./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/recHanoi03-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi03-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/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 32bit --witnessprinter.graph.data.programhash 887ada769b510ae5d273618525924110908f2b5f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@218cd1f2 --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:24:13,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:24:13,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:24:13,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:24:13,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:24:13,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:24:13,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:24:13,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:24:13,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:24:13,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:24:13,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:24:13,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:24:13,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:24:13,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:24:13,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:24:13,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:24:13,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:24:13,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:24:13,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:24:13,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:24:13,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:24:13,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:24:13,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:24:13,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:24:13,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:24:13,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:24:13,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:24:13,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:24:13,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:24:13,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:24:13,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:24:13,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:24:13,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:24:13,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:24:13,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:24:13,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:24:13,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:24:13,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:24:13,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:24:13,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:24:13,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:24:13,347 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-12-07 18:24:13,359 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:24:13,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:24:13,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:24:13,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:24:13,361 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:24:13,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:24:13,361 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:24:13,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:24:13,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:24:13,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:24:13,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:24:13,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:24:13,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:24:13,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:24:13,362 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 18:24:13,362 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:24:13,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:24:13,363 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:24:13,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:24:13,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:24:13,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:24:13,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:24:13,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:24:13,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:24:13,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:24:13,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:24:13,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:24:13,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:24:13,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:24:13,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:24:13,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:24:13,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 887ada769b510ae5d273618525924110908f2b5f [2019-12-07 18:24:13,479 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:24:13,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:24:13,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:24:13,492 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:24:13,492 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:24:13,492 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/../../sv-benchmarks/c/recursive/recHanoi03-2.c [2019-12-07 18:24:13,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/data/f76f2161f/d96cb66cbfce4ddda9093792158344f9/FLAGc64099088 [2019-12-07 18:24:13,905 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:24:13,905 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/sv-benchmarks/c/recursive/recHanoi03-2.c [2019-12-07 18:24:13,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/data/f76f2161f/d96cb66cbfce4ddda9093792158344f9/FLAGc64099088 [2019-12-07 18:24:14,311 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/data/f76f2161f/d96cb66cbfce4ddda9093792158344f9 [2019-12-07 18:24:14,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:24:14,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:24:14,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:24:14,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:24:14,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:24:14,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:24:14" (1/1) ... [2019-12-07 18:24:14,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581f3bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14, skipping insertion in model container [2019-12-07 18:24:14,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:24:14" (1/1) ... [2019-12-07 18:24:14,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:24:14,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:24:14,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:24:14,446 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:24:14,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:24:14,495 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:24:14,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14 WrapperNode [2019-12-07 18:24:14,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:24:14,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:24:14,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:24:14,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:24:14,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14" (1/1) ... [2019-12-07 18:24:14,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14" (1/1) ... [2019-12-07 18:24:14,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:24:14,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:24:14,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:24:14,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:24:14,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14" (1/1) ... [2019-12-07 18:24:14,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14" (1/1) ... [2019-12-07 18:24:14,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14" (1/1) ... [2019-12-07 18:24:14,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14" (1/1) ... [2019-12-07 18:24:14,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14" (1/1) ... [2019-12-07 18:24:14,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14" (1/1) ... [2019-12-07 18:24:14,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14" (1/1) ... [2019-12-07 18:24:14,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:24:14,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:24:14,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:24:14,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:24:14,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/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 [2019-12-07 18:24:14,567 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2019-12-07 18:24:14,568 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2019-12-07 18:24:14,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:24:14,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:24:14,673 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:24:14,673 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 18:24:14,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:24:14 BoogieIcfgContainer [2019-12-07 18:24:14,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:24:14,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:24:14,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:24:14,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:24:14,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:24:14" (1/3) ... [2019-12-07 18:24:14,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d94234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:24:14, skipping insertion in model container [2019-12-07 18:24:14,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:14" (2/3) ... [2019-12-07 18:24:14,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d94234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:24:14, skipping insertion in model container [2019-12-07 18:24:14,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:24:14" (3/3) ... [2019-12-07 18:24:14,679 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2019-12-07 18:24:14,685 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:24:14,689 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 18:24:14,696 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 18:24:14,711 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:24:14,711 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:24:14,711 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:24:14,711 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:24:14,711 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:24:14,711 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:24:14,711 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:24:14,712 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:24:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-07 18:24:14,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 18:24:14,726 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:14,726 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 18:24:14,727 INFO L410 AbstractCegarLoop]: === Iteration 1 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:14,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:14,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1513948958, now seen corresponding path program 1 times [2019-12-07 18:24:14,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:14,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417261658] [2019-12-07 18:24:14,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:14,838 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417261658] [2019-12-07 18:24:14,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:24:14,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:24:14,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486928797] [2019-12-07 18:24:14,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:24:14,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:14,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:24:14,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:24:14,854 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2019-12-07 18:24:14,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:14,913 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-12-07 18:24:14,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:24:14,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 18:24:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:14,920 INFO L225 Difference]: With dead ends: 33 [2019-12-07 18:24:14,920 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 18:24:14,922 INFO L630 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 [2019-12-07 18:24:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 18:24:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 18:24:14,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 18:24:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-12-07 18:24:14,947 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2019-12-07 18:24:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:14,947 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-12-07 18:24:14,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:24:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-12-07 18:24:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 18:24:14,947 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:14,948 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:24:14,948 INFO L410 AbstractCegarLoop]: === Iteration 2 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:14,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:14,948 INFO L82 PathProgramCache]: Analyzing trace with hash -312222520, now seen corresponding path program 1 times [2019-12-07 18:24:14,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:14,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240917063] [2019-12-07 18:24:14,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:14,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240917063] [2019-12-07 18:24:14,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:24:14,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:24:14,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160513025] [2019-12-07 18:24:14,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:24:14,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:14,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:24:14,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:24:14,976 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2019-12-07 18:24:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:15,015 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-12-07 18:24:15,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:24:15,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-07 18:24:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:15,017 INFO L225 Difference]: With dead ends: 39 [2019-12-07 18:24:15,017 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 18:24:15,018 INFO L630 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 [2019-12-07 18:24:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 