./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 2b89ce5b96ce55081609675201b2a9a116c2941a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 02:40:00,551 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:40:00,552 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:40:00,561 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:40:00,561 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:40:00,562 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:40:00,563 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:40:00,564 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:40:00,566 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:40:00,567 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:40:00,567 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:40:00,568 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:40:00,568 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:40:00,569 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:40:00,570 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:40:00,571 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:40:00,572 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:40:00,573 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:40:00,575 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:40:00,576 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:40:00,577 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:40:00,578 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:40:00,580 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:40:00,580 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:40:00,581 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:40:00,581 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:40:00,582 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:40:00,583 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:40:00,583 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:40:00,584 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:40:00,584 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:40:00,585 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:40:00,585 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:40:00,585 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:40:00,586 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:40:00,587 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:40:00,587 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-23 02:40:00,599 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:40:00,600 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:40:00,600 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 02:40:00,600 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 02:40:00,601 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 02:40:00,601 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 02:40:00,601 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 02:40:00,602 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:40:00,602 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 02:40:00,602 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:40:00,602 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:40:00,602 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 02:40:00,603 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 02:40:00,603 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 02:40:00,603 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 02:40:00,603 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:40:00,603 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:40:00,603 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 02:40:00,604 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:40:00,604 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:40:00,604 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 02:40:00,604 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 02:40:00,604 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:40:00,605 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:40:00,605 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 02:40:00,605 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 02:40:00,605 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 02:40:00,605 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 02:40:00,606 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 02:40:00,606 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_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 -> 2b89ce5b96ce55081609675201b2a9a116c2941a [2018-11-23 02:40:00,632 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:40:00,642 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:40:00,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:40:00,646 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:40:00,646 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:40:00,647 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 02:40:00,691 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/data/71f229f4c/426c7f779a58480fb784e8c84555f409/FLAGddf0b5913 [2018-11-23 02:40:01,034 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:40:01,035 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 02:40:01,039 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/data/71f229f4c/426c7f779a58480fb784e8c84555f409/FLAGddf0b5913 [2018-11-23 02:40:01,049 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/data/71f229f4c/426c7f779a58480fb784e8c84555f409 [2018-11-23 02:40:01,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:40:01,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:40:01,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:40:01,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:40:01,057 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:40:01,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:40:01" (1/1) ... [2018-11-23 02:40:01,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c8d80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01, skipping insertion in model container [2018-11-23 02:40:01,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:40:01" (1/1) ... [2018-11-23 02:40:01,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:40:01,082 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:40:01,220 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:40:01,223 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:40:01,235 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:40:01,245 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:40:01,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01 WrapperNode [2018-11-23 02:40:01,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:40:01,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:40:01,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:40:01,246 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:40:01,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01" (1/1) ... [2018-11-23 02:40:01,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01" (1/1) ... [2018-11-23 02:40:01,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:40:01,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:40:01,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:40:01,261 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:40:01,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01" (1/1) ... [2018-11-23 02:40:01,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01" (1/1) ... [2018-11-23 02:40:01,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01" (1/1) ... [2018-11-23 02:40:01,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01" (1/1) ... [2018-11-23 02:40:01,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01" (1/1) ... [2018-11-23 02:40:01,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01" (1/1) ... [2018-11-23 02:40:01,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01" (1/1) ... [2018-11-23 02:40:01,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:40:01,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:40:01,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:40:01,277 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:40:01,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:40:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 02:40:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 02:40:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:40:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:40:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 02:40:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 02:40:01,500 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:40:01,501 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 02:40:01,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:40:01 BoogieIcfgContainer [2018-11-23 02:40:01,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:40:01,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 02:40:01,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 02:40:01,505 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 02:40:01,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:40:01" (1/3) ... [2018-11-23 02:40:01,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604ff629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:40:01, skipping insertion in model container [2018-11-23 02:40:01,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:01" (2/3) ... [2018-11-23 02:40:01,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604ff629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:40:01, skipping insertion in model container [2018-11-23 02:40:01,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:40:01" (3/3) ... [2018-11-23 02:40:01,510 INFO L112 eAbstractionObserver]: Analyzing ICFG Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 02:40:01,520 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 02:40:01,527 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-23 02:40:01,541 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-23 02:40:01,571 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 02:40:01,572 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 02:40:01,572 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 02:40:01,572 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 02:40:01,572 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:40:01,573 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:40:01,573 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 02:40:01,573 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:40:01,573 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 02:40:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-23 02:40:01,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-23 02:40:01,592 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:01,593 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:01,595 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:01,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:01,602 INFO L82 PathProgramCache]: Analyzing trace with hash -778806590, now seen corresponding path program 1 times [2018-11-23 02:40:01,604 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:01,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:01,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:01,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:01,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:01,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:40:01,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 02:40:01,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:40:01,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:40:01,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:40:01,744 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-11-23 02:40:01,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:01,785 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-11-23 02:40:01,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:40:01,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-23 02:40:01,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:01,797 INFO L225 Difference]: With dead ends: 35 [2018-11-23 02:40:01,797 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 02:40:01,800 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:40:01,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 02:40:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-11-23 02:40:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-23 02:40:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-23 02:40:01,830 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2018-11-23 02:40:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:01,831 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-23 02:40:01,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:40:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-23 02:40:01,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-23 02:40:01,832 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:01,832 