./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination4_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination4_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 94b61e96441ca10668b436b4ef10dfd9464f0863 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 05:24:43,560 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 05:24:43,561 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 05:24:43,569 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 05:24:43,569 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 05:24:43,569 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 05:24:43,570 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 05:24:43,571 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 05:24:43,573 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 05:24:43,573 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 05:24:43,574 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 05:24:43,574 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 05:24:43,575 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 05:24:43,575 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 05:24:43,576 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 05:24:43,576 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 05:24:43,577 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 05:24:43,578 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 05:24:43,580 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 05:24:43,581 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 05:24:43,581 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 05:24:43,582 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 05:24:43,584 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 05:24:43,584 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 05:24:43,584 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 05:24:43,585 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 05:24:43,585 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 05:24:43,586 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 05:24:43,587 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 05:24:43,587 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 05:24:43,587 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 05:24:43,588 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 05:24:43,588 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 05:24:43,588 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 05:24:43,589 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 05:24:43,589 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 05:24:43,590 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-12-02 05:24:43,598 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 05:24:43,598 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 05:24:43,599 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 05:24:43,599 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 05:24:43,599 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 05:24:43,599 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 05:24:43,600 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 05:24:43,600 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 05:24:43,600 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 05:24:43,600 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 05:24:43,600 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 05:24:43,600 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 05:24:43,600 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 05:24:43,601 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 05:24:43,601 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-02 05:24:43,601 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 05:24:43,601 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 05:24:43,601 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 05:24:43,601 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 05:24:43,602 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 05:24:43,602 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 05:24:43,602 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 05:24:43,602 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:24:43,602 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 05:24:43,602 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 05:24:43,602 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 05:24:43,603 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 05:24:43,603 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 05:24:43,603 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 05:24:43,603 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_77913d59-c108-4d26-b726-1e2c06330bbf/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 -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2018-12-02 05:24:43,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 05:24:43,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 05:24:43,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 05:24:43,636 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 05:24:43,636 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 05:24:43,636 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/NonTermination4_false-no-overflow.c [2018-12-02 05:24:43,671 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/data/b10dd7423/1ecfa263ebc84e228e1fc333e7fa1a73/FLAGf5ffe2315 [2018-12-02 05:24:43,949 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 05:24:43,950 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/sv-benchmarks/c/termination-crafted/NonTermination4_false-no-overflow.c [2018-12-02 05:24:43,953 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/data/b10dd7423/1ecfa263ebc84e228e1fc333e7fa1a73/FLAGf5ffe2315 [2018-12-02 05:24:43,961 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/data/b10dd7423/1ecfa263ebc84e228e1fc333e7fa1a73 [2018-12-02 05:24:43,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 05:24:43,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 05:24:43,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 05:24:43,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 05:24:43,967 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 05:24:43,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:24:43" (1/1) ... [2018-12-02 05:24:43,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489644d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:43, skipping insertion in model container [2018-12-02 05:24:43,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:24:43" (1/1) ... [2018-12-02 05:24:43,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 05:24:43,982 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 05:24:44,062 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:24:44,065 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 05:24:44,073 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:24:44,080 INFO L195 MainTranslator]: Completed translation [2018-12-02 05:24:44,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44 WrapperNode [2018-12-02 05:24:44,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 05:24:44,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 05:24:44,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 05:24:44,081 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 05:24:44,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44" (1/1) ... [2018-12-02 05:24:44,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44" (1/1) ... [2018-12-02 05:24:44,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 05:24:44,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 05:24:44,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 05:24:44,092 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 05:24:44,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44" (1/1) ... [2018-12-02 05:24:44,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44" (1/1) ... [2018-12-02 05:24:44,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44" (1/1) ... [2018-12-02 05:24:44,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44" (1/1) ... [2018-12-02 05:24:44,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44" (1/1) ... [2018-12-02 05:24:44,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44" (1/1) ... [2018-12-02 05:24:44,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44" (1/1) ... [2018-12-02 05:24:44,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 05:24:44,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 05:24:44,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 05:24:44,103 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 05:24:44,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 05:24:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 05:24:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 05:24:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 05:24:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 05:24:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 05:24:44,243 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 05:24:44,244 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 05:24:44,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:24:44 BoogieIcfgContainer [2018-12-02 05:24:44,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 05:24:44,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 05:24:44,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 05:24:44,247 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 05:24:44,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:24:43" (1/3) ... [2018-12-02 05:24:44,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ace9a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:24:44, skipping insertion in model container [2018-12-02 05:24:44,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:24:44" (2/3) ... [2018-12-02 05:24:44,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ace9a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:24:44, skipping insertion in model container [2018-12-02 05:24:44,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:24:44" (3/3) ... [2018-12-02 05:24:44,249 INFO L112 eAbstractionObserver]: Analyzing ICFG NonTermination4_false-no-overflow.c [2018-12-02 05:24:44,254 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 05:24:44,258 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-02 05:24:44,267 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-02 05:24:44,286 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 05:24:44,287 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 05:24:44,287 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 05:24:44,287 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 05:24:44,287 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 05:24:44,287 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 05:24:44,287 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 05:24:44,287 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 05:24:44,287 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 05:24:44,298 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-02 05:24:44,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 05:24:44,301 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:44,302 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:44,304 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:44,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:44,308 INFO L82 PathProgramCache]: Analyzing trace with hash -37667266, now seen corresponding path program 1 times [2018-12-02 05:24:44,309 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:44,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:44,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:44,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:24:44,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 05:24:44,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 05:24:44,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 05:24:44,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 05:24:44,403 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2018-12-02 05:24:44,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:44,428 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-12-02 05:24:44,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 05:24:44,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-12-02 05:24:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:44,434 INFO L225 Difference]: With dead ends: 28 [2018-12-02 05:24:44,434 INFO L226 Difference]: Without dead ends: 17 [2018-12-02 05:24:44,436 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 05:24:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-02 05:24:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2018-12-02 05:24:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-02 05:24:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-02 05:24:44,456 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2018-12-02 05:24:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:44,456 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-02 05:24:44,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 05:24:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-02 05:24:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-02 05:24:44,456 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:44,457 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:44,457 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:44,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:44,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1167685199, now seen corresponding path program 1 times [2018-12-02 05:24:44,457 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:44,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:44,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:44,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:24:44,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 05:24:44,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 05:24:44,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 05:24:44,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 05:24:44,474 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2018-12-02 05:24:44,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:44,496 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-12-02 05:24:44,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 05:24:44,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-02 05:24:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:44,496 INFO L225 Difference]: With dead ends: 16 [2018-12-02 05:24:44,497 INFO L226 Difference]: Without dead ends: 15 [2018-12-02 05:24:44,497 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 05:24:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-02 05:24:44,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-02 05:24:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-02 05:24:44,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-02 05:24:44,500 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2018-12-02 05:24:44,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:44,500 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-02 05:24:44,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 05:24:44,501 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-02 