./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 d28857c86a3c83fc75b1b8cf8125f1c52a370911 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 13:10:52,534 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:10:52,535 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:10:52,543 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:10:52,543 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:10:52,544 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:10:52,545 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:10:52,546 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:10:52,547 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:10:52,548 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:10:52,549 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:10:52,549 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:10:52,550 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:10:52,550 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:10:52,551 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:10:52,552 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:10:52,552 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:10:52,554 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:10:52,555 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:10:52,556 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:10:52,557 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:10:52,558 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:10:52,560 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:10:52,560 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:10:52,560 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:10:52,561 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:10:52,562 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:10:52,562 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:10:52,563 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:10:52,564 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:10:52,564 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:10:52,564 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:10:52,565 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:10:52,565 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:10:52,565 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:10:52,566 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:10:52,566 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 13:10:52,576 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:10:52,577 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:10:52,577 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:10:52,577 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:10:52,578 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:10:52,578 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:10:52,578 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:10:52,579 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:10:52,579 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 13:10:52,579 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:10:52,579 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:10:52,579 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:10:52,579 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:10:52,579 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:10:52,579 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 13:10:52,580 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:10:52,580 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:10:52,580 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:10:52,580 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:10:52,580 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:10:52,580 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:10:52,580 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:10:52,580 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:10:52,581 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:10:52,581 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:10:52,581 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:10:52,581 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:10:52,581 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:10:52,581 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:10:52,581 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_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2018-11-28 13:10:52,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:10:52,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:10:52,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:10:52,618 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:10:52,618 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:10:52,619 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c [2018-11-28 13:10:52,659 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/data/a7ae975f5/90f5fdd94a6a4517b2ff4765757a9932/FLAG239b882e4 [2018-11-28 13:10:53,024 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:10:53,025 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c [2018-11-28 13:10:53,030 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/data/a7ae975f5/90f5fdd94a6a4517b2ff4765757a9932/FLAG239b882e4 [2018-11-28 13:10:53,041 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/data/a7ae975f5/90f5fdd94a6a4517b2ff4765757a9932 [2018-11-28 13:10:53,044 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:10:53,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:10:53,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:10:53,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:10:53,048 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:10:53,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:10:53" (1/1) ... [2018-11-28 13:10:53,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13220c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53, skipping insertion in model container [2018-11-28 13:10:53,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:10:53" (1/1) ... [2018-11-28 13:10:53,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:10:53,066 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:10:53,172 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:10:53,175 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:10:53,184 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:10:53,193 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:10:53,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53 WrapperNode [2018-11-28 13:10:53,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:10:53,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:10:53,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:10:53,194 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:10:53,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53" (1/1) ... [2018-11-28 13:10:53,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53" (1/1) ... [2018-11-28 13:10:53,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:10:53,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:10:53,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:10:53,207 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:10:53,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53" (1/1) ... [2018-11-28 13:10:53,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53" (1/1) ... [2018-11-28 13:10:53,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53" (1/1) ... [2018-11-28 13:10:53,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53" (1/1) ... [2018-11-28 13:10:53,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53" (1/1) ... [2018-11-28 13:10:53,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53" (1/1) ... [2018-11-28 13:10:53,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53" (1/1) ... [2018-11-28 13:10:53,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:10:53,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:10:53,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:10:53,223 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:10:53,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:10:53,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:10:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure mlog [2018-11-28 13:10:53,305 INFO L138 BoogieDeclarations]: Found implementation of procedure mlog [2018-11-28 13:10:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:10:53,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:10:53,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:10:53,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:10:53,405 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:10:53,405 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 13:10:53,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:10:53 BoogieIcfgContainer [2018-11-28 13:10:53,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:10:53,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:10:53,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:10:53,409 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:10:53,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:10:53" (1/3) ... [2018-11-28 13:10:53,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7119cd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:10:53, skipping insertion in model container [2018-11-28 13:10:53,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:53" (2/3) ... [2018-11-28 13:10:53,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7119cd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:10:53, skipping insertion in model container [2018-11-28 13:10:53,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:10:53" (3/3) ... [2018-11-28 13:10:53,411 INFO L112 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn_true-termination_true-no-overflow.c [2018-11-28 13:10:53,418 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:10:53,423 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-28 13:10:53,433 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-28 13:10:53,453 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:10:53,453 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:10:53,453 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:10:53,453 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:10:53,454 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:10:53,454 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:10:53,454 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:10:53,454 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:10:53,454 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:10:53,465 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-28 13:10:53,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 13:10:53,469 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:53,469 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:53,471 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:53,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:53,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1086939273, now seen corresponding path program 1 times [2018-11-28 13:10:53,476 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:53,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:53,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:53,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:53,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:53,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:10:53,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 13:10:53,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:10:53,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:10:53,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:10:53,636 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2018-11-28 13:10:53,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:53,721 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-11-28 13:10:53,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:10:53,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-11-28 13:10:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:53,728 INFO L225 Difference]: With dead ends: 32 [2018-11-28 13:10:53,728 INFO L226 Difference]: Without dead ends: 14 [2018-11-28 13:10:53,731 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:10:53,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-28 13:10:53,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-28 13:10:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 13:10:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-28 13:10:53,755 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2018-11-28 13:10:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:53,755 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-28 13:10:53,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:10:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-28 13:10:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 13:10:53,756 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:53,756 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:53,757 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:53,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:53,757 INFO L82 PathProgramCache]: Analyzing trace with hash -871587015, now seen corresponding path program 1 times [2018-11-28 13:10:53,757 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:53,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:53,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:53,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:53,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:53,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:10:53,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:10:53,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:10:53,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:10:53,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:10:53,800 