./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/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 cf39454d83b4ec00341bd0b620b0fa6b2321ce21 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:38:04,681 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:38:04,682 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:38:04,688 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:38:04,688 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:38:04,689 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:38:04,690 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:38:04,691 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:38:04,692 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:38:04,693 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:38:04,694 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:38:04,694 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:38:04,695 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:38:04,696 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:38:04,697 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:38:04,697 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:38:04,698 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:38:04,699 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:38:04,701 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:38:04,702 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:38:04,703 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:38:04,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:38:04,706 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:38:04,706 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:38:04,706 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:38:04,707 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:38:04,708 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:38:04,708 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:38:04,709 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:38:04,710 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:38:04,710 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:38:04,710 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:38:04,710 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:38:04,710 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:38:04,711 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:38:04,712 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:38:04,712 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 13:38:04,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:38:04,722 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:38:04,723 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:38:04,723 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:38:04,724 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:38:04,724 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:38:04,724 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:38:04,724 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:38:04,724 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 13:38:04,724 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:38:04,725 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:38:04,725 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:38:04,725 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:38:04,725 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:38:04,725 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 13:38:04,725 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:38:04,727 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:38:04,727 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:38:04,727 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:38:04,727 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:38:04,727 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:38:04,727 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:38:04,727 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:38:04,728 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:38:04,728 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:38:04,728 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:38:04,728 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:38:04,728 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:38:04,728 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:38:04,728 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_538afd57-9da2-4c31-a46e-a18f93e04c8b/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 -> cf39454d83b4ec00341bd0b620b0fa6b2321ce21 [2018-11-18 13:38:04,753 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:38:04,761 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:38:04,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:38:04,764 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:38:04,764 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:38:04,764 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 13:38:04,801 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/data/f1b001c2c/45c529591fda4e159344249061f469ee/FLAG2009b78f1 [2018-11-18 13:38:05,098 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:38:05,099 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 13:38:05,102 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/data/f1b001c2c/45c529591fda4e159344249061f469ee/FLAG2009b78f1 [2018-11-18 13:38:05,113 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/data/f1b001c2c/45c529591fda4e159344249061f469ee [2018-11-18 13:38:05,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:38:05,116 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:38:05,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:38:05,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:38:05,118 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:38:05,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:38:05" (1/1) ... [2018-11-18 13:38:05,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3275144b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:38:05, skipping insertion in model container [2018-11-18 13:38:05,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:38:05" (1/1) ... [2018-11-18 13:38:05,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:38:05,142 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:38:05,258 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:38:05,260 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:38:05,270 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:38:05,281 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:38:05,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:38:05 WrapperNode [2018-11-18 13:38:05,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:38:05,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:38:05,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:38:05,282 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:38:05,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:38:05" (1/1) ... [2018-11-18 13:38:05,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:38:05" (1/1) ... [2018-11-18 13:38:05,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:38:05" (1/1) ... [2018-11-18 13:38:05,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:38:05" (1/1) ... [2018-11-18 13:38:05,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:38:05" (1/1) ... [2018-11-18 13:38:05,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:38:05" (1/1) ... [2018-11-18 13:38:05,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:38:05" (1/1) ... [2018-11-18 13:38:05,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:38:05,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:38:05,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:38:05,305 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:38:05,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:38:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:38:05,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:38:05,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:38:05,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:38:05,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 13:38:05,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:38:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:38:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 13:38:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:38:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:38:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:38:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:38:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 13:38:05,487 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:38:05,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:38:05 BoogieIcfgContainer [2018-11-18 13:38:05,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:38:05,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:38:05,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:38:05,490 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:38:05,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:38:05" (1/3) ... [2018-11-18 13:38:05,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c3b07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:38:05, skipping insertion in model container [2018-11-18 13:38:05,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:38:05" (2/3) ... [2018-11-18 13:38:05,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c3b07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:38:05, skipping insertion in model container [2018-11-18 13:38:05,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:38:05" (3/3) ... [2018-11-18 13:38:05,492 INFO L112 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 13:38:05,498 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:38:05,503 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 13:38:05,512 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 13:38:05,529 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:38:05,529 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:38:05,529 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:38:05,529 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:38:05,529 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:38:05,529 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:38:05,529 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:38:05,529 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:38:05,529 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:38:05,539 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-18 13:38:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 13:38:05,542 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:05,543 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:05,544 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:05,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:05,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1774380639, now seen corresponding path program 1 times [2018-11-18 13:38:05,548 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:05,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:05,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:05,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:05,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:05,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:38:05,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:38:05,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:38:05,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:38:05,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:38:05,687 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 4 states. [2018-11-18 13:38:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:05,739 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2018-11-18 13:38:05,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:38:05,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-18 13:38:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:05,745 INFO L225 Difference]: With dead ends: 44 [2018-11-18 13:38:05,746 INFO L226 Difference]: Without dead ends: 25 [2018-11-18 13:38:05,747 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:38:05,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-18 13:38:05,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-18 13:38:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 13:38:05,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-18 13:38:05,769 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2018-11-18 13:38:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:05,769 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-18 13:38:05,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:38:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-18 