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:01,832 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:01,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:01,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1626799533, now seen corresponding path program 1 times [2018-11-23 02:40:01,833 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:01,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:01,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:01,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:01,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:01,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:40:01,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:40:01,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 02:40:01,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 02:40:01,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 02:40:01,862 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2018-11-23 02:40:01,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:01,900 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-23 02:40:01,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 02:40:01,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-23 02:40:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:01,901 INFO L225 Difference]: With dead ends: 26 [2018-11-23 02:40:01,901 INFO L226 Difference]: Without dead ends: 25 [2018-11-23 02:40:01,901 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:40:01,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-23 02:40:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2018-11-23 02:40:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 02:40:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-23 02:40:01,904 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 8 [2018-11-23 02:40:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:01,904 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-23 02:40:01,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 02:40:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-23 02:40:01,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 02:40:01,905 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:01,905 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:01,906 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:01,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:01,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1108821980, now seen corresponding path program 1 times [2018-11-23 02:40:01,906 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:01,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:01,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:01,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:01,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:01,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:40:01,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 02:40:01,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:40:01,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:40:01,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:40:01,934 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2018-11-23 02:40:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:01,962 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-23 02:40:01,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:40:01,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-23 02:40:01,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:01,963 INFO L225 Difference]: With dead ends: 28 [2018-11-23 02:40:01,963 INFO L226 Difference]: Without dead ends: 27 [2018-11-23 02:40:01,963 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:40:01,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-23 02:40:01,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2018-11-23 02:40:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 02:40:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-23 02:40:01,967 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2018-11-23 02:40:01,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:01,967 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-23 02:40:01,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:40:01,967 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-23 02:40:01,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 02:40:01,968 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:01,968 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:01,968 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:01,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:01,968 INFO L82 PathProgramCache]: Analyzing trace with hash -13742961, now seen corresponding path program 1 times [2018-11-23 02:40:01,968 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:01,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:01,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:01,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:01,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:01,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:40:01,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 02:40:01,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:40:01,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:40:01,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:40:01,988 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 3 states. [2018-11-23 02:40:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:02,002 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-23 02:40:02,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:40:02,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-23 02:40:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:02,004 INFO L225 Difference]: With dead ends: 28 [2018-11-23 02:40:02,004 INFO L226 Difference]: Without dead ends: 27 [2018-11-23 02:40:02,004 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:40:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-23 02:40:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-11-23 02:40:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-23 02:40:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-23 02:40:02,009 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 10 [2018-11-23 02:40:02,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:02,009 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-23 02:40:02,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:40:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-23 02:40:02,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 02:40:02,010 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:02,010 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:02,010 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:02,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:02,010 INFO L82 PathProgramCache]: Analyzing trace with hash -426031738, now seen corresponding path program 1 times [2018-11-23 02:40:02,010 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:02,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:02,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:40:02,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:40:02,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 02:40:02,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 02:40:02,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 02:40:02,039 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 4 states. [2018-11-23 02:40:02,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:02,088 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-11-23 02:40:02,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 02:40:02,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-23 02:40:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:02,089 INFO L225 Difference]: With dead ends: 31 [2018-11-23 02:40:02,089 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 02:40:02,089 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:40:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 02:40:02,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2018-11-23 02:40:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 02:40:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-23 02:40:02,092 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 11 [2018-11-23 02:40:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:02,092 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-23 02:40:02,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 02:40:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-23 02:40:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 02:40:02,093 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:02,093 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:02,093 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:02,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:02,094 INFO L82 PathProgramCache]: Analyzing trace with hash -322081935, now seen corresponding path program 1 times [2018-11-23 02:40:02,094 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:02,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:02,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:40:02,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:40:02,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 02:40:02,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 02:40:02,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 02:40:02,133 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 4 states. [2018-11-23 02:40:02,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:02,161 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-23 02:40:02,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 02:40:02,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-23 02:40:02,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:02,162 INFO L225 Difference]: With dead ends: 31 [2018-11-23 02:40:02,163 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 02:40:02,163 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:40:02,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 02:40:02,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2018-11-23 02:40:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-23 02:40:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-11-23 02:40:02,165 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 12 [2018-11-23 02:40:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:02,166 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-11-23 02:40:02,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 02:40:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-23 02:40:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 02:40:02,166 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:02,166 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:02,167 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:02,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:02,167 INFO L82 PathProgramCache]: Analyzing trace with hash -283092845, now seen corresponding path program 1 times [2018-11-23 02:40:02,167 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:02,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:02,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:02,204 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:02,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:02,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-11-23 02:40:02,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 02:40:02,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 02:40:02,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-23 02:40:02,297 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 9 states. [2018-11-23 02:40:02,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:02,385 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-23 02:40:02,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 02:40:02,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-11-23 02:40:02,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:02,387 INFO L225 Difference]: With dead ends: 34 [2018-11-23 02:40:02,387 INFO L226 Difference]: Without dead ends: 33 [2018-11-23 02:40:02,387 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-11-23 02:40:02,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-23 02:40:02,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2018-11-23 02:40:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 02:40:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-23 02:40:02,390 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2018-11-23 02:40:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:02,390 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-23 02:40:02,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 02:40:02,390 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-23 02:40:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 02:40:02,391 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:02,391 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:02,391 