./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/recHanoi02_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/recHanoi02_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/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 5562cc301d5faa8ad8777fb25a4973bec89fa1c5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 13:44:03,144 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 13:44:03,145 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 13:44:03,152 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 13:44:03,152 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 13:44:03,152 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 13:44:03,153 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 13:44:03,154 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 13:44:03,156 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 13:44:03,156 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 13:44:03,157 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 13:44:03,157 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 13:44:03,158 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 13:44:03,159 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 13:44:03,159 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 13:44:03,160 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 13:44:03,161 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 13:44:03,162 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 13:44:03,163 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 13:44:03,165 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 13:44:03,165 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 13:44:03,166 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 13:44:03,168 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 13:44:03,168 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 13:44:03,168 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 13:44:03,169 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 13:44:03,169 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 13:44:03,170 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 13:44:03,171 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 13:44:03,171 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 13:44:03,171 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 13:44:03,172 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 13:44:03,172 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 13:44:03,172 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 13:44:03,173 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 13:44:03,173 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 13:44:03,174 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-12-01 13:44:03,183 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 13:44:03,183 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 13:44:03,184 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 13:44:03,184 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 13:44:03,185 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 13:44:03,185 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 13:44:03,185 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 13:44:03,185 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 13:44:03,185 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 13:44:03,185 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 13:44:03,186 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 13:44:03,186 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 13:44:03,186 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 13:44:03,186 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 13:44:03,186 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-01 13:44:03,186 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 13:44:03,186 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 13:44:03,187 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 13:44:03,187 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 13:44:03,187 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 13:44:03,187 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 13:44:03,187 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 13:44:03,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 13:44:03,188 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 13:44:03,188 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 13:44:03,188 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 13:44:03,188 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 13:44:03,188 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 13:44:03,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 13:44:03,188 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_cc35148f-c82a-48d0-8609-4695acac7102/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 -> 5562cc301d5faa8ad8777fb25a4973bec89fa1c5 [2018-12-01 13:44:03,212 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 13:44:03,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 13:44:03,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 13:44:03,223 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 13:44:03,223 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 13:44:03,224 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/recHanoi02_true-termination_true-no-overflow.c [2018-12-01 13:44:03,259 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/data/b50a98d99/d49a8d5725a84e739c240863cc986722/FLAG7f38c67fe [2018-12-01 13:44:03,604 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 13:44:03,604 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/sv-benchmarks/c/termination-numeric/recHanoi02_true-termination_true-no-overflow.c [2018-12-01 13:44:03,608 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/data/b50a98d99/d49a8d5725a84e739c240863cc986722/FLAG7f38c67fe [2018-12-01 13:44:03,998 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/data/b50a98d99/d49a8d5725a84e739c240863cc986722 [2018-12-01 13:44:04,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 13:44:04,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 13:44:04,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 13:44:04,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 13:44:04,004 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 13:44:04,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:44:03" (1/1) ... [2018-12-01 13:44:04,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d10e54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04, skipping insertion in model container [2018-12-01 13:44:04,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:44:03" (1/1) ... [2018-12-01 13:44:04,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 13:44:04,025 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 13:44:04,108 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 13:44:04,111 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 13:44:04,121 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 13:44:04,130 INFO L195 MainTranslator]: Completed translation [2018-12-01 13:44:04,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04 WrapperNode [2018-12-01 13:44:04,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 13:44:04,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 13:44:04,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 13:44:04,131 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 13:44:04,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04" (1/1) ... [2018-12-01 13:44:04,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04" (1/1) ... [2018-12-01 13:44:04,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 13:44:04,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 13:44:04,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 13:44:04,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 13:44:04,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04" (1/1) ... [2018-12-01 13:44:04,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04" (1/1) ... [2018-12-01 13:44:04,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04" (1/1) ... [2018-12-01 13:44:04,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04" (1/1) ... [2018-12-01 13:44:04,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04" (1/1) ... [2018-12-01 13:44:04,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04" (1/1) ... [2018-12-01 13:44:04,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04" (1/1) ... [2018-12-01 13:44:04,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 13:44:04,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 13:44:04,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 13:44:04,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 13:44:04,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 13:44:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 13:44:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 13:44:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2018-12-01 13:44:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2018-12-01 13:44:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 13:44:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 13:44:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 13:44:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 13:44:04,306 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 13:44:04,306 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-01 13:44:04,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:44:04 BoogieIcfgContainer [2018-12-01 13:44:04,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 13:44:04,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 13:44:04,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 13:44:04,309 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 13:44:04,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:44:03" (1/3) ... [2018-12-01 13:44:04,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32989f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:44:04, skipping insertion in model container [2018-12-01 13:44:04,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:44:04" (2/3) ... [2018-12-01 13:44:04,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32989f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:44:04, skipping insertion in model container [2018-12-01 13:44:04,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:44:04" (3/3) ... [2018-12-01 13:44:04,311 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi02_true-termination_true-no-overflow.c [2018-12-01 13:44:04,317 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 13:44:04,321 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-01 13:44:04,331 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-01 13:44:04,349 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 13:44:04,349 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 13:44:04,349 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 13:44:04,350 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 13:44:04,350 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 13:44:04,350 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 13:44:04,350 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 13:44:04,350 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 13:44:04,350 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 13:44:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-01 13:44:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 13:44:04,364 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:04,364 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:04,366 INFO L423 AbstractCegarLoop]: === Iteration 1 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:04,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:04,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1002909108, now seen corresponding path program 1 times [2018-12-01 13:44:04,370 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:04,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:04,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:04,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:04,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:44:04,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 13:44:04,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 13:44:04,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 13:44:04,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 13:44:04,482 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-12-01 13:44:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:04,527 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-12-01 13:44:04,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 13:44:04,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-01 13:44:04,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:04,533 INFO L225 Difference]: With dead ends: 38 [2018-12-01 13:44:04,533 INFO L226 Difference]: Without dead ends: 24 [2018-12-01 13:44:04,535 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 13:44:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-01 13:44:04,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-01 13:44:04,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-01 13:44:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-12-01 13:44:04,559 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 10 [2018-12-01 13:44:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:04,560 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-12-01 13:44:04,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 13:44:04,560 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-12-01 13:44:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 13:44:04,560 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:04,560 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:04,560 INFO L423 AbstractCegarLoop]: === Iteration 2 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:04,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:04,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1025411315, now seen corresponding path program 1 times [2018-12-01 13:44:04,561 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:04,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:04,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:04,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:04,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:44:04,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 13:44:04,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 13:44:04,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 13:44:04,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 13:44:04,597 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-12-01 13:44:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:04,634 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-12-01 13:44:04,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 13:44:04,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-01 13:44:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:04,637 INFO L225 Difference]: With dead ends: 43 [2018-12-01 13:44:04,637 INFO L226 Difference]: Without dead ends: 40 [2018-12-01 13:44:04,638 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 13:44:04,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-01 13:44:04,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2018-12-01 13:44:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-01 13:44:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-12-01 13:44:04,646 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2018-12-01 13:44:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:04,646 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-12-01 13:44:04,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 13:44:04,647 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-12-01 13:44:04,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 13:44:04,648 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:04,648 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:04,648 INFO L423 AbstractCegarLoop]: === Iteration 3 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:04,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:04,649 INFO L82 PathProgramCache]: Analyzing trace with hash -80939849, now seen corresponding path program 1 times [2018-12-01 13:44:04,649 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:04,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:04,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:04,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:04,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:04,687 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:04,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:04,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:04,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:04,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-01 