05:24:44,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 05:24:44,501 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:44,501 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:44,501 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:44,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:44,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1838502752, now seen corresponding path program 1 times [2018-12-02 05:24:44,502 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:44,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:44,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:44,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:24:44,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 05:24:44,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 05:24:44,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 05:24:44,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 05:24:44,520 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2018-12-02 05:24:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:44,529 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-12-02 05:24:44,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 05:24:44,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-02 05:24:44,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:44,530 INFO L225 Difference]: With dead ends: 19 [2018-12-02 05:24:44,530 INFO L226 Difference]: Without dead ends: 18 [2018-12-02 05:24:44,530 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 05:24:44,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-02 05:24:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-12-02 05:24:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-02 05:24:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-02 05:24:44,533 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2018-12-02 05:24:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:44,533 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-02 05:24:44,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 05:24:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-02 05:24:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 05:24:44,534 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:44,534 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:44,534 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:44,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:44,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1159010413, now seen corresponding path program 1 times [2018-12-02 05:24:44,534 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:44,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:44,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:44,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:24:44,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 05:24:44,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 05:24:44,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 05:24:44,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 05:24:44,548 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2018-12-02 05:24:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:44,555 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-12-02 05:24:44,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 05:24:44,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-02 05:24:44,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:44,556 INFO L225 Difference]: With dead ends: 17 [2018-12-02 05:24:44,556 INFO L226 Difference]: Without dead ends: 16 [2018-12-02 05:24:44,556 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 05:24:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-02 05:24:44,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-02 05:24:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-02 05:24:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-02 05:24:44,558 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2018-12-02 05:24:44,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:44,558 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-02 05:24:44,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 05:24:44,558 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-02 05:24:44,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-02 05:24:44,559 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:44,559 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:44,559 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:44,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:44,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1412475851, now seen corresponding path program 1 times [2018-12-02 05:24:44,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:44,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:44,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:44,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:44,580 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:44,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:44,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:44,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-12-02 05:24:44,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:24:44,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:24:44,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:24:44,637 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2018-12-02 05:24:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:44,651 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-12-02 05:24:44,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:24:44,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-12-02 05:24:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:44,652 INFO L225 Difference]: With dead ends: 21 [2018-12-02 05:24:44,652 INFO L226 Difference]: Without dead ends: 20 [2018-12-02 05:24:44,652 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:24:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-02 05:24:44,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-12-02 05:24:44,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-02 05:24:44,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-12-02 05:24:44,654 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2018-12-02 05:24:44,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:44,654 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-12-02 05:24:44,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:24:44,654 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-12-02 05:24:44,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 05:24:44,655 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:44,655 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:44,655 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:44,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:44,655 INFO L82 PathProgramCache]: Analyzing trace with hash -179625769, now seen corresponding path program 1 times [2018-12-02 05:24:44,655 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:44,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:44,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:44,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:44,676 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:44,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:44,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:44,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-12-02 05:24:44,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:24:44,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:24:44,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:24:44,715 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2018-12-02 05:24:44,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:44,726 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-12-02 05:24:44,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:24:44,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-02 05:24:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:44,726 INFO L225 Difference]: With dead ends: 23 [2018-12-02 05:24:44,726 INFO L226 Difference]: Without dead ends: 22 [2018-12-02 05:24:44,727 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:24:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-02 05:24:44,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-12-02 05:24:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-02 05:24:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-12-02 05:24:44,729 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2018-12-02 05:24:44,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:44,729 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-12-02 05:24:44,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:24:44,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-12-02 05:24:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 05:24:44,729 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:44,730 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:44,730 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:44,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:44,730 INFO L82 PathProgramCache]: Analyzing trace with hash 298016926, now seen corresponding path program 2 times [2018-12-02 05:24:44,730 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:44,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:44,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:44,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:44,753 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:44,759 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 05:24:44,765 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 05:24:44,765 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:44,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,797 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:44,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-12-02 05:24:44,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 05:24:44,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 05:24:44,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:24:44,798 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 5 states. [2018-12-02 05:24:44,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:44,812 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-12-02 05:24:44,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 05:24:44,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-02 05:24:44,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:44,813 INFO L225 Difference]: With dead ends: 26 [2018-12-02 05:24:44,813 INFO L226 Difference]: Without dead ends: 25 [2018-12-02 05:24:44,813 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:24:44,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-02 05:24:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-12-02 05:24:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 05:24:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-12-02 05:24:44,816 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2018-12-02 05:24:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:44,816 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-12-02 05:24:44,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 05:24:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-12-02 05:24:44,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 05:24:44,816 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:44,816 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:44,817 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:44,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:44,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1368541440, now seen corresponding path program 2 times [2018-12-02 05:24:44,817 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:44,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:44,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:44,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:44,837 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:44,844 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 05:24:44,848 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 05:24:44,848 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:44,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,882 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:44,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-12-02 05:24:44,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 05:24:44,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 05:24:44,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:24:44,883 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 5 states. [2018-12-02 05:24:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:44,894 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-12-02 05:24:44,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 05:24:44,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-02 05:24:44,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:44,895 INFO L225 Difference]: With dead ends: 28 [2018-12-02 05:24:44,895 INFO L226 Difference]: Without dead ends: 27 [2018-12-02 05:24:44,895 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:24:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-02 05:24:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-12-02 05:24:44,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-02 05:24:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-12-02 05:24:44,897 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 19 [2018-12-02 05:24:44,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:44,897 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-12-02 05:24:44,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 05:24:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-12-02 05:24:44,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 05:24:44,898 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:44,898 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:44,898 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:44,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:44,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1906552277, now seen corresponding path program 3 times [2018-12-02 05:24:44,898 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:44,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:44,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:44,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:44,923 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:44,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 05:24:44,941 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-02 05:24:44,941 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:44,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:44,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:44,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-02 05:24:44,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 05:24:44,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 05:24:44,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:24:44,980 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 6 states. [2018-12-02 05:24:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:44,999 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-12-02 05:24:44,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 