13:38:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 13:38:05,770 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:05,770 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:05,770 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:05,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:05,771 INFO L82 PathProgramCache]: Analyzing trace with hash 2131507610, now seen corresponding path program 1 times [2018-11-18 13:38:05,771 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:05,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:05,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:05,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:05,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 13:38:05,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:38:05,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:38:05,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:38:05,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:38:05,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:38:05,820 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2018-11-18 13:38:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:05,854 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-18 13:38:05,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:38:05,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-18 13:38:05,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:05,855 INFO L225 Difference]: With dead ends: 25 [2018-11-18 13:38:05,855 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 13:38:05,856 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:38:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 13:38:05,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-18 13:38:05,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 13:38:05,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-18 13:38:05,859 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2018-11-18 13:38:05,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:05,859 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-18 13:38:05,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:38:05,859 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-18 13:38:05,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 13:38:05,860 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:05,860 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:05,860 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:05,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:05,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1652226520, now seen corresponding path program 1 times [2018-11-18 13:38:05,860 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:05,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:05,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:05,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:05,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:05,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:05,924 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:05,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:05,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:06,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 13:38:06,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2018-11-18 13:38:06,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:38:06,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:38:06,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:38:06,024 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2018-11-18 13:38:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:06,079 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-11-18 13:38:06,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:38:06,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-11-18 13:38:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:06,080 INFO L225 Difference]: With dead ends: 24 [2018-11-18 13:38:06,080 INFO L226 Difference]: Without dead ends: 23 [2018-11-18 13:38:06,081 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:38:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-18 13:38:06,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2018-11-18 13:38:06,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 13:38:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-18 13:38:06,084 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2018-11-18 13:38:06,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:06,084 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-18 13:38:06,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:38:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-18 13:38:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 13:38:06,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:06,085 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:06,085 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:06,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:06,086 INFO L82 PathProgramCache]: Analyzing trace with hash -322124486, now seen corresponding path program 1 times [2018-11-18 13:38:06,086 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:06,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:06,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:06,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:06,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:06,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:06,115 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:06,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:06,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:06,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:06,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-18 13:38:06,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:38:06,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:38:06,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:38:06,170 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 7 states. [2018-11-18 13:38:06,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:06,198 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-11-18 13:38:06,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:38:06,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-11-18 13:38:06,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:06,199 INFO L225 Difference]: With dead ends: 35 [2018-11-18 13:38:06,200 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 13:38:06,200 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:38:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 13:38:06,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2018-11-18 13:38:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 13:38:06,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-18 13:38:06,203 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 17 [2018-11-18 13:38:06,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:06,203 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-18 13:38:06,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:38:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-18 13:38:06,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 13:38:06,204 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:06,204 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:06,205 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:06,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash -170563169, now seen corresponding path program 2 times [2018-11-18 13:38:06,205 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:06,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:06,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:06,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:06,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:06,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:06,257 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:06,267 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 13:38:06,275 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:38:06,276 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:06,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:06,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:06,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-11-18 13:38:06,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 13:38:06,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 13:38:06,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-18 13:38:06,304 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 9 states. [2018-11-18 13:38:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:06,334 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2018-11-18 13:38:06,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 13:38:06,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-11-18 13:38:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:06,334 INFO L225 Difference]: With dead ends: 40 [2018-11-18 13:38:06,335 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 13:38:06,335 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-11-18 13:38:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 13:38:06,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2018-11-18 13:38:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 13:38:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-11-18 13:38:06,338 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 22 [2018-11-18 13:38:06,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:06,338 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-11-18 13:38:06,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 13:38:06,338 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-11-18 13:38:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 13:38:06,338 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:06,339 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:06,339 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:06,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:06,339 INFO L82 PathProgramCache]: Analyzing trace with hash -655573926, now seen corresponding path program 3 times [2018-11-18 13:38:06,339 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:06,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:06,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:06,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:06,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:06,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:06,415 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:06,432 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:38:06,446 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 13:38:06,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:06,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:06,491 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:06,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-11-18 13:38:06,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 13:38:06,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 13:38:06,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-18 13:38:06,492 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2018-11-18 13:38:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:06,536 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-11-18 13:38:06,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 13:38:06,536 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2018-11-18 13:38:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:06,537 INFO L225 Difference]: With dead ends: 45 [2018-11-18 13:38:06,537 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 13:38:06,538 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:38:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 13:38:06,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-11-18 13:38:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 13:38:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-11-18 13:38:06,542 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 27 [2018-11-18 13:38:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:06,542 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-11-18 13:38:06,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 13:38:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-11-18 13:38:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 13:38:06,543 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:06,543 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:06,543 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:06,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:06,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2024990335, now seen corresponding path program 4 times [2018-11-18 13:38:06,544 