13:44:04,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 13:44:04,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 13:44:04,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-01 13:44:04,737 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2018-12-01 13:44:04,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:04,789 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2018-12-01 13:44:04,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 13:44:04,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-12-01 13:44:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:04,790 INFO L225 Difference]: With dead ends: 59 [2018-12-01 13:44:04,790 INFO L226 Difference]: Without dead ends: 58 [2018-12-01 13:44:04,790 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-12-01 13:44:04,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-12-01 13:44:04,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2018-12-01 13:44:04,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-01 13:44:04,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2018-12-01 13:44:04,795 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 16 [2018-12-01 13:44:04,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:04,795 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2018-12-01 13:44:04,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 13:44:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2018-12-01 13:44:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 13:44:04,796 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:04,796 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:04,796 INFO L423 AbstractCegarLoop]: === Iteration 4 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:04,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash -474289655, now seen corresponding path program 1 times [2018-12-01 13:44:04,797 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:04,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:04,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:04,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 13:44:04,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:44:04,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 13:44:04,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 13:44:04,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 13:44:04,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 13:44:04,817 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 4 states. [2018-12-01 13:44:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:04,835 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2018-12-01 13:44:04,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 13:44:04,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-12-01 13:44:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:04,837 INFO L225 Difference]: With dead ends: 67 [2018-12-01 13:44:04,837 INFO L226 Difference]: Without dead ends: 65 [2018-12-01 13:44:04,837 INFO L631 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 [2018-12-01 13:44:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-01 13:44:04,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2018-12-01 13:44:04,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-12-01 13:44:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2018-12-01 13:44:04,846 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 18 [2018-12-01 13:44:04,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:04,846 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2018-12-01 13:44:04,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 13:44:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2018-12-01 13:44:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 13:44:04,847 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:04,847 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:04,848 INFO L423 AbstractCegarLoop]: === Iteration 5 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:04,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:04,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1818077372, now seen corresponding path program 1 times [2018-12-01 13:44:04,848 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:04,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:04,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:04,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 13:44:04,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:44:04,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 13:44:04,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 13:44:04,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 13:44:04,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 13:44:04,881 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 4 states. [2018-12-01 13:44:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:04,892 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-12-01 13:44:04,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 13:44:04,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-12-01 13:44:04,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:04,893 INFO L225 Difference]: With dead ends: 62 [2018-12-01 13:44:04,893 INFO L226 Difference]: Without dead ends: 53 [2018-12-01 13:44:04,893 INFO L631 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 [2018-12-01 13:44:04,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-01 13:44:04,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-12-01 13:44:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-12-01 13:44:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-12-01 13:44:04,897 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 19 [2018-12-01 13:44:04,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:04,897 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-12-01 13:44:04,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 13:44:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-12-01 13:44:04,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-01 13:44:04,897 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:04,897 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:04,898 INFO L423 AbstractCegarLoop]: === Iteration 6 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:04,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:04,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1159773325, now seen corresponding path program 2 times [2018-12-01 13:44:04,898 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:04,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:04,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:04,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:04,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:04,932 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:04,938 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 13:44:04,943 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 13:44:04,943 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:04,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:04,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:04,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-12-01 13:44:04,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-01 13:44:04,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-01 13:44:04,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-01 13:44:04,963 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 9 states. [2018-12-01 13:44:05,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:05,022 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2018-12-01 13:44:05,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 13:44:05,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-12-01 13:44:05,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:05,023 INFO L225 Difference]: With dead ends: 78 [2018-12-01 13:44:05,023 INFO L226 Difference]: Without dead ends: 77 [2018-12-01 13:44:05,024 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-12-01 13:44:05,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-12-01 13:44:05,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2018-12-01 13:44:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-12-01 13:44:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2018-12-01 13:44:05,028 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 21 [2018-12-01 13:44:05,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:05,029 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2018-12-01 13:44:05,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-01 13:44:05,029 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2018-12-01 13:44:05,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-01 13:44:05,029 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:05,030 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:05,030 INFO L423 AbstractCegarLoop]: === Iteration 7 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:05,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:05,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1430047287, now seen corresponding path program 3 times [2018-12-01 13:44:05,030 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:05,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:05,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:05,031 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:05,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:05,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:05,108 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:05,116 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 13:44:05,123 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-01 13:44:05,123 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:05,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:05,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:05,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-12-01 13:44:05,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-01 13:44:05,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-01 13:44:05,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-12-01 13:44:05,145 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 11 states. [2018-12-01 13:44:05,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:05,243 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2018-12-01 13:44:05,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-01 13:44:05,243 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-12-01 13:44:05,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:05,244 INFO L225 Difference]: With dead ends: 98 [2018-12-01 13:44:05,244 INFO L226 Difference]: Without dead ends: 97 [2018-12-01 13:44:05,245 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2018-12-01 13:44:05,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-12-01 13:44:05,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2018-12-01 13:44:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-12-01 13:44:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2018-12-01 13:44:05,252 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 26 [2018-12-01 13:44:05,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:05,252 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2018-12-01 13:44:05,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-01 13:44:05,252 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2018-12-01 13:44:05,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-01 13:44:05,253 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:05,253 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:05,254 INFO L423 AbstractCegarLoop]: === Iteration 8 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:05,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:05,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1529291277, now seen corresponding path program 4 times [2018-12-01 13:44:05,254 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:05,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:05,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:05,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:05,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:05,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:05,345 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:05,351 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 13:44:05,358 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 13:44:05,358 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:05,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:05,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:05,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-12-01 13:44:05,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-01 13:44:05,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-01 13:44:05,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-12-01 13:44:05,381 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 13 states. [2018-12-01 13:44:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:05,500 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2018-12-01 13:44:05,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-01 13:44:05,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2018-12-01 13:44:05,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:05,501 INFO L225 Difference]: With dead ends: 118 [2018-12-01 13:44:05,501 INFO L226 Difference]: Without dead ends: 117 [2018-12-01 13:44:05,502 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2018-12-01 13:44:05,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-12-01 13:44:05,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2018-12-01 13:44:05,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-12-01 13:44:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2018-12-01 13:44:05,510 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 31 [2018-12-01 13:44:05,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:05,510 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2018-12-01 13:44:05,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-01 13:44:05,510 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2018-12-01 13:44:05,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 13:44:05,511 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:05,511 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:05,512 INFO L423 AbstractCegarLoop]: === Iteration 9 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:05,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:05,512 INFO L82 PathProgramCache]: Analyzing trace with hash -10526561, now seen corresponding path program 1 times [2018-12-01 13:44:05,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:05,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:05,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:05,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:05,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-01 13:44:05,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:05,543 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:05,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:05,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-01 13:44:05,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:05,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-01 13:44:05,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 13:44:05,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 13:44:05,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 13:44:05,596 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 6 states. [2018-12-01 13:44:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:05,614 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2018-12-01 13:44:05,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 13:44:05,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-12-01 13:44:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:05,615 INFO L225 Difference]: With dead ends: 153 [2018-12-01 13:44:05,615 INFO L226 Difference]: Without dead ends: 138 [2018-12-01 13:44:05,615 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 13:44:05,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-12-01 13:44:05,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-12-01 13:44:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-12-01 13:44:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2018-12-01 13:44:05,619 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 30 [2018-12-01 13:44:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:05,620 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2018-12-01 13:44:05,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 13:44:05,620 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2018-12-01 13:44:05,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-01 13:44:05,620 