./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 22:58:57,968 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 22:58:57,969 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 22:58:57,976 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 22:58:57,976 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 22:58:57,977 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 22:58:57,977 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 22:58:57,978 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 22:58:57,979 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 22:58:57,979 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 22:58:57,980 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 22:58:57,980 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 22:58:57,980 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 22:58:57,981 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 22:58:57,982 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 22:58:57,982 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 22:58:57,982 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 22:58:57,983 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 22:58:57,984 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 22:58:57,985 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 22:58:57,985 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 22:58:57,986 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 22:58:57,987 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 22:58:57,987 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 22:58:57,987 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 22:58:57,988 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 22:58:57,988 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 22:58:57,989 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 22:58:57,989 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 22:58:57,990 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 22:58:57,990 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 22:58:57,990 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 22:58:57,990 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 22:58:57,991 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 22:58:57,991 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 22:58:57,991 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 22:58:57,992 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-12-02 22:58:57,999 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 22:58:57,999 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 22:58:57,999 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 22:58:57,999 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 22:58:58,000 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 22:58:58,000 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 22:58:58,000 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 22:58:58,000 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 22:58:58,000 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 22:58:58,000 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 22:58:58,000 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 22:58:58,000 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 22:58:58,001 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 22:58:58,001 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 22:58:58,001 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 22:58:58,001 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 22:58:58,001 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-02 22:58:58,001 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 22:58:58,001 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 22:58:58,001 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 22:58:58,001 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 22:58:58,001 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 22:58:58,001 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 22:58:58,002 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 22:58:58,002 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 22:58:58,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 22:58:58,002 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 22:58:58,002 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 22:58:58,002 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 22:58:58,002 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 22:58:58,002 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 22:58:58,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 22:58:58,002 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 [2018-12-02 22:58:58,021 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 22:58:58,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 22:58:58,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 22:58:58,033 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 22:58:58,034 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 22:58:58,034 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-12-02 22:58:58,080 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/data/22380ed90/b7b2523540414514b3be90c6b8885f07/FLAGaf5ba01a9 [2018-12-02 22:58:58,515 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 22:58:58,516 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-12-02 22:58:58,519 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/data/22380ed90/b7b2523540414514b3be90c6b8885f07/FLAGaf5ba01a9 [2018-12-02 22:58:58,528 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/data/22380ed90/b7b2523540414514b3be90c6b8885f07 [2018-12-02 22:58:58,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 22:58:58,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 22:58:58,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 22:58:58,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 22:58:58,533 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 22:58:58,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:58:58" (1/1) ... [2018-12-02 22:58:58,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec9f2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58, skipping insertion in model container [2018-12-02 22:58:58,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:58:58" (1/1) ... [2018-12-02 22:58:58,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 22:58:58,548 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 22:58:58,628 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 22:58:58,630 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 22:58:58,639 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 22:58:58,646 INFO L195 MainTranslator]: Completed translation [2018-12-02 22:58:58,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58 WrapperNode [2018-12-02 22:58:58,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 22:58:58,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 22:58:58,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 22:58:58,647 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 22:58:58,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58" (1/1) ... [2018-12-02 22:58:58,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58" (1/1) ... [2018-12-02 22:58:58,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 22:58:58,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 22:58:58,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 22:58:58,658 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 22:58:58,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58" (1/1) ... [2018-12-02 22:58:58,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58" (1/1) ... [2018-12-02 22:58:58,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58" (1/1) ... [2018-12-02 22:58:58,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58" (1/1) ... [2018-12-02 22:58:58,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58" (1/1) ... [2018-12-02 22:58:58,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58" (1/1) ... [2018-12-02 22:58:58,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58" (1/1) ... [2018-12-02 22:58:58,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 22:58:58,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 22:58:58,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 22:58:58,668 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 22:58:58,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 22:58:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 22:58:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 22:58:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2018-12-02 22:58:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2018-12-02 22:58:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 22:58:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 22:58:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 22:58:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 22:58:58,824 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 22:58:58,824 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-02 22:58:58,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:58:58 BoogieIcfgContainer [2018-12-02 22:58:58,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 22:58:58,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 22:58:58,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 22:58:58,827 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 22:58:58,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:58:58" (1/3) ... [2018-12-02 22:58:58,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f34bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:58:58, skipping insertion in model container [2018-12-02 22:58:58,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:58:58" (2/3) ... [2018-12-02 22:58:58,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f34bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:58:58, skipping insertion in model container [2018-12-02 22:58:58,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:58:58" (3/3) ... [2018-12-02 22:58:58,829 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-12-02 22:58:58,834 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 22:58:58,838 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-02 22:58:58,847 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-02 22:58:58,864 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 22:58:58,864 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 22:58:58,864 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 22:58:58,864 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 22:58:58,864 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 22:58:58,865 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 22:58:58,865 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 22:58:58,865 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 22:58:58,865 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 22:58:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-02 22:58:58,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 22:58:58,878 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:58:58,879 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:58:58,880 INFO L423 AbstractCegarLoop]: === Iteration 1 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:58:58,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:58:58,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1002909108, now seen corresponding path program 1 times [2018-12-02 22:58:58,884 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:58:58,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:58:58,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:58,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:58:58,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:58:58,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 22:58:58,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 22:58:58,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 22:58:58,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 22:58:58,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 22:58:58,985 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-12-02 22:58:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:58:59,034 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-12-02 22:58:59,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 22:58:59,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-02 22:58:59,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:58:59,040 INFO L225 Difference]: With dead ends: 38 [2018-12-02 22:58:59,040 INFO L226 Difference]: Without dead ends: 24 [2018-12-02 22:58:59,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 22:58:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-02 22:58:59,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-02 22:58:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 22:58:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-12-02 22:58:59,066 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 10 [2018-12-02 22:58:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:58:59,066 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-12-02 22:58:59,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 22:58:59,066 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-12-02 22:58:59,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-02 22:58:59,067 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:58:59,067 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:58:59,067 INFO L423 AbstractCegarLoop]: === Iteration 2 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:58:59,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:58:59,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1025411315, now seen corresponding path program 1 times [2018-12-02 22:58:59,068 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:58:59,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:58:59,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:58:59,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:58:59,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 22:58:59,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 22:58:59,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 22:58:59,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 22:58:59,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 22:58:59,099 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-12-02 22:58:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:58:59,132 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-12-02 22:58:59,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 22:58:59,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-02 22:58:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:58:59,134 INFO L225 Difference]: With dead ends: 43 [2018-12-02 22:58:59,134 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 22:58:59,134 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 22:58:59,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 22:58:59,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2018-12-02 22:58:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 22:58:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-12-02 22:58:59,140 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2018-12-02 22:58:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:58:59,140 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-12-02 22:58:59,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 22:58:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-12-02 22:58:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 22:58:59,141 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:58:59,141 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:58:59,142 INFO L423 AbstractCegarLoop]: === Iteration 3 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:58:59,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:58:59,142 INFO L82 PathProgramCache]: Analyzing trace with hash -80939849, now seen corresponding path program 1 times [2018-12-02 22:58:59,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:58:59,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:58:59,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:58:59,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:58:59,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:58:59,178 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:58:59,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:58:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:59,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:58:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:58:59,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:58:59,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-02 