./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/recHanoi02-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi02-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:09:03,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:09:03,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:09:03,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:09:03,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:09:03,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:09:03,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:09:03,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:09:03,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:09:03,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:09:03,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:09:03,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:09:03,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:09:03,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:09:03,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:09:03,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:09:03,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:09:03,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:09:03,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:09:03,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:09:03,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:09:03,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:09:03,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:09:03,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:09:03,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:09:03,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:09:03,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:09:03,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:09:03,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:09:03,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:09:03,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:09:03,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:09:03,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:09:03,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:09:03,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:09:03,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:09:03,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:09:03,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:09:03,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:09:03,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:09:03,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:09:03,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-19 22:09:03,549 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:09:03,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:09:03,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:09:03,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:09:03,552 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:09:03,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:09:03,552 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:09:03,553 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:09:03,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:09:03,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:09:03,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:09:03,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:09:03,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:09:03,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:09:03,556 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-19 22:09:03,556 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:09:03,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:09:03,556 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:09:03,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:09:03,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:09:03,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:09:03,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:09:03,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:09:03,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:09:03,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:09:03,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:09:03,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:09:03,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:09:03,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:09:03,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:09:03,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 [2019-11-19 22:09:03,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:09:03,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:09:03,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:09:03,806 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:09:03,807 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:09:03,808 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/../../sv-benchmarks/c/recursive/recHanoi02-2.c [2019-11-19 22:09:03,883 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/data/070adfe1f/cb3ae7b5a56b4e259d577cfe9c49e395/FLAG6e5f87575 [2019-11-19 22:09:04,306 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:09:04,306 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/sv-benchmarks/c/recursive/recHanoi02-2.c [2019-11-19 22:09:04,314 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/data/070adfe1f/cb3ae7b5a56b4e259d577cfe9c49e395/FLAG6e5f87575 [2019-11-19 22:09:04,701 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/data/070adfe1f/cb3ae7b5a56b4e259d577cfe9c49e395 [2019-11-19 22:09:04,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:09:04,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:09:04,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:09:04,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:09:04,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:09:04,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:09:04" (1/1) ... [2019-11-19 22:09:04,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dfd83e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:04, skipping insertion in model container [2019-11-19 22:09:04,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:09:04" (1/1) ... [2019-11-19 22:09:04,728 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:09:04,747 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:09:04,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:09:04,919 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:09:05,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:09:05,040 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:09:05,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05 WrapperNode [2019-11-19 22:09:05,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:09:05,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:09:05,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:09:05,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:09:05,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05" (1/1) ... [2019-11-19 22:09:05,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05" (1/1) ... [2019-11-19 22:09:05,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:09:05,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:09:05,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:09:05,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:09:05,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05" (1/1) ... [2019-11-19 22:09:05,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05" (1/1) ... [2019-11-19 22:09:05,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05" (1/1) ... [2019-11-19 22:09:05,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05" (1/1) ... [2019-11-19 22:09:05,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05" (1/1) ... [2019-11-19 22:09:05,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05" (1/1) ... [2019-11-19 22:09:05,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05" (1/1) ... [2019-11-19 22:09:05,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:09:05,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:09:05,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:09:05,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:09:05,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:09:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2019-11-19 22:09:05,181 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2019-11-19 22:09:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:09:05,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:09:05,411 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:09:05,411 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 22:09:05,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:09:05 BoogieIcfgContainer [2019-11-19 22:09:05,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:09:05,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:09:05,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:09:05,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:09:05,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:09:04" (1/3) ... [2019-11-19 22:09:05,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764a7f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:09:05, skipping insertion in model container [2019-11-19 22:09:05,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:05" (2/3) ... [2019-11-19 22:09:05,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764a7f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:09:05, skipping insertion in model container [2019-11-19 22:09:05,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:09:05" (3/3) ... [2019-11-19 22:09:05,421 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2019-11-19 22:09:05,432 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:09:05,439 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-19 22:09:05,452 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-19 22:09:05,478 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:09:05,478 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:09:05,479 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:09:05,479 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:09:05,479 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:09:05,479 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:09:05,479 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:09:05,480 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:09:05,500 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-19 22:09:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-19 22:09:05,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:05,507 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-19 22:09:05,507 INFO L410 AbstractCegarLoop]: === Iteration 1 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:05,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:05,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1513948958, now seen corresponding path program 1 times [2019-11-19 