05:24:44,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-12-02 05:24:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:45,000 INFO L225 Difference]: With dead ends: 31 [2018-12-02 05:24:45,000 INFO L226 Difference]: Without dead ends: 30 [2018-12-02 05:24:45,000 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:24:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-02 05:24:45,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-12-02 05:24:45,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-02 05:24:45,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-12-02 05:24:45,003 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 22 [2018-12-02 05:24:45,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:45,003 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-12-02 05:24:45,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 05:24:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-12-02 05:24:45,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-02 05:24:45,004 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:45,004 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:45,004 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:45,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:45,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1754295689, now seen corresponding path program 3 times [2018-12-02 05:24:45,004 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:45,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:45,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:45,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:45,048 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:45,054 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 05:24:45,060 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-02 05:24:45,060 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:45,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:45,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-02 05:24:45,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 05:24:45,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 05:24:45,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:24:45,096 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 6 states. [2018-12-02 05:24:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:45,110 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-12-02 05:24:45,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 05:24:45,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-12-02 05:24:45,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:45,111 INFO L225 Difference]: With dead ends: 33 [2018-12-02 05:24:45,111 INFO L226 Difference]: Without dead ends: 32 [2018-12-02 05:24:45,111 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:24:45,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-02 05:24:45,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-12-02 05:24:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-02 05:24:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-12-02 05:24:45,113 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 24 [2018-12-02 05:24:45,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:45,114 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-12-02 05:24:45,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 05:24:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-12-02 05:24:45,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 05:24:45,114 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:45,114 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:45,114 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:45,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:45,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1060762882, now seen corresponding path program 4 times [2018-12-02 05:24:45,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:45,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:45,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:45,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:45,143 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:45,149 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 05:24:45,155 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 05:24:45,155 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:45,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,200 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:45,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-02 05:24:45,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 05:24:45,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 05:24:45,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-02 05:24:45,201 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 7 states. [2018-12-02 05:24:45,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:45,224 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-12-02 05:24:45,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 05:24:45,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-12-02 05:24:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:45,225 INFO L225 Difference]: With dead ends: 36 [2018-12-02 05:24:45,225 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 05:24:45,225 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-02 05:24:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 05:24:45,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-12-02 05:24:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 05:24:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-12-02 05:24:45,228 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 27 [2018-12-02 05:24:45,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:45,228 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-12-02 05:24:45,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 05:24:45,228 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-12-02 05:24:45,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 05:24:45,229 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:45,229 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:45,229 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:45,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:45,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1485878944, now seen corresponding path program 4 times [2018-12-02 05:24:45,229 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:45,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:45,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:45,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:45,266 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:45,272 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 05:24:45,278 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 05:24:45,278 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:45,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:45,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-02 05:24:45,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 05:24:45,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 05:24:45,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-02 05:24:45,322 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 7 states. [2018-12-02 05:24:45,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:45,336 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-12-02 05:24:45,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 05:24:45,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-12-02 05:24:45,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:45,337 INFO L225 Difference]: With dead ends: 38 [2018-12-02 05:24:45,337 INFO L226 Difference]: Without dead ends: 37 [2018-12-02 05:24:45,337 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-02 05:24:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-02 05:24:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2018-12-02 05:24:45,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-02 05:24:45,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-12-02 05:24:45,339 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 29 [2018-12-02 05:24:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:45,340 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-12-02 05:24:45,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 05:24:45,340 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-12-02 05:24:45,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 05:24:45,340 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:45,340 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:45,340 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:45,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:45,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1886617739, now seen corresponding path program 5 times [2018-12-02 05:24:45,341 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:45,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:45,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:45,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:45,380 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:45,386 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 05:24:45,395 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-02 05:24:45,395 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:45,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:45,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-02 05:24:45,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 05:24:45,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 05:24:45,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:24:45,444 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 8 states. [2018-12-02 05:24:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:45,467 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-12-02 05:24:45,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:24:45,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-02 05:24:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:45,467 INFO L225 Difference]: With dead ends: 41 [2018-12-02 05:24:45,467 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 05:24:45,468 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:24:45,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 05:24:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-12-02 05:24:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-02 05:24:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-12-02 05:24:45,470 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 32 [2018-12-02 05:24:45,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:45,470 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-12-02 05:24:45,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 05:24:45,470 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-12-02 05:24:45,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-02 05:24:45,471 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:45,471 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:45,471 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:45,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:45,471 INFO L82 PathProgramCache]: Analyzing trace with hash -563446761, now seen corresponding path program 5 times [2018-12-02 05:24:45,471 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:45,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:45,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:45,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:45,510 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:45,515 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 05:24:45,523 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-02 05:24:45,523 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:45,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:45,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-02 05:24:45,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 05:24:45,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 05:24:45,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:24:45,569 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 8 states. [2018-12-02 05:24:45,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:45,584 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-12-02 05:24:45,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 05:24:45,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-12-02 05:24:45,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:45,584 INFO L225 Difference]: With dead ends: 43 [2018-12-02 05:24:45,584 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 05:24:45,585 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-02 05:24:45,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 05:24:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-12-02 05:24:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 05:24:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-12-02 05:24:45,587 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2018-12-02 05:24:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:45,587 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-12-02 05:24:45,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 05:24:45,587 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-12-02 05:24:45,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 05:24:45,587 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:45,588 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:45,588 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:45,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:45,588 INFO L82 PathProgramCache]: Analyzing trace with hash -910213794, now seen corresponding path program 6 times [2018-12-02 05:24:45,588 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:45,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:45,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:45,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:45,632 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:45,640 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 05:24:45,647 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-12-02 05:24:45,647 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:45,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,704 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:45,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-12-02 05:24:45,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 05:24:45,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 05:24:45,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-02 05:24:45,704 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 9 states. [2018-12-02 05:24:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:45,726 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-12-02 05:24:45,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 05:24:45,727 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-12-02 05:24:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:45,727 INFO L225 Difference]: With dead ends: 46 [2018-12-02 05:24:45,727 INFO L226 Difference]: Without dead ends: 45 [2018-12-02 05:24:45,727 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-02 05:24:45,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-02 05:24:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2018-12-02 05:24:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 