18:24:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-12-07 18:24:15,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 18:24:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-12-07 18:24:15,025 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2019-12-07 18:24:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:15,025 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-12-07 18:24:15,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:24:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-07 18:24:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 18:24:15,026 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:15,026 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 18:24:15,027 INFO L410 AbstractCegarLoop]: === Iteration 3 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:15,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:15,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1144431293, now seen corresponding path program 1 times [2019-12-07 18:24:15,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:15,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023841015] [2019-12-07 18:24:15,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:15,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023841015] [2019-12-07 18:24:15,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279574511] [2019-12-07 18:24:15,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:15,087 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:24:15,092 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:15,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:15,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-12-07 18:24:15,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242271500] [2019-12-07 18:24:15,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 18:24:15,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:15,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 18:24:15,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:24:15,118 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 7 states. [2019-12-07 18:24:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:15,186 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2019-12-07 18:24:15,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:24:15,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-12-07 18:24:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:15,188 INFO L225 Difference]: With dead ends: 55 [2019-12-07 18:24:15,188 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 18:24:15,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:24:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 18:24:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2019-12-07 18:24:15,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 18:24:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2019-12-07 18:24:15,198 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 12 [2019-12-07 18:24:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:15,198 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2019-12-07 18:24:15,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 18:24:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2019-12-07 18:24:15,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 18:24:15,199 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:15,199 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:24:15,400 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:15,400 INFO L410 AbstractCegarLoop]: === Iteration 4 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:15,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:15,401 INFO L82 PathProgramCache]: Analyzing trace with hash -287349001, now seen corresponding path program 1 times [2019-12-07 18:24:15,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:15,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139825018] [2019-12-07 18:24:15,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 18:24:15,474 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139825018] [2019-12-07 18:24:15,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:24:15,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:24:15,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753048851] [2019-12-07 18:24:15,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:24:15,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:15,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:24:15,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:24:15,476 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 4 states. [2019-12-07 18:24:15,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:15,499 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2019-12-07 18:24:15,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:24:15,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 18:24:15,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:15,501 INFO L225 Difference]: With dead ends: 63 [2019-12-07 18:24:15,501 INFO L226 Difference]: Without dead ends: 61 [2019-12-07 18:24:15,502 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:24:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-12-07 18:24:15,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2019-12-07 18:24:15,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 18:24:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2019-12-07 18:24:15,510 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 14 [2019-12-07 18:24:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:15,510 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2019-12-07 18:24:15,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:24:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2019-12-07 18:24:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 18:24:15,510 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:15,510 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:24:15,511 INFO L410 AbstractCegarLoop]: === Iteration 5 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:15,511 INFO L82 PathProgramCache]: Analyzing trace with hash -317884395, now seen corresponding path program 1 times [2019-12-07 18:24:15,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:15,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310328069] [2019-12-07 18:24:15,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 18:24:15,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310328069] [2019-12-07 18:24:15,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:24:15,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:24:15,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546479556] [2019-12-07 18:24:15,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:24:15,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:15,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:24:15,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:24:15,534 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 4 states. [2019-12-07 18:24:15,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:15,553 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2019-12-07 18:24:15,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:24:15,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-07 18:24:15,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:15,554 INFO L225 Difference]: With dead ends: 63 [2019-12-07 18:24:15,554 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 18:24:15,554 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:24:15,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 18:24:15,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-12-07 18:24:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-12-07 18:24:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2019-12-07 18:24:15,560 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 15 [2019-12-07 18:24:15,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:15,560 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2019-12-07 18:24:15,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:24:15,560 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2019-12-07 18:24:15,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 18:24:15,561 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:15,561 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2019-12-07 18:24:15,561 INFO L410 AbstractCegarLoop]: === Iteration 6 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:15,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:15,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1656222120, now seen corresponding path program 2 times [2019-12-07 18:24:15,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:15,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912823717] [2019-12-07 18:24:15,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:15,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912823717] [2019-12-07 18:24:15,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165059114] [2019-12-07 18:24:15,605 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:15,621 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:24:15,621 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:15,621 INFO L264 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:24:15,623 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:15,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:15,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-12-07 18:24:15,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337769573] [2019-12-07 18:24:15,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 18:24:15,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:15,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 18:24:15,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-12-07 18:24:15,629 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states. [2019-12-07 18:24:15,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:15,697 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2019-12-07 18:24:15,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 18:24:15,697 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-12-07 18:24:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:15,698 INFO L225 Difference]: With dead ends: 86 [2019-12-07 18:24:15,698 INFO L226 Difference]: Without dead ends: 85 [2019-12-07 18:24:15,699 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-12-07 18:24:15,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-12-07 18:24:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2019-12-07 18:24:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-12-07 18:24:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2019-12-07 18:24:15,707 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 17 [2019-12-07 18:24:15,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:15,707 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2019-12-07 18:24:15,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 18:24:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2019-12-07 18:24:15,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 18:24:15,708 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:15,708 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1] [2019-12-07 18:24:15,910 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:15,911 INFO L410 AbstractCegarLoop]: === Iteration 7 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:15,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:15,912 INFO L82 PathProgramCache]: Analyzing trace with hash 438260835, now seen corresponding path program 3 times [2019-12-07 18:24:15,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:15,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208095842] [2019-12-07 18:24:15,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:15,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208095842] [2019-12-07 18:24:15,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475636759] [2019-12-07 18:24:15,999 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:16,017 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 18:24:16,017 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:16,018 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 18:24:16,019 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:16,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:16,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-12-07 18:24:16,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833787554] [2019-12-07 18:24:16,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 18:24:16,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:16,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 18:24:16,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-12-07 18:24:16,027 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand 11 states. [2019-12-07 18:24:16,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:16,125 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2019-12-07 18:24:16,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 18:24:16,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2019-12-07 18:24:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:16,126 INFO L225 Difference]: With dead ends: 109 [2019-12-07 18:24:16,126 INFO L226 Difference]: Without dead ends: 108 [2019-12-07 18:24:16,127 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2019-12-07 18:24:16,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-12-07 18:24:16,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2019-12-07 18:24:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-12-07 18:24:16,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2019-12-07 18:24:16,137 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 22 [2019-12-07 18:24:16,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:16,138 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2019-12-07 18:24:16,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 18:24:16,138 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2019-12-07 18:24:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 18:24:16,139 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:16,140 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2019-12-07 18:24:16,340 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:16,341 INFO L410 AbstractCegarLoop]: === Iteration 8 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:16,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:16,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1696558728, now seen corresponding path program 4 times [2019-12-07 18:24:16,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:16,343 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065465641] [2019-12-07 18:24:16,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:16,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065465641] [2019-12-07 18:24:16,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145597996] [2019-12-07 18:24:16,457 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:16,479 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 18:24:16,479 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:16,480 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 18:24:16,481 