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:06,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:06,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:06,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:06,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:06,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:06,628 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:06,635 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:38:06,650 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:38:06,650 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:06,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:06,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:06,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-11-18 13:38:06,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 13:38:06,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 13:38:06,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-18 13:38:06,688 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 13 states. [2018-11-18 13:38:06,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:06,767 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-11-18 13:38:06,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 13:38:06,767 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2018-11-18 13:38:06,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:06,768 INFO L225 Difference]: With dead ends: 50 [2018-11-18 13:38:06,768 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 13:38:06,769 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2018-11-18 13:38:06,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 13:38:06,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-11-18 13:38:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 13:38:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2018-11-18 13:38:06,773 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 32 [2018-11-18 13:38:06,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:06,773 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2018-11-18 13:38:06,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 13:38:06,773 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2018-11-18 13:38:06,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 13:38:06,774 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:06,774 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:06,775 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:06,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:06,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1353036934, now seen corresponding path program 5 times [2018-11-18 13:38:06,775 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:06,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:06,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:06,776 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:06,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:06,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:06,924 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:06,937 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 13:38:06,963 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-18 13:38:06,963 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:06,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:06,999 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:06,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-11-18 13:38:06,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 13:38:06,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 13:38:07,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-11-18 13:38:07,000 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 15 states. [2018-11-18 13:38:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:07,081 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2018-11-18 13:38:07,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 13:38:07,081 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2018-11-18 13:38:07,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:07,082 INFO L225 Difference]: With dead ends: 55 [2018-11-18 13:38:07,082 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 13:38:07,082 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2018-11-18 13:38:07,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 13:38:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-11-18 13:38:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 13:38:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-11-18 13:38:07,085 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 37 [2018-11-18 13:38:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:07,085 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-11-18 13:38:07,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 13:38:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-11-18 13:38:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 13:38:07,086 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:07,086 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:07,087 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:07,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:07,087 INFO L82 PathProgramCache]: Analyzing trace with hash -637416609, now seen corresponding path program 6 times [2018-11-18 13:38:07,087 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:07,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:07,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:07,088 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:07,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:07,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:07,175 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:07,185 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 13:38:07,205 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-18 13:38:07,205 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:07,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:07,273 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:07,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-11-18 13:38:07,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 13:38:07,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 13:38:07,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-11-18 13:38:07,274 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 17 states. [2018-11-18 13:38:07,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:07,350 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-11-18 13:38:07,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 13:38:07,350 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2018-11-18 13:38:07,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:07,351 INFO L225 Difference]: With dead ends: 60 [2018-11-18 13:38:07,351 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 13:38:07,351 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2018-11-18 13:38:07,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 13:38:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2018-11-18 13:38:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 13:38:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2018-11-18 13:38:07,356 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 42 [2018-11-18 13:38:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:07,356 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2018-11-18 13:38:07,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 13:38:07,356 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2018-11-18 13:38:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-18 13:38:07,357 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:07,357 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:07,362 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:07,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:07,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2113368730, now seen corresponding path program 7 times [2018-11-18 13:38:07,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:07,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:07,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:07,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:07,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:07,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:07,488 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:07,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:07,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:07,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:07,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-11-18 13:38:07,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 13:38:07,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 13:38:07,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-11-18 13:38:07,544 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 19 states. [2018-11-18 13:38:07,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:07,621 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2018-11-18 13:38:07,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 13:38:07,621 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2018-11-18 13:38:07,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:07,622 INFO L225 Difference]: With dead ends: 65 [2018-11-18 13:38:07,622 INFO L226 Difference]: Without dead ends: 58 [2018-11-18 13:38:07,622 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2018-11-18 13:38:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-18 13:38:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2018-11-18 13:38:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-18 13:38:07,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-11-18 13:38:07,625 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 47 [2018-11-18 13:38:07,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:07,626 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-11-18 13:38:07,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 13:38:07,626 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-11-18 13:38:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 13:38:07,627 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:07,627 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:07,627 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:07,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:07,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1763711039, now seen corresponding path program 8 times [2018-11-18 13:38:07,627 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:07,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:07,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:07,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:07,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:07,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:07,746 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:07,752 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 13:38:07,763 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:38:07,763 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:07,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:07,789 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:07,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:07,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-11-18 13:38:07,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-18 13:38:07,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-18 13:38:07,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-11-18 13:38:07,805 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 21 states. [2018-11-18 13:38:07,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:07,919 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2018-11-18 13:38:07,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-18 13:38:07,919 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2018-11-18 13:38:07,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:07,920 INFO L225 Difference]: With dead ends: 70 [2018-11-18 13:38:07,920 INFO L226 Difference]: Without dead ends: 63 [2018-11-18 13:38:07,920 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2018-11-18 13:38:07,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-18 13:38:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2018-11-18 13:38:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-18 13:38:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2018-11-18 13:38:07,924 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 52 [2018-11-18 13:38:07,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:07,925 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2018-11-18 13:38:07,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-18 13:38:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2018-11-18 