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2018-11-28 13:10:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:53,835 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-28 13:10:53,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:10:53,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 13:10:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:53,836 INFO L225 Difference]: With dead ends: 21 [2018-11-28 13:10:53,836 INFO L226 Difference]: Without dead ends: 20 [2018-11-28 13:10:53,837 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 [2018-11-28 13:10:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-28 13:10:53,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-11-28 13:10:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 13:10:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-28 13:10:53,841 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2018-11-28 13:10:53,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:53,841 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-28 13:10:53,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:10:53,841 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-28 13:10:53,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 13:10:53,842 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:53,842 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:53,842 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:53,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:53,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1249393641, now seen corresponding path program 1 times [2018-11-28 13:10:53,843 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:53,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:53,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:53,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:53,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:53,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:10:53,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:10:53,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:10:53,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:10:53,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:10:53,885 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2018-11-28 13:10:53,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:53,915 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-28 13:10:53,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:10:53,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-28 13:10:53,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:53,916 INFO L225 Difference]: With dead ends: 18 [2018-11-28 13:10:53,916 INFO L226 Difference]: Without dead ends: 17 [2018-11-28 13:10:53,916 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 [2018-11-28 13:10:53,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-28 13:10:53,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-28 13:10:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 13:10:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-28 13:10:53,919 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2018-11-28 13:10:53,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:53,920 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-28 13:10:53,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:10:53,920 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-28 13:10:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 13:10:53,920 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:53,920 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:53,921 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:53,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:53,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1700573851, now seen corresponding path program 1 times [2018-11-28 13:10:53,921 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:53,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:53,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:53,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:53,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:53,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:53,983 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:54,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:54,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:54,050 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:54,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 13:10:54,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:10:54,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:10:54,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:10:54,051 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2018-11-28 13:10:54,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:54,086 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-28 13:10:54,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:10:54,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-11-28 13:10:54,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:54,087 INFO L225 Difference]: With dead ends: 24 [2018-11-28 13:10:54,087 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 13:10:54,088 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 [2018-11-28 13:10:54,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 13:10:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-11-28 13:10:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 13:10:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-28 13:10:54,091 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2018-11-28 13:10:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:54,091 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-28 13:10:54,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:10:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-28 13:10:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 13:10:54,092 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:54,092 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:54,092 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:54,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:54,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1576595577, now seen corresponding path program 2 times [2018-11-28 13:10:54,093 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:54,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:54,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:54,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:54,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:54,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:54,170 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:54,177 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:10:54,187 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:10:54,187 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:54,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:54,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:54,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 13:10:54,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:10:54,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:10:54,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:10:54,213 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2018-11-28 13:10:54,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:54,275 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-11-28 13:10:54,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:10:54,276 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-11-28 13:10:54,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:54,277 INFO L225 Difference]: With dead ends: 29 [2018-11-28 13:10:54,277 INFO L226 Difference]: Without dead ends: 28 [2018-11-28 13:10:54,277 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:10:54,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-28 13:10:54,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-11-28 13:10:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 13:10:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-28 13:10:54,281 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2018-11-28 13:10:54,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:54,281 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-28 13:10:54,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:10:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-28 13:10:54,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 13:10:54,284 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:54,284 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:54,284 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:54,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:54,284 INFO L82 PathProgramCache]: Analyzing trace with hash -112284325, now seen corresponding path program 3 times [2018-11-28 13:10:54,285 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:54,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:54,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:54,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:54,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:54,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:54,364 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:54,375 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:10:54,388 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 13:10:54,388 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:54,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:54,415 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:54,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 13:10:54,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:10:54,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:10:54,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:10:54,416 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2018-11-28 13:10:54,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:54,471 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-28 13:10:54,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:10:54,472 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-11-28 13:10:54,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:54,473 INFO L225 Difference]: With dead ends: 34 [2018-11-28 13:10:54,473 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 13:10:54,474 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-11-28 13:10:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 13:10:54,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2018-11-28 13:10:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 13:10:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-11-28 13:10:54,480 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2018-11-28 13:10:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:54,480 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-11-28 13:10:54,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:10:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-28 13:10:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 13:10:54,481 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:54,481 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:54,481 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:54,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:54,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2077601209, now seen corresponding path program 4 times [2018-11-28 13:10:54,484 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:54,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:54,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:54,486 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:54,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:54,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:54,592 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:54,603 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:10:54,620 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:10:54,620 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:54,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:54,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:54,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 13:10:54,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 13:10:54,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 13:10:54,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:10:54,651 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 12 states. [2018-11-28 13:10:54,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:54,736 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-11-28 13:10:54,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 13:10:54,737 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2018-11-28 13:10:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:54,738 INFO L225 Difference]: With dead ends: 39 [2018-11-28 13:10:54,738 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 13:10:54,738 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2018-11-28 13:10:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 13:10:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-11-28 13:10:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 13:10:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-11-28 13:10:54,743 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2018-11-28 13:10:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:54,743 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-11-28 13:10:54,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 