22:58:59,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 22:58:59,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 22:58:59,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-02 22:58:59,227 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2018-12-02 22:58:59,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:58:59,276 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2018-12-02 22:58:59,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 22:58:59,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-12-02 22:58:59,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:58:59,278 INFO L225 Difference]: With dead ends: 59 [2018-12-02 22:58:59,278 INFO L226 Difference]: Without dead ends: 58 [2018-12-02 22:58:59,278 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-12-02 22:58:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-12-02 22:58:59,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2018-12-02 22:58:59,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-02 22:58:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2018-12-02 22:58:59,283 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 16 [2018-12-02 22:58:59,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:58:59,283 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2018-12-02 22:58:59,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 22:58:59,283 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2018-12-02 22:58:59,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-02 22:58:59,284 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:58:59,284 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:58:59,284 INFO L423 AbstractCegarLoop]: === Iteration 4 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:58:59,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:58:59,285 INFO L82 PathProgramCache]: Analyzing trace with hash -474289655, now seen corresponding path program 1 times [2018-12-02 22:58:59,285 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:58:59,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:58:59,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:58:59,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 22:58:59,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 22:58:59,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 22:58:59,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 22:58:59,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 22:58:59,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 22:58:59,305 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 4 states. [2018-12-02 22:58:59,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:58:59,323 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2018-12-02 22:58:59,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 22:58:59,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-12-02 22:58:59,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:58:59,324 INFO L225 Difference]: With dead ends: 67 [2018-12-02 22:58:59,324 INFO L226 Difference]: Without dead ends: 65 [2018-12-02 22:58:59,324 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 22:58:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-02 22:58:59,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2018-12-02 22:58:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-12-02 22:58:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2018-12-02 22:58:59,330 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 18 [2018-12-02 22:58:59,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:58:59,330 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2018-12-02 22:58:59,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 22:58:59,330 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2018-12-02 22:58:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 22:58:59,331 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:58:59,331 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:58:59,331 INFO L423 AbstractCegarLoop]: === Iteration 5 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:58:59,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:58:59,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1818077372, now seen corresponding path program 1 times [2018-12-02 22:58:59,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:58:59,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:58:59,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:58:59,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 22:58:59,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 22:58:59,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 22:58:59,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 22:58:59,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 22:58:59,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 22:58:59,351 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 4 states. [2018-12-02 22:58:59,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:58:59,361 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-12-02 22:58:59,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 22:58:59,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-12-02 22:58:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:58:59,361 INFO L225 Difference]: With dead ends: 62 [2018-12-02 22:58:59,361 INFO L226 Difference]: Without dead ends: 53 [2018-12-02 22:58:59,362 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 22:58:59,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-02 22:58:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-12-02 22:58:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-12-02 22:58:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-12-02 22:58:59,366 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 19 [2018-12-02 22:58:59,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:58:59,366 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-12-02 22:58:59,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 22:58:59,366 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-12-02 22:58:59,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 22:58:59,367 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:58:59,367 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:58:59,367 INFO L423 AbstractCegarLoop]: === Iteration 6 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:58:59,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:58:59,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1159773325, now seen corresponding path program 2 times [2018-12-02 22:58:59,367 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:58:59,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:58:59,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:58:59,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:58:59,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:58:59,404 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:58:59,411 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 22:58:59,416 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 22:58:59,417 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:58:59,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:58:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:58:59,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:58:59,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-12-02 22:58:59,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 22:58:59,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 22:58:59,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-02 22:58:59,437 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 9 states. [2018-12-02 22:58:59,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:58:59,497 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2018-12-02 22:58:59,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 22:58:59,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-12-02 22:58:59,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:58:59,498 INFO L225 Difference]: With dead ends: 78 [2018-12-02 22:58:59,498 INFO L226 Difference]: Without dead ends: 77 [2018-12-02 22:58:59,499 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-12-02 22:58:59,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-12-02 22:58:59,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2018-12-02 22:58:59,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-12-02 22:58:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2018-12-02 22:58:59,505 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 21 [2018-12-02 22:58:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:58:59,506 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2018-12-02 22:58:59,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 22:58:59,506 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2018-12-02 22:58:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 22:58:59,506 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:58:59,507 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:58:59,507 INFO L423 AbstractCegarLoop]: === Iteration 7 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:58:59,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:58:59,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1430047287, now seen corresponding path program 3 times [2018-12-02 22:58:59,507 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:58:59,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:58:59,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,508 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:58:59,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:58:59,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:58:59,594 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:58:59,600 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 22:58:59,606 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-02 22:58:59,607 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:58:59,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:58:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:58:59,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:58:59,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-12-02 22:58:59,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 22:58:59,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 22:58:59,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-12-02 22:58:59,629 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 11 states. [2018-12-02 22:58:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:58:59,717 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2018-12-02 22:58:59,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-02 22:58:59,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-12-02 22:58:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:58:59,718 INFO L225 Difference]: With dead ends: 98 [2018-12-02 22:58:59,718 INFO L226 Difference]: Without dead ends: 97 [2018-12-02 22:58:59,719 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2018-12-02 22:58:59,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-12-02 22:58:59,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2018-12-02 22:58:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-12-02 22:58:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2018-12-02 22:58:59,724 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 26 [2018-12-02 22:58:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:58:59,724 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2018-12-02 22:58:59,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 22:58:59,725 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2018-12-02 22:58:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-02 22:58:59,725 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:58:59,725 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:58:59,726 INFO L423 AbstractCegarLoop]: === Iteration 8 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:58:59,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:58:59,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1529291277, now seen corresponding path program 4 times [2018-12-02 22:58:59,726 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:58:59,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:58:59,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,727 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:58:59,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:58:59,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:58:59,813 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:58:59,819 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 22:58:59,825 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 22:58:59,825 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:58:59,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:58:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:58:59,847 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:58:59,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-12-02 22:58:59,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-02 22:58:59,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-02 22:58:59,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-12-02 22:58:59,848 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 13 states. [2018-12-02 22:58:59,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:58:59,953 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2018-12-02 22:58:59,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-02 22:58:59,953 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2018-12-02 22:58:59,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:58:59,954 INFO L225 Difference]: With dead ends: 118 [2018-12-02 22:58:59,955 INFO L226 Difference]: Without dead ends: 117 [2018-12-02 22:58:59,955 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2018-12-02 22:58:59,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-12-02 22:58:59,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2018-12-02 22:58:59,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-12-02 22:58:59,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2018-12-02 22:58:59,963 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 31 [2018-12-02 22:58:59,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:58:59,964 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2018-12-02 22:58:59,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-02 22:58:59,964 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2018-12-02 22:58:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-02 22:58:59,965 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:58:59,965 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:58:59,965 INFO L423 AbstractCegarLoop]: === Iteration 9 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:58:59,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:58:59,965 INFO L82 PathProgramCache]: Analyzing trace with hash -10526561, now seen corresponding path program 1 times [2018-12-02 22:58:59,965 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:58:59,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:58:59,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:58:59,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:58:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-02 22:59:00,002 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:00,002 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:00,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:59:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:00,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-02 22:59:00,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:00,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-02 22:59:00,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 22:59:00,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 22:59:00,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 22:59:00,053 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 6 states. [2018-12-02 22:59:00,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:00,075 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2018-12-02 22:59:00,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 22:59:00,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-12-02 22:59:00,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:00,076 INFO L225 Difference]: With dead ends: 153 [2018-12-02 22:59:00,076 INFO L226 Difference]: Without dead ends: 138 [2018-12-02 22:59:00,076 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 22:59:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-12-02 22:59:00,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-12-02 22:59:00,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-12-02 