22:09:05,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:05,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147433806] [2019-11-19 22:09:05,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:05,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147433806] [2019-11-19 22:09:05,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:09:05,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 22:09:05,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904052572] [2019-11-19 22:09:05,718 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:09:05,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:05,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:09:05,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:09:05,733 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2019-11-19 22:09:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:05,855 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-11-19 22:09:05,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:09:05,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-19 22:09:05,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:05,863 INFO L225 Difference]: With dead ends: 33 [2019-11-19 22:09:05,864 INFO L226 Difference]: Without dead ends: 20 [2019-11-19 22:09:05,867 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:09:05,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-19 22:09:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-19 22:09:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-19 22:09:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-11-19 22:09:05,905 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2019-11-19 22:09:05,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:05,906 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-11-19 22:09:05,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:09:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-11-19 22:09:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 22:09:05,907 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:05,907 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:09:05,907 INFO L410 AbstractCegarLoop]: === Iteration 2 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash -312222520, now seen corresponding path program 1 times [2019-11-19 22:09:05,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:05,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954605582] [2019-11-19 22:09:05,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:05,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954605582] [2019-11-19 22:09:05,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:09:05,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 22:09:05,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566230805] [2019-11-19 22:09:05,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:09:05,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:05,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:09:05,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:09:05,970 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2019-11-19 22:09:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:06,042 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-11-19 22:09:06,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:09:06,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-19 22:09:06,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:06,045 INFO L225 Difference]: With dead ends: 39 [2019-11-19 22:09:06,045 INFO L226 Difference]: Without dead ends: 36 [2019-11-19 22:09:06,046 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:09:06,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-19 22:09:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-11-19 22:09:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-19 22:09:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-19 22:09:06,058 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2019-11-19 22:09:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:06,059 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-19 22:09:06,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:09:06,059 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-19 22:09:06,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 22:09:06,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:06,061 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-19 22:09:06,061 INFO L410 AbstractCegarLoop]: === Iteration 3 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:06,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:06,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1144431293, now seen corresponding path program 1 times [2019-11-19 22:09:06,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:06,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485281708] [2019-11-19 22:09:06,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:06,150 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485281708] [2019-11-19 22:09:06,150 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493410512] [2019-11-19 22:09:06,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:06,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 22:09:06,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:06,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:06,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-19 22:09:06,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040343644] [2019-11-19 22:09:06,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 22:09:06,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:06,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 22:09:06,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-19 22:09:06,254 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 7 states. [2019-11-19 22:09:06,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:06,421 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2019-11-19 22:09:06,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 22:09:06,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-19 22:09:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:06,425 INFO L225 Difference]: With dead ends: 55 [2019-11-19 22:09:06,425 INFO L226 Difference]: Without dead ends: 54 [2019-11-19 22:09:06,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:09:06,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-19 22:09:06,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2019-11-19 22:09:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-19 22:09:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2019-11-19 22:09:06,450 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 12 [2019-11-19 22:09:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:06,450 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2019-11-19 22:09:06,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 22:09:06,451 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2019-11-19 22:09:06,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-19 22:09:06,452 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:06,452 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:09:06,664 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:06,665 INFO L410 AbstractCegarLoop]: === Iteration 4 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash -287349001, now seen corresponding path program 1 times [2019-11-19 22:09:06,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:06,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278799673] [2019-11-19 22:09:06,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-19 22:09:06,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278799673] [2019-11-19 22:09:06,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:09:06,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 22:09:06,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411629909] [2019-11-19 22:09:06,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:09:06,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:06,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:09:06,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:09:06,741 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 4 states. [2019-11-19 22:09:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:06,795 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2019-11-19 22:09:06,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:09:06,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-19 22:09:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:06,798 INFO L225 Difference]: With dead ends: 65 [2019-11-19 22:09:06,798 INFO L226 Difference]: Without dead ends: 54 [2019-11-19 22:09:06,799 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:09:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-19 22:09:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-19 22:09:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-19 22:09:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2019-11-19 22:09:06,810 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 14 [2019-11-19 22:09:06,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:06,811 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2019-11-19 22:09:06,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:09:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2019-11-19 22:09:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 22:09:06,812 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:06,812 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2019-11-19 22:09:06,813 INFO L410 AbstractCegarLoop]: === Iteration 5 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:06,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:06,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1656222120, now seen corresponding path program 2 times [2019-11-19 22:09:06,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:06,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014852912] [2019-11-19 22:09:06,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:06,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014852912] [2019-11-19 22:09:06,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161908593] [2019-11-19 22:09:06,923 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:06,956 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:09:06,956 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:06,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:09:06,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:06,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:06,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-19 22:09:06,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896116890] [2019-11-19 22:09:06,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-19 22:09:06,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:06,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 22:09:06,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-19 22:09:06,969 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states. [2019-11-19 