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:16,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:16,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-12-07 18:24:16,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630007240] [2019-12-07 18:24:16,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 18:24:16,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:16,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 18:24:16,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-12-07 18:24:16,491 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand 13 states. [2019-12-07 18:24:16,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:16,611 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2019-12-07 18:24:16,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-07 18:24:16,611 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2019-12-07 18:24:16,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:16,612 INFO L225 Difference]: With dead ends: 132 [2019-12-07 18:24:16,612 INFO L226 Difference]: Without dead ends: 131 [2019-12-07 18:24:16,613 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2019-12-07 18:24:16,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-12-07 18:24:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2019-12-07 18:24:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-12-07 18:24:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 136 transitions. [2019-12-07 18:24:16,621 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 136 transitions. Word has length 27 [2019-12-07 18:24:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:16,621 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 136 transitions. [2019-12-07 18:24:16,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 18:24:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 136 transitions. [2019-12-07 18:24:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 18:24:16,622 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:16,622 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:24:16,822 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:16,823 INFO L410 AbstractCegarLoop]: === Iteration 9 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:16,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:16,824 INFO L82 PathProgramCache]: Analyzing trace with hash -563967927, now seen corresponding path program 1 times [2019-12-07 18:24:16,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:16,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486141412] [2019-12-07 18:24:16,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 18:24:16,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486141412] [2019-12-07 18:24:16,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2521721] [2019-12-07 18:24:16,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:16,921 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:24:16,922 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 18:24:16,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:16,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-12-07 18:24:16,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073654010] [2019-12-07 18:24:16,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 18:24:16,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:16,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 18:24:16,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:24:16,939 INFO L87 Difference]: Start difference. First operand 111 states and 136 transitions. Second operand 8 states. [2019-12-07 18:24:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:16,968 INFO L93 Difference]: Finished difference Result 153 states and 200 transitions. [2019-12-07 18:24:16,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 18:24:16,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2019-12-07 18:24:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:16,975 INFO L225 Difference]: With dead ends: 153 [2019-12-07 18:24:16,975 INFO L226 Difference]: Without dead ends: 151 [2019-12-07 18:24:16,975 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:24:16,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-12-07 18:24:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2019-12-07 18:24:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-12-07 18:24:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 177 transitions. [2019-12-07 18:24:16,985 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 177 transitions. Word has length 26 [2019-12-07 18:24:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:16,985 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 177 transitions. [2019-12-07 18:24:16,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 18:24:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 177 transitions. [2019-12-07 18:24:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 18:24:16,986 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:16,986 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:24:17,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:17,188 INFO L410 AbstractCegarLoop]: === Iteration 10 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:17,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:17,189 INFO L82 PathProgramCache]: Analyzing trace with hash -303136509, now seen corresponding path program 1 times [2019-12-07 18:24:17,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:17,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710731773] [2019-12-07 18:24:17,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 18:24:17,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710731773] [2019-12-07 18:24:17,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587652227] [2019-12-07 18:24:17,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:17,293 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:24:17,294 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 18:24:17,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 18:24:17,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2019-12-07 18:24:17,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892416432] [2019-12-07 18:24:17,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:24:17,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:17,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:24:17,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:24:17,310 INFO L87 Difference]: Start difference. First operand 145 states and 177 transitions. Second operand 6 states. [2019-12-07 18:24:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:17,331 INFO L93 Difference]: Finished difference Result 145 states and 177 transitions. [2019-12-07 18:24:17,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:24:17,331 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-12-07 18:24:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:17,332 INFO L225 Difference]: With dead ends: 145 [2019-12-07 18:24:17,332 INFO L226 Difference]: Without dead ends: 129 [2019-12-07 18:24:17,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:24:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-12-07 18:24:17,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2019-12-07 18:24:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-12-07 18:24:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2019-12-07 18:24:17,339 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 27 [2019-12-07 18:24:17,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:17,339 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2019-12-07 18:24:17,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:24:17,339 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2019-12-07 18:24:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 18:24:17,340 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:17,340 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1] [2019-12-07 18:24:17,540 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:17,541 INFO L410 AbstractCegarLoop]: === Iteration 11 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:17,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:17,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1757224061, now seen corresponding path program 5 times [2019-12-07 18:24:17,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:17,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881417496] [2019-12-07 18:24:17,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:17,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881417496] [2019-12-07 18:24:17,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858118628] [2019-12-07 18:24:17,722 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:17,740 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-07 18:24:17,740 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:17,741 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 18:24:17,742 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:17,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:17,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-12-07 18:24:17,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306069093] [2019-12-07 18:24:17,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-07 18:24:17,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:17,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 18:24:17,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2019-12-07 18:24:17,749 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand 15 states. [2019-12-07 18:24:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:17,870 INFO L93 Difference]: Finished difference Result 167 states and 173 transitions. [2019-12-07 18:24:17,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-07 18:24:17,870 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2019-12-07 18:24:17,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:17,871 INFO L225 Difference]: With dead ends: 167 [2019-12-07 18:24:17,871 INFO L226 Difference]: Without dead ends: 166 [2019-12-07 18:24:17,872 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2019-12-07 18:24:17,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-12-07 18:24:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2019-12-07 18:24:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-12-07 18:24:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2019-12-07 18:24:17,878 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 32 [2019-12-07 18:24:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:17,878 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2019-12-07 18:24:17,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-07 18:24:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2019-12-07 18:24:17,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-12-07 18:24:17,880 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:17,880 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2019-12-07 18:24:18,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:18,081 INFO L410 AbstractCegarLoop]: === Iteration 12 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:18,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:18,082 INFO L82 PathProgramCache]: Analyzing trace with hash -512208024, now seen corresponding path program 6 times [2019-12-07 18:24:18,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:18,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813902592] [2019-12-07 18:24:18,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:18,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813902592] [2019-12-07 18:24:18,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717193613] [2019-12-07 18:24:18,232 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:18,255 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-12-07 18:24:18,255 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:18,256 INFO L264 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 18:24:18,258 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-07 18:24:18,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:18,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 17 [2019-12-07 18:24:18,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921503213] [2019-12-07 18:24:18,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 18:24:18,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:18,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 18:24:18,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-12-07 18:24:18,300 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand 18 states. [2019-12-07 18:24:18,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:18,332 INFO L93 Difference]: Finished difference Result 154 states and 172 transitions. [2019-12-07 18:24:18,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:24:18,333 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 37 [2019-12-07 18:24:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:18,334 INFO L225 Difference]: With dead ends: 154 [2019-12-07 18:24:18,334 INFO L226 Difference]: Without dead ends: 153 [2019-12-07 18:24:18,334 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2019-12-07 18:24:18,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-12-07 18:24:18,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-12-07 18:24:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-12-07 18:24:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 171 transitions. [2019-12-07 18:24:18,340 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 171 transitions. Word has length 37 [2019-12-07 18:24:18,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:18,340 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 171 transitions. [2019-12-07 18:24:18,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 18:24:18,340 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 171 transitions. [2019-12-07 18:24:18,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-07 18:24:18,341 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:18,341 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-12-07 18:24:18,542 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:18,543 INFO L410 AbstractCegarLoop]: === Iteration 13 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:18,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:18,544 INFO L82 PathProgramCache]: Analyzing trace with hash 867149367, now seen corresponding path program 2 times [2019-12-07 18:24:18,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:18,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593167036] [2019-12-07 18:24:18,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-07 18:24:18,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593167036] [2019-12-07 18:24:18,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89445087] [2019-12-07 18:24:18,632 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:18,650 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:24:18,650 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:18,650 INFO L264 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:24:18,652 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-07 18:24:18,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:18,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-12-07 