13:10:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-11-28 13:10:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 13:10:54,744 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:54,744 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:54,744 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:54,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash 370554907, now seen corresponding path program 5 times [2018-11-28 13:10:54,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:54,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:54,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:54,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:54,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:54,861 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:54,861 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:54,875 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:10:54,898 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-28 13:10:54,898 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:54,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:54,924 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:54,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-28 13:10:54,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 13:10:54,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 13:10:54,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-28 13:10:54,926 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 14 states. [2018-11-28 13:10:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:55,007 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-11-28 13:10:55,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 13:10:55,008 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2018-11-28 13:10:55,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:55,008 INFO L225 Difference]: With dead ends: 44 [2018-11-28 13:10:55,008 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 13:10:55,009 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2018-11-28 13:10:55,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 13:10:55,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2018-11-28 13:10:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 13:10:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-11-28 13:10:55,013 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2018-11-28 13:10:55,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:55,013 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-11-28 13:10:55,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 13:10:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-11-28 13:10:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-28 13:10:55,014 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:55,014 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:55,015 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:55,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:55,015 INFO L82 PathProgramCache]: Analyzing trace with hash 131521273, now seen corresponding path program 6 times [2018-11-28 13:10:55,015 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:55,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:55,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:55,016 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:55,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:55,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:55,137 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:55,143 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:10:55,160 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-28 13:10:55,160 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:55,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:55,183 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:55,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-28 13:10:55,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 13:10:55,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 13:10:55,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-11-28 13:10:55,185 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 16 states. [2018-11-28 13:10:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:55,285 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-11-28 13:10:55,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 13:10:55,286 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2018-11-28 13:10:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:55,286 INFO L225 Difference]: With dead ends: 49 [2018-11-28 13:10:55,287 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 13:10:55,287 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2018-11-28 13:10:55,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 13:10:55,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2018-11-28 13:10:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-28 13:10:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-11-28 13:10:55,292 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 41 [2018-11-28 13:10:55,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:55,293 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-11-28 13:10:55,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 13:10:55,293 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-11-28 13:10:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-28 13:10:55,294 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:55,294 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:55,294 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:55,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:55,295 INFO L82 PathProgramCache]: Analyzing trace with hash 436163291, now seen corresponding path program 7 times [2018-11-28 13:10:55,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:55,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:55,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:55,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:55,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:55,441 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:55,441 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:55,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:55,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:55,502 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:55,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-28 13:10:55,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 13:10:55,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 13:10:55,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-11-28 13:10:55,503 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 18 states. [2018-11-28 13:10:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:55,593 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-11-28 13:10:55,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 13:10:55,593 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2018-11-28 13:10:55,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:55,594 INFO L225 Difference]: With dead ends: 54 [2018-11-28 13:10:55,594 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 13:10:55,594 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2018-11-28 13:10:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 13:10:55,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2018-11-28 13:10:55,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 13:10:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-11-28 13:10:55,597 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 46 [2018-11-28 13:10:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:55,598 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-11-28 13:10:55,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 13:10:55,598 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-11-28 13:10:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-28 13:10:55,599 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:55,599 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:55,599 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:55,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:55,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1288669127, now seen corresponding path program 8 times [2018-11-28 13:10:55,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:55,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:55,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:55,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:55,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:55,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:55,750 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:55,757 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:10:55,772 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:10:55,772 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:55,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:55,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:55,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-28 13:10:55,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 13:10:55,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 13:10:55,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-11-28 13:10:55,811 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 20 states. [2018-11-28 13:10:55,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:55,909 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-11-28 13:10:55,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-28 13:10:55,909 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2018-11-28 13:10:55,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:55,910 INFO L225 Difference]: With dead ends: 59 [2018-11-28 13:10:55,910 INFO L226 Difference]: Without dead ends: 58 [2018-11-28 13:10:55,910 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2018-11-28 13:10:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-28 13:10:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2018-11-28 13:10:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-28 13:10:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-11-28 13:10:55,913 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 51 [2018-11-28 13:10:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:55,913 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-11-28 13:10:55,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 13:10:55,914 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-11-28 13:10:55,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 13:10:55,915 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:55,915 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:55,916 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:55,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:55,916 INFO L82 PathProgramCache]: Analyzing trace with hash -195691109, now seen corresponding path program 9 times [2018-11-28 13:10:55,916 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:55,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:55,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:55,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:55,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:56,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:56,066 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:56,074 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:10:56,115 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-28 13:10:56,115 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:56,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:56,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:56,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-28 13:10:56,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-28 13:10:56,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-28 13:10:56,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-11-28 13:10:56,145 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 22 states. [2018-11-28 13:10:56,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:56,260 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-11-28 13:10:56,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-28 13:10:56,261 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2018-11-28 13:10:56,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:56,262 INFO L225 Difference]: With dead ends: 64 [2018-11-28 13:10:56,262 INFO L226 Difference]: Without dead ends: 63 [2018-11-28 13:10:56,262 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2018-11-28 13:10:56,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-28 13:10:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2018-11-28 13:10:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-28 13:10:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-11-28 13:10:56,268 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 56 [2018-11-28 13:10:56,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:56,268 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-11-28 13:10:56,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-28 13:10:56,269 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-11-28 13:10:56,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-28 13:10:56,269 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:56,270 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:56,270 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:56,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:56,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1041663353, now seen corresponding path program 10 times [2018-11-28 13:10:56,273 