22:09:07,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:07,150 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2019-11-19 22:09:07,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-19 22:09:07,151 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-11-19 22:09:07,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:07,152 INFO L225 Difference]: With dead ends: 86 [2019-11-19 22:09:07,153 INFO L226 Difference]: Without dead ends: 85 [2019-11-19 22:09:07,153 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-19 22:09:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-19 22:09:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2019-11-19 22:09:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-19 22:09:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2019-11-19 22:09:07,165 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 17 [2019-11-19 22:09:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:07,165 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2019-11-19 22:09:07,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-19 22:09:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2019-11-19 22:09:07,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-19 22:09:07,166 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:07,167 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1] [2019-11-19 22:09:07,372 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:07,372 INFO L410 AbstractCegarLoop]: === Iteration 6 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:07,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:07,373 INFO L82 PathProgramCache]: Analyzing trace with hash 438260835, now seen corresponding path program 3 times [2019-11-19 22:09:07,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:07,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943965325] [2019-11-19 22:09:07,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:07,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943965325] [2019-11-19 22:09:07,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673241077] [2019-11-19 22:09:07,504 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:07,540 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-19 22:09:07,540 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:07,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-19 22:09:07,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:07,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:07,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-19 22:09:07,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914918615] [2019-11-19 22:09:07,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-19 22:09:07,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:07,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-19 22:09:07,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:09:07,566 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand 11 states. [2019-11-19 22:09:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:07,818 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2019-11-19 22:09:07,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 22:09:07,819 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2019-11-19 22:09:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:07,821 INFO L225 Difference]: With dead ends: 109 [2019-11-19 22:09:07,821 INFO L226 Difference]: Without dead ends: 108 [2019-11-19 22:09:07,822 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2019-11-19 22:09:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-19 22:09:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2019-11-19 22:09:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-19 22:09:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2019-11-19 22:09:07,837 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 22 [2019-11-19 22:09:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:07,837 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2019-11-19 22:09:07,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-19 22:09:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2019-11-19 22:09:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-19 22:09:07,839 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:07,840 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2019-11-19 22:09:08,044 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:08,045 INFO L410 AbstractCegarLoop]: === Iteration 7 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:08,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:08,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1696558728, now seen corresponding path program 4 times [2019-11-19 22:09:08,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:08,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010726121] [2019-11-19 22:09:08,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:08,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010726121] [2019-11-19 22:09:08,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110424692] [2019-11-19 22:09:08,240 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:08,272 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 22:09:08,272 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:08,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:09:08,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:08,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:08,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-19 22:09:08,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636053950] [2019-11-19 22:09:08,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-19 22:09:08,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:08,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-19 22:09:08,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-19 22:09:08,290 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand 13 states. [2019-11-19 22:09:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:08,582 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2019-11-19 22:09:08,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-19 22:09:08,585 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2019-11-19 22:09:08,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:08,587 INFO L225 Difference]: With dead ends: 132 [2019-11-19 22:09:08,587 INFO L226 Difference]: Without dead ends: 131 [2019-11-19 22:09:08,588 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2019-11-19 22:09:08,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-11-19 22:09:08,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2019-11-19 22:09:08,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-19 22:09:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 136 transitions. [2019-11-19 22:09:08,612 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 136 transitions. Word has length 27 [2019-11-19 22:09:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:08,613 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 136 transitions. [2019-11-19 22:09:08,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-19 22:09:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 136 transitions. [2019-11-19 22:09:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-19 22:09:08,614 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:08,615 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:09:08,818 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:08,819 INFO L410 AbstractCegarLoop]: === Iteration 8 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:08,819 INFO L82 PathProgramCache]: Analyzing trace with hash -563967927, now seen corresponding path program 1 times [2019-11-19 22:09:08,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:08,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331562965] [2019-11-19 22:09:08,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-19 22:09:08,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331562965] [2019-11-19 22:09:08,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277693761] [2019-11-19 22:09:08,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:08,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:09:08,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-19 22:09:09,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:09,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-19 22:09:09,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628229400] [2019-11-19 22:09:09,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 22:09:09,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:09,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 22:09:09,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:09:09,019 INFO L87 Difference]: Start difference. First operand 111 states and 136 transitions. Second operand 8 states. [2019-11-19 22:09:09,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:09,076 INFO L93 Difference]: Finished difference Result 153 states and 200 transitions. [2019-11-19 22:09:09,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 22:09:09,077 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2019-11-19 22:09:09,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:09,079 INFO L225 Difference]: With dead ends: 153 [2019-11-19 22:09:09,079 INFO L226 Difference]: Without dead ends: 151 [2019-11-19 22:09:09,080 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:09:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-19 22:09:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2019-11-19 22:09:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-11-19 22:09:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 177 transitions. [2019-11-19 22:09:09,096 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 177 transitions. Word has length 26 [2019-11-19 22:09:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:09,097 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 177 transitions. [2019-11-19 22:09:09,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 22:09:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 177 transitions. [2019-11-19 22:09:09,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-19 22:09:09,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:09,098 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:09:09,304 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:09,304 INFO L410 AbstractCegarLoop]: === Iteration 9 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:09,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:09,305 INFO L82 PathProgramCache]: Analyzing trace with hash -303136509, now seen corresponding path program 1 times [2019-11-19 22:09:09,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:09,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423635889] [2019-11-19 22:09:09,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-19 22:09:09,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423635889] [2019-11-19 22:09:09,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055106326] [2019-11-19 