13:38:07,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 13:38:07,926 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:07,926 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:07,926 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:07,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:07,926 INFO L82 PathProgramCache]: Analyzing trace with hash -534367814, now seen corresponding path program 9 times [2018-11-18 13:38:07,926 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:07,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:07,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:07,927 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:07,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:08,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:08,055 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:08,060 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:38:08,086 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-18 13:38:08,086 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:08,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:08,129 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:08,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-11-18 13:38:08,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-18 13:38:08,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-18 13:38:08,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-11-18 13:38:08,130 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 23 states. [2018-11-18 13:38:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:08,252 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-11-18 13:38:08,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-18 13:38:08,252 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2018-11-18 13:38:08,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:08,253 INFO L225 Difference]: With dead ends: 75 [2018-11-18 13:38:08,253 INFO L226 Difference]: Without dead ends: 68 [2018-11-18 13:38:08,254 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2018-11-18 13:38:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-18 13:38:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-11-18 13:38:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-18 13:38:08,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-11-18 13:38:08,258 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 57 [2018-11-18 13:38:08,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:08,258 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-11-18 13:38:08,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-18 13:38:08,259 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-11-18 13:38:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-18 13:38:08,259 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:08,260 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:08,260 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:08,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:08,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1475071263, now seen corresponding path program 10 times [2018-11-18 13:38:08,260 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:08,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:08,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:08,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:08,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:08,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:08,409 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:08,415 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:38:08,428 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:38:08,428 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:08,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:08,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:08,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-11-18 13:38:08,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-18 13:38:08,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-18 13:38:08,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-11-18 13:38:08,500 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 25 states. [2018-11-18 13:38:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:08,604 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-11-18 13:38:08,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-18 13:38:08,604 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 62 [2018-11-18 13:38:08,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:08,604 INFO L225 Difference]: With dead ends: 80 [2018-11-18 13:38:08,605 INFO L226 Difference]: Without dead ends: 73 [2018-11-18 13:38:08,605 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2018-11-18 13:38:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-18 13:38:08,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2018-11-18 13:38:08,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-18 13:38:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2018-11-18 13:38:08,609 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 62 [2018-11-18 13:38:08,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:08,610 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2018-11-18 13:38:08,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-18 13:38:08,610 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2018-11-18 13:38:08,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-18 13:38:08,610 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:08,611 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:08,611 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:08,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:08,611 INFO L82 PathProgramCache]: Analyzing trace with hash 516458714, now seen corresponding path program 11 times [2018-11-18 13:38:08,611 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:08,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:08,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:08,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:08,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:08,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:08,817 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:08,823 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 13:38:08,866 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-18 13:38:08,866 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:08,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:08,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:08,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-11-18 13:38:08,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-18 13:38:08,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-18 13:38:08,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-11-18 13:38:08,926 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 27 states. [2018-11-18 13:38:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:09,061 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2018-11-18 13:38:09,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-18 13:38:09,061 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 67 [2018-11-18 13:38:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:09,061 INFO L225 Difference]: With dead ends: 85 [2018-11-18 13:38:09,061 INFO L226 Difference]: Without dead ends: 78 [2018-11-18 13:38:09,062 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=417, Invalid=989, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 13:38:09,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-11-18 13:38:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2018-11-18 13:38:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-18 13:38:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-11-18 13:38:09,065 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 67 [2018-11-18 13:38:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:09,065 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-11-18 13:38:09,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-18 13:38:09,065 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-11-18 13:38:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-18 13:38:09,066 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:09,066 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:09,066 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:09,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:09,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1698502145, now seen corresponding path program 12 times [2018-11-18 13:38:09,066 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:09,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:09,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:09,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:09,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:09,282 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:09,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:09,282 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:09,290 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 13:38:09,375 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-18 13:38:09,375 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:09,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:09,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:09,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-11-18 13:38:09,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-18 13:38:09,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-18 13:38:09,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-11-18 13:38:09,470 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 29 states. [2018-11-18 13:38:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:09,726 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2018-11-18 13:38:09,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-18 13:38:09,726 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 72 [2018-11-18 13:38:09,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:09,726 INFO L225 Difference]: With dead ends: 90 [2018-11-18 13:38:09,727 INFO L226 Difference]: Without dead ends: 83 [2018-11-18 13:38:09,727 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2018-11-18 13:38:09,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-11-18 13:38:09,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2018-11-18 13:38:09,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-11-18 13:38:09,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2018-11-18 13:38:09,731 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 72 [2018-11-18 13:38:09,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:09,731 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2018-11-18 13:38:09,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-18 13:38:09,731 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2018-11-18 13:38:09,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-11-18 13:38:09,734 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:09,734 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:09,734 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:09,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:09,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1346402298, now seen corresponding path program 13 times [2018-11-18 13:38:09,735 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:09,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:09,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:09,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:09,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:09,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:09,948 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:09,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:09,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:10,018 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:10,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-11-18 13:38:10,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-18 13:38:10,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-18 13:38:10,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-11-18 13:38:10,019 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 31 states. [2018-11-18 13:38:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:10,181 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2018-11-18 13:38:10,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-18 13:38:10,182 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 77 [2018-11-18 13:38:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:10,182 INFO L225 Difference]: With dead ends: 95 [2018-11-18 13:38:10,182 INFO L226 Difference]: Without dead ends: 88 [2018-11-18 13:38:10,183 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2018-11-18 