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:05,620 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:05,620 INFO L423 AbstractCegarLoop]: === Iteration 10 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:05,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:05,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1671413687, now seen corresponding path program 5 times [2018-12-01 13:44:05,621 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:05,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:05,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:05,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:05,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:05,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:05,706 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:05,712 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 13:44:05,722 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-01 13:44:05,722 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:05,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:05,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:05,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-12-01 13:44:05,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-01 13:44:05,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-01 13:44:05,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-12-01 13:44:05,748 INFO L87 Difference]: Start difference. First operand 133 states and 148 transitions. Second operand 15 states. [2018-12-01 13:44:05,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:05,890 INFO L93 Difference]: Finished difference Result 171 states and 177 transitions. [2018-12-01 13:44:05,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-01 13:44:05,890 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2018-12-01 13:44:05,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:05,892 INFO L225 Difference]: With dead ends: 171 [2018-12-01 13:44:05,892 INFO L226 Difference]: Without dead ends: 170 [2018-12-01 13:44:05,892 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2018-12-01 13:44:05,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-12-01 13:44:05,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 158. [2018-12-01 13:44:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-12-01 13:44:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2018-12-01 13:44:05,900 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 36 [2018-12-01 13:44:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:05,900 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2018-12-01 13:44:05,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-01 13:44:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2018-12-01 13:44:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-12-01 13:44:05,902 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:05,902 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:05,902 INFO L423 AbstractCegarLoop]: === Iteration 11 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:05,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:05,903 INFO L82 PathProgramCache]: Analyzing trace with hash 829642867, now seen corresponding path program 6 times [2018-12-01 13:44:05,903 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:05,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:05,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:05,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:05,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:44:06,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:06,032 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:06,039 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 13:44:06,049 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-12-01 13:44:06,049 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:06,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-01 13:44:06,104 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:06,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 17 [2018-12-01 13:44:06,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-01 13:44:06,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-01 13:44:06,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-12-01 13:44:06,105 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand 18 states. [2018-12-01 13:44:06,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:06,125 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2018-12-01 13:44:06,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 13:44:06,125 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2018-12-01 13:44:06,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:06,126 INFO L225 Difference]: With dead ends: 158 [2018-12-01 13:44:06,126 INFO L226 Difference]: Without dead ends: 157 [2018-12-01 13:44:06,126 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2018-12-01 13:44:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-12-01 13:44:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-12-01 13:44:06,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-12-01 13:44:06,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 175 transitions. [2018-12-01 13:44:06,130 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 175 transitions. Word has length 41 [2018-12-01 13:44:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:06,130 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 175 transitions. [2018-12-01 13:44:06,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-01 13:44:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 175 transitions. [2018-12-01 13:44:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-01 13:44:06,131 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:06,131 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:06,131 INFO L423 AbstractCegarLoop]: === Iteration 12 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:06,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:06,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1233481545, now seen corresponding path program 2 times [2018-12-01 13:44:06,131 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:06,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:06,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:06,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:06,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:06,160 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-01 13:44:06,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:06,161 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:06,167 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 13:44:06,174 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 13:44:06,174 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:06,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-01 13:44:06,205 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:06,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-01 13:44:06,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 13:44:06,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 13:44:06,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-01 13:44:06,205 INFO L87 Difference]: Start difference. First operand 157 states and 175 transitions. Second operand 8 states. [2018-12-01 13:44:06,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:06,230 INFO L93 Difference]: Finished difference Result 211 states and 241 transitions. [2018-12-01 13:44:06,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 13:44:06,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2018-12-01 13:44:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:06,231 INFO L225 Difference]: With dead ends: 211 [2018-12-01 13:44:06,232 INFO L226 Difference]: Without dead ends: 189 [2018-12-01 13:44:06,232 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-01 13:44:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-12-01 13:44:06,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2018-12-01 13:44:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-12-01 13:44:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 201 transitions. [2018-12-01 13:44:06,239 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 201 transitions. Word has length 42 [2018-12-01 13:44:06,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:06,240 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 201 transitions. [2018-12-01 13:44:06,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 13:44:06,240 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 201 transitions. [2018-12-01 13:44:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-12-01 13:44:06,241 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:06,241 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:06,241 INFO L423 AbstractCegarLoop]: === Iteration 13 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:06,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:06,242 INFO L82 PathProgramCache]: Analyzing trace with hash -677419169, now seen corresponding path program 3 times [2018-12-01 13:44:06,242 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:06,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:06,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:06,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:06,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-12-01 13:44:06,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:06,293 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:06,299 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 13:44:06,307 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-01 13:44:06,307 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:06,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-12-01 13:44:06,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:06,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-12-01 13:44:06,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-01 13:44:06,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-01 13:44:06,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-01 13:44:06,353 INFO L87 Difference]: Start difference. First operand 183 states and 201 transitions. Second operand 10 states. [2018-12-01 13:44:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:06,399 INFO L93 Difference]: Finished difference Result 237 states and 267 transitions. [2018-12-01 13:44:06,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-01 13:44:06,399 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-12-01 13:44:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:06,400 INFO L225 Difference]: With dead ends: 237 [2018-12-01 13:44:06,400 INFO L226 Difference]: Without dead ends: 208 [2018-12-01 13:44:06,401 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-01 13:44:06,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-12-01 13:44:06,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2018-12-01 13:44:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-12-01 13:44:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2018-12-01 13:44:06,406 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 54 [2018-12-01 13:44:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:06,406 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2018-12-01 13:44:06,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-01 13:44:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2018-12-01 13:44:06,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-12-01 13:44:06,407 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:06,407 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:06,407 INFO L423 AbstractCegarLoop]: === Iteration 14 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:06,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:06,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1491778423, now seen corresponding path program 4 times [2018-12-01 13:44:06,407 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:06,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:06,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:06,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:06,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-12-01 13:44:06,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:06,467 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:06,473 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 13:44:06,481 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 13:44:06,481 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:06,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-12-01 13:44:06,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:06,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-12-01 13:44:06,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-01 13:44:06,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-01 13:44:06,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-12-01 13:44:06,547 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand 12 states. [2018-12-01 13:44:06,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:06,604 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2018-12-01 13:44:06,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-01 13:44:06,605 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2018-12-01 13:44:06,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:06,605 INFO L225 Difference]: With dead ends: 256 [2018-12-01 13:44:06,605 INFO L226 Difference]: Without dead ends: 220 [2018-12-01 13:44:06,606 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-12-01 13:44:06,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-12-01 13:44:06,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2018-12-01 13:44:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-12-01 13:44:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 232 transitions. [2018-12-01 13:44:06,613 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 232 transitions. Word has length 66 [2018-12-01 13:44:06,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:06,613 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 232 transitions. [2018-12-01 13:44:06,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-01 13:44:06,613 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 232 transitions. [2018-12-01 13:44:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-12-01 13:44:06,614 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:06,614 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:06,614 INFO L423 AbstractCegarLoop]: === Iteration 15 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:06,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:06,615 INFO L82 PathProgramCache]: Analyzing trace with hash 501489183, now seen corresponding path program 5 times [2018-12-01 13:44:06,615 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:06,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:06,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:06,615 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:06,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-12-01 13:44:06,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:06,694 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:06,701 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 13:44:06,716 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-12-01 13:44:06,716 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:06,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-12-01 13:44:06,805 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:06,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-12-01 13:44:06,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-01 13:44:06,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-01 13:44:06,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-12-01 13:44:06,806 INFO L87 Difference]: Start difference. First operand 214 states and 232 transitions. Second operand 14 states. [2018-12-01 13:44:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:06,836 INFO L93 Difference]: Finished difference Result 268 states and 298 transitions. [2018-12-01 13:44:06,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-01 13:44:06,837 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2018-12-01 13:44:06,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:06,837 INFO L225 Difference]: With dead ends: 268 [2018-12-01 13:44:06,838 INFO L226 Difference]: Without dead ends: 227 [2018-12-01 13:44:06,838 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-12-01 13:44:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-12-01 13:44:06,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 221. [2018-12-01 13:44:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-12-01 13:44:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 239 transitions. [2018-12-01 13:44:06,844 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 239 transitions. Word