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:02,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:02,391 INFO L82 PathProgramCache]: Analyzing trace with hash -185943556, now seen corresponding path program 1 times [2018-11-23 02:40:02,391 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:02,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:02,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:02,433 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:02,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 02:40:02,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-11-23 02:40:02,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 02:40:02,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 02:40:02,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-23 02:40:02,502 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2018-11-23 02:40:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:02,592 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2018-11-23 02:40:02,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 02:40:02,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-11-23 02:40:02,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:02,593 INFO L225 Difference]: With dead ends: 32 [2018-11-23 02:40:02,593 INFO L226 Difference]: Without dead ends: 31 [2018-11-23 02:40:02,593 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-11-23 02:40:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-23 02:40:02,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2018-11-23 02:40:02,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-23 02:40:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-23 02:40:02,596 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 15 [2018-11-23 02:40:02,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:02,596 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-23 02:40:02,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 02:40:02,596 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-23 02:40:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 02:40:02,597 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:02,597 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:02,597 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:02,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:02,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1469282891, now seen corresponding path program 1 times [2018-11-23 02:40:02,598 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:02,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:02,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:02,625 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:02,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:02,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-23 02:40:02,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 02:40:02,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 02:40:02,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:40:02,664 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 5 states. [2018-11-23 02:40:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:02,714 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2018-11-23 02:40:02,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 02:40:02,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-23 02:40:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:02,716 INFO L225 Difference]: With dead ends: 34 [2018-11-23 02:40:02,716 INFO L226 Difference]: Without dead ends: 33 [2018-11-23 02:40:02,717 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-23 02:40:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-23 02:40:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-11-23 02:40:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-23 02:40:02,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-11-23 02:40:02,721 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 16 [2018-11-23 02:40:02,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:02,721 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-11-23 02:40:02,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 02:40:02,721 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-23 02:40:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 02:40:02,724 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:02,724 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:02,725 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:02,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:02,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1696870686, now seen corresponding path program 1 times [2018-11-23 02:40:02,726 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:02,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:02,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:40:02,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 02:40:02,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:40:02,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:40:02,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:40:02,749 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 3 states. [2018-11-23 02:40:02,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:02,754 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-23 02:40:02,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:40:02,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-23 02:40:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:02,756 INFO L225 Difference]: With dead ends: 28 [2018-11-23 02:40:02,756 INFO L226 Difference]: Without dead ends: 27 [2018-11-23 02:40:02,756 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:40:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-23 02:40:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-23 02:40:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 02:40:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-23 02:40:02,759 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2018-11-23 02:40:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:02,759 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-23 02:40:02,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:40:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-23 02:40:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 02:40:02,760 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:02,760 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:02,761 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:02,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:02,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1063383767, now seen corresponding path program 1 times [2018-11-23 02:40:02,761 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:02,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:02,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:02,795 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:02,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:02,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-23 02:40:02,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 02:40:02,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 02:40:02,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:40:02,858 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 5 states. [2018-11-23 02:40:02,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:02,914 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-11-23 02:40:02,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 02:40:02,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-11-23 02:40:02,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:02,915 INFO L225 Difference]: With dead ends: 35 [2018-11-23 02:40:02,915 INFO L226 Difference]: Without dead ends: 34 [2018-11-23 02:40:02,915 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-23 02:40:02,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-23 02:40:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2018-11-23 02:40:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-23 02:40:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-23 02:40:02,920 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 18 [2018-11-23 02:40:02,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:02,920 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-23 02:40:02,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 02:40:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-23 02:40:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 02:40:02,921 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:02,921 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:02,921 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:02,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:02,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1394841536, now seen corresponding path program 1 times [2018-11-23 02:40:02,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:02,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:02,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:02,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:02,948 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:02,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:02,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:03,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:03,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-11-23 02:40:03,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 02:40:03,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 02:40:03,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-23 02:40:03,008 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 7 states. [2018-11-23 02:40:03,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:03,095 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2018-11-23 02:40:03,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 02:40:03,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-23 02:40:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:03,096 INFO L225 Difference]: With dead ends: 39 [2018-11-23 02:40:03,096 INFO L226 Difference]: Without dead ends: 38 [2018-11-23 02:40:03,097 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-11-23 02:40:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-23 02:40:03,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2018-11-23 02:40:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-23 02:40:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-11-23 02:40:03,100 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 19 [2018-11-23 02:40:03,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:03,101 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-11-23 02:40:03,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 02:40:03,101 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-23 02:40:03,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 02:40:03,101 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:03,101 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:03,102 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:03,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:03,102 INFO L82 PathProgramCache]: Analyzing trace with hash -412918366, now seen corresponding path program 2 times [2018-11-23 02:40:03,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:03,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:03,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:03,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:03,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:03,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:03,159 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:03,174 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:40:03,181 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:40:03,181 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:03,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:03,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:03,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2018-11-23 02:40:03,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 02:40:03,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 02:40:03,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-11-23 02:40:03,289 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 15 states. [2018-11-23 02:40:03,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:03,354 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-23 02:40:03,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 02:40:03,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2018-11-23 02:40:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:03,355 INFO L225 Difference]: With dead ends: 28 [2018-11-23 02:40:03,355 INFO L226 Difference]: Without dead ends: 27 [2018-11-23 02:40:03,355 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-11-23 02:40:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-23 02:40:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-23 02:40:03,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 