22:09:09,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:09,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:09:09,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-19 22:09:09,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-19 22:09:09,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2019-11-19 22:09:09,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698652914] [2019-11-19 22:09:09,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 22:09:09,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:09,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 22:09:09,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:09:09,458 INFO L87 Difference]: Start difference. First operand 145 states and 177 transitions. Second operand 6 states. [2019-11-19 22:09:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:09,494 INFO L93 Difference]: Finished difference Result 145 states and 177 transitions. [2019-11-19 22:09:09,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:09:09,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-11-19 22:09:09,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:09,497 INFO L225 Difference]: With dead ends: 145 [2019-11-19 22:09:09,497 INFO L226 Difference]: Without dead ends: 129 [2019-11-19 22:09:09,498 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:09:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-11-19 22:09:09,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2019-11-19 22:09:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-11-19 22:09:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2019-11-19 22:09:09,510 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 27 [2019-11-19 22:09:09,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:09,511 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2019-11-19 22:09:09,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 22:09:09,511 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2019-11-19 22:09:09,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-19 22:09:09,512 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:09,512 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1] [2019-11-19 22:09:09,716 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:09,716 INFO L410 AbstractCegarLoop]: === Iteration 10 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:09,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:09,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1757224061, now seen corresponding path program 5 times [2019-11-19 22:09:09,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:09,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678940938] [2019-11-19 22:09:09,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:09,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678940938] [2019-11-19 22:09:09,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658853521] [2019-11-19 22:09:09,925 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:09,992 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-19 22:09:09,993 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:09,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-19 22:09:09,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:10,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:10,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-19 22:09:10,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16609145] [2019-11-19 22:09:10,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-19 22:09:10,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:10,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-19 22:09:10,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2019-11-19 22:09:10,016 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand 15 states. [2019-11-19 22:09:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:10,332 INFO L93 Difference]: Finished difference Result 167 states and 173 transitions. [2019-11-19 22:09:10,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-19 22:09:10,333 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2019-11-19 22:09:10,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:10,335 INFO L225 Difference]: With dead ends: 167 [2019-11-19 22:09:10,335 INFO L226 Difference]: Without dead ends: 166 [2019-11-19 22:09:10,336 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2019-11-19 22:09:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-11-19 22:09:10,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2019-11-19 22:09:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-19 22:09:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2019-11-19 22:09:10,346 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 32 [2019-11-19 22:09:10,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:10,346 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2019-11-19 22:09:10,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-19 22:09:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2019-11-19 22:09:10,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-19 22:09:10,348 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:10,348 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2019-11-19 22:09:10,552 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:10,561 INFO L410 AbstractCegarLoop]: === Iteration 11 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:10,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:10,561 INFO L82 PathProgramCache]: Analyzing trace with hash -512208024, now seen corresponding path program 6 times [2019-11-19 22:09:10,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:10,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086616129] [2019-11-19 22:09:10,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:09:10,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086616129] [2019-11-19 22:09:10,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314706003] [2019-11-19 22:09:10,794 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:10,842 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-19 22:09:10,842 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:10,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-19 22:09:10,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-19 22:09:10,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:10,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 17 [2019-11-19 22:09:10,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388696301] [2019-11-19 22:09:10,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-19 22:09:10,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:10,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-19 22:09:10,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-11-19 22:09:10,917 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand 18 states. [2019-11-19 22:09:10,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:10,979 INFO L93 Difference]: Finished difference Result 154 states and 172 transitions. [2019-11-19 22:09:10,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:09:10,983 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 37 [2019-11-19 22:09:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:10,985 INFO L225 Difference]: With dead ends: 154 [2019-11-19 22:09:10,985 INFO L226 Difference]: Without dead ends: 153 [2019-11-19 22:09:10,986 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2019-11-19 22:09:10,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-11-19 22:09:10,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-11-19 22:09:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-19 22:09:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 171 transitions. [2019-11-19 22:09:11,005 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 171 transitions. Word has length 37 [2019-11-19 22:09:11,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:11,005 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 171 transitions. [2019-11-19 22:09:11,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-19 22:09:11,006 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 171 transitions. [2019-11-19 22:09:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-19 22:09:11,007 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:11,008 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-19 22:09:11,211 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:11,212 INFO L410 AbstractCegarLoop]: === Iteration 12 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:11,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:11,212 INFO L82 PathProgramCache]: Analyzing trace with hash 867149367, now seen corresponding path program 2 times [2019-11-19 22:09:11,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:11,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692218565] [2019-11-19 22:09:11,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-19 22:09:11,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692218565] [2019-11-19 22:09:11,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538567528] [2019-11-19 22:09:11,325 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:11,361 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:09:11,361 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:11,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:09:11,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-19 22:09:11,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:11,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-11-19 22:09:11,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854533368] [2019-11-19 22:09:11,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:09:11,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:11,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:09:11,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:09:11,416 INFO L87 Difference]: Start difference. First operand 153 states and 171 transitions. Second operand 10 states. [2019-11-19 22:09:11,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:11,483 INFO L93 Difference]: Finished difference Result 207 states and 237 transitions. [2019-11-19 22:09:11,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 22:09:11,483 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-19 22:09:11,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:11,485 INFO L225 Difference]: With dead ends: 207 [2019-11-19 22:09:11,485 INFO L226 Difference]: Without dead ends: 185 [2019-11-19 22:09:11,486 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:09:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-11-19 22:09:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 179. [2019-11-19 22:09:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2019-11-19 22:09:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2019-11-19 22:09:11,503 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 38 [2019-11-19 22:09:11,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:11,503 INFO L462 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2019-11-19 