has length 78 [2018-12-01 13:44:06,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:06,844 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 239 transitions. [2018-12-01 13:44:06,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-01 13:44:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 239 transitions. [2018-12-01 13:44:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-12-01 13:44:06,844 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:06,845 INFO L402 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:06,845 INFO L423 AbstractCegarLoop]: === Iteration 16 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:06,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:06,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1033999927, now seen corresponding path program 6 times [2018-12-01 13:44:06,845 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:06,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:06,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:06,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:06,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-12-01 13:44:06,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:06,957 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:06,965 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 13:44:06,980 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-12-01 13:44:06,980 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:06,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-12-01 13:44:07,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:07,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-12-01 13:44:07,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-01 13:44:07,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-01 13:44:07,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-12-01 13:44:07,053 INFO L87 Difference]: Start difference. First operand 221 states and 239 transitions. Second operand 16 states. [2018-12-01 13:44:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:07,101 INFO L93 Difference]: Finished difference Result 275 states and 305 transitions. [2018-12-01 13:44:07,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-01 13:44:07,101 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2018-12-01 13:44:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:07,102 INFO L225 Difference]: With dead ends: 275 [2018-12-01 13:44:07,102 INFO L226 Difference]: Without dead ends: 234 [2018-12-01 13:44:07,102 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-12-01 13:44:07,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-12-01 13:44:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 228. [2018-12-01 13:44:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-12-01 13:44:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 246 transitions. [2018-12-01 13:44:07,107 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 246 transitions. Word has length 90 [2018-12-01 13:44:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:07,107 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 246 transitions. [2018-12-01 13:44:07,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-01 13:44:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 246 transitions. [2018-12-01 13:44:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-12-01 13:44:07,108 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:07,109 INFO L402 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:07,109 INFO L423 AbstractCegarLoop]: === Iteration 17 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:07,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:07,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1169786079, now seen corresponding path program 7 times [2018-12-01 13:44:07,109 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:07,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:07,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:07,110 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:07,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-12-01 13:44:07,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:07,221 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:07,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:07,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-12-01 13:44:07,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:07,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-12-01 13:44:07,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-01 13:44:07,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-01 13:44:07,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-12-01 13:44:07,370 INFO L87 Difference]: Start difference. First operand 228 states and 246 transitions. Second operand 18 states. [2018-12-01 13:44:07,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:07,419 INFO L93 Difference]: Finished difference Result 282 states and 312 transitions. [2018-12-01 13:44:07,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-01 13:44:07,419 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2018-12-01 13:44:07,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:07,420 INFO L225 Difference]: With dead ends: 282 [2018-12-01 13:44:07,420 INFO L226 Difference]: Without dead ends: 241 [2018-12-01 13:44:07,421 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 95 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-12-01 13:44:07,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-12-01 13:44:07,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2018-12-01 13:44:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-12-01 13:44:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 253 transitions. [2018-12-01 13:44:07,426 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 253 transitions. Word has length 102 [2018-12-01 13:44:07,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:07,427 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 253 transitions. [2018-12-01 13:44:07,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-01 13:44:07,427 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 253 transitions. [2018-12-01 13:44:07,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-12-01 13:44:07,428 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:07,428 INFO L402 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:07,429 INFO L423 AbstractCegarLoop]: === Iteration 18 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:07,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:07,429 INFO L82 PathProgramCache]: Analyzing trace with hash 117714501, now seen corresponding path program 8 times [2018-12-01 13:44:07,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:07,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:07,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:07,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:07,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-12-01 13:44:07,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:07,562 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:07,569 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 13:44:07,587 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 13:44:07,587 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:07,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-12-01 13:44:07,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:07,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-12-01 13:44:07,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-01 13:44:07,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-01 13:44:07,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-12-01 13:44:07,683 INFO L87 Difference]: Start difference. First operand 235 states and 253 transitions. Second operand 20 states. [2018-12-01 13:44:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:07,731 INFO L93 Difference]: Finished difference Result 289 states and 319 transitions. [2018-12-01 13:44:07,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-01 13:44:07,731 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 149 [2018-12-01 13:44:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:07,732 INFO L225 Difference]: With dead ends: 289 [2018-12-01 13:44:07,732 INFO L226 Difference]: Without dead ends: 248 [2018-12-01 13:44:07,733 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 141 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-12-01 13:44:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-12-01 13:44:07,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 242. [2018-12-01 13:44:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-12-01 13:44:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 260 transitions. [2018-12-01 13:44:07,739 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 260 transitions. Word has length 149 [2018-12-01 13:44:07,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:07,739 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 260 transitions. [2018-12-01 13:44:07,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-01 13:44:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 260 transitions. [2018-12-01 13:44:07,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-12-01 13:44:07,741 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:07,741 INFO L402 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:07,741 INFO L423 AbstractCegarLoop]: === Iteration 19 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:07,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:07,742 INFO L82 PathProgramCache]: Analyzing trace with hash 497785759, now seen corresponding path program 9 times [2018-12-01 13:44:07,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:07,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:07,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:07,742 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:07,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-12-01 13:44:07,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:07,879 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:07,885 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 13:44:07,904 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-12-01 13:44:07,904 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:07,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-12-01 13:44:08,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:08,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-12-01 13:44:08,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-01 13:44:08,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-01 13:44:08,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-12-01 13:44:08,032 INFO L87 Difference]: Start difference. First operand 242 states and 260 transitions. Second operand 22 states. [2018-12-01 13:44:08,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:08,092 INFO L93 Difference]: Finished difference Result 296 states and 326 transitions. [2018-12-01 13:44:08,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-01 13:44:08,092 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 126 [2018-12-01 13:44:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:08,093 INFO L225 Difference]: With dead ends: 296 [2018-12-01 13:44:08,093 INFO L226 Difference]: Without dead ends: 255 [2018-12-01 13:44:08,093 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 117 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-12-01 13:44:08,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-12-01 13:44:08,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2018-12-01 13:44:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-12-01 13:44:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 267 transitions. [2018-12-01 13:44:08,099 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 267 transitions. Word has length 126 [2018-12-01 13:44:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:08,099 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 267 transitions. [2018-12-01 13:44:08,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-01 13:44:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 267 transitions. [2018-12-01 13:44:08,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-12-01 13:44:08,101 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:08,101 INFO L402 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:08,101 INFO L423 AbstractCegarLoop]: === Iteration 20 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:08,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:08,102 INFO L82 PathProgramCache]: Analyzing trace with hash -911147131, now seen corresponding path program 10 times [2018-12-01 13:44:08,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:08,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:08,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:08,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:08,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2018-12-01 13:44:08,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:08,266 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:08,272 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 13:44:08,293 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 13:44:08,293 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:08,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2018-12-01 13:44:08,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:08,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-12-01 13:44:08,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-01 13:44:08,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-01 13:44:08,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-12-01 13:44:08,434 INFO L87 Difference]: Start difference. First operand 249 states and 267 transitions. Second operand 24 states. [2018-12-01 13:44:08,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:08,506 INFO L93 Difference]: Finished difference Result 303 states and 333 transitions. [2018-12-01 13:44:08,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-12-01 13:44:08,507 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 173 [2018-12-01 13:44:08,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:08,508 INFO L225 Difference]: With dead ends: 303 [2018-12-01 13:44:08,508 INFO L226 Difference]: Without dead ends: 262 [2018-12-01 13:44:08,509 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 163 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-12-01 13:44:08,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-12-01 13:44:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2018-12-01 13:44:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-12-01 13:44:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 274 transitions. [2018-12-01 13:44:08,517 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 274 transitions. Word has length 173 [2018-12-01 13:44:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:08,517 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 274 transitions. [2018-12-01 13:44:08,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-01 13:44:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 274 transitions. [2018-12-01 13:44:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-12-01 13:44:08,520 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:08,520 INFO L402 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:08,520 INFO L423 AbstractCegarLoop]: === Iteration 21 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:08,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:08,521 INFO L82 PathProgramCache]: Analyzing trace with hash 705676187, now seen corresponding path program 11 times [2018-12-01 13:44:08,521 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:08,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:08,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:08,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:08,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-12-01 13:44:08,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:08,729 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:08,736 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 13:44:08,772 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2018-12-01 13:44:08,773 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:08,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-12-01 13:44:08,924 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:08,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-12-01 13:44:08,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-12-01 13:44:08,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-12-01 13:44:08,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-12-01 13:44:08,925 INFO L87 Difference]: Start difference. First operand 256 states and 274 transitions. Second operand 26 states. [2018-12-01 