22:59:00,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2018-12-02 22:59:00,081 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 30 [2018-12-02 22:59:00,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:00,081 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2018-12-02 22:59:00,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 22:59:00,081 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2018-12-02 22:59:00,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-02 22:59:00,081 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:00,081 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:00,082 INFO L423 AbstractCegarLoop]: === Iteration 10 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:00,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:00,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1671413687, now seen corresponding path program 5 times [2018-12-02 22:59:00,082 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:00,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:00,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:00,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:59:00,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:59:00,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:00,163 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:00,171 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 22:59:00,181 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-02 22:59:00,181 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:00,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:59:00,205 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:00,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-12-02 22:59:00,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-02 22:59:00,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-02 22:59:00,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-12-02 22:59:00,206 INFO L87 Difference]: Start difference. First operand 133 states and 148 transitions. Second operand 15 states. [2018-12-02 22:59:00,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:00,340 INFO L93 Difference]: Finished difference Result 171 states and 177 transitions. [2018-12-02 22:59:00,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-02 22:59:00,341 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2018-12-02 22:59:00,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:00,341 INFO L225 Difference]: With dead ends: 171 [2018-12-02 22:59:00,341 INFO L226 Difference]: Without dead ends: 170 [2018-12-02 22:59:00,342 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2018-12-02 22:59:00,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-12-02 22:59:00,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 158. [2018-12-02 22:59:00,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-12-02 22:59:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2018-12-02 22:59:00,353 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 36 [2018-12-02 22:59:00,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:00,353 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2018-12-02 22:59:00,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-02 22:59:00,353 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2018-12-02 22:59:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-12-02 22:59:00,353 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:00,353 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:00,354 INFO L423 AbstractCegarLoop]: === Iteration 11 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:00,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:00,354 INFO L82 PathProgramCache]: Analyzing trace with hash 829642867, now seen corresponding path program 6 times [2018-12-02 22:59:00,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:00,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:00,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:00,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:00,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:59:00,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:00,461 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:00,473 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 22:59:00,484 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-12-02 22:59:00,484 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:00,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-02 22:59:00,536 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:00,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 17 [2018-12-02 22:59:00,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-02 22:59:00,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-02 22:59:00,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-12-02 22:59:00,537 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand 18 states. [2018-12-02 22:59:00,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:00,576 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2018-12-02 22:59:00,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 22:59:00,577 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2018-12-02 22:59:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:00,578 INFO L225 Difference]: With dead ends: 158 [2018-12-02 22:59:00,578 INFO L226 Difference]: Without dead ends: 157 [2018-12-02 22:59:00,578 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2018-12-02 22:59:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-12-02 22:59:00,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-12-02 22:59:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-12-02 22:59:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 175 transitions. [2018-12-02 22:59:00,585 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 175 transitions. Word has length 41 [2018-12-02 22:59:00,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:00,585 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 175 transitions. [2018-12-02 22:59:00,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-02 22:59:00,585 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 175 transitions. [2018-12-02 22:59:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-02 22:59:00,586 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:00,586 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:00,586 INFO L423 AbstractCegarLoop]: === Iteration 12 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:00,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:00,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1233481545, now seen corresponding path program 2 times [2018-12-02 22:59:00,586 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:00,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:00,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:00,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:00,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-02 22:59:00,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:00,618 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:00,626 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 22:59:00,634 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 22:59:00,634 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:00,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-02 22:59:00,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:00,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-02 22:59:00,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 22:59:00,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 22:59:00,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-02 22:59:00,662 INFO L87 Difference]: Start difference. First operand 157 states and 175 transitions. Second operand 8 states. [2018-12-02 22:59:00,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:00,689 INFO L93 Difference]: Finished difference Result 211 states and 241 transitions. [2018-12-02 22:59:00,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 22:59:00,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2018-12-02 22:59:00,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:00,690 INFO L225 Difference]: With dead ends: 211 [2018-12-02 22:59:00,690 INFO L226 Difference]: Without dead ends: 189 [2018-12-02 22:59:00,691 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-02 22:59:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-12-02 22:59:00,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2018-12-02 22:59:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-12-02 22:59:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 201 transitions. [2018-12-02 22:59:00,698 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 201 transitions. Word has length 42 [2018-12-02 22:59:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:00,698 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 201 transitions. [2018-12-02 22:59:00,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 22:59:00,698 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 201 transitions. [2018-12-02 22:59:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-12-02 22:59:00,700 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:00,700 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:00,700 INFO L423 AbstractCegarLoop]: === Iteration 13 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:00,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:00,701 INFO L82 PathProgramCache]: Analyzing trace with hash -677419169, now seen corresponding path program 3 times [2018-12-02 22:59:00,701 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:00,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:00,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:00,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:00,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-12-02 22:59:00,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:00,747 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:00,753 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 22:59:00,760 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-02 22:59:00,760 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:00,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-12-02 22:59:00,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:00,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-12-02 22:59:00,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 22:59:00,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 22:59:00,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-02 22:59:00,802 INFO L87 Difference]: Start difference. First operand 183 states and 201 transitions. Second operand 10 states. [2018-12-02 22:59:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:00,837 INFO L93 Difference]: Finished difference Result 237 states and 267 transitions. [2018-12-02 22:59:00,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 22:59:00,837 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-12-02 22:59:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:00,838 INFO L225 Difference]: With dead ends: 237 [2018-12-02 22:59:00,838 INFO L226 Difference]: Without dead ends: 208 [2018-12-02 22:59:00,839 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-02 22:59:00,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-12-02 22:59:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2018-12-02 22:59:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-12-02 22:59:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2018-12-02 22:59:00,844 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 54 [2018-12-02 22:59:00,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:00,844 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2018-12-02 22:59:00,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 22:59:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2018-12-02 22:59:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-12-02 22:59:00,845 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:00,845 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:00,846 INFO L423 AbstractCegarLoop]: === Iteration 14 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:00,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:00,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1491778423, now seen corresponding path program 4 times [2018-12-02 22:59:00,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:00,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:00,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:00,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:00,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-12-02 22:59:00,911 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:00,911 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:00,917 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 22:59:00,928 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 22:59:00,928 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:00,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-12-02 22:59:00,992 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:00,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-12-02 22:59:00,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 22:59:00,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 22:59:00,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-12-02 22:59:00,993 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand 12 states. [2018-12-02 22:59:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:01,033 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2018-12-02 22:59:01,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 22:59:01,033 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2018-12-02 22:59:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:01,034 INFO L225 Difference]: With dead ends: 256 [2018-12-02 22:59:01,034 INFO L226 Difference]: Without dead ends: 220 [2018-12-02 22:59:01,034 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-12-02 22:59:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-12-02 22:59:01,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2018-12-02 22:59:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-12-02 22:59:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 232 transitions. [2018-12-02 22:59:01,039 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 232 transitions. Word has length 66 [2018-12-02 22:59:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:01,039 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 232 transitions. [2018-12-02 22:59:01,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 22:59:01,040 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 232 transitions. [2018-12-02 22:59:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-12-02 22:59:01,040 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:01,041 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:01,041 INFO L423 AbstractCegarLoop]: === Iteration 15 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:01,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:01,041 INFO L82 PathProgramCache]: Analyzing trace with hash 501489183, now seen corresponding path program 5 times [2018-12-02 22:59:01,041 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:01,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:01,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:01,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:01,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-12-02 22:59:01,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:01,109 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:01,117 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 22:59:01,130 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-12-02 22:59:01,130 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:01,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-12-02 22:59:01,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:01,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-12-02 22:59:01,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-02 22:59:01,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-02 22:59:01,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-12-02 22:59:01,204 INFO L87 Difference]: Start difference. First operand 214 states and 232 transitions. Second operand 14 states. [2018-12-02 22:59:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:01,237 INFO L93 Difference]: Finished difference Result 268 states and 298 transitions. [2018-12-02 22:59:01,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-02 22:59:01,237 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2018-12-02 22:59:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:01,238 INFO L225 Difference]: With dead ends: 268 [2018-12-02 22:59:01,238 INFO L226 Difference]: Without dead ends: 227 [2018-12-02 22:59:01,239 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-12-02 22:59:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-12-02 22:59:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 221. [2018-12-02 22:59:01,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-12-02 22:59:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 239 transitions. [2018-12-02 22:59:01,247 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 239 transitions. Word has length 78 [2018-12-02 22:59:01,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:01,247 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 239 transitions. [2018-12-02 22:59:01,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-02 22:59:01,247 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 239 transitions. [2018-12-02 22:59:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-12-02 22:59:01,248 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:01,248 INFO L402 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:01,248 INFO L423 AbstractCegarLoop]: === Iteration 16 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:01,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:01,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1033999927, now seen corresponding path program 6 times [2018-12-02 22:59:01,249 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:01,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:01,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:01,250 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:01,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-12-02 22:59:01,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:01,340 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:01,348 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 22:59:01,366 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-12-02 22:59:01,366 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:01,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-12-02 22:59:01,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:01,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-12-02 22:59:01,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-02 22:59:01,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-02 22:59:01,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-12-02 22:59:01,454 INFO L87 Difference]: Start difference. First operand 221 states and 239 transitions. Second operand 16 states. [2018-12-02 22:59:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:01,503 INFO L93 Difference]: Finished difference Result 275 states and 305 transitions. [2018-12-02 22:59:01,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-02 22:59:01,503 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2018-12-02 22:59:01,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:01,504 INFO L225 Difference]: With dead ends: 275 [2018-12-02 22:59:01,504 INFO L226 Difference]: Without dead ends: 234 [2018-12-02 22:59:01,504 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-12-02 22:59:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-12-02 22:59:01,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 228. [2018-12-02 22:59:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-12-02 22:59:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 246 transitions. [2018-12-02 22:59:01,510 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 246 transitions. Word has length 90 [2018-12-02 22:59:01,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:01,510 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 246 transitions. [2018-12-02 22:59:01,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-02 22:59:01,510 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 246 transitions. [2018-12-02 22:59:01,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-12-02 22:59:01,512 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:01,512 INFO L402 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:01,512 INFO L423 AbstractCegarLoop]: === Iteration 17 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:01,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:01,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1169786079, now seen corresponding path program 7 times [2018-12-02 22:59:01,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:01,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:01,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:01,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:01,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-12-02 22:59:01,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:01,638 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:01,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:59:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:01,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-12-02 22:59:01,749 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:01,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-12-02 22:59:01,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-02 22:59:01,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-02 22:59:01,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-12-02 22:59:01,750 INFO L87 Difference]: Start difference. First operand 228 states and 246 transitions. Second operand 18 states. [2018-12-02 22:59:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:01,798 INFO L93 Difference]: Finished difference Result 282 states and 312 transitions. [2018-12-02 22:59:01,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-02 22:59:01,799 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2018-12-02 22:59:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:01,800 INFO L225 Difference]: With dead ends: 282 [2018-12-02 22:59:01,800 INFO L226 Difference]: Without dead ends: 241 [2018-12-02 22:59:01,800 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 95 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-12-02 22:59:01,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-12-02 22:59:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2018-12-02 22:59:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-12-02 22:59:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 253 transitions. [2018-12-02 22:59:01,805 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 253 transitions. Word has length 102 [2018-12-02 22:59:01,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:01,805 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 253 transitions. [2018-12-02 22:59:01,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-02 22:59:01,805 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 253 transitions. [2018-12-02 22:59:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-12-02 22:59:01,806 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:01,806 INFO L402 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:01,807 INFO L423 AbstractCegarLoop]: === Iteration 18 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:01,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:01,807 INFO L82 PathProgramCache]: Analyzing trace with hash 117714501, now seen corresponding path program 8 times [2018-12-02 22:59:01,807 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:01,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:01,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:01,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:59:01,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-12-02 22:59:01,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:01,921 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:01,928 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 22:59:01,946 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 22:59:01,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:01,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-12-02 22:59:02,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:02,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-12-02 22:59:02,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-02 22:59:02,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-02 22:59:02,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-12-02 22:59:02,048 INFO L87 Difference]: Start difference. First operand 235 states and 253 transitions. Second operand 20 states. [2018-12-02 22:59:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:02,121 INFO L93 Difference]: Finished difference Result 289 states and 319 transitions. [2018-12-02 22:59:02,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-02 22:59:02,122 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 149 [2018-12-02 22:59:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:02,123 INFO L225 Difference]: With dead ends: 289 [2018-12-02 22:59:02,123 INFO L226 Difference]: Without dead ends: 248 [2018-12-02 22:59:02,123 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 141 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-12-02 22:59:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-12-02 22:59:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 242. [2018-12-02 22:59:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-12-02 22:59:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 260 transitions. [2018-12-02 22:59:02,127 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 260 transitions. Word has length 149 [2018-12-02 22:59:02,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:02,127 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 260 transitions. [2018-12-02 22:59:02,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-02 22:59:02,127 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 260 transitions. [2018-12-02 22:59:02,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-12-02 22:59:02,128 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:02,128 INFO L402 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:02,129 INFO L423 AbstractCegarLoop]: === Iteration 19 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:02,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:02,129 INFO L82 PathProgramCache]: Analyzing trace with hash 497785759, now seen corresponding path program 9 times [2018-12-02 22:59:02,129 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:02,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:02,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:02,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:02,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-12-02 22:59:02,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:02,257 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:02,263 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 22:59:02,283 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-12-02 22:59:02,283 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:02,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-12-02 22:59:02,422 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:02,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-12-02 22:59:02,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-02 22:59:02,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-02 22:59:02,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-12-02 22:59:02,423 INFO L87 Difference]: Start difference. First operand 242 states and 260 transitions. Second operand 22 states. [2018-12-02 22:59:02,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:02,496 INFO L93 Difference]: Finished difference Result 296 states and 326 transitions. [2018-12-02 22:59:02,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-02 22:59:02,497 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 126 [2018-12-02 22:59:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:02,498 INFO L225 Difference]: With dead ends: 296 [2018-12-02 22:59:02,498 INFO L226 Difference]: Without dead ends: 255 [2018-12-02 22:59:02,498 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 117 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-12-02 22:59:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-12-02 22:59:02,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2018-12-02 22:59:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-12-02 22:59:02,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 267 transitions. [2018-12-02 22:59:02,506 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 267 transitions. Word has length 126 [2018-12-02 22:59:02,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:02,506 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 267 transitions. [2018-12-02 22:59:02,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-02 22:59:02,506 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 267 transitions. [2018-12-02 22:59:02,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-12-02 22:59:02,508 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:02,508 INFO L402 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:02,508 INFO L423 AbstractCegarLoop]: === Iteration 20 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:02,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:02,508 INFO L82 PathProgramCache]: Analyzing trace with hash -911147131, now seen corresponding path program 10 times [2018-12-02 22:59:02,508 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:02,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:02,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:02,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:02,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2018-12-02 22:59:02,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:02,670 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:02,679 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 22:59:02,701 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 22:59:02,701 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:02,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2018-12-02 22:59:02,866 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:02,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-12-02 22:59:02,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-02 22:59:02,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-02 22:59:02,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-12-02 22:59:02,867 INFO L87 Difference]: Start difference. First operand 249 states and 267 transitions. Second operand 24 states. [2018-12-02 22:59:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:02,941 INFO L93 Difference]: Finished difference Result 303 states and 333 transitions. [2018-12-02 22:59:02,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-12-02 22:59:02,941 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 173 [2018-12-02 22:59:02,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:02,942 INFO L225 Difference]: With dead ends: 303 [2018-12-02 22:59:02,942 INFO L226 Difference]: Without dead ends: 262 [2018-12-02 22:59:02,943 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 163 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-12-02 22:59:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-12-02 22:59:02,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2018-12-02 22:59:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-12-02 22:59:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 274 transitions. [2018-12-02 22:59:02,949 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 274 transitions. Word has length 173 [2018-12-02 22:59:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:02,950 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 274 transitions. [2018-12-02 22:59:02,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-02 22:59:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 274 transitions. [2018-12-02 22:59:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-12-02 22:59:02,952 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:02,952 INFO L402 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:02,952 INFO L423 AbstractCegarLoop]: === Iteration 21 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:02,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:02,953 INFO L82 PathProgramCache]: Analyzing trace with hash 705676187, now seen corresponding path program 11 times [2018-12-02 22:59:02,953 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:02,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:02,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:02,953 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:02,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-12-02 22:59:03,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:03,143 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:03,151 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 22:59:03,190 