05:24:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-12-02 05:24:45,730 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 37 [2018-12-02 05:24:45,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:45,730 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-12-02 05:24:45,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 05:24:45,730 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-12-02 05:24:45,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-02 05:24:45,731 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:45,731 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:45,731 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:45,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:45,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1457873856, now seen corresponding path program 6 times [2018-12-02 05:24:45,731 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:45,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:45,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:45,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:45,771 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:45,777 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 05:24:45,786 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-12-02 05:24:45,786 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:45,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:45,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-12-02 05:24:45,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 05:24:45,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 05:24:45,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-02 05:24:45,844 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 9 states. [2018-12-02 05:24:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:45,865 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-12-02 05:24:45,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 05:24:45,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-12-02 05:24:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:45,865 INFO L225 Difference]: With dead ends: 48 [2018-12-02 05:24:45,866 INFO L226 Difference]: Without dead ends: 47 [2018-12-02 05:24:45,866 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-02 05:24:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-02 05:24:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2018-12-02 05:24:45,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-02 05:24:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-12-02 05:24:45,868 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 39 [2018-12-02 05:24:45,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:45,869 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-12-02 05:24:45,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 05:24:45,869 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-12-02 05:24:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-02 05:24:45,869 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:45,869 INFO L402 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:45,870 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:45,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:45,870 INFO L82 PathProgramCache]: Analyzing trace with hash 810797333, now seen corresponding path program 7 times [2018-12-02 05:24:45,870 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:45,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:45,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:45,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:45,913 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:45,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:45,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:45,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:45,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-12-02 05:24:45,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 05:24:45,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 05:24:45,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-02 05:24:45,998 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 10 states. [2018-12-02 05:24:46,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:46,018 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-12-02 05:24:46,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 05:24:46,018 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-12-02 05:24:46,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:46,019 INFO L225 Difference]: With dead ends: 51 [2018-12-02 05:24:46,019 INFO L226 Difference]: Without dead ends: 50 [2018-12-02 05:24:46,019 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-02 05:24:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-02 05:24:46,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2018-12-02 05:24:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-12-02 05:24:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-12-02 05:24:46,021 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2018-12-02 05:24:46,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:46,021 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-12-02 05:24:46,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 05:24:46,022 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-12-02 05:24:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-12-02 05:24:46,022 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:46,022 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:46,022 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:46,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:46,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1787157943, now seen corresponding path program 7 times [2018-12-02 05:24:46,022 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:46,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:46,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:46,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:46,065 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:46,065 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:46,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:46,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:46,161 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:46,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-12-02 05:24:46,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 05:24:46,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 05:24:46,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-02 05:24:46,162 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 10 states. [2018-12-02 05:24:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:46,178 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-12-02 05:24:46,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 05:24:46,178 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2018-12-02 05:24:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:46,179 INFO L225 Difference]: With dead ends: 53 [2018-12-02 05:24:46,179 INFO L226 Difference]: Without dead ends: 52 [2018-12-02 05:24:46,179 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-02 05:24:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-02 05:24:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-12-02 05:24:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-12-02 05:24:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-12-02 05:24:46,182 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 44 [2018-12-02 05:24:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:46,182 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-12-02 05:24:46,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 05:24:46,182 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-12-02 05:24:46,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-02 05:24:46,183 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:46,183 INFO L402 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:46,183 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:46,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:46,183 INFO L82 PathProgramCache]: Analyzing trace with hash 807729086, now seen corresponding path program 8 times [2018-12-02 05:24:46,183 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:46,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:46,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:46,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:46,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:46,226 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:46,231 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 05:24:46,238 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 05:24:46,238 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:46,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:46,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:46,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-12-02 05:24:46,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 05:24:46,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 05:24:46,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:24:46,309 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 11 states. [2018-12-02 05:24:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:46,331 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-12-02 05:24:46,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 05:24:46,331 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2018-12-02 05:24:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:46,332 INFO L225 Difference]: With dead ends: 56 [2018-12-02 05:24:46,332 INFO L226 Difference]: Without dead ends: 55 [2018-12-02 05:24:46,332 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:24:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-02 05:24:46,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2018-12-02 05:24:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-12-02 05:24:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-12-02 05:24:46,334 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 47 [2018-12-02 05:24:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:46,334 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-12-02 05:24:46,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 05:24:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-12-02 05:24:46,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-02 05:24:46,335 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:46,335 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:46,335 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:46,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:46,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1161427424, now seen corresponding path program 8 times [2018-12-02 05:24:46,335 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:46,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:46,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:46,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:46,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:46,376 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:46,384 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 05:24:46,391 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 05:24:46,391 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:46,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:46,472 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:46,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-12-02 05:24:46,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 05:24:46,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 05:24:46,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:24:46,473 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 11 states. [2018-12-02 05:24:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:46,502 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-12-02 05:24:46,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 05:24:46,502 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2018-12-02 05:24:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:46,502 INFO L225 Difference]: With dead ends: 58 [2018-12-02 05:24:46,502 INFO L226 Difference]: Without dead ends: 57 [2018-12-02 05:24:46,503 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:24:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-12-02 05:24:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-12-02 05:24:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-02 05:24:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-12-02 05:24:46,505 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 49 [2018-12-02 05:24:46,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:46,505 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-12-02 05:24:46,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 05:24:46,505 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-12-02 05:24:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-12-02 05:24:46,505 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:46,506 INFO L402 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:46,506 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:46,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:46,506 INFO L82 PathProgramCache]: Analyzing trace with hash 172198581, now seen corresponding path program 9 times [2018-12-02 05:24:46,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:46,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:46,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:46,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:46,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:46,552 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:46,560 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 05:24:46,572 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-12-02 05:24:46,572 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:46,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:46,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:46,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-12-02 05:24:46,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 05:24:46,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 05:24:46,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-02 05:24:46,661 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 12 states. [2018-12-02 05:24:46,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:46,688 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-12-02 05:24:46,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 05:24:46,688 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2018-12-02 05:24:46,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:46,689 INFO L225 Difference]: With dead ends: 61 [2018-12-02 05:24:46,689 INFO L226 Difference]: Without dead ends: 60 [2018-12-02 05:24:46,689 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-02 05:24:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-02 05:24:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2018-12-02 05:24:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-02 05:24:46,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-12-02 05:24:46,691 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 52 [2018-12-02 05:24:46,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:46,691 