18:24:18,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258971375] [2019-12-07 18:24:18,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 18:24:18,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:18,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 18:24:18,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:24:18,672 INFO L87 Difference]: Start difference. First operand 153 states and 171 transitions. Second operand 10 states. [2019-12-07 18:24:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:18,699 INFO L93 Difference]: Finished difference Result 207 states and 237 transitions. [2019-12-07 18:24:18,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 18:24:18,699 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-12-07 18:24:18,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:18,700 INFO L225 Difference]: With dead ends: 207 [2019-12-07 18:24:18,700 INFO L226 Difference]: Without dead ends: 185 [2019-12-07 18:24:18,701 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:24:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-12-07 18:24:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 179. [2019-12-07 18:24:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2019-12-07 18:24:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2019-12-07 18:24:18,706 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 38 [2019-12-07 18:24:18,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:18,707 INFO L462 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2019-12-07 18:24:18,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 18:24:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2019-12-07 18:24:18,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 18:24:18,708 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:18,708 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2019-12-07 18:24:18,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:18,909 INFO L410 AbstractCegarLoop]: === Iteration 14 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:18,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:18,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1066180599, now seen corresponding path program 3 times [2019-12-07 18:24:18,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:18,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300789975] [2019-12-07 18:24:18,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-12-07 18:24:19,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300789975] [2019-12-07 18:24:19,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489357750] [2019-12-07 18:24:19,073 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:19,091 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 18:24:19,092 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:19,092 INFO L264 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 18:24:19,093 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-12-07 18:24:19,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:19,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-12-07 18:24:19,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410781938] [2019-12-07 18:24:19,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 18:24:19,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:19,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 18:24:19,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:24:19,129 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand 12 states. [2019-12-07 18:24:19,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:19,157 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2019-12-07 18:24:19,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 18:24:19,158 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-12-07 18:24:19,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:19,159 INFO L225 Difference]: With dead ends: 233 [2019-12-07 18:24:19,159 INFO L226 Difference]: Without dead ends: 204 [2019-12-07 18:24:19,160 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:24:19,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-12-07 18:24:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2019-12-07 18:24:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-12-07 18:24:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 216 transitions. [2019-12-07 18:24:19,168 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 216 transitions. Word has length 50 [2019-12-07 18:24:19,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:19,168 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 216 transitions. [2019-12-07 18:24:19,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 18:24:19,169 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 216 transitions. [2019-12-07 18:24:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-12-07 18:24:19,170 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:19,170 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2019-12-07 18:24:19,370 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:19,371 INFO L410 AbstractCegarLoop]: === Iteration 15 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:19,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:19,372 INFO L82 PathProgramCache]: Analyzing trace with hash -158018185, now seen corresponding path program 4 times [2019-12-07 18:24:19,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:19,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056953532] [2019-12-07 18:24:19,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-12-07 18:24:19,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056953532] [2019-12-07 18:24:19,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108870445] [2019-12-07 18:24:19,511 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:19,536 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 18:24:19,537 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:19,537 INFO L264 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 18:24:19,539 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-12-07 18:24:19,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:19,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-12-07 18:24:19,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783066723] [2019-12-07 18:24:19,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 18:24:19,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:19,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 18:24:19,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-12-07 18:24:19,586 INFO L87 Difference]: Start difference. First operand 198 states and 216 transitions. Second operand 14 states. [2019-12-07 18:24:19,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:19,628 INFO L93 Difference]: Finished difference Result 252 states and 282 transitions. [2019-12-07 18:24:19,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 18:24:19,628 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2019-12-07 18:24:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:19,629 INFO L225 Difference]: With dead ends: 252 [2019-12-07 18:24:19,629 INFO L226 Difference]: Without dead ends: 216 [2019-12-07 18:24:19,630 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-12-07 18:24:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2019-12-07 18:24:19,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2019-12-07 18:24:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-12-07 18:24:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 228 transitions. [2019-12-07 18:24:19,637 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 228 transitions. Word has length 62 [2019-12-07 18:24:19,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:19,637 INFO L462 AbstractCegarLoop]: Abstraction has 210 states and 228 transitions. [2019-12-07 18:24:19,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 18:24:19,637 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 228 transitions. [2019-12-07 18:24:19,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-12-07 18:24:19,638 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:19,638 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2019-12-07 18:24:19,838 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:19,838 INFO L410 AbstractCegarLoop]: === Iteration 16 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:19,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1955313719, now seen corresponding path program 5 times [2019-12-07 18:24:19,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:19,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642493279] [2019-12-07 18:24:19,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-12-07 18:24:19,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642493279] [2019-12-07 18:24:19,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368883156] [2019-12-07 18:24:19,968 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:19,993 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-12-07 18:24:19,993 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:19,994 INFO L264 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 18:24:19,996 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-12-07 18:24:20,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:20,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-12-07 18:24:20,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825346181] [2019-12-07 18:24:20,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 18:24:20,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:20,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 18:24:20,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-12-07 18:24:20,045 INFO L87 Difference]: Start difference. First operand 210 states and 228 transitions. Second operand 16 states. [2019-12-07 18:24:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:20,086 INFO L93 Difference]: Finished difference Result 264 states and 294 transitions. [2019-12-07 18:24:20,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 18:24:20,086 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2019-12-07 18:24:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:20,088 INFO L225 Difference]: With dead ends: 264 [2019-12-07 18:24:20,088 INFO L226 Difference]: Without dead ends: 223 [2019-12-07 18:24:20,088 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-12-07 18:24:20,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2019-12-07 18:24:20,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2019-12-07 18:24:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2019-12-07 18:24:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 235 transitions. [2019-12-07 18:24:20,097 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 235 transitions. Word has length 74 [2019-12-07 18:24:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:20,098 INFO L462 AbstractCegarLoop]: Abstraction has 217 states and 235 transitions. [2019-12-07 18:24:20,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 18:24:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 235 transitions. [2019-12-07 18:24:20,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-12-07 18:24:20,099 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:20,099 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2019-12-07 18:24:20,300 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:20,301 INFO L410 AbstractCegarLoop]: === Iteration 17 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:20,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:20,301 INFO L82 PathProgramCache]: Analyzing trace with hash -330632009, now seen corresponding path program 6 times [2019-12-07 18:24:20,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:20,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193956137] [2019-12-07 18:24:20,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-12-07 18:24:20,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193956137] [2019-12-07 18:24:20,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086676866] [2019-12-07 18:24:20,520 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:20,546 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-12-07 18:24:20,546 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:20,546 INFO L264 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 18:24:20,548 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-12-07 18:24:20,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:20,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-12-07 18:24:20,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766485245] [2019-12-07 18:24:20,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 18:24:20,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:20,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 18:24:20,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-12-07 18:24:20,607 INFO L87 Difference]: Start difference. First operand 217 states and 235 transitions. Second operand 18 states. [2019-12-07 18:24:20,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:20,652 INFO L93 Difference]: Finished difference Result 271 states and 301 transitions. [2019-12-07 18:24:20,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 18:24:20,652 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 86 [2019-12-07 18:24:20,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:20,653 INFO L225 Difference]: With dead ends: 271 [2019-12-07 18:24:20,653 INFO L226 Difference]: Without dead ends: 230 [2019-12-07 18:24:20,653 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 92 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-12-07 18:24:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2019-12-07 18:24:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2019-12-07 18:24:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-12-07 18:24:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 242 transitions. [2019-12-07 18:24:20,660 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 242 transitions. Word has length 86 [2019-12-07 18:24:20,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:20,660 INFO L462 AbstractCegarLoop]: Abstraction has 224 states and 242 transitions. [2019-12-07 18:24:20,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 18:24:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 242 transitions. [2019-12-07 18:24:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-12-07 18:24:20,661 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:20,661 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2019-12-07 18:24:20,861 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:20,861 INFO L410 AbstractCegarLoop]: === Iteration 18 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:20,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:20,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1775681655, now seen corresponding path program 7 times [2019-12-07 18:24:20,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:20,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462191057] [2019-12-07 18:24:20,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-12-07 18:24:21,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462191057] [2019-12-07 18:24:21,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621843709] [2019-12-07 