22:09:11,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:09:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2019-11-19 22:09:11,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-19 22:09:11,512 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:11,512 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2019-11-19 22:09:11,716 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:11,719 INFO L410 AbstractCegarLoop]: === Iteration 13 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:11,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1066180599, now seen corresponding path program 3 times [2019-11-19 22:09:11,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:11,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736871230] [2019-11-19 22:09:11,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-19 22:09:11,897 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736871230] [2019-11-19 22:09:11,897 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841431940] [2019-11-19 22:09:11,898 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:11,948 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-19 22:09:11,948 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:11,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 22:09:11,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-19 22:09:12,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:12,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-11-19 22:09:12,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305644459] [2019-11-19 22:09:12,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-19 22:09:12,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:12,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-19 22:09:12,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-19 22:09:12,006 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand 12 states. [2019-11-19 22:09:12,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:12,055 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2019-11-19 22:09:12,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 22:09:12,056 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-11-19 22:09:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:12,057 INFO L225 Difference]: With dead ends: 233 [2019-11-19 22:09:12,057 INFO L226 Difference]: Without dead ends: 204 [2019-11-19 22:09:12,058 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-19 22:09:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-11-19 22:09:12,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2019-11-19 22:09:12,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-11-19 22:09:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 216 transitions. [2019-11-19 22:09:12,070 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 216 transitions. Word has length 50 [2019-11-19 22:09:12,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:12,070 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 216 transitions. [2019-11-19 22:09:12,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-19 22:09:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 216 transitions. [2019-11-19 22:09:12,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-19 22:09:12,072 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:12,072 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2019-11-19 22:09:12,280 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:12,281 INFO L410 AbstractCegarLoop]: === Iteration 14 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:12,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:12,281 INFO L82 PathProgramCache]: Analyzing trace with hash -158018185, now seen corresponding path program 4 times [2019-11-19 22:09:12,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:12,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886828004] [2019-11-19 22:09:12,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-19 22:09:12,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886828004] [2019-11-19 22:09:12,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655013529] [2019-11-19 22:09:12,507 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:12,552 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 22:09:12,552 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:12,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-19 22:09:12,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-19 22:09:12,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:12,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-11-19 22:09:12,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136617395] [2019-11-19 22:09:12,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-19 22:09:12,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:12,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-19 22:09:12,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-11-19 22:09:12,675 INFO L87 Difference]: Start difference. First operand 198 states and 216 transitions. Second operand 14 states. [2019-11-19 22:09:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:12,753 INFO L93 Difference]: Finished difference Result 252 states and 282 transitions. [2019-11-19 22:09:12,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-19 22:09:12,753 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2019-11-19 22:09:12,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:12,755 INFO L225 Difference]: With dead ends: 252 [2019-11-19 22:09:12,756 INFO L226 Difference]: Without dead ends: 216 [2019-11-19 22:09:12,758 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-11-19 22:09:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2019-11-19 22:09:12,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2019-11-19 22:09:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-11-19 22:09:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 228 transitions. [2019-11-19 22:09:12,775 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 228 transitions. Word has length 62 [2019-11-19 22:09:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:12,775 INFO L462 AbstractCegarLoop]: Abstraction has 210 states and 228 transitions. [2019-11-19 22:09:12,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-19 22:09:12,776 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 228 transitions. [2019-11-19 22:09:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-19 22:09:12,778 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:12,779 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2019-11-19 22:09:12,982 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:12,983 INFO L410 AbstractCegarLoop]: === Iteration 15 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:12,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:12,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1955313719, now seen corresponding path program 5 times [2019-11-19 22:09:12,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:12,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692766248] [2019-11-19 22:09:12,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-19 22:09:13,263 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692766248] [2019-11-19 22:09:13,263 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476087128] [2019-11-19 22:09:13,263 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:13,315 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-19 22:09:13,315 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:13,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-19 22:09:13,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-19 22:09:13,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:13,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-11-19 22:09:13,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384456210] [2019-11-19 22:09:13,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-19 22:09:13,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:13,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-19 22:09:13,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-11-19 22:09:13,429 INFO L87 Difference]: Start difference. First operand 210 states and 228 transitions. Second operand 16 states. [2019-11-19 22:09:13,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:13,531 INFO L93 Difference]: Finished difference Result 264 states and 294 transitions. [2019-11-19 22:09:13,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 22:09:13,532 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2019-11-19 22:09:13,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:13,534 INFO L225 Difference]: With dead ends: 264 [2019-11-19 22:09:13,534 INFO L226 Difference]: Without dead ends: 223 [2019-11-19 22:09:13,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-11-19 22:09:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2019-11-19 22:09:13,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2019-11-19 22:09:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2019-11-19 22:09:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 235 transitions. [2019-11-19 22:09:13,552 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 235 transitions. Word has length 74 [2019-11-19 22:09:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:13,553 INFO L462 AbstractCegarLoop]: Abstraction has 217 states and 235 transitions. [2019-11-19 22:09:13,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-19 22:09:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 235 transitions. [2019-11-19 22:09:13,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-19 22:09:13,555 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:13,555 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2019-11-19 22:09:13,760 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:13,761 INFO L410 AbstractCegarLoop]: === Iteration 16 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:13,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:13,761 INFO L82 PathProgramCache]: Analyzing trace with hash -330632009, now seen corresponding path program 6 times [2019-11-19 22:09:13,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:13,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945326931] [2019-11-19 22:09:13,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-11-19 22:09:14,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945326931] [2019-11-19 22:09:14,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742314932] [2019-11-19 22:09:14,074 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:14,126 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-11-19 22:09:14,126 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:14,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-19 22:09:14,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-11-19 22:09:14,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:14,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-11-19 22:09:14,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069203468] [2019-11-19 22:09:14,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-19 