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-12-02 05:24:46,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 05:24:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-12-02 05:24:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-12-02 05:24:46,691 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:46,692 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:46,692 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:46,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:46,692 INFO L82 PathProgramCache]: Analyzing trace with hash -2020886697, now seen corresponding path program 9 times [2018-12-02 05:24:46,692 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:46,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:46,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,693 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:46,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:46,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:46,742 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:46,748 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 05:24:46,760 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-12-02 05:24:46,760 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:46,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:46,854 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:46,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-12-02 05:24:46,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 05:24:46,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 05:24:46,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-02 05:24:46,855 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 12 states. [2018-12-02 05:24:46,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:46,873 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-12-02 05:24:46,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 05:24:46,873 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2018-12-02 05:24:46,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:46,873 INFO L225 Difference]: With dead ends: 63 [2018-12-02 05:24:46,873 INFO L226 Difference]: Without dead ends: 62 [2018-12-02 05:24:46,874 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-02 05:24:46,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-12-02 05:24:46,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-12-02 05:24:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-12-02 05:24:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-12-02 05:24:46,877 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 54 [2018-12-02 05:24:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:46,877 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-12-02 05:24:46,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 05:24:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-12-02 05:24:46,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-02 05:24:46,878 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:46,878 INFO L402 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:46,878 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:46,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:46,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1678951906, now seen corresponding path program 10 times [2018-12-02 05:24:46,878 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:46,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:46,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,879 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:46,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:46,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:46,949 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:46,955 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 05:24:46,962 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 05:24:46,962 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:46,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:47,047 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:47,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:47,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-12-02 05:24:47,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-02 05:24:47,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-02 05:24:47,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-12-02 05:24:47,062 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 13 states. [2018-12-02 05:24:47,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:47,089 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-12-02 05:24:47,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-02 05:24:47,089 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2018-12-02 05:24:47,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:47,090 INFO L225 Difference]: With dead ends: 66 [2018-12-02 05:24:47,090 INFO L226 Difference]: Without dead ends: 65 [2018-12-02 05:24:47,090 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-12-02 05:24:47,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-02 05:24:47,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2018-12-02 05:24:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-12-02 05:24:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-12-02 05:24:47,092 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 57 [2018-12-02 05:24:47,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:47,092 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-12-02 05:24:47,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-02 05:24:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-12-02 05:24:47,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-12-02 05:24:47,093 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:47,093 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:47,093 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:47,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:47,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1434923136, now seen corresponding path program 10 times [2018-12-02 05:24:47,093 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:47,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:47,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:47,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:47,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:47,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:47,155 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:47,161 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 05:24:47,169 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 05:24:47,170 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:47,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:47,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:47,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-12-02 05:24:47,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-02 05:24:47,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-02 05:24:47,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-12-02 05:24:47,277 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 13 states. [2018-12-02 05:24:47,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:47,298 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-12-02 05:24:47,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-02 05:24:47,299 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2018-12-02 05:24:47,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:47,299 INFO L225 Difference]: With dead ends: 68 [2018-12-02 05:24:47,299 INFO L226 Difference]: Without dead ends: 67 [2018-12-02 05:24:47,300 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-12-02 05:24:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-12-02 05:24:47,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2018-12-02 05:24:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-12-02 05:24:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-12-02 05:24:47,302 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 59 [2018-12-02 05:24:47,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:47,303 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-12-02 05:24:47,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-02 05:24:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-12-02 05:24:47,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-12-02 05:24:47,303 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:47,303 INFO L402 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:47,304 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:47,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:47,304 INFO L82 PathProgramCache]: Analyzing trace with hash -14302123, now seen corresponding path program 11 times [2018-12-02 05:24:47,304 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:47,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:47,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:47,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:47,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:47,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:47,386 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:47,392 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 05:24:47,402 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-12-02 05:24:47,402 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:47,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:47,503 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:47,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-12-02 05:24:47,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-02 05:24:47,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-02 05:24:47,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-02 05:24:47,503 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 14 states. [2018-12-02 05:24:47,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:47,529 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-12-02 05:24:47,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-02 05:24:47,529 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2018-12-02 05:24:47,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:47,530 INFO L225 Difference]: With dead ends: 71 [2018-12-02 05:24:47,530 INFO L226 Difference]: Without dead ends: 70 [2018-12-02 05:24:47,530 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-02 05:24:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-12-02 05:24:47,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2018-12-02 05:24:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-12-02 05:24:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-12-02 05:24:47,533 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 62 [2018-12-02 05:24:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:47,533 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-12-02 05:24:47,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-02 05:24:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-12-02 05:24:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-12-02 05:24:47,533 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:47,533 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:47,534 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:47,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:47,534 INFO L82 PathProgramCache]: Analyzing trace with hash -859436809, now seen corresponding path program 11 times [2018-12-02 05:24:47,534 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:47,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:47,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:47,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:47,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:47,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:47,600 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:47,606 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 05:24:47,619 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-12-02 05:24:47,619 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:47,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:47,717 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:47,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:47,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-12-02 05:24:47,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-02 05:24:47,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-02 05:24:47,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-02 05:24:47,733 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 14 states. [2018-12-02 05:24:47,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:47,756 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-12-02 05:24:47,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-02 05:24:47,756 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2018-12-02 05:24:47,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:47,756 INFO L225 Difference]: With dead ends: 73 [2018-12-02 05:24:47,756 INFO L226 Difference]: Without dead ends: 72 [2018-12-02 05:24:47,756 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-02 05:24:47,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-12-02 05:24:47,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2018-12-02 05:24:47,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-12-02 05:24:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-12-02 05:24:47,758 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 64 [2018-12-02 05:24:47,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:47,758 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-12-02 05:24:47,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-02 05:24:47,758 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-12-02 05:24:47,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-12-02 05:24:47,759 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:47,759 INFO L402 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:47,759 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:47,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:47,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1181875074, now seen corresponding path program 12 times [2018-12-02 05:24:47,759 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:47,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:47,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:47,760 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:47,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:47,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:47,824 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:47,832 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 05:24:47,843 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-12-02 05:24:47,843 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:47,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:47,973 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:47,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-12-02 05:24:47,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-02 05:24:47,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-02 05:24:47,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-02 05:24:47,973 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 15 states. [2018-12-02 05:24:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:48,001 