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2018-12-02 22:59:03,190 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:03,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-12-02 22:59:03,372 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:03,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-12-02 22:59:03,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-12-02 22:59:03,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-12-02 22:59:03,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-12-02 22:59:03,373 INFO L87 Difference]: Start difference. First operand 256 states and 274 transitions. Second operand 26 states. [2018-12-02 22:59:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:03,436 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2018-12-02 22:59:03,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-12-02 22:59:03,436 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 185 [2018-12-02 22:59:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:03,438 INFO L225 Difference]: With dead ends: 310 [2018-12-02 22:59:03,438 INFO L226 Difference]: Without dead ends: 269 [2018-12-02 22:59:03,438 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 174 SyntacticMatches, 11 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-12-02 22:59:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-12-02 22:59:03,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2018-12-02 22:59:03,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-12-02 22:59:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 281 transitions. [2018-12-02 22:59:03,444 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 281 transitions. Word has length 185 [2018-12-02 22:59:03,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:03,445 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 281 transitions. [2018-12-02 22:59:03,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-12-02 22:59:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 281 transitions. [2018-12-02 22:59:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-12-02 22:59:03,446 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:03,447 INFO L402 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:03,447 INFO L423 AbstractCegarLoop]: === Iteration 22 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:03,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:03,447 INFO L82 PathProgramCache]: Analyzing trace with hash 219789705, now seen corresponding path program 12 times [2018-12-02 22:59:03,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:03,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:03,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:03,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:03,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-12-02 22:59:03,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:03,651 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:03,657 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 22:59:03,678 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-12-02 22:59:03,678 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:03,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-12-02 22:59:03,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:03,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-12-02 22:59:03,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-02 22:59:03,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-02 22:59:03,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-12-02 22:59:03,835 INFO L87 Difference]: Start difference. First operand 263 states and 281 transitions. Second operand 28 states. [2018-12-02 22:59:03,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:03,908 INFO L93 Difference]: Finished difference Result 317 states and 347 transitions. [2018-12-02 22:59:03,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-02 22:59:03,908 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 162 [2018-12-02 22:59:03,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:03,909 INFO L225 Difference]: With dead ends: 317 [2018-12-02 22:59:03,909 INFO L226 Difference]: Without dead ends: 276 [2018-12-02 22:59:03,909 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 150 SyntacticMatches, 12 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-12-02 22:59:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-12-02 22:59:03,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2018-12-02 22:59:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-12-02 22:59:03,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 288 transitions. [2018-12-02 22:59:03,913 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 288 transitions. Word has length 162 [2018-12-02 22:59:03,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:03,914 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 288 transitions. [2018-12-02 22:59:03,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-12-02 22:59:03,914 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 288 transitions. [2018-12-02 22:59:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-12-02 22:59:03,914 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:03,915 INFO L402 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:03,915 INFO L423 AbstractCegarLoop]: === Iteration 23 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:03,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:03,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1595267359, now seen corresponding path program 13 times [2018-12-02 22:59:03,915 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:03,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:03,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:03,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:03,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-12-02 22:59:04,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:04,119 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:04,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:59:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:04,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-12-02 22:59:04,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:04,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-12-02 22:59:04,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-12-02 22:59:04,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-12-02 22:59:04,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-12-02 22:59:04,342 INFO L87 Difference]: Start difference. First operand 270 states and 288 transitions. Second operand 30 states. [2018-12-02 22:59:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:04,422 INFO L93 Difference]: Finished difference Result 324 states and 354 transitions. [2018-12-02 22:59:04,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-12-02 22:59:04,422 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 174 [2018-12-02 22:59:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:04,423 INFO L225 Difference]: With dead ends: 324 [2018-12-02 22:59:04,423 INFO L226 Difference]: Without dead ends: 283 [2018-12-02 22:59:04,424 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 161 SyntacticMatches, 13 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-12-02 22:59:04,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-12-02 22:59:04,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 277. [2018-12-02 22:59:04,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-12-02 22:59:04,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 295 transitions. [2018-12-02 22:59:04,428 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 295 transitions. Word has length 174 [2018-12-02 22:59:04,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:04,428 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 295 transitions. [2018-12-02 22:59:04,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-12-02 22:59:04,428 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 295 transitions. [2018-12-02 22:59:04,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-12-02 22:59:04,429 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:04,429 INFO L402 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:04,430 INFO L423 AbstractCegarLoop]: === Iteration 24 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:04,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:04,430 INFO L82 PathProgramCache]: Analyzing trace with hash -611151355, now seen corresponding path program 14 times [2018-12-02 22:59:04,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:04,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:04,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:04,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:59:04,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2018-12-02 22:59:04,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:04,676 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:04,681 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 22:59:04,703 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 22:59:04,703 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:04,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2018-12-02 22:59:04,899 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:04,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-12-02 22:59:04,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-12-02 22:59:04,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-12-02 22:59:04,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-12-02 22:59:04,900 INFO L87 Difference]: Start difference. First operand 277 states and 295 transitions. Second operand 32 states. [2018-12-02 22:59:04,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:04,963 INFO L93 Difference]: Finished difference Result 331 states and 361 transitions. [2018-12-02 22:59:04,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-12-02 22:59:04,963 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 221 [2018-12-02 22:59:04,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:04,964 INFO L225 Difference]: With dead ends: 331 [2018-12-02 22:59:04,964 INFO L226 Difference]: Without dead ends: 290 [2018-12-02 22:59:04,965 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 207 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-12-02 22:59:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-12-02 22:59:04,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 284. [2018-12-02 22:59:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-12-02 22:59:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 302 transitions. [2018-12-02 22:59:04,972 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 302 transitions. Word has length 221 [2018-12-02 22:59:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:04,973 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 302 transitions. [2018-12-02 22:59:04,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-12-02 22:59:04,973 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 302 transitions. [2018-12-02 22:59:04,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-12-02 22:59:04,975 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:04,975 INFO L402 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:04,975 INFO L423 AbstractCegarLoop]: === Iteration 25 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:04,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:04,976 INFO L82 PathProgramCache]: Analyzing trace with hash 2030663963, now seen corresponding path program 15 times [2018-12-02 22:59:04,976 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:04,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:04,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:04,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:04,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-12-02 22:59:05,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:05,357 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:05,363 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 22:59:05,393 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-12-02 22:59:05,393 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:05,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-12-02 22:59:05,610 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:05,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-12-02 22:59:05,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-12-02 22:59:05,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-12-02 22:59:05,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-12-02 22:59:05,610 INFO L87 Difference]: Start difference. First operand 284 states and 302 transitions. Second operand 34 states. [2018-12-02 22:59:05,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:05,687 INFO L93 Difference]: Finished difference Result 338 states and 368 transitions. [2018-12-02 22:59:05,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-12-02 22:59:05,687 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 233 [2018-12-02 22:59:05,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:05,688 INFO L225 Difference]: With dead ends: 338 [2018-12-02 22:59:05,688 INFO L226 Difference]: Without dead ends: 297 [2018-12-02 22:59:05,688 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 218 SyntacticMatches, 15 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-12-02 22:59:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-12-02 22:59:05,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 291. [2018-12-02 22:59:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-12-02 22:59:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 309 transitions. [2018-12-02 22:59:05,693 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 309 transitions. Word has length 233 [2018-12-02 22:59:05,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:05,693 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 309 transitions. [2018-12-02 22:59:05,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-12-02 22:59:05,693 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 309 transitions. [2018-12-02 22:59:05,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-12-02 22:59:05,695 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:05,695 INFO L402 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:05,695 INFO L423 AbstractCegarLoop]: === Iteration 26 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:05,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:05,695 INFO L82 PathProgramCache]: Analyzing trace with hash -687614967, now seen corresponding path program 16 times [2018-12-02 22:59:05,695 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:05,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:05,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:05,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:05,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-12-02 22:59:05,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:05,989 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:05,995 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 22:59:06,019 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 22:59:06,019 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:06,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-12-02 22:59:06,256 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:06,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-12-02 22:59:06,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-02 22:59:06,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-02 22:59:06,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-12-02 22:59:06,257 INFO L87 Difference]: Start difference. First operand 291 states and 309 transitions. Second operand 36 states. [2018-12-02 22:59:06,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:06,370 INFO L93 Difference]: Finished difference Result 345 states and 375 transitions. [2018-12-02 22:59:06,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-02 22:59:06,371 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 210 [2018-12-02 22:59:06,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:06,371 INFO L225 Difference]: With dead ends: 345 [2018-12-02 22:59:06,372 INFO L226 Difference]: Without dead ends: 304 [2018-12-02 22:59:06,372 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-12-02 22:59:06,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-12-02 22:59:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2018-12-02 22:59:06,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-12-02 22:59:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 316 transitions. [2018-12-02 22:59:06,378 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 316 transitions. Word