13:38:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-18 13:38:10,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2018-11-18 13:38:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-18 13:38:10,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-11-18 13:38:10,186 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 77 [2018-11-18 13:38:10,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:10,186 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-11-18 13:38:10,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-18 13:38:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-11-18 13:38:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-18 13:38:10,187 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:10,187 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:10,187 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:10,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:10,188 INFO L82 PathProgramCache]: Analyzing trace with hash -930910497, now seen corresponding path program 14 times [2018-11-18 13:38:10,188 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:10,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:10,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:10,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:10,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:10,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:10,412 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:10,419 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 13:38:10,437 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:38:10,437 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:10,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:10,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:10,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-11-18 13:38:10,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-18 13:38:10,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-18 13:38:10,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-11-18 13:38:10,491 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 33 states. [2018-11-18 13:38:10,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:10,669 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2018-11-18 13:38:10,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-18 13:38:10,669 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 82 [2018-11-18 13:38:10,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:10,670 INFO L225 Difference]: With dead ends: 100 [2018-11-18 13:38:10,670 INFO L226 Difference]: Without dead ends: 93 [2018-11-18 13:38:10,670 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=633, Invalid=1529, Unknown=0, NotChecked=0, Total=2162 [2018-11-18 13:38:10,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-18 13:38:10,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2018-11-18 13:38:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-18 13:38:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2018-11-18 13:38:10,673 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 82 [2018-11-18 13:38:10,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:10,674 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2018-11-18 13:38:10,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-18 13:38:10,674 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2018-11-18 13:38:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-18 13:38:10,674 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:10,674 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:10,675 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:10,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:10,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2020605722, now seen corresponding path program 15 times [2018-11-18 13:38:10,675 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:10,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:10,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:10,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:10,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:10,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:10,949 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:10,967 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:38:11,119 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-18 13:38:11,120 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:11,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:11,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:11,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-11-18 13:38:11,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-11-18 13:38:11,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-11-18 13:38:11,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-11-18 13:38:11,173 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 35 states. [2018-11-18 13:38:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:11,376 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2018-11-18 13:38:11,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-18 13:38:11,377 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 87 [2018-11-18 13:38:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:11,377 INFO L225 Difference]: With dead ends: 105 [2018-11-18 13:38:11,377 INFO L226 Difference]: Without dead ends: 98 [2018-11-18 13:38:11,378 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=715, Invalid=1735, Unknown=0, NotChecked=0, Total=2450 [2018-11-18 13:38:11,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-11-18 13:38:11,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2018-11-18 13:38:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-11-18 13:38:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-11-18 13:38:11,382 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 87 [2018-11-18 13:38:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:11,382 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-11-18 13:38:11,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-11-18 13:38:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-11-18 13:38:11,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-18 13:38:11,383 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:11,383 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:11,383 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:11,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:11,383 INFO L82 PathProgramCache]: Analyzing trace with hash -91530305, now seen corresponding path program 16 times [2018-11-18 13:38:11,384 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:11,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:11,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:11,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:11,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:11,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:11,706 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:11,714 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:38:11,731 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:38:11,732 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:11,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:11,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:11,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-11-18 13:38:11,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-18 13:38:11,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-18 13:38:11,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-11-18 13:38:11,778 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 37 states. [2018-11-18 13:38:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:11,990 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2018-11-18 13:38:11,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-18 13:38:11,990 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 92 [2018-11-18 13:38:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:11,991 INFO L225 Difference]: With dead ends: 110 [2018-11-18 13:38:11,991 INFO L226 Difference]: Without dead ends: 103 [2018-11-18 13:38:11,992 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2018-11-18 13:38:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-18 13:38:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2018-11-18 13:38:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-11-18 13:38:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2018-11-18 13:38:11,995 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 92 [2018-11-18 13:38:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:11,995 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2018-11-18 13:38:11,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-18 13:38:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2018-11-18 13:38:11,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-11-18 13:38:11,996 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:11,996 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:11,997 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:11,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:11,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1464263110, now seen corresponding path program 17 times [2018-11-18 13:38:11,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:11,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:11,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:11,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:11,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:12,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:12,380 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:12,388 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 13:38:12,555 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-18 13:38:12,555 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:12,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:12,625 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:12,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-11-18 13:38:12,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-18 13:38:12,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-18 13:38:12,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-11-18 13:38:12,627 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand 39 states. [2018-11-18 13:38:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:12,833 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2018-11-18 13:38:12,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-18 13:38:12,833 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 97 [2018-11-18 13:38:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:12,834 INFO L225 Difference]: With dead ends: 115 [2018-11-18 13:38:12,834 INFO L226 Difference]: Without dead ends: 108 [2018-11-18 13:38:12,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=894, Invalid=2186, Unknown=0, NotChecked=0, Total=3080 [2018-11-18 13:38:12,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-11-18 13:38:12,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2018-11-18 13:38:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-11-18 13:38:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-11-18 13:38:12,838 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 97 [2018-11-18 13:38:12,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:12,838 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-11-18 13:38:12,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-18 13:38:12,838 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-11-18 13:38:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-18 13:38:12,839 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:12,839 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:12,839 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:12,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:12,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1397182305, now seen corresponding path program 18 times [2018-11-18 13:38:12,840 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:12,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:12,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:12,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:12,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:13,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:13,152 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:13,158 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 13:38:13,534 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-18 13:38:13,534 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:13,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:13,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:13,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2018-11-18 