02:40:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-23 02:40:03,358 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2018-11-23 02:40:03,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:03,358 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-23 02:40:03,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 02:40:03,358 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-23 02:40:03,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 02:40:03,358 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:03,359 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:03,359 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:03,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:03,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1677556988, now seen corresponding path program 2 times [2018-11-23 02:40:03,359 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:03,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:03,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:03,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:03,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:03,400 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:03,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:03,400 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:03,407 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:40:03,414 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:40:03,414 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:03,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:03,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:03,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-23 02:40:03,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 02:40:03,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 02:40:03,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 02:40:03,435 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 6 states. [2018-11-23 02:40:03,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:03,474 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-23 02:40:03,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 02:40:03,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-11-23 02:40:03,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:03,475 INFO L225 Difference]: With dead ends: 37 [2018-11-23 02:40:03,475 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 02:40:03,476 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-11-23 02:40:03,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 02:40:03,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-23 02:40:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-23 02:40:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-11-23 02:40:03,479 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2018-11-23 02:40:03,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:03,479 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-11-23 02:40:03,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 02:40:03,479 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-23 02:40:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 02:40:03,483 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:03,483 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:03,483 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:03,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:03,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1519527834, now seen corresponding path program 2 times [2018-11-23 02:40:03,483 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:03,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:03,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:03,484 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:03,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:03,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:03,519 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:03,538 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:40:03,544 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:40:03,544 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:03,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:03,563 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:03,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-23 02:40:03,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 02:40:03,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 02:40:03,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-23 02:40:03,564 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 7 states. [2018-11-23 02:40:03,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:03,617 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-11-23 02:40:03,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 02:40:03,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-11-23 02:40:03,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:03,618 INFO L225 Difference]: With dead ends: 39 [2018-11-23 02:40:03,618 INFO L226 Difference]: Without dead ends: 38 [2018-11-23 02:40:03,618 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-23 02:40:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-23 02:40:03,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-11-23 02:40:03,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-23 02:40:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-11-23 02:40:03,622 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 25 [2018-11-23 02:40:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:03,623 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-11-23 02:40:03,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 02:40:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-11-23 02:40:03,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 02:40:03,623 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:03,623 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:03,624 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:03,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:03,624 INFO L82 PathProgramCache]: Analyzing trace with hash -22888747, now seen corresponding path program 3 times [2018-11-23 02:40:03,624 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:03,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:03,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:03,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:03,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:03,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:03,697 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:03,705 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 02:40:03,715 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 02:40:03,715 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:03,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:03,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:03,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2018-11-23 02:40:03,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 02:40:03,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 02:40:03,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-11-23 02:40:03,794 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 15 states. [2018-11-23 02:40:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:03,990 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-11-23 02:40:03,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 02:40:03,990 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2018-11-23 02:40:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:03,991 INFO L225 Difference]: With dead ends: 44 [2018-11-23 02:40:03,991 INFO L226 Difference]: Without dead ends: 43 [2018-11-23 02:40:03,991 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-11-23 02:40:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-23 02:40:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-11-23 02:40:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-23 02:40:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-11-23 02:40:03,995 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 30 [2018-11-23 02:40:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:03,995 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-11-23 02:40:03,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 02:40:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-11-23 02:40:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-23 02:40:03,996 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:03,996 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:03,996 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:03,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:03,997 INFO L82 PathProgramCache]: Analyzing trace with hash -521247753, now seen corresponding path program 3 times [2018-11-23 02:40:03,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:03,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:03,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:03,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:03,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:04,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:04,037 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:04,043 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 02:40:04,051 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 02:40:04,051 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:04,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:04,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:04,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2018-11-23 02:40:04,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 02:40:04,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 02:40:04,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2018-11-23 02:40:04,146 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 15 states. [2018-11-23 02:40:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:04,309 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-11-23 02:40:04,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 02:40:04,309 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2018-11-23 02:40:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:04,309 INFO L225 Difference]: With dead ends: 62 [2018-11-23 02:40:04,310 INFO L226 Difference]: Without dead ends: 60 [2018-11-23 02:40:04,310 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2018-11-23 02:40:04,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-23 02:40:04,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2018-11-23 02:40:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-23 02:40:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-11-23 02:40:04,315 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 32 [2018-11-23 02:40:04,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:04,315 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-11-23 02:40:04,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 02:40:04,315 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-11-23 02:40:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-23 02:40:04,316 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:04,316 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:04,316 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:04,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:04,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1416527861, now seen corresponding path program 4 times [2018-11-23 02:40:04,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:04,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:04,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:04,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:04,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:04,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:04,382 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:04,390 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 02:40:04,403 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 02:40:04,403 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:04,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:04,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:04,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-23 02:40:04,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 02:40:04,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 02:40:04,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-23 02:40:04,425 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 11 states. [2018-11-23 02:40:04,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:04,507 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-11-23 02:40:04,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 02:40:04,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2018-11-23 02:40:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:04,507 INFO L225 Difference]: With dead ends: 57 [2018-11-23 02:40:04,507 INFO L226 Difference]: Without dead ends: 56 [2018-11-23 02:40:04,508 