13:44:08,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:08,978 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2018-12-01 13:44:08,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-12-01 13:44:08,978 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 185 [2018-12-01 13:44:08,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:08,979 INFO L225 Difference]: With dead ends: 310 [2018-12-01 13:44:08,979 INFO L226 Difference]: Without dead ends: 269 [2018-12-01 13:44:08,980 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 174 SyntacticMatches, 11 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-12-01 13:44:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-12-01 13:44:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2018-12-01 13:44:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-12-01 13:44:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 281 transitions. [2018-12-01 13:44:08,984 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 281 transitions. Word has length 185 [2018-12-01 13:44:08,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:08,984 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 281 transitions. [2018-12-01 13:44:08,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-12-01 13:44:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 281 transitions. [2018-12-01 13:44:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-12-01 13:44:08,984 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:08,985 INFO L402 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:08,985 INFO L423 AbstractCegarLoop]: === Iteration 22 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:08,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash 219789705, now seen corresponding path program 12 times [2018-12-01 13:44:08,985 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:08,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:08,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:08,986 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:08,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-12-01 13:44:09,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:09,175 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:09,181 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 13:44:09,221 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-12-01 13:44:09,221 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:09,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-12-01 13:44:09,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:09,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-12-01 13:44:09,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-01 13:44:09,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-01 13:44:09,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-12-01 13:44:09,382 INFO L87 Difference]: Start difference. First operand 263 states and 281 transitions. Second operand 28 states. [2018-12-01 13:44:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:09,462 INFO L93 Difference]: Finished difference Result 317 states and 347 transitions. [2018-12-01 13:44:09,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-01 13:44:09,463 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 162 [2018-12-01 13:44:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:09,463 INFO L225 Difference]: With dead ends: 317 [2018-12-01 13:44:09,463 INFO L226 Difference]: Without dead ends: 276 [2018-12-01 13:44:09,464 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 150 SyntacticMatches, 12 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-12-01 13:44:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-12-01 13:44:09,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2018-12-01 13:44:09,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-12-01 13:44:09,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 288 transitions. [2018-12-01 13:44:09,467 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 288 transitions. Word has length 162 [2018-12-01 13:44:09,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:09,468 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 288 transitions. [2018-12-01 13:44:09,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-12-01 13:44:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 288 transitions. [2018-12-01 13:44:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-12-01 13:44:09,469 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:09,469 INFO L402 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:09,469 INFO L423 AbstractCegarLoop]: === Iteration 23 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:09,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:09,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1595267359, now seen corresponding path program 13 times [2018-12-01 13:44:09,470 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:09,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:09,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:09,470 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:09,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-12-01 13:44:09,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:09,687 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:09,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:09,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-12-01 13:44:09,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:09,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-12-01 13:44:09,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-12-01 13:44:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-12-01 13:44:09,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-12-01 13:44:09,889 INFO L87 Difference]: Start difference. First operand 270 states and 288 transitions. Second operand 30 states. [2018-12-01 13:44:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:09,969 INFO L93 Difference]: Finished difference Result 324 states and 354 transitions. [2018-12-01 13:44:09,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-12-01 13:44:09,969 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 174 [2018-12-01 13:44:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:09,970 INFO L225 Difference]: With dead ends: 324 [2018-12-01 13:44:09,970 INFO L226 Difference]: Without dead ends: 283 [2018-12-01 13:44:09,970 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 161 SyntacticMatches, 13 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-12-01 13:44:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-12-01 13:44:09,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 277. [2018-12-01 13:44:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-12-01 13:44:09,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 295 transitions. [2018-12-01 13:44:09,976 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 295 transitions. Word has length 174 [2018-12-01 13:44:09,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:09,976 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 295 transitions. [2018-12-01 13:44:09,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-12-01 13:44:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 295 transitions. [2018-12-01 13:44:09,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-12-01 13:44:09,978 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:09,978 INFO L402 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:09,978 INFO L423 AbstractCegarLoop]: === Iteration 24 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:09,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:09,979 INFO L82 PathProgramCache]: Analyzing trace with hash -611151355, now seen corresponding path program 14 times [2018-12-01 13:44:09,979 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:09,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:09,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:09,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:09,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2018-12-01 13:44:10,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:10,228 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:10,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 13:44:10,256 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 13:44:10,256 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:10,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2018-12-01 13:44:10,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:10,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-12-01 13:44:10,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-12-01 13:44:10,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-12-01 13:44:10,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-12-01 13:44:10,462 INFO L87 Difference]: Start difference. First operand 277 states and 295 transitions. Second operand 32 states. [2018-12-01 13:44:10,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:10,525 INFO L93 Difference]: Finished difference Result 331 states and 361 transitions. [2018-12-01 13:44:10,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-12-01 13:44:10,525 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 221 [2018-12-01 13:44:10,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:10,526 INFO L225 Difference]: With dead ends: 331 [2018-12-01 13:44:10,526 INFO L226 Difference]: Without dead ends: 290 [2018-12-01 13:44:10,526 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 207 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-12-01 13:44:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-12-01 13:44:10,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 284. [2018-12-01 13:44:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-12-01 13:44:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 302 transitions. [2018-12-01 13:44:10,530 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 302 transitions. Word has length 221 [2018-12-01 13:44:10,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:10,530 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 302 transitions. [2018-12-01 13:44:10,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-12-01 13:44:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 302 transitions. [2018-12-01 13:44:10,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-12-01 13:44:10,531 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:10,531 INFO L402 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:10,531 INFO L423 AbstractCegarLoop]: === Iteration 25 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:10,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:10,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2030663963, now seen corresponding path program 15 times [2018-12-01 13:44:10,532 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:10,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:10,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:10,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:10,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-12-01 13:44:10,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:10,828 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:10,834 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 13:44:10,862 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-12-01 13:44:10,862 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:10,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-12-01 13:44:11,083 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:11,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-12-01 13:44:11,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-12-01 13:44:11,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-12-01 13:44:11,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-12-01 13:44:11,084 INFO L87 Difference]: Start difference. First operand 284 states and 302 transitions. Second operand 34 states. [2018-12-01 13:44:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:11,153 INFO L93 Difference]: Finished difference Result 338 states and 368 transitions. [2018-12-01 13:44:11,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-12-01 13:44:11,153 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 233 [2018-12-01 13:44:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:11,154 INFO L225 Difference]: With dead ends: 338 [2018-12-01 13:44:11,154 INFO L226 Difference]: Without dead ends: 297 [2018-12-01 13:44:11,154 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 218 SyntacticMatches, 15 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-12-01 13:44:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-12-01 13:44:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 291. [2018-12-01 13:44:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-12-01 13:44:11,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 309 transitions. [2018-12-01 13:44:11,158 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 309 transitions. Word has length 233 [2018-12-01 13:44:11,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:11,158 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 309 transitions. [2018-12-01 13:44:11,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-12-01 13:44:11,158 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 309 transitions. [2018-12-01 13:44:11,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-12-01 13:44:11,159 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:11,159 INFO L402 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:11,159 INFO L423 AbstractCegarLoop]: === Iteration 26 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:11,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:11,159 INFO L82 PathProgramCache]: Analyzing trace with hash -687614967, now seen corresponding path program 16 times [2018-12-01 13:44:11,159 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:11,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:11,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:11,160 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:11,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-12-01 13:44:11,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:11,450 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:11,456 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 13:44:11,486 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 13:44:11,486 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:11,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-12-01 13:44:11,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:11,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-12-01 13:44:11,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-01 13:44:11,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-01 13:44:11,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-12-01 13:44:11,762 INFO L87 Difference]: Start difference. First operand 291 states and 309 transitions. Second operand 36 states. [2018-12-01 13:44:11,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:11,859 INFO L93 Difference]: Finished difference Result 345 states and 375 transitions. [2018-12-01 13:44:11,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-01 13:44:11,859 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 210 [2018-12-01 13:44:11,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:11,860 INFO L225 Difference]: With dead ends: 345 [2018-12-01 13:44:11,860 INFO L226 Difference]: Without dead ends: 304 [2018-12-01 13:44:11,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-12-01 13:44:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-12-01 13:44:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2018-12-01 13:44:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-12-01 13:44:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 316 transitions. [2018-12-01 13:44:11,865 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 316 transitions. Word has length 210 [2018-12-01 13:44:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:11,865 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 316 transitions. [2018-12-01 13:44:11,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-01 13:44:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 316 transitions. [2018-12-01 13:44:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-12-01 13:44:11,866 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:11,866 INFO L402 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:11,866 INFO L423 AbstractCegarLoop]: === Iteration 27 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:11,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:11,866 INFO L82 PathProgramCache]: Analyzing trace with hash 362634203, now seen corresponding path program 17 times [2018-12-01 13:44:11,866 