18:24:21,056 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,082 INFO L264 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 18:24:21,083 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-12-07 18:24:21,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:21,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-12-07 18:24:21,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606063380] [2019-12-07 18:24:21,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-12-07 18:24:21,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:21,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-12-07 18:24:21,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-12-07 18:24:21,163 INFO L87 Difference]: Start difference. First operand 224 states and 242 transitions. Second operand 20 states. [2019-12-07 18:24:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:21,211 INFO L93 Difference]: Finished difference Result 278 states and 308 transitions. [2019-12-07 18:24:21,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-12-07 18:24:21,211 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 98 [2019-12-07 18:24:21,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:21,212 INFO L225 Difference]: With dead ends: 278 [2019-12-07 18:24:21,212 INFO L226 Difference]: Without dead ends: 237 [2019-12-07 18:24:21,213 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 105 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-12-07 18:24:21,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2019-12-07 18:24:21,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2019-12-07 18:24:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2019-12-07 18:24:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 249 transitions. [2019-12-07 18:24:21,219 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 249 transitions. Word has length 98 [2019-12-07 18:24:21,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:21,219 INFO L462 AbstractCegarLoop]: Abstraction has 231 states and 249 transitions. [2019-12-07 18:24:21,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-12-07 18:24:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 249 transitions. [2019-12-07 18:24:21,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-12-07 18:24:21,220 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:21,220 INFO L410 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2019-12-07 18:24:21,421 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:21,421 INFO L410 AbstractCegarLoop]: === Iteration 19 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:21,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:21,421 INFO L82 PathProgramCache]: Analyzing trace with hash 73375164, now seen corresponding path program 8 times [2019-12-07 18:24:21,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:21,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809867052] [2019-12-07 18:24:21,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2019-12-07 18:24:21,651 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809867052] [2019-12-07 18:24:21,651 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195942124] [2019-12-07 18:24:21,652 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:21,687 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:24:21,687 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:21,688 INFO L264 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 18:24:21,690 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2019-12-07 18:24:21,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:21,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-12-07 18:24:21,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976299507] [2019-12-07 18:24:21,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 18:24:21,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:21,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 18:24:21,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-12-07 18:24:21,781 INFO L87 Difference]: Start difference. First operand 231 states and 249 transitions. Second operand 22 states. [2019-12-07 18:24:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:21,838 INFO L93 Difference]: Finished difference Result 285 states and 315 transitions. [2019-12-07 18:24:21,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-12-07 18:24:21,839 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 145 [2019-12-07 18:24:21,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:21,840 INFO L225 Difference]: With dead ends: 285 [2019-12-07 18:24:21,840 INFO L226 Difference]: Without dead ends: 244 [2019-12-07 18:24:21,841 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 153 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-12-07 18:24:21,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-12-07 18:24:21,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 238. [2019-12-07 18:24:21,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-12-07 18:24:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 256 transitions. [2019-12-07 18:24:21,849 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 256 transitions. Word has length 145 [2019-12-07 18:24:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:21,850 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 256 transitions. [2019-12-07 18:24:21,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 18:24:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 256 transitions. [2019-12-07 18:24:21,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-12-07 18:24:21,857 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:21,857 INFO L410 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2019-12-07 18:24:22,057 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:22,057 INFO L410 AbstractCegarLoop]: === Iteration 20 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:22,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash -329358962, now seen corresponding path program 9 times [2019-12-07 18:24:22,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:22,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720770379] [2019-12-07 18:24:22,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2019-12-07 18:24:22,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720770379] [2019-12-07 18:24:22,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966088146] [2019-12-07 18:24:22,341 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:22,372 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-12-07 18:24:22,372 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:22,373 INFO L264 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-07 18:24:22,375 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2019-12-07 18:24:22,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:22,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-12-07 18:24:22,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874666406] [2019-12-07 18:24:22,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-07 18:24:22,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:22,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-07 18:24:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-12-07 18:24:22,481 INFO L87 Difference]: Start difference. First operand 238 states and 256 transitions. Second operand 24 states. [2019-12-07 18:24:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:22,539 INFO L93 Difference]: Finished difference Result 292 states and 322 transitions. [2019-12-07 18:24:22,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-12-07 18:24:22,539 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 157 [2019-12-07 18:24:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:22,540 INFO L225 Difference]: With dead ends: 292 [2019-12-07 18:24:22,540 INFO L226 Difference]: Without dead ends: 251 [2019-12-07 18:24:22,541 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 166 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-12-07 18:24:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2019-12-07 18:24:22,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 245. [2019-12-07 18:24:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-12-07 18:24:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 263 transitions. [2019-12-07 18:24:22,547 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 263 transitions. Word has length 157 [2019-12-07 18:24:22,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:22,548 INFO L462 AbstractCegarLoop]: Abstraction has 245 states and 263 transitions. [2019-12-07 18:24:22,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-07 18:24:22,548 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 263 transitions. [2019-12-07 18:24:22,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-12-07 18:24:22,549 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:22,549 INFO L410 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2019-12-07 18:24:22,749 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:22,750 INFO L410 AbstractCegarLoop]: === Iteration 21 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:22,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:22,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1310449148, now seen corresponding path program 10 times [2019-12-07 18:24:22,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:22,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34986698] [2019-12-07 18:24:22,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2019-12-07 18:24:23,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34986698] [2019-12-07 18:24:23,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584388600] [2019-12-07 18:24:23,215 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:23,247 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 18:24:23,247 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:23,248 INFO L264 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 23 conjunts are in the unsatisfiable core [2019-12-07 18:24:23,250 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2019-12-07 18:24:23,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:23,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-12-07 18:24:23,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494337106] [2019-12-07 18:24:23,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-12-07 18:24:23,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:23,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-12-07 18:24:23,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-12-07 18:24:23,377 INFO L87 Difference]: Start difference. First operand 245 states and 263 transitions. Second operand 26 states. [2019-12-07 18:24:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:23,438 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2019-12-07 18:24:23,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-12-07 18:24:23,438 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 169 [2019-12-07 18:24:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:23,440 INFO L225 Difference]: With dead ends: 299 [2019-12-07 18:24:23,440 INFO L226 Difference]: Without dead ends: 258 [2019-12-07 18:24:23,440 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 179 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-12-07 18:24:23,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2019-12-07 18:24:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 252. [2019-12-07 18:24:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2019-12-07 18:24:23,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 270 transitions. [2019-12-07 18:24:23,446 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 270 transitions. Word has length 169 [2019-12-07 18:24:23,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:23,446 INFO L462 AbstractCegarLoop]: Abstraction has 252 states and 270 transitions. [2019-12-07 18:24:23,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-12-07 18:24:23,446 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 270 transitions. [2019-12-07 18:24:23,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-12-07 18:24:23,448 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:23,448 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1] [2019-12-07 18:24:23,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:23,648 INFO L410 AbstractCegarLoop]: === Iteration 22 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:23,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:23,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1656708873, now seen corresponding path program 11 times [2019-12-07 18:24:23,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:23,649 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497560848] [2019-12-07 18:24:23,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2019-12-07 18:24:24,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497560848] [2019-12-07 18:24:24,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991593955] [2019-12-07 18:24:24,026 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:24,069 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-12-07 18:24:24,069 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:24,070 INFO L264 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-07 18:24:24,072 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2019-12-07 18:24:24,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:24,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-12-07 18:24:24,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133541546] [2019-12-07 18:24:24,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-07 18:24:24,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:24,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-07 18:24:24,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2019-12-07 18:24:24,205 INFO L87 Difference]: Start difference. First operand 252 states and 270 transitions. Second operand 28 states. [2019-12-07 18:24:24,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:24,270 INFO L93 Difference]: Finished difference Result 306 states and 336 transitions. [2019-12-07 18:24:24,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-07 18:24:24,271 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 146 [2019-12-07 18:24:24,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:24,272 INFO L225 Difference]: With dead ends: 306 [2019-12-07 18:24:24,272 INFO L226 Difference]: Without dead ends: 265 [2019-12-07 18:24:24,272 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 157 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2019-12-07 18:24:24,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-12-07 18:24:24,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2019-12-07 18:24:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-12-07 18:24:24,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 277 transitions. [2019-12-07 18:24:24,278 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 277 transitions. Word has length 146 [2019-12-07 18:24:24,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:24,278 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 277 transitions. [2019-12-07 