has length 210 [2018-12-02 22:59:06,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:06,378 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 316 transitions. [2018-12-02 22:59:06,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-02 22:59:06,378 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 316 transitions. [2018-12-02 22:59:06,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-12-02 22:59:06,380 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:06,380 INFO L402 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:06,380 INFO L423 AbstractCegarLoop]: === Iteration 27 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:06,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:06,380 INFO L82 PathProgramCache]: Analyzing trace with hash 362634203, now seen corresponding path program 17 times [2018-12-02 22:59:06,380 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:06,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:06,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:06,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:06,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-12-02 22:59:06,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:06,698 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:06,704 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 22:59:06,744 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2018-12-02 22:59:06,744 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:06,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-12-02 22:59:07,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:07,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-12-02 22:59:07,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-12-02 22:59:07,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-12-02 22:59:07,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-12-02 22:59:07,015 INFO L87 Difference]: Start difference. First operand 298 states and 316 transitions. Second operand 38 states. [2018-12-02 22:59:07,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:07,088 INFO L93 Difference]: Finished difference Result 352 states and 382 transitions. [2018-12-02 22:59:07,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-12-02 22:59:07,089 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 257 [2018-12-02 22:59:07,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:07,090 INFO L225 Difference]: With dead ends: 352 [2018-12-02 22:59:07,090 INFO L226 Difference]: Without dead ends: 311 [2018-12-02 22:59:07,090 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 240 SyntacticMatches, 17 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-12-02 22:59:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-12-02 22:59:07,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 305. [2018-12-02 22:59:07,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-12-02 22:59:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 323 transitions. [2018-12-02 22:59:07,094 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 323 transitions. Word has length 257 [2018-12-02 22:59:07,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:07,095 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 323 transitions. [2018-12-02 22:59:07,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-12-02 22:59:07,095 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 323 transitions. [2018-12-02 22:59:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-12-02 22:59:07,095 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:07,096 INFO L402 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:07,096 INFO L423 AbstractCegarLoop]: === Iteration 28 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:07,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:07,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2128176261, now seen corresponding path program 18 times [2018-12-02 22:59:07,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:07,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:07,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:07,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:07,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-12-02 22:59:07,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:07,499 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:07,504 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 22:59:07,548 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2018-12-02 22:59:07,548 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:07,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-12-02 22:59:07,876 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:07,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-12-02 22:59:07,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-12-02 22:59:07,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-12-02 22:59:07,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-12-02 22:59:07,877 INFO L87 Difference]: Start difference. First operand 305 states and 323 transitions. Second operand 40 states. [2018-12-02 22:59:07,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:07,974 INFO L93 Difference]: Finished difference Result 359 states and 389 transitions. [2018-12-02 22:59:07,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-12-02 22:59:07,975 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 269 [2018-12-02 22:59:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:07,975 INFO L225 Difference]: With dead ends: 359 [2018-12-02 22:59:07,976 INFO L226 Difference]: Without dead ends: 318 [2018-12-02 22:59:07,976 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 251 SyntacticMatches, 18 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-12-02 22:59:07,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-12-02 22:59:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 312. [2018-12-02 22:59:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-12-02 22:59:07,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 330 transitions. [2018-12-02 22:59:07,980 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 330 transitions. Word has length 269 [2018-12-02 22:59:07,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:07,980 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 330 transitions. [2018-12-02 22:59:07,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-12-02 22:59:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 330 transitions. [2018-12-02 22:59:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-12-02 22:59:07,981 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:07,981 INFO L402 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:07,981 INFO L423 AbstractCegarLoop]: === Iteration 29 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:07,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:07,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1319497371, now seen corresponding path program 19 times [2018-12-02 22:59:07,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:07,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:07,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:07,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:07,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-12-02 22:59:08,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:08,360 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:08,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:59:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:08,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-12-02 22:59:08,743 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:08,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-12-02 22:59:08,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-12-02 22:59:08,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-12-02 22:59:08,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-12-02 22:59:08,745 INFO L87 Difference]: Start difference. First operand 312 states and 330 transitions. Second operand 42 states. [2018-12-02 22:59:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:08,845 INFO L93 Difference]: Finished difference Result 366 states and 396 transitions. [2018-12-02 22:59:08,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-12-02 22:59:08,845 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 281 [2018-12-02 22:59:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:08,847 INFO L225 Difference]: With dead ends: 366 [2018-12-02 22:59:08,847 INFO L226 Difference]: Without dead ends: 325 [2018-12-02 22:59:08,847 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 262 SyntacticMatches, 19 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-12-02 22:59:08,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-12-02 22:59:08,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 319. [2018-12-02 22:59:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-02 22:59:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 337 transitions. [2018-12-02 22:59:08,852 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 337 transitions. Word has length 281 [2018-12-02 22:59:08,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:08,852 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 337 transitions. [2018-12-02 22:59:08,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-12-02 22:59:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 337 transitions. [2018-12-02 22:59:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-12-02 22:59:08,853 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:08,853 INFO L402 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:08,854 INFO L423 AbstractCegarLoop]: === Iteration 30 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:08,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:08,854 INFO L82 PathProgramCache]: Analyzing trace with hash 973391301, now seen corresponding path program 20 times [2018-12-02 22:59:08,854 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:08,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:08,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:08,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:59:08,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-12-02 22:59:09,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:09,228 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:09,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 22:59:09,262 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 22:59:09,263 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:09,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-12-02 22:59:09,603 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:09,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-12-02 22:59:09,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-12-02 22:59:09,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-12-02 22:59:09,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-12-02 22:59:09,604 INFO L87 Difference]: Start difference. First operand 319 states and 337 transitions. Second operand 44 states. [2018-12-02 22:59:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:09,727 INFO L93 Difference]: Finished difference Result 373 states and 403 transitions. [2018-12-02 22:59:09,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-12-02 22:59:09,728 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 293 [2018-12-02 22:59:09,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:09,728 INFO L225 Difference]: With dead ends: 373 [2018-12-02 22:59:09,729 INFO L226 Difference]: Without dead ends: 332 [2018-12-02 22:59:09,729 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 273 SyntacticMatches, 20 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-12-02 22:59:09,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-12-02 22:59:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 326. [2018-12-02 22:59:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-12-02 22:59:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 344 transitions. [2018-12-02 22:59:09,733 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 344 transitions. Word has length 293 [2018-12-02 22:59:09,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:09,733 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 344 transitions. [2018-12-02 22:59:09,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-12-02 22:59:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 344 transitions. [2018-12-02 22:59:09,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-12-02 22:59:09,734 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:09,734 INFO L402 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:09,734 INFO L423 AbstractCegarLoop]: === Iteration 31 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:09,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:09,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1062260389, now seen corresponding path program 21 times [2018-12-02 22:59:09,735 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:09,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:09,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:09,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:09,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-12-02 22:59:10,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:10,162 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:10,168 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 22:59:10,209 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-12-02 22:59:10,209 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:10,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-12-02 22:59:10,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:10,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-12-02 22:59:10,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-12-02 22:59:10,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-12-02 22:59:10,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-12-02 22:59:10,600 INFO L87 Difference]: Start difference. First operand 326 states and 344 transitions. Second operand 46 states. [2018-12-02 22:59:10,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:10,721 INFO L93 Difference]: Finished difference Result 380 states and 410 transitions. [2018-12-02 22:59:10,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-12-02 22:59:10,721 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 305 [2018-12-02 22:59:10,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:10,722 INFO L225 Difference]: With dead ends: 380 [2018-12-02 22:59:10,722 INFO L226 Difference]: Without dead ends: 339 [2018-12-02 22:59:10,723 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 284 SyntacticMatches, 21 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-12-02 22:59:10,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-12-02 22:59:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2018-12-02 22:59:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-12-02 22:59:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 351 transitions. [2018-12-02 22:59:10,726 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 351 transitions. Word has length 305 [2018-12-02 22:59:10,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:10,726 INFO L480 AbstractCegarLoop]: Abstraction has 333 states and 351 transitions. [2018-12-02 22:59:10,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-12-02 22:59:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 351 transitions. [2018-12-02 22:59:10,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-12-02 22:59:10,727 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:10,728 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:10,728 INFO L423 AbstractCegarLoop]: === Iteration 32 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:10,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:10,728 INFO L82 PathProgramCache]: Analyzing trace with hash -953846011, now seen corresponding path program 22 times [2018-12-02 22:59:10,728 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:10,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:10,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:10,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:10,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:11,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:11,198 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:11,204 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 22:59:11,233 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 22:59:11,233 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:11,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:11,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:11,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-12-02 