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:11,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:11,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:11,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:11,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-12-01 13:44:12,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:12,206 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:12,214 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 13:44:12,274 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2018-12-01 13:44:12,274 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:12,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-12-01 13:44:12,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:12,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-12-01 13:44:12,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-12-01 13:44:12,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-12-01 13:44:12,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-12-01 13:44:12,536 INFO L87 Difference]: Start difference. First operand 298 states and 316 transitions. Second operand 38 states. [2018-12-01 13:44:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:12,607 INFO L93 Difference]: Finished difference Result 352 states and 382 transitions. [2018-12-01 13:44:12,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-12-01 13:44:12,607 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 257 [2018-12-01 13:44:12,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:12,608 INFO L225 Difference]: With dead ends: 352 [2018-12-01 13:44:12,608 INFO L226 Difference]: Without dead ends: 311 [2018-12-01 13:44:12,609 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 240 SyntacticMatches, 17 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-12-01 13:44:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-12-01 13:44:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 305. [2018-12-01 13:44:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-12-01 13:44:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 323 transitions. [2018-12-01 13:44:12,613 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 323 transitions. Word has length 257 [2018-12-01 13:44:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:12,613 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 323 transitions. [2018-12-01 13:44:12,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-12-01 13:44:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 323 transitions. [2018-12-01 13:44:12,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-12-01 13:44:12,614 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:12,614 INFO L402 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:12,614 INFO L423 AbstractCegarLoop]: === Iteration 28 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:12,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:12,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2128176261, now seen corresponding path program 18 times [2018-12-01 13:44:12,614 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:12,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:12,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:12,615 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:12,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-12-01 13:44:12,953 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:12,953 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:12,959 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 13:44:13,007 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2018-12-01 13:44:13,007 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:13,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:13,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-12-01 13:44:13,366 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:13,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-12-01 13:44:13,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-12-01 13:44:13,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-12-01 13:44:13,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-12-01 13:44:13,366 INFO L87 Difference]: Start difference. First operand 305 states and 323 transitions. Second operand 40 states. [2018-12-01 13:44:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:13,473 INFO L93 Difference]: Finished difference Result 359 states and 389 transitions. [2018-12-01 13:44:13,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-12-01 13:44:13,473 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 269 [2018-12-01 13:44:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:13,474 INFO L225 Difference]: With dead ends: 359 [2018-12-01 13:44:13,474 INFO L226 Difference]: Without dead ends: 318 [2018-12-01 13:44:13,475 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 251 SyntacticMatches, 18 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-12-01 13:44:13,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-12-01 13:44:13,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 312. [2018-12-01 13:44:13,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-12-01 13:44:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 330 transitions. [2018-12-01 13:44:13,478 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 330 transitions. Word has length 269 [2018-12-01 13:44:13,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:13,479 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 330 transitions. [2018-12-01 13:44:13,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-12-01 13:44:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 330 transitions. [2018-12-01 13:44:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-12-01 13:44:13,480 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:13,480 INFO L402 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:13,480 INFO L423 AbstractCegarLoop]: === Iteration 29 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:13,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:13,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1319497371, now seen corresponding path program 19 times [2018-12-01 13:44:13,480 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:13,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:13,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:13,481 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:13,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-12-01 13:44:13,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:13,888 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:13,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:13,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-12-01 13:44:14,241 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:14,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-12-01 13:44:14,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-12-01 13:44:14,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-12-01 13:44:14,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-12-01 13:44:14,242 INFO L87 Difference]: Start difference. First operand 312 states and 330 transitions. Second operand 42 states. [2018-12-01 13:44:14,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:14,363 INFO L93 Difference]: Finished difference Result 366 states and 396 transitions. [2018-12-01 13:44:14,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-12-01 13:44:14,364 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 281 [2018-12-01 13:44:14,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:14,365 INFO L225 Difference]: With dead ends: 366 [2018-12-01 13:44:14,365 INFO L226 Difference]: Without dead ends: 325 [2018-12-01 13:44:14,366 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 262 SyntacticMatches, 19 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-12-01 13:44:14,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-12-01 13:44:14,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 319. [2018-12-01 13:44:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-01 13:44:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 337 transitions. [2018-12-01 13:44:14,370 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 337 transitions. Word has length 281 [2018-12-01 13:44:14,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:14,371 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 337 transitions. [2018-12-01 13:44:14,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-12-01 13:44:14,371 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 337 transitions. [2018-12-01 13:44:14,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-12-01 13:44:14,372 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:14,372 INFO L402 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:14,373 INFO L423 AbstractCegarLoop]: === Iteration 30 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:14,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:14,373 INFO L82 PathProgramCache]: Analyzing trace with hash 973391301, now seen corresponding path program 20 times [2018-12-01 13:44:14,373 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:14,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:14,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:14,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:14,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-12-01 13:44:14,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:14,770 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:14,775 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 13:44:14,803 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 13:44:14,803 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:14,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-12-01 13:44:15,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:15,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-12-01 13:44:15,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-12-01 13:44:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-12-01 13:44:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-12-01 13:44:15,164 INFO L87 Difference]: Start difference. First operand 319 states and 337 transitions. Second operand 44 states. [2018-12-01 13:44:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:15,304 INFO L93 Difference]: Finished difference Result 373 states and 403 transitions. [2018-12-01 13:44:15,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-12-01 13:44:15,304 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 293 [2018-12-01 13:44:15,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:15,305 INFO L225 Difference]: With dead ends: 373 [2018-12-01 13:44:15,305 INFO L226 Difference]: Without dead ends: 332 [2018-12-01 13:44:15,306 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 273 SyntacticMatches, 20 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-12-01 13:44:15,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-12-01 13:44:15,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 326. [2018-12-01 13:44:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-12-01 13:44:15,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 344 transitions. [2018-12-01 13:44:15,311 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 344 transitions. Word has length 293 [2018-12-01 13:44:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:15,311 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 344 transitions. [2018-12-01 13:44:15,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-12-01 13:44:15,311 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 344 transitions. [2018-12-01 13:44:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-12-01 13:44:15,313 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:15,313 INFO L402 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:15,313 INFO L423 AbstractCegarLoop]: === Iteration 31 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:15,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:15,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1062260389, now seen corresponding path program 21 times [2018-12-01 13:44:15,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:15,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:15,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:15,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:15,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-12-01 13:44:15,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:15,791 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:15,801 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 13:44:15,842 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-12-01 13:44:15,842 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:15,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-12-01 13:44:16,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:16,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-12-01 13:44:16,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-12-01 13:44:16,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-12-01 13:44:16,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-12-01 13:44:16,248 INFO L87 Difference]: Start difference. First operand 326 states and 344 transitions. Second operand 46 states. [2018-12-01 13:44:16,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:16,378 INFO L93 Difference]: Finished difference Result 380 states and 410 transitions. [2018-12-01 13:44:16,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-12-01 13:44:16,378 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 305 [2018-12-01 13:44:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:16,379 INFO L225 Difference]: With dead ends: 380 [2018-12-01 13:44:16,379 INFO L226 Difference]: Without dead ends: 339 [2018-12-01 13:44:16,380 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 284 SyntacticMatches, 21 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-12-01 13:44:16,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-12-01 13:44:16,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2018-12-01 13:44:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-12-01 13:44:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 351 transitions. [2018-12-01 13:44:16,385 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 351 transitions. Word has length 305 [2018-12-01 13:44:16,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:16,386 INFO L480 AbstractCegarLoop]: Abstraction has 333 states and 351 transitions. [2018-12-01 13:44:16,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-12-01 13:44:16,386 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 351 transitions. [2018-12-01 13:44:16,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-12-01 13:44:16,387 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:16,388 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:16,388 INFO L423 AbstractCegarLoop]: === Iteration 32 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:16,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:16,388 INFO L82 PathProgramCache]: Analyzing trace with hash -953846011, now seen corresponding path program 22 times [2018-12-01 13:44:16,388 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:16,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:16,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:16,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:16,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-01 13:44:16,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:16,881 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:16,888 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 13:44:16,923 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 13:44:16,923 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:16,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-01 13:44:17,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:17,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-12-01 13:44:17,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-12-01 13:44:17,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-12-01 13:44:17,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-12-01 13:44:17,322 INFO L87 Difference]: Start difference. First operand 333 states and 351 transitions. Second operand 48 states. [2018-12-01 13:44:17,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:17,450 INFO L93 Difference]: Finished difference Result 387 states and 417 transitions. [2018-12-01 13:44:17,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-12-01 13:44:17,451 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 317 [2018-12-01 13:44:17,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:17,451 INFO L225 Difference]: With dead ends: 387 [2018-12-01 13:44:17,451 INFO L226 Difference]: Without dead ends: 346 [2018-12-01 13:44:17,452 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 295 SyntacticMatches, 22 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-12-01 13:44:17,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-12-01 13:44:17,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 340. [2018-12-01 13:44:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-12-01 13:44:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 358 transitions. [2018-12-01 13:44:17,455 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 358 transitions. Word has length 317 [2018-12-01 13:44:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:17,456 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 358 transitions. [2018-12-01 13:44:17,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-12-01 13:44:17,456 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 358 transitions. [2018-12-01 13:44:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-12-01 13:44:17,457 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:17,457 INFO L402 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:17,457 INFO L423 AbstractCegarLoop]: === Iteration 33 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:17,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:17,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1555749861, now seen corresponding path program 23 times [2018-12-01 13:44:17,457 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:17,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:17,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:17,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:17,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 2003 proven. 