13:38:13,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-11-18 13:38:13,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-11-18 13:38:13,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2018-11-18 13:38:13,577 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 41 states. [2018-11-18 13:38:13,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:13,809 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2018-11-18 13:38:13,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-18 13:38:13,809 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 102 [2018-11-18 13:38:13,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:13,810 INFO L225 Difference]: With dead ends: 120 [2018-11-18 13:38:13,810 INFO L226 Difference]: Without dead ends: 113 [2018-11-18 13:38:13,811 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=991, Invalid=2431, Unknown=0, NotChecked=0, Total=3422 [2018-11-18 13:38:13,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-11-18 13:38:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2018-11-18 13:38:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-11-18 13:38:13,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2018-11-18 13:38:13,814 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 102 [2018-11-18 13:38:13,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:13,815 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2018-11-18 13:38:13,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-11-18 13:38:13,815 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2018-11-18 13:38:13,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-18 13:38:13,816 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:13,816 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:13,816 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:13,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:13,816 INFO L82 PathProgramCache]: Analyzing trace with hash 536728922, now seen corresponding path program 19 times [2018-11-18 13:38:13,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:13,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:13,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:13,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:13,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:14,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:14,204 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:14,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:14,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:14,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:14,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2018-11-18 13:38:14,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-11-18 13:38:14,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-11-18 13:38:14,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-11-18 13:38:14,272 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 43 states. [2018-11-18 13:38:14,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:14,492 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2018-11-18 13:38:14,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-18 13:38:14,493 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 107 [2018-11-18 13:38:14,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:14,494 INFO L225 Difference]: With dead ends: 125 [2018-11-18 13:38:14,494 INFO L226 Difference]: Without dead ends: 118 [2018-11-18 13:38:14,495 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1093, Invalid=2689, Unknown=0, NotChecked=0, Total=3782 [2018-11-18 13:38:14,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-11-18 13:38:14,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2018-11-18 13:38:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-11-18 13:38:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-11-18 13:38:14,497 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 107 [2018-11-18 13:38:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:14,498 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-11-18 13:38:14,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-11-18 13:38:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-11-18 13:38:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-18 13:38:14,498 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:14,498 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:14,499 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:14,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:14,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1654035073, now seen corresponding path program 20 times [2018-11-18 13:38:14,499 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:14,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:14,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:14,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:38:14,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:14,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:14,862 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:14,868 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 13:38:14,886 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:38:14,886 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:14,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:14,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:14,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2018-11-18 13:38:14,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-11-18 13:38:14,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-11-18 13:38:14,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-11-18 13:38:14,932 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 45 states. [2018-11-18 13:38:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:15,180 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions. [2018-11-18 13:38:15,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-18 13:38:15,181 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 112 [2018-11-18 13:38:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:15,181 INFO L225 Difference]: With dead ends: 130 [2018-11-18 13:38:15,181 INFO L226 Difference]: Without dead ends: 123 [2018-11-18 13:38:15,182 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1200, Invalid=2960, Unknown=0, NotChecked=0, Total=4160 [2018-11-18 13:38:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-11-18 13:38:15,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2018-11-18 13:38:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-11-18 13:38:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2018-11-18 13:38:15,185 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 112 [2018-11-18 13:38:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:15,185 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2018-11-18 13:38:15,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-11-18 13:38:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2018-11-18 13:38:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-18 13:38:15,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:15,185 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:15,185 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:15,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:15,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1788879994, now seen corresponding path program 21 times [2018-11-18 13:38:15,186 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:15,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:15,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:15,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:15,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:15,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:15,578 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:15,584 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:38:15,985 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-11-18 13:38:15,985 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:15,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:16,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:16,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2018-11-18 13:38:16,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-11-18 13:38:16,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-11-18 13:38:16,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2018-11-18 13:38:16,036 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand 47 states. [2018-11-18 13:38:16,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:16,315 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2018-11-18 13:38:16,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-18 13:38:16,316 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 117 [2018-11-18 13:38:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:16,316 INFO L225 Difference]: With dead ends: 135 [2018-11-18 13:38:16,316 INFO L226 Difference]: Without dead ends: 128 [2018-11-18 13:38:16,317 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1312, Invalid=3244, Unknown=0, NotChecked=0, Total=4556 [2018-11-18 13:38:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-11-18 13:38:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2018-11-18 13:38:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-11-18 13:38:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-11-18 13:38:16,320 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 117 [2018-11-18 13:38:16,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:16,321 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-11-18 13:38:16,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-11-18 13:38:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-11-18 13:38:16,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-18 13:38:16,321 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:16,321 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:16,322 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:16,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:16,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1384410529, now seen corresponding path program 22 times [2018-11-18 13:38:16,322 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:16,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:16,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:16,323 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:16,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:16,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:16,787 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:16,793 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:38:16,834 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 13:38:16,834 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:16,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:16,895 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:16,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2018-11-18 13:38:16,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-11-18 13:38:16,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-11-18 13:38:16,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-11-18 13:38:16,897 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 49 states. [2018-11-18 13:38:17,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:17,192 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2018-11-18 13:38:17,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-18 13:38:17,192 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 122 [2018-11-18 13:38:17,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:17,192 INFO L225 Difference]: With dead ends: 140 [2018-11-18 13:38:17,192 INFO L226 Difference]: Without dead ends: 133 [2018-11-18 13:38:17,193 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1429, Invalid=3541, Unknown=0, NotChecked=0, Total=4970 [2018-11-18 13:38:17,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-11-18 13:38:17,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2018-11-18 13:38:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-11-18 13:38:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2018-11-18 13:38:17,196 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 122 [2018-11-18 13:38:17,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:17,196 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2018-11-18 13:38:17,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-11-18 13:38:17,196 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2018-11-18 13:38:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-18 13:38:17,197 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:17,197 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:17,197 