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-12-02 05:24:48,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-02 05:24:48,001 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2018-12-02 05:24:48,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:48,001 INFO L225 Difference]: With dead ends: 76 [2018-12-02 05:24:48,001 INFO L226 Difference]: Without dead ends: 75 [2018-12-02 05:24:48,002 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-02 05:24:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-12-02 05:24:48,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2018-12-02 05:24:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-12-02 05:24:48,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-12-02 05:24:48,003 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 67 [2018-12-02 05:24:48,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:48,003 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-12-02 05:24:48,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-02 05:24:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-12-02 05:24:48,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-12-02 05:24:48,004 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:48,004 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:48,004 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:48,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:48,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1910578464, now seen corresponding path program 12 times [2018-12-02 05:24:48,004 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:48,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:48,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:48,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:48,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:48,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:48,081 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:48,089 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 05:24:48,103 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-12-02 05:24:48,103 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:48,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:48,223 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:48,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-12-02 05:24:48,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-02 05:24:48,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-02 05:24:48,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-02 05:24:48,224 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 15 states. [2018-12-02 05:24:48,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:48,247 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-12-02 05:24:48,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-02 05:24:48,248 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2018-12-02 05:24:48,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:48,248 INFO L225 Difference]: With dead ends: 78 [2018-12-02 05:24:48,248 INFO L226 Difference]: Without dead ends: 77 [2018-12-02 05:24:48,248 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-02 05:24:48,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-12-02 05:24:48,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2018-12-02 05:24:48,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-12-02 05:24:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-12-02 05:24:48,250 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 69 [2018-12-02 05:24:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:48,251 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-12-02 05:24:48,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-02 05:24:48,251 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-12-02 05:24:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-12-02 05:24:48,251 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:48,251 INFO L402 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:48,252 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:48,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:48,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1136364043, now seen corresponding path program 13 times [2018-12-02 05:24:48,252 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:48,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:48,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:48,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:48,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:48,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:48,334 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:48,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:48,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:48,472 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:48,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-12-02 05:24:48,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-02 05:24:48,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-02 05:24:48,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-02 05:24:48,473 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 16 states. [2018-12-02 05:24:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:48,499 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-12-02 05:24:48,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-02 05:24:48,499 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 72 [2018-12-02 05:24:48,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:48,499 INFO L225 Difference]: With dead ends: 81 [2018-12-02 05:24:48,499 INFO L226 Difference]: Without dead ends: 80 [2018-12-02 05:24:48,500 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-02 05:24:48,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-12-02 05:24:48,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2018-12-02 05:24:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-12-02 05:24:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-12-02 05:24:48,502 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 72 [2018-12-02 05:24:48,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:48,503 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-12-02 05:24:48,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-02 05:24:48,503 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-12-02 05:24:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-12-02 05:24:48,503 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:48,503 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:48,503 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:48,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:48,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1124150633, now seen corresponding path program 13 times [2018-12-02 05:24:48,504 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:48,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:48,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:48,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:48,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:48,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:48,576 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:48,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:48,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:48,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:48,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-12-02 05:24:48,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-02 05:24:48,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-02 05:24:48,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-02 05:24:48,733 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 16 states. [2018-12-02 05:24:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:48,759 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-12-02 05:24:48,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-02 05:24:48,759 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2018-12-02 05:24:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:48,760 INFO L225 Difference]: With dead ends: 83 [2018-12-02 05:24:48,760 INFO L226 Difference]: Without dead ends: 82 [2018-12-02 05:24:48,760 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-02 05:24:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-12-02 05:24:48,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2018-12-02 05:24:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-12-02 05:24:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-12-02 05:24:48,762 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 74 [2018-12-02 05:24:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:48,763 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-12-02 05:24:48,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-02 05:24:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-12-02 05:24:48,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-12-02 05:24:48,763 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:48,763 INFO L402 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:48,763 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:48,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:48,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1711450402, now seen corresponding path program 14 times [2018-12-02 05:24:48,764 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:48,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:48,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:48,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:48,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:48,871 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:48,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:48,871 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:48,877 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 05:24:48,885 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 05:24:48,885 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:48,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:49,025 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:49,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-12-02 05:24:49,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-02 05:24:49,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-02 05:24:49,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-12-02 05:24:49,026 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 17 states. [2018-12-02 05:24:49,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:49,061 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-12-02 05:24:49,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-02 05:24:49,061 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 77 [2018-12-02 05:24:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:49,061 INFO L225 Difference]: With dead ends: 86 [2018-12-02 05:24:49,061 INFO L226 Difference]: Without dead ends: 85 [2018-12-02 05:24:49,062 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 63 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-12-02 05:24:49,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-12-02 05:24:49,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2018-12-02 05:24:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-12-02 05:24:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-12-02 05:24:49,063 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 77 [2018-12-02 05:24:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:49,064 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-12-02 05:24:49,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-02 05:24:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-12-02 05:24:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-02 05:24:49,064 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:49,064 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:49,064 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:49,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:49,064 INFO L82 PathProgramCache]: Analyzing trace with hash 268639552, now seen corresponding path program 14 times [2018-12-02 05:24:49,064 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:49,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:49,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:49,065 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:49,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:49,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:49,141 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:49,147 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 05:24:49,155 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 05:24:49,155 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:49,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:49,293 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:49,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-12-02 05:24:49,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-02 05:24:49,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-02 05:24:49,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-12-02 05:24:49,294 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 17 states. [2018-12-02 05:24:49,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:49,322 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-12-02 05:24:49,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-02 05:24:49,323 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2018-12-02 05:24:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:49,323 INFO L225 Difference]: With dead ends: 88 [2018-12-02 05:24:49,323 INFO L226 Difference]: Without dead ends: 87 [2018-12-02 05:24:49,323 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 65 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-12-02 05:24:49,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-12-02 05:24:49,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2018-12-02 05:24:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-12-02 05:24:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-12-02 05:24:49,325 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 79 [2018-12-02 05:24:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:49,325 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-12-02 05:24:49,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-02 05:24:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-12-02 05:24:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-12-02 05:24:49,325 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:49,326 INFO L402 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:49,326 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:49,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:49,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1516871573, now seen corresponding path program 15 times [2018-12-02 05:24:49,326 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:49,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:49,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:49,326 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:49,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:49,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:49,406 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/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 [2018-12-02 05:24:49,411 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 