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:56,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:56,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:56,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:56,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:56,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:56,452 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:56,458 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:10:56,475 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:10:56,475 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:56,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:56,504 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:56,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-28 13:10:56,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-28 13:10:56,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-28 13:10:56,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-11-28 13:10:56,505 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 24 states. [2018-11-28 13:10:56,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:56,623 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-11-28 13:10:56,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-28 13:10:56,623 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 61 [2018-11-28 13:10:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:56,624 INFO L225 Difference]: With dead ends: 69 [2018-11-28 13:10:56,624 INFO L226 Difference]: Without dead ends: 68 [2018-11-28 13:10:56,624 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2018-11-28 13:10:56,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-28 13:10:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2018-11-28 13:10:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 13:10:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-11-28 13:10:56,627 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 61 [2018-11-28 13:10:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:56,627 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-11-28 13:10:56,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-28 13:10:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-11-28 13:10:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-28 13:10:56,628 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:56,628 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:56,629 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:56,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:56,629 INFO L82 PathProgramCache]: Analyzing trace with hash -446285733, now seen corresponding path program 11 times [2018-11-28 13:10:56,629 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:56,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:56,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:56,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:56,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:56,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:56,852 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:56,860 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:10:56,893 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-28 13:10:56,893 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:56,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:56,937 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:56,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-11-28 13:10:56,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-28 13:10:56,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-28 13:10:56,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-11-28 13:10:56,938 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 26 states. [2018-11-28 13:10:57,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:57,162 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-11-28 13:10:57,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-28 13:10:57,163 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 66 [2018-11-28 13:10:57,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:57,164 INFO L225 Difference]: With dead ends: 74 [2018-11-28 13:10:57,164 INFO L226 Difference]: Without dead ends: 73 [2018-11-28 13:10:57,164 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2018-11-28 13:10:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-28 13:10:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2018-11-28 13:10:57,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-28 13:10:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-11-28 13:10:57,169 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 66 [2018-11-28 13:10:57,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:57,169 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-11-28 13:10:57,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-28 13:10:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-11-28 13:10:57,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-28 13:10:57,170 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:57,170 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:57,171 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:57,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:57,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1212349767, now seen corresponding path program 12 times [2018-11-28 13:10:57,171 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:57,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:57,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:57,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:57,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:57,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:57,381 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:57,400 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:10:57,436 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-28 13:10:57,436 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:57,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:57,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:57,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-28 13:10:57,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-28 13:10:57,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-28 13:10:57,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-11-28 13:10:57,469 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 28 states. [2018-11-28 13:10:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:57,644 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-11-28 13:10:57,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-28 13:10:57,644 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 71 [2018-11-28 13:10:57,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:57,645 INFO L225 Difference]: With dead ends: 79 [2018-11-28 13:10:57,645 INFO L226 Difference]: Without dead ends: 78 [2018-11-28 13:10:57,645 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2018-11-28 13:10:57,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-11-28 13:10:57,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2018-11-28 13:10:57,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-28 13:10:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-11-28 13:10:57,649 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 71 [2018-11-28 13:10:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:57,650 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-11-28 13:10:57,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-28 13:10:57,650 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-11-28 13:10:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-11-28 13:10:57,652 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:57,652 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:57,653 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:57,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:57,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1048314651, now seen corresponding path program 13 times [2018-11-28 13:10:57,653 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:57,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:57,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:57,654 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:57,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:57,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:57,972 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:57,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:58,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:58,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:58,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-11-28 13:10:58,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-28 13:10:58,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-28 13:10:58,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-11-28 13:10:58,058 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 30 states. [2018-11-28 13:10:58,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:58,241 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-11-28 13:10:58,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-28 13:10:58,241 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 76 [2018-11-28 13:10:58,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:58,242 INFO L225 Difference]: With dead ends: 84 [2018-11-28 13:10:58,242 INFO L226 Difference]: Without dead ends: 83 [2018-11-28 13:10:58,243 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2018-11-28 13:10:58,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-11-28 13:10:58,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2018-11-28 13:10:58,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-28 13:10:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-11-28 13:10:58,247 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 76 [2018-11-28 13:10:58,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:58,247 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-11-28 13:10:58,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-28 13:10:58,247 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-11-28 13:10:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-28 13:10:58,248 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:58,248 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:58,248 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:58,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:58,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1101533191, now seen corresponding path program 14 times [2018-11-28 13:10:58,249 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:58,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:58,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:58,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:58,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:58,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:58,586 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:58,593 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:10:58,630 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:10:58,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:58,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:58,647 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:58,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:58,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-28 13:10:58,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-28 13:10:58,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-28 13:10:58,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-11-28 13:10:58,666 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 32 states. [2018-11-28 13:10:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:58,913 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-11-28 13:10:58,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-28 13:10:58,914 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 81 [2018-11-28 13:10:58,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:58,915 INFO L225 Difference]: With dead ends: 89 [2018-11-28 13:10:58,915 INFO L226 Difference]: Without dead ends: 88 [2018-11-28 13:10:58,916 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2018-11-28 13:10:58,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-28 13:10:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2018-11-28 13:10:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-28 13:10:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-11-28 13:10:58,920 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 81 [2018-11-28 13:10:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:58,920 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-11-28 13:10:58,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-28 13:10:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-11-28 13:10:58,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-28 13:10:58,921 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:58,921 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:58,922 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:58,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:58,925 INFO L82 PathProgramCache]: Analyzing trace with hash 568548827, now seen corresponding path program 15 times [2018-11-28 13:10:58,925 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:58,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:58,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:58,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:58,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:59,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:10:59,258 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:10:59,275 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:10:59,312 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-28 