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-11-23 02:40:04,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-23 02:40:04,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2018-11-23 02:40:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-23 02:40:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-11-23 02:40:04,513 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 44 [2018-11-23 02:40:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:04,513 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-11-23 02:40:04,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 02:40:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-11-23 02:40:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-23 02:40:04,515 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:04,515 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:04,515 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:04,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:04,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2063499460, now seen corresponding path program 5 times [2018-11-23 02:40:04,515 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:04,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:04,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:04,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:04,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:04,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:04,584 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/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 [2018-11-23 02:40:04,592 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 02:40:04,607 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-11-23 02:40:04,607 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:04,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:04,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:04,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-23 02:40:04,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 02:40:04,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 02:40:04,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-23 02:40:04,650 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2018-11-23 02:40:04,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:04,817 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-11-23 02:40:04,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 02:40:04,818 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2018-11-23 02:40:04,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:04,818 INFO L225 Difference]: With dead ends: 65 [2018-11-23 02:40:04,819 INFO L226 Difference]: Without dead ends: 64 [2018-11-23 02:40:04,819 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2018-11-23 02:40:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-23 02:40:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-11-23 02:40:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-23 02:40:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-11-23 02:40:04,824 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 51 [2018-11-23 02:40:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:04,824 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-11-23 02:40:04,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 02:40:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-11-23 02:40:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-23 02:40:04,825 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:04,825 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:04,826 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:04,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:04,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1251908058, now seen corresponding path program 4 times [2018-11-23 02:40:04,826 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:04,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:04,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:04,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:04,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:04,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:04,902 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:04,909 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 02:40:04,920 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 02:40:04,920 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:04,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:04,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:04,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-23 02:40:04,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 02:40:04,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 02:40:04,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-23 02:40:04,958 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2018-11-23 02:40:05,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:05,120 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-11-23 02:40:05,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 02:40:05,121 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2018-11-23 02:40:05,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:05,122 INFO L225 Difference]: With dead ends: 67 [2018-11-23 02:40:05,122 INFO L226 Difference]: Without dead ends: 66 [2018-11-23 02:40:05,122 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2018-11-23 02:40:05,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-23 02:40:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2018-11-23 02:40:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-23 02:40:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-11-23 02:40:05,127 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 53 [2018-11-23 02:40:05,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:05,130 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-11-23 02:40:05,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 02:40:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-11-23 02:40:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-23 02:40:05,131 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:05,131 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:05,131 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:05,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:05,132 INFO L82 PathProgramCache]: Analyzing trace with hash -780023531, now seen corresponding path program 6 times [2018-11-23 02:40:05,132 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:05,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:05,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:05,133 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:05,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:05,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:05,256 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:05,267 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 02:40:05,287 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-11-23 02:40:05,287 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:05,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 34 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:05,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:05,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2018-11-23 02:40:05,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-23 02:40:05,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-23 02:40:05,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2018-11-23 02:40:05,511 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 28 states. [2018-11-23 02:40:06,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:06,194 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2018-11-23 02:40:06,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-23 02:40:06,194 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 58 [2018-11-23 02:40:06,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:06,195 INFO L225 Difference]: With dead ends: 80 [2018-11-23 02:40:06,195 INFO L226 Difference]: Without dead ends: 79 [2018-11-23 02:40:06,196 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=545, Invalid=3361, Unknown=0, NotChecked=0, Total=3906 [2018-11-23 02:40:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-11-23 02:40:06,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2018-11-23 02:40:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-23 02:40:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-11-23 02:40:06,199 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 58 [2018-11-23 02:40:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:06,200 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-11-23 02:40:06,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-23 02:40:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-11-23 02:40:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-23 02:40:06,200 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:06,201 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:06,201 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:06,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2016665143, now seen corresponding path program 5 times [2018-11-23 02:40:06,201 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:06,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:06,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:06,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:06,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:06,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:06,261 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:06,276 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 02:40:06,308 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-11-23 02:40:06,308 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:06,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:06,333 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:06,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-23 02:40:06,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 02:40:06,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 02:40:06,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-11-23 02:40:06,333 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 14 states. [2018-11-23 02:40:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:06,470 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-11-23 02:40:06,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 02:40:06,472 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2018-11-23 02:40:06,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:06,473 INFO L225 Difference]: With dead ends: 81 [2018-11-23 02:40:06,473 INFO L226 Difference]: Without dead ends: 80 [2018-11-23 02:40:06,473 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2018-11-23 02:40:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-11-23 02:40:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2018-11-23 02:40:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-23 02:40:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2018-11-23 02:40:06,479 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 60 [2018-11-23 02:40:06,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:06,479 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2018-11-23 02:40:06,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 02:40:06,479 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2018-11-23 02:40:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-23 02:40:06,480 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:06,480 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:06,480 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:06,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:06,480 INFO L82 PathProgramCache]: Analyzing trace with hash -461589596, now seen corresponding path program 7 times [2018-11-23 02:40:06,481 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:06,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:06,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:06,481 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:06,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:06,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:06,561 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:06,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:06,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:06,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:06,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-23 02:40:06,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 02:40:06,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 02:40:06,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-23 02:40:06,612 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 15 states. [2018-11-23 02:40:06,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:06,759 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2018-11-23 02:40:06,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 