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:17,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:17,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2105406566, now seen corresponding path program 23 times [2018-11-18 13:38:17,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:17,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:17,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:17,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:17,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:17,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:17,646 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:17,652 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 13:38:17,913 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-11-18 13:38:17,913 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:17,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:17,966 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:17,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2018-11-18 13:38:17,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-11-18 13:38:17,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-11-18 13:38:17,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2018-11-18 13:38:17,968 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 51 states. [2018-11-18 13:38:18,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:18,270 INFO L93 Difference]: Finished difference Result 145 states and 147 transitions. [2018-11-18 13:38:18,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-18 13:38:18,270 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 127 [2018-11-18 13:38:18,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:18,270 INFO L225 Difference]: With dead ends: 145 [2018-11-18 13:38:18,270 INFO L226 Difference]: Without dead ends: 138 [2018-11-18 13:38:18,271 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1551, Invalid=3851, Unknown=0, NotChecked=0, Total=5402 [2018-11-18 13:38:18,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-11-18 13:38:18,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2018-11-18 13:38:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-11-18 13:38:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-11-18 13:38:18,275 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 127 [2018-11-18 13:38:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:18,275 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-11-18 13:38:18,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-11-18 13:38:18,275 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-11-18 13:38:18,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-18 13:38:18,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:18,275 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:18,276 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:18,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:18,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1068687553, now seen corresponding path program 24 times [2018-11-18 13:38:18,276 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:18,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:18,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:18,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:18,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:18,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:38:18,791 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:38:18,799 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 13:38:20,192 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2018-11-18 13:38:20,193 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:38:20,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:38:20,316 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-11-18 13:38:20,318 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 13:38:20,318 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,320 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,325 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,326 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-11-18 13:38:20,399 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:20,402 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:38:20,406 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 13:38:20,407 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,413 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,417 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,417 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-18 13:38:20,473 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:20,476 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:38:20,477 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 13:38:20,478 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,482 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,500 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,500 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-18 13:38:20,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:20,560 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:38:20,561 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 13:38:20,561 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,565 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,570 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,570 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-18 13:38:20,630 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:20,632 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:38:20,633 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 13:38:20,634 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,637 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,642 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,642 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-18 13:38:20,705 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:20,709 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:38:20,710 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 13:38:20,711 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,715 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,719 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,719 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-18 13:38:20,775 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:20,777 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:38:20,778 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 13:38:20,778 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,781 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,785 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,785 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-18 13:38:20,848 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:20,850 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:38:20,851 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 13:38:20,852 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,855 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,860 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,860 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-18 13:38:20,919 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:20,922 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:38:20,924 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 13:38:20,924 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,929 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,934 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:20,934 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-18 13:38:20,996 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:20,998 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:38:20,999 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 13:38:20,999 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,002 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,006 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,006 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-18 13:38:21,067 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:21,069 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:38:21,070 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 13:38:21,070 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,074 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,077 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,078 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-11-18 13:38:21,142 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:21,143 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:38:21,145 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 13:38:21,145 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,149 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,153 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,153 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:31, output treesize:13 [2018-11-18 13:38:21,181 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-11-18 13:38:21,195 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 13:38:21,196 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,203 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,210 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,210 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:27 [2018-11-18 13:38:21,315 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-18 13:38:21,317 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 13:38:21,317 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,324 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,336 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-18 13:38:21,344 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 13:38:21,345 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,353 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,366 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 13:38:21,366 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-18 13:38:21,469 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-18 13:38:21,477 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 13:38:21,477 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,486 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-18 13:38:21,510 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 13:38:21,510 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,516 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,529 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 13:38:21,530 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-18 13:38:21,638 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-18 13:38:21,640 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 13:38:21,640 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,643 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,656 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-18 13:38:21,666 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 13:38:21,667 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,676 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,690 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 13:38:21,690 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-18 13:38:21,792 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-18 13:38:21,794 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 13:38:21,794 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,798 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:21,818 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-18 13:38:21,825 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 13:38:21,826 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,834 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,847 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 13:38:21,847 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-18 13:38:21,956 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-18 13:38:21,966 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 13:38:21,967 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,975 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:38:21,993 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-18 13:38:21,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 13:38:21,999 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:22,003 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:22,016 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 13:38:22,016 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-18 13:38:22,143 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-18 13:38:22,146 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 13:38:22,146 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:22,150 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:22,161 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-18 