13:10:59,312 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:10:59,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:59,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:59,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-11-28 13:10:59,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-28 13:10:59,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-28 13:10:59,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-11-28 13:10:59,347 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 34 states. [2018-11-28 13:10:59,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:59,598 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-11-28 13:10:59,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-28 13:10:59,598 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 86 [2018-11-28 13:10:59,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:59,599 INFO L225 Difference]: With dead ends: 94 [2018-11-28 13:10:59,599 INFO L226 Difference]: Without dead ends: 93 [2018-11-28 13:10:59,599 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2018-11-28 13:10:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-28 13:10:59,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2018-11-28 13:10:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-11-28 13:10:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-11-28 13:10:59,603 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 86 [2018-11-28 13:10:59,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:59,604 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-11-28 13:10:59,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-28 13:10:59,604 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-11-28 13:10:59,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-28 13:10:59,605 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:59,605 INFO L402 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:59,605 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:10:59,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:59,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1088729799, now seen corresponding path program 16 times [2018-11-28 13:10:59,605 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:59,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:59,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:59,610 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:10:59,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:00,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:00,013 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:11:00,021 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:11:00,040 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:11:00,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:00,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:00,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:00,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-28 13:11:00,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-28 13:11:00,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-28 13:11:00,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-11-28 13:11:00,085 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 36 states. [2018-11-28 13:11:00,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:00,333 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-11-28 13:11:00,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-28 13:11:00,334 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 91 [2018-11-28 13:11:00,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:00,334 INFO L225 Difference]: With dead ends: 99 [2018-11-28 13:11:00,334 INFO L226 Difference]: Without dead ends: 98 [2018-11-28 13:11:00,335 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2018-11-28 13:11:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-11-28 13:11:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2018-11-28 13:11:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-11-28 13:11:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-11-28 13:11:00,338 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 91 [2018-11-28 13:11:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:00,338 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-11-28 13:11:00,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-28 13:11:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-11-28 13:11:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-28 13:11:00,339 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:00,339 INFO L402 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:00,339 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:00,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:00,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1122519195, now seen corresponding path program 17 times [2018-11-28 13:11:00,339 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:00,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:00,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:00,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:00,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:00,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:00,653 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:11:00,660 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:11:00,727 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-28 13:11:00,727 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:00,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:00,748 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:00,768 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:00,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-11-28 13:11:00,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-28 13:11:00,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-28 13:11:00,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-11-28 13:11:00,769 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 38 states. [2018-11-28 13:11:01,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:01,026 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-11-28 13:11:01,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-28 13:11:01,026 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 96 [2018-11-28 13:11:01,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:01,027 INFO L225 Difference]: With dead ends: 104 [2018-11-28 13:11:01,027 INFO L226 Difference]: Without dead ends: 103 [2018-11-28 13:11:01,027 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2018-11-28 13:11:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-28 13:11:01,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2018-11-28 13:11:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-11-28 13:11:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-11-28 13:11:01,030 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 96 [2018-11-28 13:11:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:01,030 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-11-28 13:11:01,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-28 13:11:01,030 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-11-28 13:11:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-28 13:11:01,031 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:01,031 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:01,031 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:01,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:01,032 INFO L82 PathProgramCache]: Analyzing trace with hash 909843065, now seen corresponding path program 18 times [2018-11-28 13:11:01,032 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:01,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:01,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:01,033 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:01,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:01,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:01,361 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:11:01,367 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:11:01,409 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-28 13:11:01,409 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:01,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:01,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:01,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-11-28 13:11:01,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-28 13:11:01,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-28 13:11:01,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-11-28 13:11:01,444 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 40 states. [2018-11-28 13:11:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:01,692 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-11-28 13:11:01,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-28 13:11:01,692 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 101 [2018-11-28 13:11:01,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:01,692 INFO L225 Difference]: With dead ends: 109 [2018-11-28 13:11:01,692 INFO L226 Difference]: Without dead ends: 108 [2018-11-28 13:11:01,693 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2018-11-28 13:11:01,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-11-28 13:11:01,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2018-11-28 13:11:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-11-28 13:11:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-11-28 13:11:01,697 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 101 [2018-11-28 13:11:01,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:01,697 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-11-28 13:11:01,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-28 13:11:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-11-28 13:11:01,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-28 13:11:01,698 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:01,698 INFO L402 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:01,699 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:01,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:01,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1512651941, now seen corresponding path program 19 times [2018-11-28 13:11:01,699 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:01,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:01,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:01,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:01,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:02,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:02,082 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:11:02,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:11:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:02,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:02,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:02,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-11-28 13:11:02,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-28 13:11:02,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-28 13:11:02,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-11-28 13:11:02,147 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 42 states. [2018-11-28 13:11:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:02,430 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-11-28 13:11:02,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-28 13:11:02,431 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 106 [2018-11-28 13:11:02,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:02,431 INFO L225 Difference]: With dead ends: 114 [2018-11-28 13:11:02,431 INFO L226 Difference]: Without dead ends: 113 [2018-11-28 13:11:02,432 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2018-11-28 13:11:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-11-28 13:11:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2018-11-28 13:11:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-11-28 13:11:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-11-28 13:11:02,435 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 106 [2018-11-28 13:11:02,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:02,435 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-11-28 13:11:02,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-28 13:11:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-11-28 13:11:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-28 13:11:02,436 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:02,436 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:02,436 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:02,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:02,437 INFO L82 PathProgramCache]: Analyzing trace with hash -286566471, now seen corresponding path program 20 times [2018-11-28 13:11:02,437 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:02,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:02,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:02,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:11:02,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:02,865 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:02,866 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:11:02,872 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:11:02,891 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:11:02,891 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:02,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:02,937 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:02,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-28 