936 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-12-01 13:44:17,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:17,960 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:17,967 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 13:44:18,025 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2018-12-01 13:44:18,025 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:18,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 2003 proven. 936 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-12-01 13:44:18,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:18,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-12-01 13:44:18,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-12-01 13:44:18,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-12-01 13:44:18,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1475, Unknown=0, NotChecked=0, Total=1892 [2018-12-01 13:44:18,127 INFO L87 Difference]: Start difference. First operand 340 states and 358 transitions. Second operand 44 states. [2018-12-01 13:44:19,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:19,202 INFO L93 Difference]: Finished difference Result 568 states and 588 transitions. [2018-12-01 13:44:19,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-12-01 13:44:19,203 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 329 [2018-12-01 13:44:19,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:19,204 INFO L225 Difference]: With dead ends: 568 [2018-12-01 13:44:19,204 INFO L226 Difference]: Without dead ends: 399 [2018-12-01 13:44:19,207 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2372 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3952, Invalid=9388, Unknown=0, NotChecked=0, Total=13340 [2018-12-01 13:44:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-12-01 13:44:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 387. [2018-12-01 13:44:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-12-01 13:44:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 405 transitions. [2018-12-01 13:44:19,212 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 405 transitions. Word has length 329 [2018-12-01 13:44:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:19,212 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 405 transitions. [2018-12-01 13:44:19,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-12-01 13:44:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 405 transitions. [2018-12-01 13:44:19,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-12-01 13:44:19,214 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:19,214 INFO L402 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:19,214 INFO L423 AbstractCegarLoop]: === Iteration 34 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:19,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:19,215 INFO L82 PathProgramCache]: Analyzing trace with hash 878541535, now seen corresponding path program 24 times [2018-12-01 13:44:19,215 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:19,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:19,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:19,215 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:19,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-12-01 13:44:19,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:19,754 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:19,760 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 13:44:19,812 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-12-01 13:44:19,812 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:19,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-12-01 13:44:20,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:20,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-12-01 13:44:20,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-12-01 13:44:20,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-12-01 13:44:20,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-12-01 13:44:20,292 INFO L87 Difference]: Start difference. First operand 387 states and 405 transitions. Second operand 50 states. [2018-12-01 13:44:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:20,421 INFO L93 Difference]: Finished difference Result 436 states and 463 transitions. [2018-12-01 13:44:20,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-12-01 13:44:20,421 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 294 [2018-12-01 13:44:20,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:20,423 INFO L225 Difference]: With dead ends: 436 [2018-12-01 13:44:20,423 INFO L226 Difference]: Without dead ends: 388 [2018-12-01 13:44:20,424 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 271 SyntacticMatches, 23 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-12-01 13:44:20,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-12-01 13:44:20,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-12-01 13:44:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-12-01 13:44:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 398 transitions. [2018-12-01 13:44:20,428 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 398 transitions. Word has length 294 [2018-12-01 13:44:20,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:20,428 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 398 transitions. [2018-12-01 13:44:20,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-12-01 13:44:20,428 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 398 transitions. [2018-12-01 13:44:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-12-01 13:44:20,430 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:20,430 INFO L402 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:20,430 INFO L423 AbstractCegarLoop]: === Iteration 35 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:20,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:20,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1388824841, now seen corresponding path program 25 times [2018-12-01 13:44:20,431 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:20,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:20,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:20,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:20,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3578 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-12-01 13:44:20,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:20,984 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:20,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:21,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3578 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-12-01 13:44:21,483 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:21,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-12-01 13:44:21,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-12-01 13:44:21,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-12-01 13:44:21,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-12-01 13:44:21,484 INFO L87 Difference]: Start difference. First operand 383 states and 398 transitions. Second operand 52 states. [2018-12-01 13:44:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:21,608 INFO L93 Difference]: Finished difference Result 424 states and 446 transitions. [2018-12-01 13:44:21,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-12-01 13:44:21,608 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 306 [2018-12-01 13:44:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:21,609 INFO L225 Difference]: With dead ends: 424 [2018-12-01 13:44:21,609 INFO L226 Difference]: Without dead ends: 376 [2018-12-01 13:44:21,610 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 282 SyntacticMatches, 24 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-12-01 13:44:21,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-12-01 13:44:21,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2018-12-01 13:44:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-12-01 13:44:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 384 transitions. [2018-12-01 13:44:21,613 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 384 transitions. Word has length 306 [2018-12-01 13:44:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:21,613 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 384 transitions. [2018-12-01 13:44:21,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-12-01 13:44:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 384 transitions. [2018-12-01 13:44:21,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-12-01 13:44:21,615 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:21,615 INFO L402 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:21,615 INFO L423 AbstractCegarLoop]: === Iteration 36 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:21,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:21,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1058729569, now seen corresponding path program 26 times [2018-12-01 13:44:21,615 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:21,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:21,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:21,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:44:21,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3877 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-12-01 13:44:22,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:22,206 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:22,212 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 13:44:22,241 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 13:44:22,241 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:22,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3877 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-12-01 13:44:22,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:22,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-12-01 13:44:22,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-12-01 13:44:22,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-12-01 13:44:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-12-01 13:44:22,783 INFO L87 Difference]: Start difference. First operand 372 states and 384 transitions. Second operand 54 states. [2018-12-01 13:44:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:22,902 INFO L93 Difference]: Finished difference Result 405 states and 422 transitions. [2018-12-01 13:44:22,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-12-01 13:44:22,902 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 318 [2018-12-01 13:44:22,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:22,903 INFO L225 Difference]: With dead ends: 405 [2018-12-01 13:44:22,903 INFO L226 Difference]: Without dead ends: 357 [2018-12-01 13:44:22,903 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 293 SyntacticMatches, 25 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-12-01 13:44:22,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-12-01 13:44:22,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 354. [2018-12-01 13:44:22,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-12-01 13:44:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 363 transitions. [2018-12-01 13:44:22,907 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 363 transitions. Word has length 318 [2018-12-01 13:44:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:22,907 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 363 transitions. [2018-12-01 13:44:22,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-12-01 13:44:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 363 transitions. [2018-12-01 13:44:22,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-12-01 13:44:22,908 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:22,908 INFO L402 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:22,908 INFO L423 AbstractCegarLoop]: === Iteration 37 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:22,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:22,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1790578249, now seen corresponding path program 27 times [2018-12-01 13:44:22,908 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:22,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:22,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:22,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:22,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-12-01 13:44:23,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:23,515 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:23,524 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 13:44:23,584 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-12-01 13:44:23,584 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:23,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-12-01 13:44:24,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:24,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-12-01 13:44:24,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-12-01 13:44:24,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-12-01 13:44:24,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-12-01 13:44:24,146 INFO L87 Difference]: Start difference. First operand 354 states and 363 transitions. Second operand 56 states. [2018-12-01 13:44:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:24,284 INFO L93 Difference]: Finished difference Result 379 states and 391 transitions. [2018-12-01 13:44:24,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-12-01 13:44:24,285 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 330 [2018-12-01 13:44:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:24,285 INFO L225 Difference]: With dead ends: 379 [2018-12-01 13:44:24,285 INFO L226 Difference]: Without dead ends: 331 [2018-12-01 13:44:24,286 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 304 SyntacticMatches, 26 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-12-01 13:44:24,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-12-01 13:44:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2018-12-01 13:44:24,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-12-01 13:44:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 335 transitions. [2018-12-01 13:44:24,289 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 335 transitions. Word has length 330 [2018-12-01 13:44:24,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:24,289 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 335 transitions. [2018-12-01 13:44:24,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-12-01 13:44:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 335 transitions. [2018-12-01 13:44:24,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-12-01 13:44:24,290 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:24,290 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:24,291 INFO L423 AbstractCegarLoop]: === Iteration 38 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:24,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:24,291 INFO L82 PathProgramCache]: Analyzing trace with hash -359461409, now seen corresponding path program 28 times [2018-12-01 