22:09:14,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:14,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-19 22:09:14,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-11-19 22:09:14,285 INFO L87 Difference]: Start difference. First operand 217 states and 235 transitions. Second operand 18 states. [2019-11-19 22:09:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:14,378 INFO L93 Difference]: Finished difference Result 271 states and 301 transitions. [2019-11-19 22:09:14,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-19 22:09:14,379 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 86 [2019-11-19 22:09:14,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:14,381 INFO L225 Difference]: With dead ends: 271 [2019-11-19 22:09:14,381 INFO L226 Difference]: Without dead ends: 230 [2019-11-19 22:09:14,382 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 92 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-11-19 22:09:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2019-11-19 22:09:14,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2019-11-19 22:09:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-11-19 22:09:14,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 242 transitions. [2019-11-19 22:09:14,395 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 242 transitions. Word has length 86 [2019-11-19 22:09:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:14,395 INFO L462 AbstractCegarLoop]: Abstraction has 224 states and 242 transitions. [2019-11-19 22:09:14,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-19 22:09:14,396 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 242 transitions. [2019-11-19 22:09:14,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-19 22:09:14,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:14,398 INFO L410 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2019-11-19 22:09:14,602 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:14,602 INFO L410 AbstractCegarLoop]: === Iteration 17 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:14,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:14,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1066952498, now seen corresponding path program 7 times [2019-11-19 22:09:14,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:14,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622979502] [2019-11-19 22:09:14,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2019-11-19 22:09:14,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622979502] [2019-11-19 22:09:14,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902409050] [2019-11-19 22:09:14,979 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:15,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-19 22:09:15,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2019-11-19 22:09:15,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:15,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-11-19 22:09:15,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970690291] [2019-11-19 22:09:15,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-19 22:09:15,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:15,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-19 22:09:15,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-11-19 22:09:15,208 INFO L87 Difference]: Start difference. First operand 224 states and 242 transitions. Second operand 20 states. [2019-11-19 22:09:15,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:15,316 INFO L93 Difference]: Finished difference Result 278 states and 308 transitions. [2019-11-19 22:09:15,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-19 22:09:15,317 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 133 [2019-11-19 22:09:15,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:15,319 INFO L225 Difference]: With dead ends: 278 [2019-11-19 22:09:15,319 INFO L226 Difference]: Without dead ends: 237 [2019-11-19 22:09:15,320 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 140 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-11-19 22:09:15,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2019-11-19 22:09:15,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2019-11-19 22:09:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2019-11-19 22:09:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 249 transitions. [2019-11-19 22:09:15,331 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 249 transitions. Word has length 133 [2019-11-19 22:09:15,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:15,332 INFO L462 AbstractCegarLoop]: Abstraction has 231 states and 249 transitions. [2019-11-19 22:09:15,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-19 22:09:15,332 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 249 transitions. [2019-11-19 22:09:15,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-19 22:09:15,334 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:15,335 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2019-11-19 22:09:15,538 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:15,539 INFO L410 AbstractCegarLoop]: === Iteration 18 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:15,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1888355319, now seen corresponding path program 8 times [2019-11-19 22:09:15,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:15,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810878966] [2019-11-19 22:09:15,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-11-19 22:09:15,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810878966] [2019-11-19 22:09:15,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211508041] [2019-11-19 22:09:15,968 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:16,011 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:09:16,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:16,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-19 22:09:16,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-11-19 22:09:16,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:16,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-11-19 22:09:16,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797512251] [2019-11-19 22:09:16,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-19 22:09:16,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:16,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-19 22:09:16,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-11-19 22:09:16,195 INFO L87 Difference]: Start difference. First operand 231 states and 249 transitions. Second operand 22 states. [2019-11-19 22:09:16,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:16,337 INFO L93 Difference]: Finished difference Result 285 states and 315 transitions. [2019-11-19 22:09:16,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-19 22:09:16,338 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 110 [2019-11-19 22:09:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:16,340 INFO L225 Difference]: With dead ends: 285 [2019-11-19 22:09:16,340 INFO L226 Difference]: Without dead ends: 244 [2019-11-19 22:09:16,341 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 118 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-11-19 22:09:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-11-19 22:09:16,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 238. [2019-11-19 22:09:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-11-19 22:09:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 256 transitions. [2019-11-19 22:09:16,364 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 256 transitions. Word has length 110 [2019-11-19 22:09:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:16,364 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 256 transitions. [2019-11-19 22:09:16,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-19 22:09:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 256 transitions. [2019-11-19 22:09:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-19 22:09:16,368 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:16,368 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2019-11-19 22:09:16,571 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:16,572 INFO L410 AbstractCegarLoop]: === Iteration 19 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:16,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1336522935, now seen corresponding path program 9 times [2019-11-19 22:09:16,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:16,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400944090] [2019-11-19 22:09:16,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2019-11-19 22:09:17,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400944090] [2019-11-19 22:09:17,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833829816] [2019-11-19 22:09:17,068 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:17,132 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-19 22:09:17,132 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:17,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-19 22:09:17,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2019-11-19 22:09:17,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:17,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-11-19 22:09:17,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748574990] [2019-11-19 22:09:17,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-19 22:09:17,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:17,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-19 22:09:17,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-11-19 22:09:17,328 INFO L87 Difference]: Start difference. First operand 238 states and 256 transitions. Second operand 24 states. [2019-11-19 22:09:17,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:17,458 INFO L93 Difference]: Finished difference Result 292 states and 322 transitions. [2019-11-19 22:09:17,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-19 22:09:17,458 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 122 [2019-11-19 22:09:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:17,460 INFO L225 Difference]: With dead ends: 292 [2019-11-19 22:09:17,460 INFO L226 Difference]: Without dead ends: 251 [2019-11-19 22:09:17,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 131 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-11-19 22:09:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2019-11-19 22:09:17,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 245. [2019-11-19 22:09:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-11-19 22:09:17,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 263 transitions. [2019-11-19 22:09:17,475 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 263 transitions. Word has length 122 [2019-11-19 22:09:17,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:17,475 INFO L462 