13:11:02,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-28 13:11:02,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-28 13:11:02,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-11-28 13:11:02,938 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 44 states. [2018-11-28 13:11:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:03,224 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-11-28 13:11:03,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-28 13:11:03,225 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 111 [2018-11-28 13:11:03,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:03,225 INFO L225 Difference]: With dead ends: 119 [2018-11-28 13:11:03,225 INFO L226 Difference]: Without dead ends: 118 [2018-11-28 13:11:03,226 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2018-11-28 13:11:03,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-11-28 13:11:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2018-11-28 13:11:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-11-28 13:11:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-11-28 13:11:03,229 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 111 [2018-11-28 13:11:03,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:03,229 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-11-28 13:11:03,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-28 13:11:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-11-28 13:11:03,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-28 13:11:03,230 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:03,230 INFO L402 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:03,231 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:03,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:03,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1610272283, now seen corresponding path program 21 times [2018-11-28 13:11:03,231 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:03,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:03,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:03,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:03,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:03,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:03,693 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:11:03,699 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:11:03,754 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-11-28 13:11:03,754 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:03,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:03,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:03,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-11-28 13:11:03,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-28 13:11:03,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-28 13:11:03,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-11-28 13:11:03,786 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 46 states. [2018-11-28 13:11:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:04,091 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-11-28 13:11:04,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-28 13:11:04,092 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 116 [2018-11-28 13:11:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:04,093 INFO L225 Difference]: With dead ends: 124 [2018-11-28 13:11:04,093 INFO L226 Difference]: Without dead ends: 123 [2018-11-28 13:11:04,094 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2018-11-28 13:11:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-11-28 13:11:04,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2018-11-28 13:11:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-11-28 13:11:04,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-11-28 13:11:04,096 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 116 [2018-11-28 13:11:04,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:04,096 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-11-28 13:11:04,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-28 13:11:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-11-28 13:11:04,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-28 13:11:04,097 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:04,097 INFO L402 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:04,097 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:04,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:04,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1130366201, now seen corresponding path program 22 times [2018-11-28 13:11:04,097 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:04,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:04,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:04,098 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:04,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:04,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:04,626 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:11:04,634 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:11:04,655 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:11:04,656 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:04,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:04,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:04,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-11-28 13:11:04,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-28 13:11:04,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-28 13:11:04,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-11-28 13:11:04,694 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 48 states. [2018-11-28 13:11:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:05,016 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-11-28 13:11:05,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-28 13:11:05,016 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 121 [2018-11-28 13:11:05,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:05,017 INFO L225 Difference]: With dead ends: 129 [2018-11-28 13:11:05,017 INFO L226 Difference]: Without dead ends: 128 [2018-11-28 13:11:05,018 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2018-11-28 13:11:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-11-28 13:11:05,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2018-11-28 13:11:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-11-28 13:11:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-11-28 13:11:05,022 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 121 [2018-11-28 13:11:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:05,022 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-11-28 13:11:05,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-28 13:11:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-11-28 13:11:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-28 13:11:05,023 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:05,023 INFO L402 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:05,023 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:05,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:05,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1470130395, now seen corresponding path program 23 times [2018-11-28 13:11:05,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:05,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:05,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:05,024 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:05,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:05,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:05,595 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:11:05,604 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:11:05,710 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-11-28 13:11:05,710 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:05,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:05,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:05,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-11-28 13:11:05,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-28 13:11:05,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-28 13:11:05,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-11-28 13:11:05,747 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 50 states. [2018-11-28 13:11:06,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:06,092 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-11-28 13:11:06,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-28 13:11:06,093 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 126 [2018-11-28 13:11:06,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:06,093 INFO L225 Difference]: With dead ends: 134 [2018-11-28 13:11:06,093 INFO L226 Difference]: Without dead ends: 133 [2018-11-28 13:11:06,094 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2018-11-28 13:11:06,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-11-28 13:11:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2018-11-28 13:11:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-11-28 13:11:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-11-28 13:11:06,098 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 126 [2018-11-28 13:11:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:06,098 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-11-28 13:11:06,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-28 13:11:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-11-28 13:11:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-28 13:11:06,099 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:06,099 INFO L402 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:06,099 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:06,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:06,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1556947513, now seen corresponding path program 24 times [2018-11-28 13:11:06,099 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:06,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:06,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:06,100 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:06,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:06,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:06,657 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:11:06,664 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:11:06,742 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-11-28 13:11:06,742 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:06,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:06,775 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:06,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-11-28 13:11:06,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-28 13:11:06,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-28 13:11:06,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-11-28 13:11:06,777 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 52 states. [2018-11-28 13:11:07,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:07,165 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-11-28 13:11:07,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-28 13:11:07,166 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 131 [2018-11-28 13:11:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:07,166 INFO L225 Difference]: With dead ends: 139 [2018-11-28 13:11:07,166 INFO L226 Difference]: Without dead ends: 138 [2018-11-28 13:11:07,167 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2018-11-28 13:11:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-11-28 13:11:07,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2018-11-28 13:11:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-11-28 13:11:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-11-28 13:11:07,171 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 131 [2018-11-28 13:11:07,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:07,172 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-11-28 13:11:07,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-28 13:11:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-11-28 13:11:07,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-28 13:11:07,172 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:07,173 INFO L402 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:07,173 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:07,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:07,173 INFO L82 PathProgramCache]: Analyzing trace with hash 68391835, now seen corresponding path program 25 times [2018-11-28 13:11:07,173 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:07,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:07,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:07,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:07,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:07,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:07,868 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:07,868 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/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 [2018-11-28 13:11:07,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:11:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:07,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:07,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:07,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-11-28 13:11:07,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-28 13:11:07,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-28 13:11:07,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-11-28 