02:40:06,759 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2018-11-23 02:40:06,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:06,759 INFO L225 Difference]: With dead ends: 86 [2018-11-23 02:40:06,759 INFO L226 Difference]: Without dead ends: 85 [2018-11-23 02:40:06,760 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=241, Invalid=515, Unknown=0, NotChecked=0, Total=756 [2018-11-23 02:40:06,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-11-23 02:40:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2018-11-23 02:40:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-23 02:40:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-11-23 02:40:06,766 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 65 [2018-11-23 02:40:06,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:06,766 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-11-23 02:40:06,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 02:40:06,766 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-11-23 02:40:06,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-23 02:40:06,767 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:06,767 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:06,767 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:06,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:06,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1205968634, now seen corresponding path program 6 times [2018-11-23 02:40:06,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:06,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:06,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:06,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:06,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:06,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:06,871 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:06,880 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 02:40:06,892 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-11-23 02:40:06,893 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:06,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:06,919 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:06,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-23 02:40:06,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-23 02:40:06,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-23 02:40:06,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-23 02:40:06,920 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 16 states. [2018-11-23 02:40:07,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:07,105 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2018-11-23 02:40:07,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-23 02:40:07,107 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2018-11-23 02:40:07,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:07,107 INFO L225 Difference]: With dead ends: 88 [2018-11-23 02:40:07,108 INFO L226 Difference]: Without dead ends: 87 [2018-11-23 02:40:07,108 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=275, Invalid=595, Unknown=0, NotChecked=0, Total=870 [2018-11-23 02:40:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-11-23 02:40:07,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2018-11-23 02:40:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-11-23 02:40:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-11-23 02:40:07,114 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 67 [2018-11-23 02:40:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:07,115 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-11-23 02:40:07,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-23 02:40:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-11-23 02:40:07,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-23 02:40:07,116 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:07,116 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:07,116 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:07,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:07,116 INFO L82 PathProgramCache]: Analyzing trace with hash -187635881, now seen corresponding path program 7 times [2018-11-23 02:40:07,116 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:07,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:07,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:07,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:07,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:07,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:07,238 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:07,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:07,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:07,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:07,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-23 02:40:07,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 02:40:07,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 02:40:07,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-11-23 02:40:07,297 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 17 states. [2018-11-23 02:40:07,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:07,478 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2018-11-23 02:40:07,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-23 02:40:07,478 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2018-11-23 02:40:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:07,478 INFO L225 Difference]: With dead ends: 95 [2018-11-23 02:40:07,478 INFO L226 Difference]: Without dead ends: 94 [2018-11-23 02:40:07,479 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=312, Invalid=680, Unknown=0, NotChecked=0, Total=992 [2018-11-23 02:40:07,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-11-23 02:40:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2018-11-23 02:40:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-23 02:40:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2018-11-23 02:40:07,483 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 74 [2018-11-23 02:40:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:07,483 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2018-11-23 02:40:07,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 02:40:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2018-11-23 02:40:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-23 02:40:07,484 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:07,484 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:07,485 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:07,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:07,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1412980356, now seen corresponding path program 8 times [2018-11-23 02:40:07,485 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:07,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:07,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:07,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:40:07,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:07,604 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:07,604 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:07,614 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:40:07,632 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:40:07,632 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:07,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:07,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:07,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-23 02:40:07,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-23 02:40:07,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-23 02:40:07,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-11-23 02:40:07,669 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 18 states. [2018-11-23 02:40:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:07,925 INFO L93 Difference]: Finished difference Result 100 states and 101 transitions. [2018-11-23 02:40:07,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-23 02:40:07,926 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2018-11-23 02:40:07,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:07,926 INFO L225 Difference]: With dead ends: 100 [2018-11-23 02:40:07,927 INFO L226 Difference]: Without dead ends: 99 [2018-11-23 02:40:07,927 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=352, Invalid=770, Unknown=0, NotChecked=0, Total=1122 [2018-11-23 02:40:07,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-23 02:40:07,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-11-23 02:40:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-11-23 02:40:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-11-23 02:40:07,933 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 79 [2018-11-23 02:40:07,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:07,933 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-11-23 02:40:07,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-23 02:40:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-11-23 02:40:07,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-23 02:40:07,934 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:07,934 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:07,934 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:07,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:07,934 INFO L82 PathProgramCache]: Analyzing trace with hash 664458214, now seen corresponding path program 8 times [2018-11-23 02:40:07,934 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:07,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:07,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:07,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:07,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:08,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:08,095 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:08,107 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:40:08,125 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:40:08,125 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:08,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:08,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:08,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-23 02:40:08,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-23 02:40:08,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-23 02:40:08,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-11-23 02:40:08,163 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 19 states. [2018-11-23 02:40:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:08,366 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2018-11-23 02:40:08,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-23 02:40:08,367 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 81 [2018-11-23 02:40:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:08,367 INFO L225 Difference]: With dead ends: 102 [2018-11-23 02:40:08,368 INFO L226 Difference]: Without dead ends: 101 [2018-11-23 02:40:08,368 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=393, Invalid=867, Unknown=0, NotChecked=0, Total=1260 [2018-11-23 02:40:08,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-23 02:40:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2018-11-23 02:40:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-11-23 02:40:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-11-23 02:40:08,373 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 81 [2018-11-23 02:40:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:08,373 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-11-23 02:40:08,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-23 02:40:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-11-23 02:40:08,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-23 02:40:08,374 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:08,374 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:08,374 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:08,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:08,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1932035977, now seen corresponding path program 9 times [2018-11-23 02:40:08,374 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:08,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:08,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:08,375 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:08,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:08,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:08,513 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:08,520 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 02:40:08,542 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-11-23 02:40:08,542 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:08,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:08,578 