AbstractCegarLoop]: Abstraction has 245 states and 263 transitions. [2019-11-19 22:09:17,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-19 22:09:17,475 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 263 transitions. [2019-11-19 22:09:17,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-19 22:09:17,479 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:17,479 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2019-11-19 22:09:17,691 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:17,691 INFO L410 AbstractCegarLoop]: === Iteration 20 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:17,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:17,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1176109879, now seen corresponding path program 10 times [2019-11-19 22:09:17,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:17,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234489231] [2019-11-19 22:09:17,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2019-11-19 22:09:18,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234489231] [2019-11-19 22:09:18,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789075828] [2019-11-19 22:09:18,305 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:18,395 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 22:09:18,395 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:18,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-19 22:09:18,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2019-11-19 22:09:18,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:18,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-11-19 22:09:18,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862263923] [2019-11-19 22:09:18,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-19 22:09:18,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:18,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-19 22:09:18,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-11-19 22:09:18,633 INFO L87 Difference]: Start difference. First operand 245 states and 263 transitions. Second operand 26 states. [2019-11-19 22:09:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:18,745 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2019-11-19 22:09:18,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-19 22:09:18,748 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 134 [2019-11-19 22:09:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:18,750 INFO L225 Difference]: With dead ends: 299 [2019-11-19 22:09:18,750 INFO L226 Difference]: Without dead ends: 258 [2019-11-19 22:09:18,751 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 144 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-11-19 22:09:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2019-11-19 22:09:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 252. [2019-11-19 22:09:18,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2019-11-19 22:09:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 270 transitions. [2019-11-19 22:09:18,762 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 270 transitions. Word has length 134 [2019-11-19 22:09:18,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:18,762 INFO L462 AbstractCegarLoop]: Abstraction has 252 states and 270 transitions. [2019-11-19 22:09:18,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-19 22:09:18,763 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 270 transitions. [2019-11-19 22:09:18,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-19 22:09:18,765 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:18,765 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1] [2019-11-19 22:09:18,968 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:18,969 INFO L410 AbstractCegarLoop]: === Iteration 21 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:18,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1656708873, now seen corresponding path program 11 times [2019-11-19 22:09:18,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:18,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232730931] [2019-11-19 22:09:18,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2019-11-19 22:09:19,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232730931] [2019-11-19 22:09:19,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691480840] [2019-11-19 22:09:19,663 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:19,736 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-11-19 22:09:19,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:19,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-19 22:09:19,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2019-11-19 22:09:20,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:20,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-11-19 22:09:20,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309932559] [2019-11-19 22:09:20,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-19 22:09:20,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:20,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-19 22:09:20,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2019-11-19 22:09:20,041 INFO L87 Difference]: Start difference. First operand 252 states and 270 transitions. Second operand 28 states. [2019-11-19 22:09:20,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:20,198 INFO L93 Difference]: Finished difference Result 306 states and 336 transitions. [2019-11-19 22:09:20,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-19 22:09:20,198 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 146 [2019-11-19 22:09:20,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:20,200 INFO L225 Difference]: With dead ends: 306 [2019-11-19 22:09:20,200 INFO L226 Difference]: Without dead ends: 265 [2019-11-19 22:09:20,201 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 157 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2019-11-19 22:09:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-11-19 22:09:20,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2019-11-19 22:09:20,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-11-19 22:09:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 277 transitions. [2019-11-19 22:09:20,218 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 277 transitions. Word has length 146 [2019-11-19 22:09:20,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:20,219 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 277 transitions. [2019-11-19 22:09:20,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-19 22:09:20,219 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 277 transitions. [2019-11-19 22:09:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-19 22:09:20,222 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:20,222 INFO L410 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2019-11-19 22:09:20,425 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:20,426 INFO L410 AbstractCegarLoop]: === Iteration 22 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:20,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:20,427 INFO L82 PathProgramCache]: Analyzing trace with hash -2039869892, now seen corresponding path program 12 times [2019-11-19 22:09:20,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:20,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250676730] [2019-11-19 22:09:20,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-19 22:09:21,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250676730] [2019-11-19 22:09:21,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633108984] [2019-11-19 22:09:21,311 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:21,382 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2019-11-19 22:09:21,382 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:21,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-19 22:09:21,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-19 22:09:21,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:21,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-11-19 22:09:21,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295649036] [2019-11-19 22:09:21,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-19 22:09:21,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:21,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-19 22:09:21,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2019-11-19 22:09:21,702 INFO L87 Difference]: Start difference. First operand 259 states and 277 transitions. Second operand 30 states. [2019-11-19 22:09:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:21,879 INFO L93 Difference]: Finished difference Result 313 states and 343 transitions. [2019-11-19 22:09:21,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-19 22:09:21,882 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 193 [2019-11-19 22:09:21,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:21,884 INFO L225 Difference]: With dead ends: 313 [2019-11-19 22:09:21,884 INFO L226 Difference]: Without dead ends: 272 [2019-11-19 22:09:21,885 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 205 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2019-11-19 22:09:21,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-11-19 22:09:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 266. [2019-11-19 22:09:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2019-11-19 22:09:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 284 transitions. [2019-11-19 22:09:21,901 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 284 transitions. Word has length 193 [2019-11-19 22:09:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:21,902 INFO L462 AbstractCegarLoop]: Abstraction has 266 states and 284 transitions. [2019-11-19 22:09:21,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-19 22:09:21,902 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 284 transitions. [2019-11-19 22:09:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-19 22:09:21,907 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:21,907 INFO L410 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1] [2019-11-19 22:09:22,110 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:22,110 INFO L410 AbstractCegarLoop]: === Iteration 23 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:22,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:22,111 INFO L82 PathProgramCache]: Analyzing trace with hash 350954254, now seen corresponding path program 13 times [2019-11-19 22:09:22,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:22,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783407974] [2019-11-19 22:09:22,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2019-11-19 22:09:23,092 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783407974] [2019-11-19 22:09:23,092 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219358198] [2019-11-19 22:09:23,092 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:23,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-19 