18:24:24,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-07 18:24:24,278 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 277 transitions. [2019-12-07 18:24:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-12-07 18:24:24,279 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:24,279 INFO L410 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2019-12-07 18:24:24,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:24,480 INFO L410 AbstractCegarLoop]: === Iteration 23 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:24,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:24,481 INFO L82 PathProgramCache]: Analyzing trace with hash -2039869892, now seen corresponding path program 12 times [2019-12-07 18:24:24,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:24,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321969164] [2019-12-07 18:24:24,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-12-07 18:24:24,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321969164] [2019-12-07 18:24:24,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664007975] [2019-12-07 18:24:24,924 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:24,970 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2019-12-07 18:24:24,971 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:24,972 INFO L264 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 27 conjunts are in the unsatisfiable core [2019-12-07 18:24:24,973 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-12-07 18:24:25,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:25,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-12-07 18:24:25,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130910378] [2019-12-07 18:24:25,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-12-07 18:24:25,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:25,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-12-07 18:24:25,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2019-12-07 18:24:25,134 INFO L87 Difference]: Start difference. First operand 259 states and 277 transitions. Second operand 30 states. [2019-12-07 18:24:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:25,204 INFO L93 Difference]: Finished difference Result 313 states and 343 transitions. [2019-12-07 18:24:25,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-12-07 18:24:25,204 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 193 [2019-12-07 18:24:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:25,206 INFO L225 Difference]: With dead ends: 313 [2019-12-07 18:24:25,206 INFO L226 Difference]: Without dead ends: 272 [2019-12-07 18:24:25,206 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 205 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2019-12-07 18:24:25,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-12-07 18:24:25,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 266. [2019-12-07 18:24:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2019-12-07 18:24:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 284 transitions. [2019-12-07 18:24:25,212 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 284 transitions. Word has length 193 [2019-12-07 18:24:25,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:25,212 INFO L462 AbstractCegarLoop]: Abstraction has 266 states and 284 transitions. [2019-12-07 18:24:25,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-12-07 18:24:25,212 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 284 transitions. [2019-12-07 18:24:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-12-07 18:24:25,214 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:25,214 INFO L410 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1] [2019-12-07 18:24:25,414 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:25,415 INFO L410 AbstractCegarLoop]: === Iteration 24 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:25,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:25,415 INFO L82 PathProgramCache]: Analyzing trace with hash 350954254, now seen corresponding path program 13 times [2019-12-07 18:24:25,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:25,416 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658887304] [2019-12-07 18:24:25,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2019-12-07 18:24:25,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658887304] [2019-12-07 18:24:25,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281023744] [2019-12-07 18:24:25,888 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:25,924 INFO L264 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-07 18:24:25,926 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2019-12-07 18:24:26,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:26,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-12-07 18:24:26,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202985733] [2019-12-07 18:24:26,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-12-07 18:24:26,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:26,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-12-07 18:24:26,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2019-12-07 18:24:26,110 INFO L87 Difference]: Start difference. First operand 266 states and 284 transitions. Second operand 32 states. [2019-12-07 18:24:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:26,185 INFO L93 Difference]: Finished difference Result 320 states and 350 transitions. [2019-12-07 18:24:26,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-12-07 18:24:26,185 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 205 [2019-12-07 18:24:26,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:26,186 INFO L225 Difference]: With dead ends: 320 [2019-12-07 18:24:26,187 INFO L226 Difference]: Without dead ends: 279 [2019-12-07 18:24:26,187 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 218 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2019-12-07 18:24:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2019-12-07 18:24:26,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 273. [2019-12-07 18:24:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2019-12-07 18:24:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 291 transitions. [2019-12-07 18:24:26,192 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 291 transitions. Word has length 205 [2019-12-07 18:24:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:26,193 INFO L462 AbstractCegarLoop]: Abstraction has 273 states and 291 transitions. [2019-12-07 18:24:26,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-12-07 18:24:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 291 transitions. [2019-12-07 18:24:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-12-07 18:24:26,194 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:26,194 INFO L410 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1] [2019-12-07 18:24:26,394 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:26,394 INFO L410 AbstractCegarLoop]: === Iteration 25 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:26,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1929171383, now seen corresponding path program 14 times [2019-12-07 18:24:26,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:26,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959999102] [2019-12-07 18:24:26,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2019-12-07 18:24:26,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959999102] [2019-12-07 18:24:26,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047661107] [2019-12-07 18:24:26,907 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:26,943 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:24:26,943 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:26,944 INFO L264 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 31 conjunts are in the unsatisfiable core [2019-12-07 18:24:26,946 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2019-12-07 18:24:27,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:27,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-12-07 18:24:27,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833521538] [2019-12-07 18:24:27,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-12-07 18:24:27,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:27,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-12-07 18:24:27,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2019-12-07 18:24:27,147 INFO L87 Difference]: Start difference. First operand 273 states and 291 transitions. Second operand 34 states. [2019-12-07 18:24:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:27,231 INFO L93 Difference]: Finished difference Result 327 states and 357 transitions. [2019-12-07 18:24:27,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-12-07 18:24:27,232 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 182 [2019-12-07 18:24:27,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:27,233 INFO L225 Difference]: With dead ends: 327 [2019-12-07 18:24:27,233 INFO L226 Difference]: Without dead ends: 286 [2019-12-07 18:24:27,233 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 196 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2019-12-07 18:24:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2019-12-07 18:24:27,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2019-12-07 18:24:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2019-12-07 18:24:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 298 transitions. [2019-12-07 18:24:27,240 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 298 transitions. Word has length 182 [2019-12-07 18:24:27,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:27,241 INFO L462 AbstractCegarLoop]: Abstraction has 280 states and 298 transitions. [2019-12-07 18:24:27,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-12-07 18:24:27,241 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 298 transitions. [2019-12-07 18:24:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-12-07 18:24:27,242 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:27,243 INFO L410 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2019-12-07 18:24:27,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:27,443 INFO L410 AbstractCegarLoop]: === Iteration 26 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:27,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:27,444 INFO L82 PathProgramCache]: Analyzing trace with hash 537467854, now seen corresponding path program 15 times [2019-12-07 18:24:27,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:27,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687275434] [2019-12-07 18:24:27,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2019-12-07 18:24:28,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687275434] [2019-12-07 18:24:28,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995027201] [2019-12-07 18:24:28,087 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:28,133 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-12-07 18:24:28,133 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:28,134 INFO L264 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 33 conjunts are in the unsatisfiable core [2019-12-07 18:24:28,137 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2019-12-07 18:24:28,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:28,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-12-07 18:24:28,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579745255] [2019-12-07 18:24:28,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-07 18:24:28,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:28,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-07 18:24:28,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2019-12-07 18:24:28,360 INFO L87 Difference]: Start difference. First operand 280 states and 298 transitions. Second operand 36 states. [2019-12-07 18:24:28,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:28,454 INFO L93 Difference]: Finished difference Result 334 states and 364 transitions. [2019-12-07 18:24:28,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-12-07 18:24:28,454 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 229 [2019-12-07 18:24:28,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:28,456 INFO L225 Difference]: With dead ends: 334 [2019-12-07 18:24:28,456 INFO L226 Difference]: Without dead ends: 293 [2019-12-07 18:24:28,457 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 244 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2019-12-07 18:24:28,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2019-12-07 18:24:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 287. [2019-12-07 18:24:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2019-12-07 18:24:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 305 transitions. [2019-12-07 18:24:28,463 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 305 transitions. Word has length 229 [2019-12-07 18:24:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:28,464 INFO L462 AbstractCegarLoop]: Abstraction has 287 states and 305 transitions. [2019-12-07 18:24:28,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-07 18:24:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 305 transitions. [2019-12-07 18:24:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-12-07 18:24:28,465 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:28,466 INFO L410 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1] [2019-12-07 18:24:28,666 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:28,666 INFO L410 AbstractCegarLoop]: === Iteration 27 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:28,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:28,667 INFO L82 PathProgramCache]: Analyzing trace with hash 315334903, now seen corresponding path program 16 times [2019-12-07 18:24:28,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:28,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660463646] [2019-12-07 18:24:28,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2019-12-07 18:24:29,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660463646] [2019-12-07 18:24:29,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382752359] [2019-12-07 18:24:29,308 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:29,354 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 18:24:29,354 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:29,355 INFO L264 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 35 conjunts are in the unsatisfiable core [2019-12-07 18:24:29,357 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2019-12-07 18:24:29,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:29,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-12-07 18:24:29,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406722361] [2019-12-07 18:24:29,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-12-07 18:24:29,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:29,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-12-07 18:24:29,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2019-12-07 