13:11:07,937 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 54 states. [2018-11-28 13:11:08,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:08,327 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-11-28 13:11:08,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-28 13:11:08,327 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 136 [2018-11-28 13:11:08,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:08,328 INFO L225 Difference]: With dead ends: 144 [2018-11-28 13:11:08,328 INFO L226 Difference]: Without dead ends: 143 [2018-11-28 13:11:08,328 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2018-11-28 13:11:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-11-28 13:11:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2018-11-28 13:11:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-11-28 13:11:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-11-28 13:11:08,331 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 136 [2018-11-28 13:11:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:08,331 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-11-28 13:11:08,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-28 13:11:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-11-28 13:11:08,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-28 13:11:08,332 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:08,332 INFO L402 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:08,332 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:08,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:08,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1936109433, now seen corresponding path program 26 times [2018-11-28 13:11:08,333 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:08,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:08,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:08,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:11:08,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:08,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:08,975 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:11:08,981 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:11:09,007 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:11:09,007 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:09,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:09,041 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:09,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-11-28 13:11:09,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-11-28 13:11:09,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-11-28 13:11:09,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-11-28 13:11:09,042 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 56 states. [2018-11-28 13:11:09,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:09,455 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-11-28 13:11:09,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-11-28 13:11:09,456 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 141 [2018-11-28 13:11:09,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:09,456 INFO L225 Difference]: With dead ends: 149 [2018-11-28 13:11:09,456 INFO L226 Difference]: Without dead ends: 148 [2018-11-28 13:11:09,457 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2018-11-28 13:11:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-11-28 13:11:09,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2018-11-28 13:11:09,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-11-28 13:11:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-11-28 13:11:09,460 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 141 [2018-11-28 13:11:09,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:09,460 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-11-28 13:11:09,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-11-28 13:11:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-11-28 13:11:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-28 13:11:09,461 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:09,461 INFO L402 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:09,461 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:09,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:09,462 INFO L82 PathProgramCache]: Analyzing trace with hash 765480539, now seen corresponding path program 27 times [2018-11-28 13:11:09,462 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:09,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:09,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:09,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:09,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:10,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:10,111 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:11:10,118 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:11:10,204 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-11-28 13:11:10,204 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:10,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:10,249 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:10,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-11-28 13:11:10,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-11-28 13:11:10,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-11-28 13:11:10,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-11-28 13:11:10,250 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 58 states. [2018-11-28 13:11:10,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:10,700 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-11-28 13:11:10,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-11-28 13:11:10,700 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 146 [2018-11-28 13:11:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:10,701 INFO L225 Difference]: With dead ends: 154 [2018-11-28 13:11:10,701 INFO L226 Difference]: Without dead ends: 153 [2018-11-28 13:11:10,702 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2018-11-28 13:11:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-11-28 13:11:10,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2018-11-28 13:11:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-11-28 13:11:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-11-28 13:11:10,708 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 146 [2018-11-28 13:11:10,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:10,708 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-11-28 13:11:10,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-11-28 13:11:10,708 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-11-28 13:11:10,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-28 13:11:10,709 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:10,709 INFO L402 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:10,709 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:10,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:10,710 INFO L82 PathProgramCache]: Analyzing trace with hash 241216697, now seen corresponding path program 28 times [2018-11-28 13:11:10,710 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:10,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:10,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:10,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:10,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:11,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:11,461 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:11:11,469 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:11:11,505 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:11:11,505 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:11,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:11,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:11,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-11-28 13:11:11,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-11-28 13:11:11,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-11-28 13:11:11,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-11-28 13:11:11,543 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 60 states. [2018-11-28 13:11:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:12,023 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-11-28 13:11:12,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-11-28 13:11:12,023 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 151 [2018-11-28 13:11:12,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:12,024 INFO L225 Difference]: With dead ends: 159 [2018-11-28 13:11:12,024 INFO L226 Difference]: Without dead ends: 158 [2018-11-28 13:11:12,024 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2018-11-28 13:11:12,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-11-28 13:11:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2018-11-28 13:11:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-11-28 13:11:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-11-28 13:11:12,027 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 151 [2018-11-28 13:11:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:12,027 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-11-28 13:11:12,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-11-28 13:11:12,027 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-11-28 13:11:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-28 13:11:12,028 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:12,028 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:12,028 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:12,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:12,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1382901477, now seen corresponding path program 29 times [2018-11-28 13:11:12,028 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:12,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:12,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:12,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:12,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:12,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:11:12,835 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:11:12,841 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:11:13,070 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-11-28 13:11:13,070 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:13,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:13,136 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:13,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-11-28 13:11:13,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-11-28 13:11:13,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-11-28 13:11:13,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-11-28 13:11:13,137 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 62 states. [2018-11-28 13:11:13,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:13,649 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-11-28 13:11:13,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-11-28 13:11:13,649 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 156 [2018-11-28 13:11:13,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:13,650 INFO L225 Difference]: With dead ends: 164 [2018-11-28 13:11:13,650 INFO L226 Difference]: Without dead ends: 163 [2018-11-28 13:11:13,650 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2018-11-28 13:11:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-11-28 13:11:13,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2018-11-28 13:11:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-11-28 13:11:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-11-28 13:11:13,654 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 156 [2018-11-28 13:11:13,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:13,654 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-11-28 13:11:13,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-11-28 13:11:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-11-28 13:11:13,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-28 13:11:13,655 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:13,655 INFO L402 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:13,655 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:11:13,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:13,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1139743225, now seen corresponding path program 30 times [2018-11-28 13:11:13,655 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:11:13,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:11:13,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:13,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:11:13,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:11:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:11:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 2295 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:15,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:11:15,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2018-11-28 13:11:15,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-11-28 13:11:15,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-11-28 13:11:15,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2917, Invalid=6013, Unknown=0, NotChecked=0, Total=8930 [2018-11-28 13:11:15,675 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 95 states. [2018-11-28 13:11:16,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:16,520 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-11-28 13:11:16,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-11-28 