13:38:22,169 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 13:38:22,169 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-18 13:38:22,178 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:38:22,191 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 13:38:22,191 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-18 13:38:22,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-18 13:38:22,295 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 13:38:22,295 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:22,300 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:22,318 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-18 13:38:22,326 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 13:38:22,327 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-18 13:38:22,337 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:38:22,350 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 13:38:22,351 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-18 13:38:22,447 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-11-18 13:38:22,454 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 13:38:22,454 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-18 13:38:22,461 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:38:22,475 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-11-18 13:38:22,476 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 13:38:22,476 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:22,479 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:22,497 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 13:38:22,497 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-11-18 13:38:22,606 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-18 13:38:22,608 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2018-11-18 13:38:22,608 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:38:22,609 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:22,609 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:38:22,610 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-11-18 13:38:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 265 proven. 1163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:38:22,688 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:38:22,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 52] total 102 [2018-11-18 13:38:22,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-11-18 13:38:22,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-11-18 13:38:22,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1697, Invalid=8605, Unknown=0, NotChecked=0, Total=10302 [2018-11-18 13:38:22,689 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 102 states. [2018-11-18 13:38:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:24,377 INFO L93 Difference]: Finished difference Result 149 states and 152 transitions. [2018-11-18 13:38:24,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-11-18 13:38:24,377 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 132 [2018-11-18 13:38:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:24,378 INFO L225 Difference]: With dead ends: 149 [2018-11-18 13:38:24,378 INFO L226 Difference]: Without dead ends: 142 [2018-11-18 13:38:24,379 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 74 SyntacticMatches, 8 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7295 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4381, Invalid=17969, Unknown=0, NotChecked=0, Total=22350 [2018-11-18 13:38:24,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-11-18 13:38:24,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2018-11-18 13:38:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-11-18 13:38:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-11-18 13:38:24,382 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 132 [2018-11-18 13:38:24,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:24,382 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-11-18 13:38:24,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-11-18 13:38:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-11-18 13:38:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-18 13:38:24,383 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:38:24,383 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:38:24,383 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 13:38:24,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:38:24,384 INFO L82 PathProgramCache]: Analyzing trace with hash -240399159, now seen corresponding path program 1 times [2018-11-18 13:38:24,384 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:38:24,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:38:24,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:24,385 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:38:24,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:38:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:38:24,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-11-18 13:38:24,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:38:24,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:38:24,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:38:24,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:38:24,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:38:24,426 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 4 states. [2018-11-18 13:38:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:38:24,433 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2018-11-18 13:38:24,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:38:24,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-11-18 13:38:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:38:24,435 INFO L225 Difference]: With dead ends: 139 [2018-11-18 13:38:24,435 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 13:38:24,435 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:38:24,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 13:38:24,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 13:38:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 13:38:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 13:38:24,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2018-11-18 13:38:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:38:24,436 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:38:24,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:38:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 13:38:24,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 13:38:24,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 13:38:24,537 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:38:24,537 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:38:24,537 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:38:24,537 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:38:24,537 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 13:38:24,538 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 21) no Hoare annotation was computed. [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 19) no Hoare annotation was computed. [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point L17-3(lines 10 21) no Hoare annotation was computed. [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 19) no Hoare annotation was computed. [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 21) no Hoare annotation was computed. [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-11-18 13:38:24,538 INFO L425 ceAbstractionStarter]: For program point L13-4(line 13) no Hoare annotation was computed. [2018-11-18 13:38:24,539 INFO L425 ceAbstractionStarter]: For program point L13-5(line 13) no Hoare annotation was computed. [2018-11-18 13:38:24,539 INFO L421 ceAbstractionStarter]: At program point L13-6(lines 13 15) the Hoare annotation is: (let ((.cse0 (= |main_~#a~0.offset| 0))) (or (and (<= 4 main_~i~0) (<= (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| 12)) 2147483647) .cse0) (and (= main_~i~0 0) .cse0) (and (<= main_~i~0 3) (<= 1 main_~i~0) .cse0))) [2018-11-18 13:38:24,539 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 21) the Hoare annotation is: true [2018-11-18 13:38:24,539 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-18 13:38:24,539 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-18 13:38:24,539 INFO L425 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-11-18 13:38:24,539 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-11-18 13:38:24,545 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 13:38:24,549 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 13:38:24,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:38:24 BoogieIcfgContainer [2018-11-18 13:38:24,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:38:24,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:38:24,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:38:24,551 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:38:24,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:38:05" (3/4) ... [2018-11-18 13:38:24,554 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 13:38:24,558 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 13:38:24,559 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 13:38:24,561 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-18 13:38:24,561 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-18 13:38:24,561 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 13:38:24,593 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_538afd57-9da2-4c31-a46e-a18f93e04c8b/bin-2019/uautomizer/witness.graphml [2018-11-18 13:38:24,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:38:24,594 INFO L168 Benchmark]: Toolchain (without parser) took 19478.88 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 480.8 MB). Free memory was 959.1 MB in the beginning and 1.4 GB in the end (delta: -408.9 MB). Peak memory consumption was 71.9 MB. Max. memory is 11.5 GB. [2018-11-18 13:38:24,595 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:38:24,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.67 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:38:24,595 INFO L168 Benchmark]: Boogie Preprocessor took 22.25 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:38:24,596 INFO L168 Benchmark]: RCFGBuilder took 183.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:38:24,596 INFO L168 Benchmark]: TraceAbstraction took 19062.10 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 324.5 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -238.1 MB). Peak memory consumption was 86.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:38:24,596 INFO L168 Benchmark]: Witness Printer took 42.71 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:38:24,601 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 165.67 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.25 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 183.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 19062.10 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 324.5 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -238.1 MB). Peak memory consumption was 86.4 MB. Max. memory is 11.5 GB. * Witness Printer took 42.71 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2018-11-18 13:38:24,604 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 13:38:24,604 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((4 <= i && unknown-#memory_int-unknown[a][a + 12] <= 2147483647) && a == 0) || (i == 0 && a == 0)) || ((i <= 3 && 1 <= i) && a == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 4 error locations. SAFE Result, 19.0s OverallTime, 28 OverallIterations, 26 TraceHistogramMax, 5.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 433 SDtfs, 1800 SDslu, 6726 SDs, 0 SdLazy, 4665 SolverSat, 237 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2794 GetRequests, 1725 SyntacticMatches, 8 SemanticMatches, 1061 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15374 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=27, 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, 28 MinimizatonAttempts, 75 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 30 NumberOfFragments, 38 HoareAnnotationTreeSize, 5 FomulaSimplifications, 242 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 258 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 3771 NumberOfCodeBlocks, 3766 NumberOfCodeBlocksAsserted, 224 NumberOfCheckSat, 3718 ConstructedInterpolants, 0 QuantifiedInterpolants, 1129523 SizeOfPredicates, 329 NumberOfNonLiveVariables, 4425 ConjunctsInSsa, 690 ConjunctsInUnsatCore, 53 InterpolantComputations, 4 PerfectInterpolantSequences, 1824/25764 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...