18:24:29,596 INFO L87 Difference]: Start difference. First operand 287 states and 305 transitions. Second operand 38 states. [2019-12-07 18:24:29,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:29,687 INFO L93 Difference]: Finished difference Result 341 states and 371 transitions. [2019-12-07 18:24:29,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-12-07 18:24:29,687 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 206 [2019-12-07 18:24:29,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:29,688 INFO L225 Difference]: With dead ends: 341 [2019-12-07 18:24:29,688 INFO L226 Difference]: Without dead ends: 300 [2019-12-07 18:24:29,689 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 222 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2019-12-07 18:24:29,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2019-12-07 18:24:29,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 294. [2019-12-07 18:24:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-12-07 18:24:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 312 transitions. [2019-12-07 18:24:29,694 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 312 transitions. Word has length 206 [2019-12-07 18:24:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:29,694 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 312 transitions. [2019-12-07 18:24:29,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-12-07 18:24:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 312 transitions. [2019-12-07 18:24:29,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-12-07 18:24:29,696 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:29,696 INFO L410 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1] [2019-12-07 18:24:29,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:29,896 INFO L410 AbstractCegarLoop]: === Iteration 28 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:29,897 INFO L82 PathProgramCache]: Analyzing trace with hash -843307890, now seen corresponding path program 17 times [2019-12-07 18:24:29,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:29,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947827389] [2019-12-07 18:24:29,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2019-12-07 18:24:30,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947827389] [2019-12-07 18:24:30,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685765120] [2019-12-07 18:24:30,678 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:30,735 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2019-12-07 18:24:30,735 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:30,737 INFO L264 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 37 conjunts are in the unsatisfiable core [2019-12-07 18:24:30,739 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2019-12-07 18:24:31,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:31,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-12-07 18:24:31,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413947041] [2019-12-07 18:24:31,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-12-07 18:24:31,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:31,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-12-07 18:24:31,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2019-12-07 18:24:31,009 INFO L87 Difference]: Start difference. First operand 294 states and 312 transitions. Second operand 40 states. [2019-12-07 18:24:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:31,103 INFO L93 Difference]: Finished difference Result 348 states and 378 transitions. [2019-12-07 18:24:31,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-12-07 18:24:31,104 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 253 [2019-12-07 18:24:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:31,105 INFO L225 Difference]: With dead ends: 348 [2019-12-07 18:24:31,105 INFO L226 Difference]: Without dead ends: 307 [2019-12-07 18:24:31,106 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 270 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2019-12-07 18:24:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2019-12-07 18:24:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2019-12-07 18:24:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-12-07 18:24:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 319 transitions. [2019-12-07 18:24:31,111 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 319 transitions. Word has length 253 [2019-12-07 18:24:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:31,111 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 319 transitions. [2019-12-07 18:24:31,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-12-07 18:24:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 319 transitions. [2019-12-07 18:24:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-12-07 18:24:31,112 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:31,112 INFO L410 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1] [2019-12-07 18:24:31,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:31,313 INFO L410 AbstractCegarLoop]: === Iteration 29 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:31,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:31,314 INFO L82 PathProgramCache]: Analyzing trace with hash 349397047, now seen corresponding path program 18 times [2019-12-07 18:24:31,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:31,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049420090] [2019-12-07 18:24:31,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2019-12-07 18:24:32,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049420090] [2019-12-07 18:24:32,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537460323] [2019-12-07 18:24:32,123 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:32,174 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2019-12-07 18:24:32,174 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:32,175 INFO L264 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 39 conjunts are in the unsatisfiable core [2019-12-07 18:24:32,177 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2019-12-07 18:24:32,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:32,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-12-07 18:24:32,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598984031] [2019-12-07 18:24:32,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-07 18:24:32,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:32,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-07 18:24:32,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2019-12-07 18:24:32,472 INFO L87 Difference]: Start difference. First operand 301 states and 319 transitions. Second operand 42 states. [2019-12-07 18:24:32,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:32,591 INFO L93 Difference]: Finished difference Result 355 states and 385 transitions. [2019-12-07 18:24:32,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-12-07 18:24:32,591 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 230 [2019-12-07 18:24:32,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:32,592 INFO L225 Difference]: With dead ends: 355 [2019-12-07 18:24:32,592 INFO L226 Difference]: Without dead ends: 314 [2019-12-07 18:24:32,593 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 248 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2019-12-07 18:24:32,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2019-12-07 18:24:32,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 308. [2019-12-07 18:24:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2019-12-07 18:24:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 326 transitions. [2019-12-07 18:24:32,598 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 326 transitions. Word has length 230 [2019-12-07 18:24:32,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:32,598 INFO L462 AbstractCegarLoop]: Abstraction has 308 states and 326 transitions. [2019-12-07 18:24:32,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-12-07 18:24:32,599 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 326 transitions. [2019-12-07 18:24:32,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-12-07 18:24:32,600 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:32,600 INFO L410 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1] [2019-12-07 18:24:32,800 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:32,800 INFO L410 AbstractCegarLoop]: === Iteration 30 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:32,801 INFO L82 PathProgramCache]: Analyzing trace with hash 420240905, now seen corresponding path program 19 times [2019-12-07 18:24:32,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:32,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431654747] [2019-12-07 18:24:32,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-12-07 18:24:33,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431654747] [2019-12-07 18:24:33,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075069455] [2019-12-07 18:24:33,708 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:33,746 INFO L264 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 41 conjunts are in the unsatisfiable core [2019-12-07 18:24:33,749 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-12-07 18:24:34,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:34,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2019-12-07 18:24:34,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558219824] [2019-12-07 18:24:34,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-12-07 18:24:34,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:34,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-12-07 18:24:34,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2019-12-07 18:24:34,064 INFO L87 Difference]: Start difference. First operand 308 states and 326 transitions. Second operand 44 states. [2019-12-07 18:24:34,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:34,181 INFO L93 Difference]: Finished difference Result 362 states and 392 transitions. [2019-12-07 18:24:34,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-12-07 18:24:34,182 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 242 [2019-12-07 18:24:34,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:34,183 INFO L225 Difference]: With dead ends: 362 [2019-12-07 18:24:34,183 INFO L226 Difference]: Without dead ends: 321 [2019-12-07 18:24:34,184 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 261 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2019-12-07 18:24:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2019-12-07 18:24:34,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 315. [2019-12-07 18:24:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-12-07 18:24:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 333 transitions. [2019-12-07 18:24:34,189 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 333 transitions. Word has length 242 [2019-12-07 18:24:34,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:34,189 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 333 transitions. [2019-12-07 18:24:34,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-12-07 18:24:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 333 transitions. [2019-12-07 18:24:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-12-07 18:24:34,191 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:34,191 INFO L410 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1] [2019-12-07 18:24:34,391 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:34,392 INFO L410 AbstractCegarLoop]: === Iteration 31 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:34,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:34,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2063192260, now seen corresponding path program 20 times [2019-12-07 18:24:34,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:34,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253420120] [2019-12-07 18:24:34,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2019-12-07 18:24:35,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253420120] [2019-12-07 18:24:35,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596355580] [2019-12-07 18:24:35,401 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:35,446 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:24:35,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:35,447 INFO L264 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 43 conjunts are in the unsatisfiable core [2019-12-07 18:24:35,450 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2019-12-07 18:24:35,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:35,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-12-07 18:24:35,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277923748] [2019-12-07 18:24:35,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-12-07 18:24:35,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:35,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-12-07 18:24:35,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-12-07 18:24:35,794 INFO L87 Difference]: Start difference. First operand 315 states and 333 transitions. Second operand 46 states. [2019-12-07 18:24:35,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:35,892 INFO L93 Difference]: Finished difference Result 369 states and 399 transitions. [2019-12-07 18:24:35,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-12-07 18:24:35,893 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 289 [2019-12-07 18:24:35,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:35,894 INFO L225 Difference]: With dead ends: 369 [2019-12-07 18:24:35,894 INFO L226 Difference]: Without dead ends: 328 [2019-12-07 18:24:35,895 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 309 SyntacticMatches, 20 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-12-07 18:24:35,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-12-07 18:24:35,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 322. [2019-12-07 18:24:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2019-12-07 18:24:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 340 transitions. [2019-12-07 18:24:35,900 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 340 transitions. Word has length 289 [2019-12-07 18:24:35,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:35,900 INFO L462 AbstractCegarLoop]: Abstraction has 322 states and 340 transitions. [2019-12-07 18:24:35,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-12-07 18:24:35,900 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 340 transitions. [2019-12-07 18:24:35,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2019-12-07 18:24:35,902 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:35,902 INFO L410 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1] [2019-12-07 18:24:36,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:36,105 INFO L410 AbstractCegarLoop]: === Iteration 32 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:36,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:36,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1626433038, now