05:24:49,427 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-12-02 05:24:49,427 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:49,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:49,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:49,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-12-02 05:24:49,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-02 05:24:49,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-02 05:24:49,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-02 05:24:49,597 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 18 states. [2018-12-02 05:24:49,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:49,646 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-12-02 05:24:49,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-02 05:24:49,646 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 82 [2018-12-02 05:24:49,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:49,647 INFO L225 Difference]: With dead ends: 91 [2018-12-02 05:24:49,647 INFO L226 Difference]: Without dead ends: 90 [2018-12-02 05:24:49,647 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-02 05:24:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-12-02 05:24:49,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2018-12-02 05:24:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-12-02 05:24:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-12-02 05:24:49,649 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 82 [2018-12-02 05:24:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:49,649 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-12-02 05:24:49,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-02 05:24:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-12-02 05:24:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-12-02 05:24:49,649 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:49,649 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:49,650 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:49,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:49,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1719669815, now seen corresponding path program 15 times [2018-12-02 05:24:49,650 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:49,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:49,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:49,651 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:49,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:49,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:49,743 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 05:24:49,749 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 05:24:49,764 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-12-02 05:24:49,764 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:49,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:49,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:49,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-12-02 05:24:49,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-02 05:24:49,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-02 05:24:49,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-02 05:24:49,940 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 18 states. [2018-12-02 05:24:49,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:49,964 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-12-02 05:24:49,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-02 05:24:49,965 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 84 [2018-12-02 05:24:49,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:49,965 INFO L225 Difference]: With dead ends: 93 [2018-12-02 05:24:49,965 INFO L226 Difference]: Without dead ends: 92 [2018-12-02 05:24:49,965 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-02 05:24:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-12-02 05:24:49,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2018-12-02 05:24:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-12-02 05:24:49,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-12-02 05:24:49,967 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 84 [2018-12-02 05:24:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:49,967 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-12-02 05:24:49,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-02 05:24:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-12-02 05:24:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-12-02 05:24:49,968 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:49,968 INFO L402 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:49,968 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:49,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:49,968 INFO L82 PathProgramCache]: Analyzing trace with hash 313602366, now seen corresponding path program 16 times [2018-12-02 05:24:49,968 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:49,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:49,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:49,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:49,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:50,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:50,087 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 05:24:50,093 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 05:24:50,103 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 05:24:50,103 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:50,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:50,299 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:50,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-12-02 05:24:50,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-02 05:24:50,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-02 05:24:50,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-12-02 05:24:50,300 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 19 states. [2018-12-02 05:24:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:50,344 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-12-02 05:24:50,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-02 05:24:50,344 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 87 [2018-12-02 05:24:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:50,345 INFO L225 Difference]: With dead ends: 96 [2018-12-02 05:24:50,345 INFO L226 Difference]: Without dead ends: 95 [2018-12-02 05:24:50,345 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-12-02 05:24:50,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-12-02 05:24:50,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2018-12-02 05:24:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-12-02 05:24:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-12-02 05:24:50,347 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 87 [2018-12-02 05:24:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:50,348 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-12-02 05:24:50,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-02 05:24:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-12-02 05:24:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-12-02 05:24:50,348 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:50,348 INFO L402 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:50,349 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:50,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:50,349 INFO L82 PathProgramCache]: Analyzing trace with hash 724164512, now seen corresponding path program 16 times [2018-12-02 05:24:50,349 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:50,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:50,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:50,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:50,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:50,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:50,470 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 05:24:50,475 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 05:24:50,485 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 05:24:50,485 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:50,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:50,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:50,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-12-02 05:24:50,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-02 05:24:50,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-02 05:24:50,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-12-02 05:24:50,654 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 19 states. [2018-12-02 05:24:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:50,685 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-12-02 05:24:50,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-02 05:24:50,685 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2018-12-02 05:24:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:50,686 INFO L225 Difference]: With dead ends: 98 [2018-12-02 05:24:50,686 INFO L226 Difference]: Without dead ends: 97 [2018-12-02 05:24:50,686 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-12-02 05:24:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-12-02 05:24:50,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2018-12-02 05:24:50,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-12-02 05:24:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-12-02 05:24:50,689 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 89 [2018-12-02 05:24:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:50,689 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-12-02 05:24:50,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-02 05:24:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-12-02 05:24:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-12-02 05:24:50,690 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:50,690 INFO L402 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:50,690 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:50,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:50,691 INFO L82 PathProgramCache]: Analyzing trace with hash -35700427, now seen corresponding path program 17 times [2018-12-02 05:24:50,691 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:50,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:50,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:50,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:50,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:50,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:50,833 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 05:24:50,839 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 05:24:50,855 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-12-02 05:24:50,855 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:50,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:51,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:51,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-12-02 05:24:51,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-02 05:24:51,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-02 05:24:51,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-02 05:24:51,037 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 20 states. [2018-12-02 05:24:51,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:51,083 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-12-02 05:24:51,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-02 05:24:51,083 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 92 [2018-12-02 05:24:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:51,083 INFO L225 Difference]: With dead ends: 101 [2018-12-02 05:24:51,083 INFO L226 Difference]: Without dead ends: 100 [2018-12-02 05:24:51,084 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-02 05:24:51,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-12-02 05:24:51,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2018-12-02 05:24:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-12-02 05:24:51,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-12-02 05:24:51,085 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 92 [2018-12-02 05:24:51,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:51,086 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-12-02 05:24:51,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-02 05:24:51,086 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-12-02 05:24:51,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-12-02 05:24:51,086 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:51,086 INFO L402 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:51,086 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:51,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:51,086 INFO L82 PathProgramCache]: Analyzing trace with hash 51629527, now seen corresponding path program 17 times [2018-12-02 05:24:51,086 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:51,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:51,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:51,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:51,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:51,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:51,198 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 05:24:51,204 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 05:24:51,223 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-12-02 05:24:51,223 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:51,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:51,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:51,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-12-02 05:24:51,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-02 05:24:51,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-02 05:24:51,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-02 05:24:51,418 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 20 states. [2018-12-02 05:24:51,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:51,444 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-12-02 05:24:51,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-02 05:24:51,445 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 94 [2018-12-02 05:24:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:51,445 INFO L225 Difference]: With dead ends: 103 [2018-12-02 05:24:51,445 INFO L226 Difference]: Without dead ends: 102 [2018-12-02 05:24:51,445 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 77 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-02 05:24:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-12-02 05:24:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2018-12-02 05:24:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-12-02 05:24:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-12-02 05:24:51,448 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 94 [2018-12-02 05:24:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:51,448 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-12-02 05:24:51,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-02 05:24:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-12-02 05:24:51,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-12-02 