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:08,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-23 02:40:08,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-23 02:40:08,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-23 02:40:08,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-11-23 02:40:08,579 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 20 states. [2018-11-23 02:40:08,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:08,794 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-11-23 02:40:08,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-23 02:40:08,794 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2018-11-23 02:40:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:08,795 INFO L225 Difference]: With dead ends: 109 [2018-11-23 02:40:08,795 INFO L226 Difference]: Without dead ends: 108 [2018-11-23 02:40:08,795 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=437, Invalid=969, Unknown=0, NotChecked=0, Total=1406 [2018-11-23 02:40:08,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-11-23 02:40:08,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-11-23 02:40:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-23 02:40:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2018-11-23 02:40:08,801 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 88 [2018-11-23 02:40:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:08,802 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2018-11-23 02:40:08,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-23 02:40:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2018-11-23 02:40:08,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-23 02:40:08,802 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:08,803 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:08,803 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:08,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:08,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1967096164, now seen corresponding path program 9 times [2018-11-23 02:40:08,803 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:08,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:08,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:08,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:08,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:08,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:08,931 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:08,937 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 02:40:08,949 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-11-23 02:40:08,949 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:08,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 276 proven. 123 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-11-23 02:40:14,251 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:14,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-11-23 02:40:14,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-23 02:40:14,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-23 02:40:14,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1415, Unknown=7, NotChecked=0, Total=1560 [2018-11-23 02:40:14,252 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand 40 states. [2018-11-23 02:40:25,789 WARN L180 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2018-11-23 02:40:28,148 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-11-23 02:40:29,051 WARN L180 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-11-23 02:40:32,594 WARN L180 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-11-23 02:40:37,178 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2018-11-23 02:40:38,786 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2018-11-23 02:40:40,687 WARN L180 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-11-23 02:40:42,709 WARN L180 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2018-11-23 02:40:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:48,518 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2018-11-23 02:40:48,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-11-23 02:40:48,518 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 93 [2018-11-23 02:40:48,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:48,519 INFO L225 Difference]: With dead ends: 113 [2018-11-23 02:40:48,519 INFO L226 Difference]: Without dead ends: 112 [2018-11-23 02:40:48,521 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3070 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=2233, Invalid=9958, Unknown=19, NotChecked=0, Total=12210 [2018-11-23 02:40:48,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-11-23 02:40:48,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2018-11-23 02:40:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-23 02:40:48,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-11-23 02:40:48,527 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-11-23 02:40:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:48,527 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-11-23 02:40:48,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-23 02:40:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-11-23 02:40:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-23 02:40:48,528 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:48,528 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:48,528 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:48,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:48,528 INFO L82 PathProgramCache]: Analyzing trace with hash 593804998, now seen corresponding path program 10 times [2018-11-23 02:40:48,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:48,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:48,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:48,529 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:48,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:48,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:48,662 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:48,672 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 02:40:48,688 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 02:40:48,688 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:48,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:48,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:48,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-23 02:40:48,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-23 02:40:48,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-23 02:40:48,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-11-23 02:40:48,719 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 22 states. [2018-11-23 02:40:48,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:48,991 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-11-23 02:40:48,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-23 02:40:48,991 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 95 [2018-11-23 02:40:48,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:48,991 INFO L225 Difference]: With dead ends: 108 [2018-11-23 02:40:48,991 INFO L226 Difference]: Without dead ends: 107 [2018-11-23 02:40:48,992 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=532, Invalid=1190, Unknown=0, NotChecked=0, Total=1722 [2018-11-23 02:40:48,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-11-23 02:40:48,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2018-11-23 02:40:48,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-11-23 02:40:48,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-11-23 02:40:48,998 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 95 [2018-11-23 02:40:48,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:48,998 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-11-23 02:40:48,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-23 02:40:48,999 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-11-23 02:40:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-23 02:40:48,999 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:48,999 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:48,999 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:49,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:49,000 INFO L82 PathProgramCache]: Analyzing trace with hash 620335511, now seen corresponding path program 11 times [2018-11-23 02:40:49,000 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:49,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:49,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:49,001 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:49,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:49,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:49,130 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:49,140 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 02:40:49,168 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2018-11-23 02:40:49,168 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:49,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:49,179 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:49,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:49,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-11-23 02:40:49,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-23 02:40:49,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-23 02:40:49,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2018-11-23 02:40:49,195 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 23 states. [2018-11-23 02:40:49,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:49,462 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-11-23 02:40:49,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-23 02:40:49,463 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 102 [2018-11-23 02:40:49,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:49,464 INFO L225 Difference]: With dead ends: 115 [2018-11-23 02:40:49,464 INFO L226 Difference]: Without dead ends: 114 [2018-11-23 02:40:49,464 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=583, Invalid=1309, Unknown=0, NotChecked=0, Total=1892 [2018-11-23 02:40:49,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-23 02:40:49,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2018-11-23 02:40:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-11-23 02:40:49,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-11-23 02:40:49,476 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 102 [2018-11-23 02:40:49,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:49,476 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-11-23 02:40:49,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-23 02:40:49,476 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-11-23 02:40:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-23 02:40:49,477 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:40:49,477 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2018-11-23 02:40:49,477 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:40:49,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:40:49,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2055872934, now seen corresponding path program 12 times [2018-11-23 02:40:49,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:40:49,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:40:49,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:49,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:40:49,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:40:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:40:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:49,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:40:49,665 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:40:49,672 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 02:40:49,692 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2018-11-23 02:40:49,692 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:40:49,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:40:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 234 proven. 