13:11:16,520 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 161 [2018-11-28 13:11:16,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:16,520 INFO L225 Difference]: With dead ends: 164 [2018-11-28 13:11:16,521 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 13:11:16,522 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6614 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=6850, Invalid=17330, Unknown=0, NotChecked=0, Total=24180 [2018-11-28 13:11:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 13:11:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 13:11:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 13:11:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 13:11:16,523 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2018-11-28 13:11:16,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:16,523 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:11:16,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-11-28 13:11:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:11:16,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 13:11:16,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 13:11:16,962 WARN L180 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 158 [2018-11-28 13:11:16,965 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 13:11:16,965 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:11:16,965 INFO L448 ceAbstractionStarter]: For program point mlogFINAL(lines 3 16) no Hoare annotation was computed. [2018-11-28 13:11:16,965 INFO L448 ceAbstractionStarter]: For program point mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2018-11-28 13:11:16,965 INFO L448 ceAbstractionStarter]: For program point mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2018-11-28 13:11:16,965 INFO L448 ceAbstractionStarter]: For program point mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2018-11-28 13:11:16,965 INFO L448 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-11-28 13:11:16,965 INFO L448 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2018-11-28 13:11:16,966 INFO L448 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-11-28 13:11:16,966 INFO L448 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-11-28 13:11:16,966 INFO L448 ceAbstractionStarter]: For program point mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2018-11-28 13:11:16,966 INFO L448 ceAbstractionStarter]: For program point mlogEXIT(lines 3 16) no Hoare annotation was computed. [2018-11-28 13:11:16,966 INFO L444 ceAbstractionStarter]: At program point L7-2(lines 7 12) the Hoare annotation is: (let ((.cse1 (div mlog_~x 2)) (.cse0 (< 0 (+ mlog_~x 1))) (.cse2 (<= 0 mlog_~res~0))) (or (and (<= mlog_~res~0 22) .cse0 (<= .cse1 255) .cse2) (and (<= mlog_~res~0 19) .cse0 (<= .cse1 2047) .cse2) (and (<= .cse1 16777215) .cse0 (<= mlog_~res~0 6) .cse2) (< 2147483647 |mlog_#in~x|) (and (<= mlog_~x 2147483647) (<= mlog_~res~0 0) .cse2) (and (<= .cse1 7) .cse0 (<= mlog_~res~0 27) .cse2) (and .cse0 (<= mlog_~res~0 8) (<= .cse1 4194303) .cse2) (and (<= mlog_~res~0 18) .cse0 .cse2 (<= .cse1 4095)) (and .cse0 (<= mlog_~res~0 13) (<= .cse1 131071) .cse2) (and (<= mlog_~res~0 20) .cse0 .cse2 (<= .cse1 1023)) (and (<= mlog_~res~0 28) .cse0 (<= .cse1 3) .cse2) (and (<= mlog_~res~0 1) .cse0 (<= .cse1 536870911) .cse2) (and .cse0 (<= mlog_~res~0 26) (<= .cse1 15) .cse2) (and .cse0 (<= mlog_~res~0 15) (<= .cse1 32767) .cse2) (and .cse0 (<= mlog_~res~0 24) .cse2 (<= .cse1 63)) (and (<= .cse1 33554431) .cse0 (<= mlog_~res~0 5) .cse2) (and (<= mlog_~res~0 3) .cse0 (<= .cse1 134217727) .cse2) (and (<= .cse1 1048575) (<= mlog_~res~0 10) .cse0 .cse2) (and .cse0 (<= mlog_~res~0 11) (<= .cse1 524287) .cse2) (and .cse0 (<= .cse1 8388607) .cse2 (<= mlog_~res~0 7)) (and .cse0 (<= .cse1 2097151) .cse2 (<= mlog_~res~0 9)) (and (<= mlog_~res~0 23) .cse0 (<= .cse1 127) .cse2) (and .cse0 (<= .cse1 67108863) (<= mlog_~res~0 4) .cse2) (and (<= mlog_~res~0 16) .cse0 .cse2 (<= .cse1 16383)) (and (<= mlog_~res~0 21) (<= .cse1 511) .cse0 .cse2) (and (<= mlog_~res~0 2) .cse0 .cse2 (<= .cse1 268435455)) (and (<= .cse1 1) (<= mlog_~res~0 29) .cse0 .cse2) (and .cse0 (<= .cse1 8191) (<= mlog_~res~0 17) .cse2) (and .cse0 .cse2 (<= mlog_~x 1)) (and (<= mlog_~res~0 25) .cse0 .cse2 (<= .cse1 31)) (and (<= .cse1 65535) .cse0 .cse2 (<= mlog_~res~0 14)) (and (<= .cse1 262143) .cse0 (<= mlog_~res~0 12) .cse2))) [2018-11-28 13:11:16,966 INFO L448 ceAbstractionStarter]: For program point L7-3(lines 7 12) no Hoare annotation was computed. [2018-11-28 13:11:16,967 INFO L451 ceAbstractionStarter]: At program point mlogENTRY(lines 3 16) the Hoare annotation is: true [2018-11-28 13:11:16,967 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:11:16,967 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 13:11:16,967 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 13:11:16,967 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 13:11:16,967 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 18 20) the Hoare annotation is: true [2018-11-28 13:11:16,967 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 18 20) no Hoare annotation was computed. [2018-11-28 13:11:16,967 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 18 20) no Hoare annotation was computed. [2018-11-28 13:11:16,967 INFO L444 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (<= |main_#t~nondet1| 2147483647) [2018-11-28 13:11:16,967 INFO L448 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-28 13:11:16,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:11:16 BoogieIcfgContainer [2018-11-28 13:11:16,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:11:16,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:11:16,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:11:16,986 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:11:16,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:10:53" (3/4) ... [2018-11-28 13:11:16,991 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 13:11:16,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 13:11:16,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure mlog [2018-11-28 13:11:16,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 13:11:17,000 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 13:11:17,000 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 13:11:17,000 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 13:11:17,019 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((((res <= 22 && 0 < x + 1) && x / 2 <= 255) && 0 <= res) || (((res <= 19 && 0 < x + 1) && x / 2 <= 2047) && 0 <= res)) || (((x / 2 <= 16777215 && 0 < x + 1) && res <= 6) && 0 <= res)) || 2147483647 < \old(x)) || ((x <= 2147483647 && res <= 0) && 0 <= res)) || (((x / 2 <= 7 && 0 < x + 1) && res <= 27) && 0 <= res)) || (((0 < x + 1 && res <= 8) && x / 2 <= 4194303) && 0 <= res)) || (((res <= 18 && 0 < x + 1) && 0 <= res) && x / 2 <= 4095)) || (((0 < x + 1 && res <= 13) && x / 2 <= 131071) && 0 <= res)) || (((res <= 20 && 0 < x + 1) && 0 <= res) && x / 2 <= 1023)) || (((res <= 28 && 0 < x + 1) && x / 2 <= 3) && 0 <= res)) || (((res <= 1 && 0 < x + 1) && x / 2 <= 536870911) && 0 <= res)) || (((0 < x + 1 && res <= 26) && x / 2 <= 15) && 0 <= res)) || (((0 < x + 1 && res <= 15) && x / 2 <= 32767) && 0 <= res)) || (((0 < x + 1 && res <= 24) && 0 <= res) && x / 2 <= 63)) || (((x / 2 <= 33554431 && 0 < x + 1) && res <= 5) && 0 <= res)) || (((res <= 3 && 0 < x + 1) && x / 2 <= 134217727) && 0 <= res)) || (((x / 2 <= 1048575 && res <= 10) && 0 < x + 1) && 0 <= res)) || (((0 < x + 1 && res <= 11) && x / 2 <= 524287) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 8388607) && 0 <= res) && res <= 7)) || (((0 < x + 1 && x / 2 <= 2097151) && 0 <= res) && res <= 9)) || (((res <= 23 && 0 < x + 1) && x / 2 <= 127) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 67108863) && res <= 4) && 0 <= res)) || (((res <= 16 && 0 < x + 1) && 0 <= res) && x / 2 <= 16383)) || (((res <= 21 && x / 2 <= 511) && 0 < x + 1) && 0 <= res)) || (((res <= 2 && 0 < x + 1) && 0 <= res) && x / 2 <= 268435455)) || (((x / 2 <= 1 && res <= 29) && 0 < x + 1) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 8191) && res <= 17) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x <= 1)) || (((res <= 25 && 0 < x + 1) && 0 <= res) && x / 2 <= 31)) || (((x / 2 <= 65535 && 0 < x + 1) && 0 <= res) && res <= 14)) || (((x / 2 <= 262143 && 0 < x + 1) && res <= 12) && 0 <= res) [2018-11-28 13:11:17,028 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8424d0c8-fcbf-432c-87aa-1cde2906ac8b/bin-2019/uautomizer/witness.graphml [2018-11-28 13:11:17,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:11:17,028 INFO L168 Benchmark]: Toolchain (without parser) took 23984.21 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 514.3 MB). Free memory was 958.7 MB in the beginning and 1.3 GB in the end (delta: -351.9 MB). Peak memory consumption was 162.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:11:17,029 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:11:17,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.22 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 947.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:11:17,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.88 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:11:17,029 INFO L168 Benchmark]: Boogie Preprocessor took 15.30 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:11:17,030 INFO L168 Benchmark]: RCFGBuilder took 183.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-28 13:11:17,031 INFO L168 Benchmark]: TraceAbstraction took 23578.38 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 369.1 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -194.3 MB). Peak memory consumption was 174.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:11:17,031 INFO L168 Benchmark]: Witness Printer took 42.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-11-28 13:11:17,033 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.22 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 947.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.88 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.30 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 183.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 23578.38 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 369.1 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -194.3 MB). Peak memory consumption was 174.8 MB. Max. memory is 11.5 GB. * Witness Printer took 42.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((res <= 22 && 0 < x + 1) && x / 2 <= 255) && 0 <= res) || (((res <= 19 && 0 < x + 1) && x / 2 <= 2047) && 0 <= res)) || (((x / 2 <= 16777215 && 0 < x + 1) && res <= 6) && 0 <= res)) || 2147483647 < \old(x)) || ((x <= 2147483647 && res <= 0) && 0 <= res)) || (((x / 2 <= 7 && 0 < x + 1) && res <= 27) && 0 <= res)) || (((0 < x + 1 && res <= 8) && x / 2 <= 4194303) && 0 <= res)) || (((res <= 18 && 0 < x + 1) && 0 <= res) && x / 2 <= 4095)) || (((0 < x + 1 && res <= 13) && x / 2 <= 131071) && 0 <= res)) || (((res <= 20 && 0 < x + 1) && 0 <= res) && x / 2 <= 1023)) || (((res <= 28 && 0 < x + 1) && x / 2 <= 3) && 0 <= res)) || (((res <= 1 && 0 < x + 1) && x / 2 <= 536870911) && 0 <= res)) || (((0 < x + 1 && res <= 26) && x / 2 <= 15) && 0 <= res)) || (((0 < x + 1 && res <= 15) && x / 2 <= 32767) && 0 <= res)) || (((0 < x + 1 && res <= 24) && 0 <= res) && x / 2 <= 63)) || (((x / 2 <= 33554431 && 0 < x + 1) && res <= 5) && 0 <= res)) || (((res <= 3 && 0 < x + 1) && x / 2 <= 134217727) && 0 <= res)) || (((x / 2 <= 1048575 && res <= 10) && 0 < x + 1) && 0 <= res)) || (((0 < x + 1 && res <= 11) && x / 2 <= 524287) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 8388607) && 0 <= res) && res <= 7)) || (((0 < x + 1 && x / 2 <= 2097151) && 0 <= res) && res <= 9)) || (((res <= 23 && 0 < x + 1) && x / 2 <= 127) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 67108863) && res <= 4) && 0 <= res)) || (((res <= 16 && 0 < x + 1) && 0 <= res) && x / 2 <= 16383)) || (((res <= 21 && x / 2 <= 511) && 0 < x + 1) && 0 <= res)) || (((res <= 2 && 0 < x + 1) && 0 <= res) && x / 2 <= 268435455)) || (((x / 2 <= 1 && res <= 29) && 0 < x + 1) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 8191) && res <= 17) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x <= 1)) || (((res <= 25 && 0 < x + 1) && 0 <= res) && x / 2 <= 31)) || (((x / 2 <= 65535 && 0 < x + 1) && 0 <= res) && res <= 14)) || (((x / 2 <= 262143 && 0 < x + 1) && res <= 12) && 0 <= res) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 4 error locations. SAFE Result, 23.5s OverallTime, 33 OverallIterations, 31 TraceHistogramMax, 7.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 391 SDtfs, 1892 SDslu, 6443 SDs, 0 SdLazy, 3373 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4057 GetRequests, 2499 SyntacticMatches, 0 SemanticMatches, 1558 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19664 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=32, 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, 33 MinimizatonAttempts, 31 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 38 NumberOfFragments, 528 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 183 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 5181 NumberOfCodeBlocks, 5181 NumberOfCodeBlocksAsserted, 292 NumberOfCheckSat, 5119 ConstructedInterpolants, 0 QuantifiedInterpolants, 1635221 SizeOfPredicates, 464 NumberOfNonLiveVariables, 5597 ConjunctsInSsa, 957 ConjunctsInUnsatCore, 62 InterpolantComputations, 4 PerfectInterpolantSequences, 2295/46375 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...