seen corresponding path program 21 times [2019-12-07 18:24:36,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:36,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322988018] [2019-12-07 18:24:36,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2019-12-07 18:24:37,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322988018] [2019-12-07 18:24:37,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127377837] [2019-12-07 18:24:37,239 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:37,295 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-12-07 18:24:37,295 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:37,297 INFO L264 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 45 conjunts are in the unsatisfiable core [2019-12-07 18:24:37,299 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2019-12-07 18:24:37,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:37,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-12-07 18:24:37,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195321028] [2019-12-07 18:24:37,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-12-07 18:24:37,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:37,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-12-07 18:24:37,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 18:24:37,667 INFO L87 Difference]: Start difference. First operand 322 states and 340 transitions. Second operand 48 states. [2019-12-07 18:24:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:37,784 INFO L93 Difference]: Finished difference Result 376 states and 406 transitions. [2019-12-07 18:24:37,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-12-07 18:24:37,784 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 301 [2019-12-07 18:24:37,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:37,786 INFO L225 Difference]: With dead ends: 376 [2019-12-07 18:24:37,786 INFO L226 Difference]: Without dead ends: 335 [2019-12-07 18:24:37,787 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 322 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 18:24:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2019-12-07 18:24:37,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 329. [2019-12-07 18:24:37,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2019-12-07 18:24:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 347 transitions. [2019-12-07 18:24:37,791 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 347 transitions. Word has length 301 [2019-12-07 18:24:37,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:37,792 INFO L462 AbstractCegarLoop]: Abstraction has 329 states and 347 transitions. [2019-12-07 18:24:37,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-12-07 18:24:37,792 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 347 transitions. [2019-12-07 18:24:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2019-12-07 18:24:37,793 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:37,793 INFO L410 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2019-12-07 18:24:37,994 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:37,994 INFO L410 AbstractCegarLoop]: === Iteration 33 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:37,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:37,994 INFO L82 PathProgramCache]: Analyzing trace with hash 338825084, now seen corresponding path program 22 times [2019-12-07 18:24:37,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:37,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209023364] [2019-12-07 18:24:37,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2019-12-07 18:24:39,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209023364] [2019-12-07 18:24:39,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229082829] [2019-12-07 18:24:39,267 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:39,315 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 18:24:39,315 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:39,316 INFO L264 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 47 conjunts are in the unsatisfiable core [2019-12-07 18:24:39,319 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:39,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2019-12-07 18:24:39,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:39,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2019-12-07 18:24:39,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660027430] [2019-12-07 18:24:39,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-12-07 18:24:39,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:39,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-12-07 18:24:39,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2019-12-07 18:24:39,772 INFO L87 Difference]: Start difference. First operand 329 states and 347 transitions. Second operand 50 states. [2019-12-07 18:24:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:39,884 INFO L93 Difference]: Finished difference Result 383 states and 413 transitions. [2019-12-07 18:24:39,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-12-07 18:24:39,885 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 313 [2019-12-07 18:24:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:39,886 INFO L225 Difference]: With dead ends: 383 [2019-12-07 18:24:39,886 INFO L226 Difference]: Without dead ends: 342 [2019-12-07 18:24:39,887 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 335 SyntacticMatches, 22 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2019-12-07 18:24:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2019-12-07 18:24:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2019-12-07 18:24:39,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-12-07 18:24:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 354 transitions. [2019-12-07 18:24:39,893 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 354 transitions. Word has length 313 [2019-12-07 18:24:39,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:39,893 INFO L462 AbstractCegarLoop]: Abstraction has 336 states and 354 transitions. [2019-12-07 18:24:39,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-12-07 18:24:39,893 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 354 transitions. [2019-12-07 18:24:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-12-07 18:24:39,895 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:39,895 INFO L410 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1] [2019-12-07 18:24:40,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:40,096 INFO L410 AbstractCegarLoop]: === Iteration 34 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:40,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:40,096 INFO L82 PathProgramCache]: Analyzing trace with hash 117652873, now seen corresponding path program 23 times [2019-12-07 18:24:40,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:40,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175486163] [2019-12-07 18:24:40,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-12-07 18:24:41,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175486163] [2019-12-07 18:24:41,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264908496] [2019-12-07 18:24:41,436 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:41,497 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2019-12-07 18:24:41,497 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:41,499 INFO L264 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 49 conjunts are in the unsatisfiable core [2019-12-07 18:24:41,501 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-12-07 18:24:41,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:24:41,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2019-12-07 18:24:41,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539433127] [2019-12-07 18:24:41,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-12-07 18:24:41,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:41,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-12-07 18:24:41,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2019-12-07 18:24:41,928 INFO L87 Difference]: Start difference. First operand 336 states and 354 transitions. Second operand 52 states. [2019-12-07 18:24:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:42,045 INFO L93 Difference]: Finished difference Result 390 states and 420 transitions. [2019-12-07 18:24:42,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-12-07 18:24:42,045 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 290 [2019-12-07 18:24:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:24:42,047 INFO L225 Difference]: With dead ends: 390 [2019-12-07 18:24:42,047 INFO L226 Difference]: Without dead ends: 349 [2019-12-07 18:24:42,048 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 313 SyntacticMatches, 23 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2019-12-07 18:24:42,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2019-12-07 18:24:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 343. [2019-12-07 18:24:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-12-07 18:24:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 361 transitions. [2019-12-07 18:24:42,053 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 361 transitions. Word has length 290 [2019-12-07 18:24:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:24:42,053 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 361 transitions. [2019-12-07 18:24:42,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-12-07 18:24:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 361 transitions. [2019-12-07 18:24:42,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2019-12-07 18:24:42,055 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:24:42,055 INFO L410 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1] [2019-12-07 18:24:42,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:42,256 INFO L410 AbstractCegarLoop]: === Iteration 35 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 18:24:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:42,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1252532292, now seen corresponding path program 24 times [2019-12-07 18:24:42,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:42,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827318537] [2019-12-07 18:24:42,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:43,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4572 backedges. 2072 proven. 1072 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-12-07 18:24:43,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827318537] [2019-12-07 18:24:43,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836886850] [2019-12-07 18:24:43,985 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c12cd133-7a57-489d-a954-b761835088dc/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:24:44,065 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2019-12-07 18:24:44,065 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:24:44,067 INFO L264 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 51 conjunts are in the unsatisfiable core [2019-12-07 18:24:44,070 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:25:39,318 WARN L192 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 27 [2019-12-07 18:25:41,348 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-12-07 18:25:43,395 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-12-07 18:25:45,500 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-12-07 18:25:47,604 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-12-07 18:25:49,698 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-12-07 18:25:52,059 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-12-07 18:25:55,283 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-12-07 18:25:57,538 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_310|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-12-07 18:25:59,886 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_310|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-12-07 18:26:18,949 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-12-07 18:26:18,950 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2019-12-07 18:26:18,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 18:26:18,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2019-12-07 18:26:18,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718992981] [2019-12-07 18:26:18,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-12-07 18:26:18,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:26:18,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-12-07 18:26:18,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=2596, Unknown=28, NotChecked=1044, Total=4160 [2019-12-07 18:26:18,953 INFO L87 Difference]: Start difference. First operand 343 states and 361 transitions. Second operand 46 states. [2019-12-07 18:26:18,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:26:19,153 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:19,155 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@218cd1f2 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.lock(ManagedScript.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:354) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:127) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:60) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:62) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 18:26:19,163 INFO L168 Benchmark]: Toolchain (without parser) took 124847.54 ms. Allocated memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: 1.0 GB). Free memory was 942.5 MB in the beginning and 1.5 GB in the end (delta: -515.2 MB). Peak memory consumption was 509.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:26:19,163 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:26:19,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:26:19,163 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:26:19,164 INFO L168 Benchmark]: Boogie Preprocessor took 10.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:26:19,164 INFO L168 Benchmark]: RCFGBuilder took 146.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:26:19,164 INFO L168 Benchmark]: TraceAbstraction took 124485.42 ms. Allocated memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: 923.3 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -379.4 MB). Peak memory consumption was 543.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:26:19,166 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 180.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 146.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 124485.42 ms. Allocated memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: 923.3 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -379.4 MB). Peak memory consumption was 543.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@218cd1f2 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@218cd1f2: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.lock(ManagedScript.java:83) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...