05:24:51,448 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:51,448 INFO L402 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:51,448 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:51,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:51,449 INFO L82 PathProgramCache]: Analyzing trace with hash 496997278, now seen corresponding path program 18 times [2018-12-02 05:24:51,449 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:51,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:51,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:51,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:51,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:51,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:51,562 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 05:24:51,568 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 05:24:51,584 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-12-02 05:24:51,584 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:51,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:51,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:51,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-12-02 05:24:51,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-02 05:24:51,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-02 05:24:51,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-12-02 05:24:51,793 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 21 states. [2018-12-02 05:24:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:51,832 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-12-02 05:24:51,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-12-02 05:24:51,832 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 97 [2018-12-02 05:24:51,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:51,833 INFO L225 Difference]: With dead ends: 106 [2018-12-02 05:24:51,833 INFO L226 Difference]: Without dead ends: 105 [2018-12-02 05:24:51,833 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-12-02 05:24:51,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-12-02 05:24:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2018-12-02 05:24:51,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-12-02 05:24:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-12-02 05:24:51,837 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 97 [2018-12-02 05:24:51,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:51,837 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-12-02 05:24:51,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-02 05:24:51,837 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-12-02 05:24:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-12-02 05:24:51,838 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:51,838 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:51,838 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:51,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:51,838 INFO L82 PathProgramCache]: Analyzing trace with hash 873015808, now seen corresponding path program 18 times [2018-12-02 05:24:51,838 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:51,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:51,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:51,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:51,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:51,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:51,945 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 05:24:51,951 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 05:24:51,968 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-12-02 05:24:51,968 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:24:51,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:52,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:52,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-12-02 05:24:52,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-02 05:24:52,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-02 05:24:52,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-12-02 05:24:52,172 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 21 states. [2018-12-02 05:24:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:52,211 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-12-02 05:24:52,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-12-02 05:24:52,211 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 99 [2018-12-02 05:24:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:52,211 INFO L225 Difference]: With dead ends: 108 [2018-12-02 05:24:52,211 INFO L226 Difference]: Without dead ends: 107 [2018-12-02 05:24:52,211 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-12-02 05:24:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-12-02 05:24:52,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2018-12-02 05:24:52,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-12-02 05:24:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-12-02 05:24:52,213 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 99 [2018-12-02 05:24:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:52,213 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-12-02 05:24:52,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-02 05:24:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-12-02 05:24:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-12-02 05:24:52,214 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:52,214 INFO L402 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:52,214 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:52,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:52,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1987009237, now seen corresponding path program 19 times [2018-12-02 05:24:52,214 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:52,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:52,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:52,215 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:24:52,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:52,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:24:52,326 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 05:24:52,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:24:52,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:24:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:24:52,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 05:24:52,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-12-02 05:24:52,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-02 05:24:52,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-02 05:24:52,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-02 05:24:52,565 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 22 states. [2018-12-02 05:24:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:24:52,603 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-12-02 05:24:52,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-02 05:24:52,603 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 102 [2018-12-02 05:24:52,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:24:52,603 INFO L225 Difference]: With dead ends: 111 [2018-12-02 05:24:52,603 INFO L226 Difference]: Without dead ends: 110 [2018-12-02 05:24:52,604 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 83 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-02 05:24:52,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-12-02 05:24:52,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2018-12-02 05:24:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-12-02 05:24:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-12-02 05:24:52,605 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 102 [2018-12-02 05:24:52,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:24:52,605 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-12-02 05:24:52,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-02 05:24:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-12-02 05:24:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-12-02 05:24:52,606 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:24:52,606 INFO L402 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1] [2018-12-02 05:24:52,606 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 05:24:52,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:24:52,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1744568457, now seen corresponding path program 19 times [2018-12-02 05:24:52,606 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 05:24:52,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 05:24:52,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:52,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:24:52,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:24:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:24:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:24:52,626 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 05:24:52,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:24:52 BoogieIcfgContainer [2018-12-02 05:24:52,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 05:24:52,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 05:24:52,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 05:24:52,648 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 05:24:52,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:24:44" (3/4) ... [2018-12-02 05:24:52,650 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 05:24:52,684 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_77913d59-c108-4d26-b726-1e2c06330bbf/bin-2019/uautomizer/witness.graphml [2018-12-02 05:24:52,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 05:24:52,685 INFO L168 Benchmark]: Toolchain (without parser) took 8721.43 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 360.2 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -89.9 MB). Peak memory consumption was 270.3 MB. Max. memory is 11.5 GB. [2018-12-02 05:24:52,686 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:24:52,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.93 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 05:24:52,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.01 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:24:52,686 INFO L168 Benchmark]: Boogie Preprocessor took 10.68 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:24:52,686 INFO L168 Benchmark]: RCFGBuilder took 141.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -161.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-02 05:24:52,687 INFO L168 Benchmark]: TraceAbstraction took 8403.28 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 224.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.9 MB). Peak memory consumption was 275.9 MB. Max. memory is 11.5 GB. [2018-12-02 05:24:52,687 INFO L168 Benchmark]: Witness Printer took 36.36 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. [2018-12-02 05:24:52,688 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 115.93 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.01 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.68 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 141.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -161.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8403.28 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 224.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.9 MB). Peak memory consumption was 275.9 MB. Max. memory is 11.5 GB. * Witness Printer took 36.36 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 VAL [x=1, y=1] [L18] COND TRUE x >= 0 VAL [x=1, y=1] [L19] EXPR 2*x [L19] x = 2*x VAL [x=2, y=1] [L20] EXPR 3*y [L20] y = 3*y VAL [x=2, y=3] [L18] COND TRUE x >= 0 VAL [x=2, y=3] [L19] EXPR 2*x [L19] x = 2*x VAL [x=4, y=3] [L20] EXPR 3*y [L20] y = 3*y VAL [x=4, y=9] [L18] COND TRUE x >= 0 VAL [x=4, y=9] [L19] EXPR 2*x [L19] x = 2*x VAL [x=8, y=9] [L20] EXPR 3*y [L20] y = 3*y VAL [x=8, y=27] [L18] COND TRUE x >= 0 VAL [x=8, y=27] [L19] EXPR 2*x [L19] x = 2*x VAL [x=16, y=27] [L20] EXPR 3*y [L20] y = 3*y VAL [x=16, y=81] [L18] COND TRUE x >= 0 VAL [x=16, y=81] [L19] EXPR 2*x [L19] x = 2*x VAL [x=32, y=81] [L20] EXPR 3*y [L20] y = 3*y VAL [x=32, y=243] [L18] COND TRUE x >= 0 VAL [x=32, y=243] [L19] EXPR 2*x [L19] x = 2*x VAL [x=64, y=243] [L20] EXPR 3*y [L20] y = 3*y VAL [x=64, y=729] [L18] COND TRUE x >= 0 VAL [x=64, y=729] [L19] EXPR 2*x [L19] x = 2*x VAL [x=128, y=729] [L20] EXPR 3*y [L20] y = 3*y VAL [x=128, y=2187] [L18] COND TRUE x >= 0 VAL [x=128, y=2187] [L19] EXPR 2*x [L19] x = 2*x VAL [x=256, y=2187] [L20] EXPR 3*y [L20] y = 3*y VAL [x=256, y=6561] [L18] COND TRUE x >= 0 VAL [x=256, y=6561] [L19] EXPR 2*x [L19] x = 2*x VAL [x=512, y=6561] [L20] EXPR 3*y [L20] y = 3*y VAL [x=512, y=19683] [L18] COND TRUE x >= 0 VAL [x=512, y=19683] [L19] EXPR 2*x [L19] x = 2*x VAL [x=1024, y=19683] [L20] EXPR 3*y [L20] y = 3*y VAL [x=1024, y=59049] [L18] COND TRUE x >= 0 VAL [x=1024, y=59049] [L19] EXPR 2*x [L19] x = 2*x VAL [x=2048, y=59049] [L20] EXPR 3*y [L20] y = 3*y VAL [x=2048, y=177147] [L18] COND TRUE x >= 0 VAL [x=2048, y=177147] [L19] EXPR 2*x [L19] x = 2*x VAL [x=4096, y=177147] [L20] EXPR 3*y [L20] y = 3*y VAL [x=4096, y=531441] [L18] COND TRUE x >= 0 VAL [x=4096, y=531441] [L19] EXPR 2*x [L19] x = 2*x VAL [x=8192, y=531441] [L20] EXPR 3*y [L20] y = 3*y VAL [x=8192, y=1594323] [L18] COND TRUE x >= 0 VAL [x=8192, y=1594323] [L19] EXPR 2*x [L19] x = 2*x VAL [x=16384, y=1594323] [L20] EXPR 3*y [L20] y = 3*y VAL [x=16384, y=4782969] [L18] COND TRUE x >= 0 VAL [x=16384, y=4782969] [L19] EXPR 2*x [L19] x = 2*x VAL [x=32768, y=4782969] [L20] EXPR 3*y [L20] y = 3*y VAL [x=32768, y=14348907] [L18] COND TRUE x >= 0 VAL [x=32768, y=14348907] [L19] EXPR 2*x [L19] x = 2*x VAL [x=65536, y=14348907] [L20] EXPR 3*y [L20] y = 3*y VAL [x=65536, y=43046721] [L18] COND TRUE x >= 0 VAL [x=65536, y=43046721] [L19] EXPR 2*x [L19] x = 2*x VAL [x=131072, y=43046721] [L20] EXPR 3*y [L20] y = 3*y VAL [x=131072, y=129140163] [L18] COND TRUE x >= 0 VAL [x=131072, y=129140163] [L19] EXPR 2*x [L19] x = 2*x VAL [x=262144, y=129140163] [L20] EXPR 3*y [L20] y = 3*y VAL [x=262144, y=387420489] [L18] COND TRUE x >= 0 VAL [x=262144, y=387420489] [L19] EXPR 2*x [L19] x = 2*x VAL [x=524288, y=387420489] [L20] EXPR 3*y [L20] y = 3*y VAL [x=524288, y=1162261467] [L18] COND TRUE x >= 0 VAL [x=524288, y=1162261467] [L19] EXPR 2*x [L19] x = 2*x VAL [x=1048576, y=1162261467] [L20] 3*y VAL [x=1048576, y=1162261467] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 4 error locations. UNSAFE Result, 8.3s OverallTime, 42 OverallIterations, 20 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 393 SDtfs, 412 SDslu, 2546 SDs, 0 SdLazy, 1427 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2506 GetRequests, 1743 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 41 MinimizatonAttempts, 39 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 4338 NumberOfCodeBlocks, 4338 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 4156 ConstructedInterpolants, 0 QuantifiedInterpolants, 815788 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3913 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 0/23218 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...