13:44:24,291 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:24,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:24,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:24,291 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:24,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-01 13:44:24,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:24,956 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:24,961 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 13:44:24,994 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 13:44:24,994 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:24,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-01 13:44:25,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:25,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-12-01 13:44:25,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-12-01 13:44:25,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-12-01 13:44:25,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-12-01 13:44:25,980 INFO L87 Difference]: Start difference. First operand 329 states and 335 transitions. Second operand 58 states. [2018-12-01 13:44:26,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:26,118 INFO L93 Difference]: Finished difference Result 346 states and 353 transitions. [2018-12-01 13:44:26,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-12-01 13:44:26,118 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 352 [2018-12-01 13:44:26,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:26,119 INFO L225 Difference]: With dead ends: 346 [2018-12-01 13:44:26,119 INFO L226 Difference]: Without dead ends: 298 [2018-12-01 13:44:26,119 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 325 SyntacticMatches, 27 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1809 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-12-01 13:44:26,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-12-01 13:44:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2018-12-01 13:44:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-12-01 13:44:26,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 300 transitions. [2018-12-01 13:44:26,122 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 300 transitions. Word has length 352 [2018-12-01 13:44:26,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:26,123 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 300 transitions. [2018-12-01 13:44:26,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-12-01 13:44:26,123 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 300 transitions. [2018-12-01 13:44:26,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-12-01 13:44:26,124 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:26,124 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:26,124 INFO L423 AbstractCegarLoop]: === Iteration 39 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:26,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:26,124 INFO L82 PathProgramCache]: Analyzing trace with hash 636541765, now seen corresponding path program 29 times [2018-12-01 13:44:26,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:26,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:26,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:26,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:26,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4993 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-01 13:44:26,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:26,810 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:26,816 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 13:44:26,874 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-12-01 13:44:26,874 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:26,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4993 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-01 13:44:27,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:27,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-12-01 13:44:27,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-12-01 13:44:27,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-12-01 13:44:27,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-12-01 13:44:27,462 INFO L87 Difference]: Start difference. First operand 297 states and 300 transitions. Second operand 60 states. [2018-12-01 13:44:27,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:27,604 INFO L93 Difference]: Finished difference Result 306 states and 308 transitions. [2018-12-01 13:44:27,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-12-01 13:44:27,604 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 359 [2018-12-01 13:44:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:27,605 INFO L225 Difference]: With dead ends: 306 [2018-12-01 13:44:27,605 INFO L226 Difference]: Without dead ends: 258 [2018-12-01 13:44:27,606 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 331 SyntacticMatches, 28 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-12-01 13:44:27,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-12-01 13:44:27,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-12-01 13:44:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-12-01 13:44:27,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-12-01 13:44:27,609 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 359 [2018-12-01 13:44:27,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:27,609 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-12-01 13:44:27,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-12-01 13:44:27,610 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-12-01 13:44:27,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-12-01 13:44:27,611 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:44:27,611 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:44:27,611 INFO L423 AbstractCegarLoop]: === Iteration 40 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 13:44:27,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:44:27,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1936044257, now seen corresponding path program 30 times [2018-12-01 13:44:27,612 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:44:27,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:44:27,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:27,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 13:44:27,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:44:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:44:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5193 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-01 13:44:28,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 13:44:28,331 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 13:44:28,337 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 13:44:28,411 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-12-01 13:44:28,411 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 13:44:28,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:44:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5193 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-01 13:44:29,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 13:44:29,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-12-01 13:44:29,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-12-01 13:44:29,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-12-01 13:44:29,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-12-01 13:44:29,050 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 62 states. [2018-12-01 13:44:29,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:44:29,199 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-12-01 13:44:29,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-12-01 13:44:29,199 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 366 [2018-12-01 13:44:29,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:44:29,200 INFO L225 Difference]: With dead ends: 258 [2018-12-01 13:44:29,200 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 13:44:29,200 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 337 SyntacticMatches, 29 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2088 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-12-01 13:44:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 13:44:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 13:44:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 13:44:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 13:44:29,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 366 [2018-12-01 13:44:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:44:29,201 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 13:44:29,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-12-01 13:44:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 13:44:29,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 13:44:29,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 13:44:29,276 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-01 13:44:29,277 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 13:44:29,277 INFO L448 ceAbstractionStarter]: For program point hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,277 INFO L448 ceAbstractionStarter]: For program point hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,277 INFO L448 ceAbstractionStarter]: For program point hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,277 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,277 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,277 INFO L448 ceAbstractionStarter]: For program point hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,277 INFO L444 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (< |hanoi_#in~n| 1))) (and (or (< 30 |hanoi_#in~n|) .cse0 (<= hanoi_~n |hanoi_#in~n|)) (or .cse0 (< 31 |hanoi_#in~n|) (and (<= hanoi_~n 31) (<= 1 hanoi_~n) (not (= 1 hanoi_~n)))))) [2018-12-01 13:44:29,277 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2018-12-01 13:44:29,277 INFO L448 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,278 INFO L448 ceAbstractionStarter]: For program point L20-4(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,278 INFO L448 ceAbstractionStarter]: For program point L20-5(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,278 INFO L448 ceAbstractionStarter]: For program point L20-6(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,278 INFO L448 ceAbstractionStarter]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2018-12-01 13:44:29,278 INFO L448 ceAbstractionStarter]: For program point L20-7(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,278 INFO L448 ceAbstractionStarter]: For program point hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,278 INFO L451 ceAbstractionStarter]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2018-12-01 13:44:29,278 INFO L448 ceAbstractionStarter]: For program point hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-01 13:44:29,278 INFO L448 ceAbstractionStarter]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2018-12-01 13:44:29,278 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 13:44:29,278 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-01 13:44:29,278 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 13:44:29,278 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 13:44:29,278 INFO L448 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2018-12-01 13:44:29,279 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 34) no Hoare annotation was computed. [2018-12-01 13:44:29,279 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2018-12-01 13:44:29,279 INFO L444 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (and (<= main_~n~0 31) (<= 1 main_~n~0)) [2018-12-01 13:44:29,279 INFO L448 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-12-01 13:44:29,279 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2018-12-01 13:44:29,279 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2018-12-01 13:44:29,279 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2018-12-01 13:44:29,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 01:44:29 BoogieIcfgContainer [2018-12-01 13:44:29,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 13:44:29,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 13:44:29,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 13:44:29,282 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 13:44:29,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:44:04" (3/4) ... [2018-12-01 13:44:29,285 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 13:44:29,291 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 13:44:29,291 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2018-12-01 13:44:29,291 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 13:44:29,295 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-01 13:44:29,295 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-01 13:44:29,295 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-01 13:44:29,326 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cc35148f-c82a-48d0-8609-4695acac7102/bin-2019/uautomizer/witness.graphml [2018-12-01 13:44:29,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 13:44:29,327 INFO L168 Benchmark]: Toolchain (without parser) took 25326.74 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 753.9 MB). Free memory was 961.4 MB in the beginning and 844.0 MB in the end (delta: 117.3 MB). Peak memory consumption was 871.3 MB. Max. memory is 11.5 GB. [2018-12-01 13:44:29,328 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 13:44:29,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.00 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 13:44:29,329 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.82 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 13:44:29,329 INFO L168 Benchmark]: Boogie Preprocessor took 9.87 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 13:44:29,329 INFO L168 Benchmark]: RCFGBuilder took 152.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.0 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -114.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-12-01 13:44:29,329 INFO L168 Benchmark]: TraceAbstraction took 24974.98 ms. Allocated memory was 1.1 GB in the beginning and 1.8 GB in the end (delta: 666.9 MB). Free memory was 1.1 GB in the beginning and 844.0 MB in the end (delta: 221.2 MB). Peak memory consumption was 888.1 MB. Max. memory is 11.5 GB. [2018-12-01 13:44:29,330 INFO L168 Benchmark]: Witness Printer took 44.56 ms. Allocated memory is still 1.8 GB. Free memory was 844.0 MB in the beginning and 844.0 MB in the end (delta: 24.4 kB). Peak memory consumption was 24.4 kB. Max. memory is 11.5 GB. [2018-12-01 13:44:29,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 129.00 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.82 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.87 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 152.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.0 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -114.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24974.98 ms. Allocated memory was 1.1 GB in the beginning and 1.8 GB in the end (delta: 666.9 MB). Free memory was 1.1 GB in the beginning and 844.0 MB in the end (delta: 221.2 MB). Peak memory consumption was 888.1 MB. Max. memory is 11.5 GB. * Witness Printer took 44.56 ms. Allocated memory is still 1.8 GB. Free memory was 844.0 MB in the beginning and 844.0 MB in the end (delta: 24.4 kB). Peak memory consumption was 24.4 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 6 error locations. SAFE Result, 24.9s OverallTime, 40 OverallIterations, 32 TraceHistogramMax, 4.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1107 SDtfs, 2516 SDslu, 12342 SDs, 0 SdLazy, 6152 SolverSat, 287 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7816 GetRequests, 6231 SyntacticMatches, 438 SemanticMatches, 1147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23754 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=387occurred in iteration=33, 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: 0.2s AutomataMinimizationTime, 40 MinimizatonAttempts, 215 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 23 PreInvPairs, 23 NumberOfFragments, 45 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 323 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 13342 NumberOfCodeBlocks, 13247 NumberOfCodeBlocksAsserted, 387 NumberOfCheckSat, 13266 ConstructedInterpolants, 0 QuantifiedInterpolants, 7208634 SizeOfPredicates, 60 NumberOfNonLiveVariables, 11341 ConjunctsInSsa, 1092 ConjunctsInUnsatCore, 76 InterpolantComputations, 4 PerfectInterpolantSequences, 69969/132658 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...