~y| 0)) (.cse4 (< |f_#in~x| 1))) (and (or .cse0 .cse1 (< |f_#in~x| 0) (and (not (= 0 f_~y)) (<= f_~x 2147483648) (<= 0 f_~x) (not (= 0 f_~x)) (<= f_~y 2147483647) (<= 0 f_~y)) .cse2) (or .cse3 (<= f_~x f_~y) (< |f_#in~y| |f_#in~x|) .cse4) (let ((.cse5 (+ |f_#in~y| 1))) (or (< .cse5 0) (< |f_#in~x| .cse5) (= .cse5 0) .cse3 (<= (+ f_~y 1) f_~x))) (or .cse3 (<= f_~x 2147483647) .cse0 .cse4)))) [2018-11-10 05:37:36,443 INFO L425 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2018-11-10 05:37:36,443 INFO L425 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-11-10 05:37:36,443 INFO L425 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2018-11-10 05:37:36,443 INFO L421 ceAbstractionStarter]: At program point L18-2(line 18) the Hoare annotation is: (let ((.cse1 (< 2147483647 |f_#in~y|)) (.cse2 (< 2147483647 |f_#in~x|)) (.cse0 (< |f_#in~y| 0))) (and (or (and (not (= 0 f_~y)) (<= 0 f_~x) (<= f_~x f_~y) (<= f_~y 2147483647)) .cse0 .cse1 (< |f_#in~x| 0) .cse2) (or (or .cse1 .cse2) .cse0 (< |f_#in~x| 1)))) [2018-11-10 05:37:36,443 INFO L425 ceAbstractionStarter]: For program point L18-3(line 18) no Hoare annotation was computed. [2018-11-10 05:37:36,443 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 22) no Hoare annotation was computed. [2018-11-10 05:37:36,443 INFO L425 ceAbstractionStarter]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 05:37:36,443 INFO L425 ceAbstractionStarter]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 05:37:36,443 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 13 23) no Hoare annotation was computed. [2018-11-10 05:37:36,443 INFO L428 ceAbstractionStarter]: At program point fENTRY(lines 13 23) the Hoare annotation is: true [2018-11-10 05:37:36,443 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 05:37:36,443 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 05:37:36,444 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 05:37:36,444 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 05:37:36,444 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 25 32) the Hoare annotation is: true [2018-11-10 05:37:36,444 INFO L421 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= main_~y~0 2147483647) (<= 0 main_~y~0) (<= 0 main_~x~0)) [2018-11-10 05:37:36,444 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 25 32) no Hoare annotation was computed. [2018-11-10 05:37:36,444 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-10 05:37:36,444 INFO L425 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-11-10 05:37:36,444 INFO L425 ceAbstractionStarter]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2018-11-10 05:37:36,444 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 25 32) no Hoare annotation was computed. [2018-11-10 05:37:36,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:37:36 BoogieIcfgContainer [2018-11-10 05:37:36,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:37:36,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:37:36,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:37:36,447 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:37:36,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:37:30" (3/4) ... [2018-11-10 05:37:36,451 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 05:37:36,457 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 05:37:36,457 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-11-10 05:37:36,457 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 05:37:36,461 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-10 05:37:36,461 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 05:37:36,461 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 05:37:36,502 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e40421d6-84c0-4e3b-8102-ae738d0db5a6/bin-2019/uautomizer/witness.graphml [2018-11-10 05:37:36,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:37:36,503 INFO L168 Benchmark]: Toolchain (without parser) took 6334.12 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 322.4 MB). Free memory was 960.2 MB in the beginning and 1.3 GB in the end (delta: -295.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-11-10 05:37:36,503 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:37:36,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.27 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 05:37:36,504 INFO L168 Benchmark]: Boogie Preprocessor took 16.27 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:37:36,504 INFO L168 Benchmark]: RCFGBuilder took 242.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 949.4 MB in the beginning and 1.1 GB in the end (delta: -196.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-10 05:37:36,505 INFO L168 Benchmark]: TraceAbstraction took 5871.31 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 162.5 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -119.5 MB). Peak memory consumption was 454.3 MB. Max. memory is 11.5 GB. [2018-11-10 05:37:36,505 INFO L168 Benchmark]: Witness Printer took 55.33 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. [2018-11-10 05:37:36,507 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.27 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.27 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 242.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 949.4 MB in the beginning and 1.1 GB in the end (delta: -196.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5871.31 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 162.5 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -119.5 MB). Peak memory consumption was 454.3 MB. Max. memory is 11.5 GB. * Witness Printer took 55.33 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 4 error locations. SAFE Result, 5.8s OverallTime, 17 OverallIterations, 9 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 1.8s HoareAnnotationTime, HoareTripleCheckerStatistics: 286 SDtfs, 549 SDslu, 1239 SDs, 0 SdLazy, 1399 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 604 GetRequests, 373 SyntacticMatches, 3 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 146 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 59 PreInvPairs, 59 NumberOfFragments, 190 HoareAnnotationTreeSize, 59 FomulaSimplifications, 532393 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 8 FomulaSimplificationsInter, 45925 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 813 NumberOfCodeBlocks, 813 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 784 ConstructedInterpolants, 0 QuantifiedInterpolants, 104453 SizeOfPredicates, 50 NumberOfNonLiveVariables, 957 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 29 InterpolantComputations, 7 PerfectInterpolantSequences, 130/1155 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...