22:59:11,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-12-02 22:59:11,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-12-02 22:59:11,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-12-02 22:59:11,632 INFO L87 Difference]: Start difference. First operand 333 states and 351 transitions. Second operand 48 states. [2018-12-02 22:59:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:11,750 INFO L93 Difference]: Finished difference Result 387 states and 417 transitions. [2018-12-02 22:59:11,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-12-02 22:59:11,750 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 317 [2018-12-02 22:59:11,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:11,751 INFO L225 Difference]: With dead ends: 387 [2018-12-02 22:59:11,751 INFO L226 Difference]: Without dead ends: 346 [2018-12-02 22:59:11,751 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 295 SyntacticMatches, 22 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-12-02 22:59:11,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-12-02 22:59:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 340. [2018-12-02 22:59:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-12-02 22:59:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 358 transitions. [2018-12-02 22:59:11,755 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 358 transitions. Word has length 317 [2018-12-02 22:59:11,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:11,755 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 358 transitions. [2018-12-02 22:59:11,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-12-02 22:59:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 358 transitions. [2018-12-02 22:59:11,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-12-02 22:59:11,756 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:11,756 INFO L402 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:11,756 INFO L423 AbstractCegarLoop]: === Iteration 33 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:11,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:11,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1555749861, now seen corresponding path program 23 times [2018-12-02 22:59:11,757 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:11,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:11,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:11,757 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:11,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 2003 proven. 936 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-12-02 22:59:12,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:12,236 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:12,242 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 22:59:12,317 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2018-12-02 22:59:12,317 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:12,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 2003 proven. 936 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-12-02 22:59:12,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:12,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-12-02 22:59:12,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-12-02 22:59:12,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-12-02 22:59:12,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1475, Unknown=0, NotChecked=0, Total=1892 [2018-12-02 22:59:12,425 INFO L87 Difference]: Start difference. First operand 340 states and 358 transitions. Second operand 44 states. [2018-12-02 22:59:13,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:13,525 INFO L93 Difference]: Finished difference Result 568 states and 588 transitions. [2018-12-02 22:59:13,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-12-02 22:59:13,525 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 329 [2018-12-02 22:59:13,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:13,527 INFO L225 Difference]: With dead ends: 568 [2018-12-02 22:59:13,528 INFO L226 Difference]: Without dead ends: 399 [2018-12-02 22:59:13,530 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2372 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3952, Invalid=9388, Unknown=0, NotChecked=0, Total=13340 [2018-12-02 22:59:13,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-12-02 22:59:13,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 387. [2018-12-02 22:59:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-12-02 22:59:13,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 405 transitions. [2018-12-02 22:59:13,535 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 405 transitions. Word has length 329 [2018-12-02 22:59:13,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:13,535 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 405 transitions. [2018-12-02 22:59:13,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-12-02 22:59:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 405 transitions. [2018-12-02 22:59:13,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-12-02 22:59:13,536 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:13,536 INFO L402 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:13,537 INFO L423 AbstractCegarLoop]: === Iteration 34 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:13,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:13,537 INFO L82 PathProgramCache]: Analyzing trace with hash 878541535, now seen corresponding path program 24 times [2018-12-02 22:59:13,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:13,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:13,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:13,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:13,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-12-02 22:59:14,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:14,055 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:14,061 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 22:59:14,111 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-12-02 22:59:14,111 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:14,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-12-02 22:59:14,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:14,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-12-02 22:59:14,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-12-02 22:59:14,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-12-02 22:59:14,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-12-02 22:59:14,557 INFO L87 Difference]: Start difference. First operand 387 states and 405 transitions. Second operand 50 states. [2018-12-02 22:59:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:14,688 INFO L93 Difference]: Finished difference Result 436 states and 463 transitions. [2018-12-02 22:59:14,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-12-02 22:59:14,688 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 294 [2018-12-02 22:59:14,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:14,689 INFO L225 Difference]: With dead ends: 436 [2018-12-02 22:59:14,689 INFO L226 Difference]: Without dead ends: 388 [2018-12-02 22:59:14,690 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 271 SyntacticMatches, 23 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-12-02 22:59:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-12-02 22:59:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-12-02 22:59:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-12-02 22:59:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 398 transitions. [2018-12-02 22:59:14,694 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 398 transitions. Word has length 294 [2018-12-02 22:59:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:14,694 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 398 transitions. [2018-12-02 22:59:14,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-12-02 22:59:14,694 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 398 transitions. [2018-12-02 22:59:14,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-12-02 22:59:14,696 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:14,696 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:14,696 INFO L423 AbstractCegarLoop]: === Iteration 35 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:14,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:14,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1456651717, now seen corresponding path program 25 times [2018-12-02 22:59:14,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:14,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:14,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:14,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:14,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4263 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:15,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:15,238 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:15,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:59:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:15,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4263 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:15,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:15,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-12-02 22:59:15,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-12-02 22:59:15,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-12-02 22:59:15,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-12-02 22:59:15,754 INFO L87 Difference]: Start difference. First operand 383 states and 398 transitions. Second operand 52 states. [2018-12-02 22:59:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:15,876 INFO L93 Difference]: Finished difference Result 424 states and 446 transitions. [2018-12-02 22:59:15,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-12-02 22:59:15,876 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 331 [2018-12-02 22:59:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:15,877 INFO L225 Difference]: With dead ends: 424 [2018-12-02 22:59:15,877 INFO L226 Difference]: Without dead ends: 376 [2018-12-02 22:59:15,877 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 307 SyntacticMatches, 24 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-12-02 22:59:15,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-12-02 22:59:15,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2018-12-02 22:59:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-12-02 22:59:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 384 transitions. [2018-12-02 22:59:15,881 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 384 transitions. Word has length 331 [2018-12-02 22:59:15,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:15,881 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 384 transitions. [2018-12-02 22:59:15,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-12-02 22:59:15,881 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 384 transitions. [2018-12-02 22:59:15,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-12-02 22:59:15,883 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:15,883 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:15,883 INFO L423 AbstractCegarLoop]: === Iteration 36 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:15,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:15,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2033410913, now seen corresponding path program 26 times [2018-12-02 22:59:15,883 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:15,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:15,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:15,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 22:59:15,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4435 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:16,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:16,456 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:16,463 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 22:59:16,497 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 22:59:16,497 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:16,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4435 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:17,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:17,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-12-02 22:59:17,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-12-02 22:59:17,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-12-02 22:59:17,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-12-02 22:59:17,014 INFO L87 Difference]: Start difference. First operand 372 states and 384 transitions. Second operand 54 states. [2018-12-02 22:59:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:17,185 INFO L93 Difference]: Finished difference Result 405 states and 422 transitions. [2018-12-02 22:59:17,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-12-02 22:59:17,185 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 338 [2018-12-02 22:59:17,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:17,186 INFO L225 Difference]: With dead ends: 405 [2018-12-02 22:59:17,186 INFO L226 Difference]: Without dead ends: 357 [2018-12-02 22:59:17,187 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 313 SyntacticMatches, 25 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-12-02 22:59:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-12-02 22:59:17,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 354. [2018-12-02 22:59:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-12-02 22:59:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 363 transitions. [2018-12-02 22:59:17,190 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 363 transitions. Word has length 338 [2018-12-02 22:59:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:17,190 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 363 transitions. [2018-12-02 22:59:17,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-12-02 22:59:17,191 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 363 transitions. [2018-12-02 22:59:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-12-02 22:59:17,192 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:17,192 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:17,192 INFO L423 AbstractCegarLoop]: === Iteration 37 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:17,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash -681757563, now seen corresponding path program 27 times [2018-12-02 22:59:17,192 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:17,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:17,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:17,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:17,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4614 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:17,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:17,794 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:17,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 22:59:17,850 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-12-02 22:59:17,850 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:17,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4614 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:18,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:18,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-12-02 22:59:18,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-12-02 22:59:18,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-12-02 22:59:18,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-12-02 22:59:18,412 INFO L87 Difference]: Start difference. First operand 354 states and 363 transitions. Second operand 56 states. [2018-12-02 22:59:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:18,564 INFO L93 Difference]: Finished difference Result 379 states and 391 transitions. [2018-12-02 22:59:18,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-12-02 22:59:18,564 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 345 [2018-12-02 22:59:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:18,566 INFO L225 Difference]: With dead ends: 379 [2018-12-02 22:59:18,566 INFO L226 Difference]: Without dead ends: 331 [2018-12-02 22:59:18,566 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 319 SyntacticMatches, 26 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-12-02 22:59:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-12-02 22:59:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2018-12-02 