487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:40:50,129 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:40:50,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27] total 50 [2018-11-23 02:40:50,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-11-23 02:40:50,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-11-23 02:40:50,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2301, Unknown=0, NotChecked=0, Total=2550 [2018-11-23 02:40:50,131 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 51 states. [2018-11-23 02:40:52,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:40:52,671 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-11-23 02:40:52,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-11-23 02:40:52,671 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 109 [2018-11-23 02:40:52,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:40:52,671 INFO L225 Difference]: With dead ends: 121 [2018-11-23 02:40:52,671 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 02:40:52,674 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3453, Invalid=8319, Unknown=0, NotChecked=0, Total=11772 [2018-11-23 02:40:52,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 02:40:52,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 02:40:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 02:40:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 02:40:52,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2018-11-23 02:40:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:40:52,674 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:40:52,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-11-23 02:40:52,675 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 02:40:52,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 02:40:52,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 02:40:52,847 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 224 [2018-11-23 02:40:55,306 WARN L180 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 223 DAG size of output: 87 [2018-11-23 02:40:55,308 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 02:40:55,308 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:40:55,308 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:40:55,308 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 02:40:55,309 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 16 29) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 16 29) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 16 29) the Hoare annotation is: true [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-11-23 02:40:55,309 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-23 02:40:55,310 INFO L444 ceAbstractionStarter]: At program point L22-2(lines 22 27) the Hoare annotation is: (let ((.cse8 (+ main_~d2~0 main_~x~0)) (.cse11 (<= main_~x~0 2147483499)) (.cse14 (<= 73 main_~d1old~0)) (.cse10 (<= 75 main_~d1~0)) (.cse4 (<= 74 main_~d2~0)) (.cse9 (+ main_~d1old~0 main_~x~0))) (let ((.cse7 (<= main_~d2~0 76)) (.cse6 (<= main_~d1old~0 75)) (.cse1 (<= 0 .cse9)) (.cse2 (and .cse11 (<= main_~d1~0 2147483647) .cse14 .cse10 .cse4)) (.cse0 (<= 79 main_~d1~0)) (.cse13 (<= .cse9 2147483647)) (.cse5 (<= main_~d2~0 74)) (.cse12 (<= main_~d1~0 75)) (.cse3 (<= 1 .cse8))) (or (and .cse0 (<= main_~d1old~0 77) .cse1 (<= main_~d1~0 79) .cse2 (<= main_~d2~0 78) .cse3) (and .cse4 (<= main_~x~0 2147483647) (<= main_~d1~0 73) .cse5 (<= 73 main_~d1~0)) (and .cse6 .cse7 (<= main_~d1~0 77) .cse1 (<= .cse8 2147483500) .cse2 (<= .cse9 2147483499) .cse3 (<= 77 main_~d1~0)) (and .cse7 (<= 76 main_~d2~0) .cse10 (<= 75 main_~d1old~0) .cse6 .cse1 .cse11 .cse12) (and (exists ((v_prenex_2 Int)) (and (<= main_~d1~0 (+ v_prenex_2 2)) (<= (* 2 v_prenex_2) 4294967287))) (exists ((main_~d1~0 Int)) (and (<= main_~d1old~0 main_~d1~0) (<= (+ main_~x~0 (* 2 main_~d1~0)) 4294967287))) (exists ((v_prenex_2 Int)) (and (<= main_~d1old~0 (+ v_prenex_2 2)) (<= (* 2 v_prenex_2) 4294967287))) .cse13 (or (and (<= .cse8 2147483648) .cse1 (and .cse2 (<= 77 main_~d1old~0) (<= 78 main_~d2~0)) .cse3) (and .cse1 .cse3 (and .cse2 .cse0 (<= .cse8 2147483569) (<= .cse9 2147483568)))) (exists ((main_~d1~0 Int)) (and (<= (+ main_~x~0 (* 2 main_~d1~0)) 4294967287) (<= main_~d2~0 (+ main_~d1~0 1))))) (and .cse13 .cse4 (<= main_~d1old~0 73) .cse5 .cse12 .cse14 .cse3 .cse10)))) [2018-11-23 02:40:55,310 INFO L448 ceAbstractionStarter]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2018-11-23 02:40:55,310 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-23 02:40:55,322 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,322 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,323 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,323 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,323 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,323 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,323 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,323 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,331 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,331 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,331 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,331 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,331 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,332 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,332 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,332 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:40:55 BoogieIcfgContainer [2018-11-23 02:40:55,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 02:40:55,335 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:40:55,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:40:55,340 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:40:55,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:40:01" (3/4) ... [2018-11-23 02:40:55,343 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 02:40:55,349 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 02:40:55,350 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 02:40:55,353 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-23 02:40:55,353 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 02:40:55,353 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 02:40:55,353 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 02:40:55,373 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((79 <= d1 && d1\old <= 77) && 0 <= d1\old + x) && d1 <= 79) && (((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && d2 <= 78) && 1 <= d2 + x) || ((((74 <= d2 && x <= 2147483647) && d1 <= 73) && d2 <= 74) && 73 <= d1)) || ((((((((d1\old <= 75 && d2 <= 76) && d1 <= 77) && 0 <= d1\old + x) && d2 + x <= 2147483500) && (((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && d1\old + x <= 2147483499) && 1 <= d2 + x) && 77 <= d1)) || (((((((d2 <= 76 && 76 <= d2) && 75 <= d1) && 75 <= d1\old) && d1\old <= 75) && 0 <= d1\old + x) && x <= 2147483499) && d1 <= 75)) || ((((((\exists v_prenex_2 : int :: d1 <= v_prenex_2 + 2 && 2 * v_prenex_2 <= 4294967287) && (\exists main_~d1~0 : int :: d1\old <= main_~d1~0 && x + 2 * main_~d1~0 <= 4294967287)) && (\exists v_prenex_2 : int :: d1\old <= v_prenex_2 + 2 && 2 * v_prenex_2 <= 4294967287)) && d1\old + x <= 2147483647) && ((((d2 + x <= 2147483648 && 0 <= d1\old + x) && (((((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && 77 <= d1\old) && 78 <= d2) && 1 <= d2 + x) || ((0 <= d1\old + x && 1 <= d2 + x) && ((((((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && 79 <= d1) && d2 + x <= 2147483569) && d1\old + x <= 2147483568))) && (\exists main_~d1~0 : int :: x + 2 * main_~d1~0 <= 4294967287 && d2 <= main_~d1~0 + 1))) || (((((((d1\old + x <= 2147483647 && 74 <= d2) && d1\old <= 73) && d2 <= 74) && d1 <= 75) && 73 <= d1\old) && 1 <= d2 + x) && 75 <= d1) [2018-11-23 02:40:55,383 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3a02d665-6e7b-4f0a-8f5a-af4ddb3be2f4/bin-2019/uautomizer/witness.graphml [2018-11-23 02:40:55,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:40:55,383 INFO L168 Benchmark]: Toolchain (without parser) took 54330.73 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 432.5 MB). Free memory was 959.1 MB in the beginning and 903.0 MB in the end (delta: 56.1 MB). Peak memory consumption was 488.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:40:55,384 INFO L168 Benchmark]: CDTParser took 0.13 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. [2018-11-23 02:40:55,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.75 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:40:55,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.49 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:40:55,385 INFO L168 Benchmark]: Boogie Preprocessor took 15.59 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:40:55,385 INFO L168 Benchmark]: RCFGBuilder took 224.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 02:40:55,385 INFO L168 Benchmark]: TraceAbstraction took 53832.99 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 293.6 MB). Free memory was 1.1 GB in the beginning and 903.0 MB in the end (delta: 218.4 MB). Peak memory consumption was 512.0 MB. Max. memory is 11.5 GB. [2018-11-23 02:40:55,386 INFO L168 Benchmark]: Witness Printer took 47.62 ms. Allocated memory is still 1.5 GB. Free memory was 903.0 MB in the beginning and 903.0 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-11-23 02:40:55,387 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 190.75 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.49 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.59 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 224.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 53832.99 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 293.6 MB). Free memory was 1.1 GB in the beginning and 903.0 MB in the end (delta: 218.4 MB). Peak memory consumption was 512.0 MB. Max. memory is 11.5 GB. * Witness Printer took 47.62 ms. Allocated memory is still 1.5 GB. Free memory was 903.0 MB in the beginning and 903.0 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant [2018-11-23 02:40:55,391 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,391 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,391 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,395 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,396 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,396 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,396 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,396 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,397 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,397 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,397 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,397 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,397 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,398 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-23 02:40:55,398 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-23 02:40:55,398 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] Derived loop invariant: ((((((((((79 <= d1 && d1\old <= 77) && 0 <= d1\old + x) && d1 <= 79) && (((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && d2 <= 78) && 1 <= d2 + x) || ((((74 <= d2 && x <= 2147483647) && d1 <= 73) && d2 <= 74) && 73 <= d1)) || ((((((((d1\old <= 75 && d2 <= 76) && d1 <= 77) && 0 <= d1\old + x) && d2 + x <= 2147483500) && (((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && d1\old + x <= 2147483499) && 1 <= d2 + x) && 77 <= d1)) || (((((((d2 <= 76 && 76 <= d2) && 75 <= d1) && 75 <= d1\old) && d1\old <= 75) && 0 <= d1\old + x) && x <= 2147483499) && d1 <= 75)) || ((((((\exists v_prenex_2 : int :: d1 <= v_prenex_2 + 2 && 2 * v_prenex_2 <= 4294967287) && (\exists main_~d1~0 : int :: d1\old <= main_~d1~0 && x + 2 * main_~d1~0 <= 4294967287)) && (\exists v_prenex_2 : int :: d1\old <= v_prenex_2 + 2 && 2 * v_prenex_2 <= 4294967287)) && d1\old + x <= 2147483647) && ((((d2 + x <= 2147483648 && 0 <= d1\old + x) && (((((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && 77 <= d1\old) && 78 <= d2) && 1 <= d2 + x) || ((0 <= d1\old + x && 1 <= d2 + x) && ((((((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && 79 <= d1) && d2 + x <= 2147483569) && d1\old + x <= 2147483568))) && (\exists main_~d1~0 : int :: x + 2 * main_~d1~0 <= 4294967287 && d2 <= main_~d1~0 + 1))) || (((((((d1\old + x <= 2147483647 && 74 <= d2) && d1\old <= 73) && d2 <= 74) && d1 <= 75) && 73 <= d1\old) && 1 <= d2 + x) && 75 <= d1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 6 error locations. SAFE Result, 53.7s OverallTime, 32 OverallIterations, 15 TraceHistogramMax, 40.9s AutomataDifference, 0.0s DeadEndRemovalTime, 2.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 333 SDtfs, 2125 SDslu, 1781 SDs, 0 SdLazy, 3554 SolverSat, 1293 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 14.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2053 GetRequests, 1279 SyntacticMatches, 3 SemanticMatches, 771 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 8955 ImplicationChecksByTransitivity, 33.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=31, 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, 32 MinimizatonAttempts, 144 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 21 NumberOfFragments, 302 HoareAnnotationTreeSize, 5 FomulaSimplifications, 79645 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 178341 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 2738 NumberOfCodeBlocks, 2703 NumberOfCodeBlocksAsserted, 144 NumberOfCheckSat, 2681 ConstructedInterpolants, 40 QuantifiedInterpolants, 606108 SizeOfPredicates, 250 NumberOfNonLiveVariables, 2936 ConjunctsInSsa, 327 ConjunctsInUnsatCore, 57 InterpolantComputations, 8 PerfectInterpolantSequences, 671/10427 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...