22:59:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-12-02 22:59:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 335 transitions. [2018-12-02 22:59:18,570 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 335 transitions. Word has length 345 [2018-12-02 22:59:18,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:18,571 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 335 transitions. [2018-12-02 22:59:18,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-12-02 22:59:18,571 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 335 transitions. [2018-12-02 22:59:18,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-12-02 22:59:18,572 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:18,572 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:18,573 INFO L423 AbstractCegarLoop]: === Iteration 38 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:18,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:18,573 INFO L82 PathProgramCache]: Analyzing trace with hash -359461409, now seen corresponding path program 28 times [2018-12-02 22:59:18,573 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:18,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:18,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:18,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:18,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:19,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:19,226 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:19,232 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 22:59:19,265 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 22:59:19,265 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:19,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:19,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:19,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-12-02 22:59:19,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-12-02 22:59:19,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-12-02 22:59:19,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-12-02 22:59:19,826 INFO L87 Difference]: Start difference. First operand 329 states and 335 transitions. Second operand 58 states. [2018-12-02 22:59:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:19,976 INFO L93 Difference]: Finished difference Result 346 states and 353 transitions. [2018-12-02 22:59:19,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-12-02 22:59:19,976 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 352 [2018-12-02 22:59:19,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:19,977 INFO L225 Difference]: With dead ends: 346 [2018-12-02 22:59:19,977 INFO L226 Difference]: Without dead ends: 298 [2018-12-02 22:59:19,978 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 325 SyntacticMatches, 27 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1809 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-12-02 22:59:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-12-02 22:59:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2018-12-02 22:59:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-12-02 22:59:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 300 transitions. [2018-12-02 22:59:19,981 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 300 transitions. Word has length 352 [2018-12-02 22:59:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:19,981 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 300 transitions. [2018-12-02 22:59:19,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-12-02 22:59:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 300 transitions. [2018-12-02 22:59:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-12-02 22:59:19,982 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:19,982 INFO L402 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:19,982 INFO L423 AbstractCegarLoop]: === Iteration 39 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:19,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:19,982 INFO L82 PathProgramCache]: Analyzing trace with hash 199336841, now seen corresponding path program 29 times [2018-12-02 22:59:19,982 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:19,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:19,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:19,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:19,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4846 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-12-02 22:59:20,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:20,665 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:20,671 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 22:59:20,741 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-12-02 22:59:20,741 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:20,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4846 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-12-02 22:59:21,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:21,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-12-02 22:59:21,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-12-02 22:59:21,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-12-02 22:59:21,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-12-02 22:59:21,341 INFO L87 Difference]: Start difference. First operand 297 states and 300 transitions. Second operand 60 states. [2018-12-02 22:59:21,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:21,509 INFO L93 Difference]: Finished difference Result 306 states and 308 transitions. [2018-12-02 22:59:21,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-12-02 22:59:21,509 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 354 [2018-12-02 22:59:21,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:21,510 INFO L225 Difference]: With dead ends: 306 [2018-12-02 22:59:21,510 INFO L226 Difference]: Without dead ends: 258 [2018-12-02 22:59:21,510 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 326 SyntacticMatches, 28 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-12-02 22:59:21,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-12-02 22:59:21,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-12-02 22:59:21,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-12-02 22:59:21,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-12-02 22:59:21,513 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 354 [2018-12-02 22:59:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:21,513 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-12-02 22:59:21,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-12-02 22:59:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-12-02 22:59:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-12-02 22:59:21,514 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 22:59:21,514 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 22:59:21,515 INFO L423 AbstractCegarLoop]: === Iteration 40 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 22:59:21,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:59:21,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1936044257, now seen corresponding path program 30 times [2018-12-02 22:59:21,515 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 22:59:21,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 22:59:21,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:21,515 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 22:59:21,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 22:59:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:59:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5193 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:22,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 22:59:22,230 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 22:59:22,236 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 22:59:22,309 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-12-02 22:59:22,309 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 22:59:22,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 22:59:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5193 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-12-02 22:59:22,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 22:59:22,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-12-02 22:59:22,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-12-02 22:59:22,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-12-02 22:59:22,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-12-02 22:59:22,979 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 62 states. [2018-12-02 22:59:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 22:59:23,114 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-12-02 22:59:23,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-12-02 22:59:23,114 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 366 [2018-12-02 22:59:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 22:59:23,114 INFO L225 Difference]: With dead ends: 258 [2018-12-02 22:59:23,115 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 22:59:23,115 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 337 SyntacticMatches, 29 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2088 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-12-02 22:59:23,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 22:59:23,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 22:59:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 22:59:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 22:59:23,116 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 366 [2018-12-02 22:59:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 22:59:23,116 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 22:59:23,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-12-02 22:59:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 22:59:23,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 22:59:23,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 22:59:23,198 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-02 22:59:23,198 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 22:59:23,198 INFO L448 ceAbstractionStarter]: For program point hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,198 INFO L448 ceAbstractionStarter]: For program point hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,198 INFO L448 ceAbstractionStarter]: For program point hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L444 ceAbstractionStarter]: At program point L22-2(line 22) the Hoare annotation is: (let ((.cse0 (< |hanoi_#in~n| 1))) (and (or (< 30 |hanoi_#in~n|) .cse0 (<= hanoi_~n |hanoi_#in~n|)) (or .cse0 (< 31 |hanoi_#in~n|) (and (<= hanoi_~n 31) (<= 1 hanoi_~n) (not (= 1 hanoi_~n)))))) [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 21) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point L22-3(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point L22-4(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point L22-5(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point L22-6(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point L22-7(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L451 ceAbstractionStarter]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 22:59:23,199 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 22:59:23,199 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 22:59:23,199 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 22:59:23,200 INFO L448 ceAbstractionStarter]: For program point L32(lines 32 36) no Hoare annotation was computed. [2018-12-02 22:59:23,200 INFO L444 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (<= main_~n~0 31) (<= 1 main_~n~0)) [2018-12-02 22:59:23,200 INFO L448 ceAbstractionStarter]: For program point L31-1(line 31) no Hoare annotation was computed. [2018-12-02 22:59:23,200 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2018-12-02 22:59:23,200 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-12-02 22:59:23,200 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 26 37) no Hoare annotation was computed. [2018-12-02 22:59:23,200 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 26 37) no Hoare annotation was computed. [2018-12-02 22:59:23,200 INFO L448 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-12-02 22:59:23,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 10:59:23 BoogieIcfgContainer [2018-12-02 22:59:23,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 22:59:23,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 22:59:23,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 22:59:23,202 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 22:59:23,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:58:58" (3/4) ... [2018-12-02 22:59:23,205 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 22:59:23,209 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 22:59:23,209 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2018-12-02 22:59:23,210 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 22:59:23,212 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-02 22:59:23,212 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-02 22:59:23,212 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 22:59:23,236 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c39596be-dd21-4ac8-b09c-241ef1109afa/bin-2019/uautomizer/witness.graphml [2018-12-02 22:59:23,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 22:59:23,237 INFO L168 Benchmark]: Toolchain (without parser) took 24706.78 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 715.1 MB). Free memory was 954.4 MB in the beginning and 1.6 GB in the end (delta: -650.7 MB). Peak memory consumption was 64.4 MB. Max. memory is 11.5 GB. [2018-12-02 22:59:23,238 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 22:59:23,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.71 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-12-02 22:59:23,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.04 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 22:59:23,238 INFO L168 Benchmark]: Boogie Preprocessor took 9.74 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 22:59:23,238 INFO L168 Benchmark]: RCFGBuilder took 156.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-12-02 22:59:23,239 INFO L168 Benchmark]: TraceAbstraction took 24376.94 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 580.4 MB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -486.8 MB). Peak memory consumption was 93.6 MB. Max. memory is 11.5 GB. [2018-12-02 22:59:23,239 INFO L168 Benchmark]: Witness Printer took 34.18 ms. Allocated memory is still 1.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 22.2 kB). Peak memory consumption was 22.2 kB. Max. memory is 11.5 GB. [2018-12-02 22:59:23,240 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 115.71 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.04 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.74 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 156.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24376.94 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 580.4 MB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -486.8 MB). Peak memory consumption was 93.6 MB. Max. memory is 11.5 GB. * Witness Printer took 34.18 ms. Allocated memory is still 1.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 22.2 kB). Peak memory consumption was 22.2 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 6 error locations. SAFE Result, 24.3s OverallTime, 40 OverallIterations, 32 TraceHistogramMax, 4.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1107 SDtfs, 2516 SDslu, 13085 SDs, 0 SdLazy, 6356 SolverSat, 285 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7871 GetRequests, 6286 SyntacticMatches, 438 SemanticMatches, 1147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23754 ImplicationChecksByTransitivity, 16.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=387occurred in iteration=33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 40 MinimizatonAttempts, 215 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 23 PreInvPairs, 23 NumberOfFragments, 45 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 323 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 16.7s InterpolantComputationTime, 13452 NumberOfCodeBlocks, 13342 NumberOfCodeBlocksAsserted, 386 NumberOfCheckSat, 13376 ConstructedInterpolants, 0 QuantifiedInterpolants, 7318304 SizeOfPredicates, 60 NumberOfNonLiveVariables, 11413 ConjunctsInSsa, 1092 ConjunctsInUnsatCore, 76 InterpolantComputations, 4 PerfectInterpolantSequences, 73013/135702 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...