22:09:23,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2019-11-19 22:09:23,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:23,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-11-19 22:09:23,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852170682] [2019-11-19 22:09:23,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-11-19 22:09:23,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:23,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-11-19 22:09:23,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2019-11-19 22:09:23,556 INFO L87 Difference]: Start difference. First operand 266 states and 284 transitions. Second operand 32 states. [2019-11-19 22:09:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:23,728 INFO L93 Difference]: Finished difference Result 320 states and 350 transitions. [2019-11-19 22:09:23,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-19 22:09:23,728 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 205 [2019-11-19 22:09:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:23,730 INFO L225 Difference]: With dead ends: 320 [2019-11-19 22:09:23,731 INFO L226 Difference]: Without dead ends: 279 [2019-11-19 22:09:23,732 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 218 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2019-11-19 22:09:23,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2019-11-19 22:09:23,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 273. [2019-11-19 22:09:23,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2019-11-19 22:09:23,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 291 transitions. [2019-11-19 22:09:23,744 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 291 transitions. Word has length 205 [2019-11-19 22:09:23,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:23,746 INFO L462 AbstractCegarLoop]: Abstraction has 273 states and 291 transitions. [2019-11-19 22:09:23,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-11-19 22:09:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 291 transitions. [2019-11-19 22:09:23,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-11-19 22:09:23,750 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:23,750 INFO L410 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1] [2019-11-19 22:09:23,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:23,963 INFO L410 AbstractCegarLoop]: === Iteration 24 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:23,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:23,964 INFO L82 PathProgramCache]: Analyzing trace with hash -419025284, now seen corresponding path program 14 times [2019-11-19 22:09:23,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:23,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629130076] [2019-11-19 22:09:23,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2019-11-19 22:09:25,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629130076] [2019-11-19 22:09:25,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623192711] [2019-11-19 22:09:25,049 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:25,124 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:09:25,124 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:25,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-19 22:09:25,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2019-11-19 22:09:25,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:25,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-11-19 22:09:25,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596143274] [2019-11-19 22:09:25,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-19 22:09:25,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:25,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-19 22:09:25,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2019-11-19 22:09:25,595 INFO L87 Difference]: Start difference. First operand 273 states and 291 transitions. Second operand 34 states. [2019-11-19 22:09:25,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:25,785 INFO L93 Difference]: Finished difference Result 327 states and 357 transitions. [2019-11-19 22:09:25,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-19 22:09:25,785 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 217 [2019-11-19 22:09:25,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:25,788 INFO L225 Difference]: With dead ends: 327 [2019-11-19 22:09:25,788 INFO L226 Difference]: Without dead ends: 286 [2019-11-19 22:09:25,789 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 231 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2019-11-19 22:09:25,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2019-11-19 22:09:25,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2019-11-19 22:09:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2019-11-19 22:09:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 298 transitions. [2019-11-19 22:09:25,803 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 298 transitions. Word has length 217 [2019-11-19 22:09:25,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:25,803 INFO L462 AbstractCegarLoop]: Abstraction has 280 states and 298 transitions. [2019-11-19 22:09:25,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-19 22:09:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 298 transitions. [2019-11-19 22:09:25,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-11-19 22:09:25,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:25,808 INFO L410 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2019-11-19 22:09:26,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:26,012 INFO L410 AbstractCegarLoop]: === Iteration 25 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:26,013 INFO L82 PathProgramCache]: Analyzing trace with hash 537467854, now seen corresponding path program 15 times [2019-11-19 22:09:26,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:26,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392033511] [2019-11-19 22:09:26,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2019-11-19 22:09:27,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392033511] [2019-11-19 22:09:27,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284003815] [2019-11-19 22:09:27,236 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:27,313 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-19 22:09:27,316 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:27,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-19 22:09:27,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2019-11-19 22:09:27,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:27,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-11-19 22:09:27,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953624838] [2019-11-19 22:09:27,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-19 22:09:27,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:27,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-19 22:09:27,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2019-11-19 22:09:27,748 INFO L87 Difference]: Start difference. First operand 280 states and 298 transitions. Second operand 36 states. [2019-11-19 22:09:27,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:27,948 INFO L93 Difference]: Finished difference Result 334 states and 364 transitions. [2019-11-19 22:09:27,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-19 22:09:27,949 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 229 [2019-11-19 22:09:27,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:27,951 INFO L225 Difference]: With dead ends: 334 [2019-11-19 22:09:27,951 INFO L226 Difference]: Without dead ends: 293 [2019-11-19 22:09:27,952 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 244 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2019-11-19 22:09:27,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2019-11-19 22:09:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 287. [2019-11-19 22:09:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2019-11-19 22:09:27,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 305 transitions. [2019-11-19 22:09:27,965 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 305 transitions. Word has length 229 [2019-11-19 22:09:27,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:27,966 INFO L462 AbstractCegarLoop]: Abstraction has 287 states and 305 transitions. [2019-11-19 22:09:27,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-19 22:09:27,966 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 305 transitions. [2019-11-19 22:09:27,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-11-19 22:09:27,970 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:27,971 INFO L410 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1] [2019-11-19 22:09:28,174 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:28,175 INFO L410 AbstractCegarLoop]: === Iteration 26 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:28,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:28,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1353465532, now seen corresponding path program 16 times [2019-11-19 22:09:28,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:28,175 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76710071] [2019-11-19 22:09:28,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-19 22:09:29,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76710071] [2019-11-19 22:09:29,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592549956] [2019-11-19 22:09:29,591 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:29,675 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 22:09:29,675 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:29,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-19 22:09:29,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-19 22:09:30,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:30,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-11-19 22:09:30,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391559851] [2019-11-19 22:09:30,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-19 22:09:30,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:30,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-19 22:09:30,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2019-11-19 22:09:30,196 INFO L87 Difference]: Start difference. First operand 287 states and 305 transitions. Second operand 38 states. [2019-11-19 22:09:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:30,418 INFO L93 Difference]: Finished difference Result 341 states and 371 transitions. [2019-11-19 22:09:30,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-19 22:09:30,418 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 241 [2019-11-19 22:09:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:30,421 INFO L225 Difference]: With dead ends: 341 [2019-11-19 22:09:30,421 INFO L226 Difference]: Without dead ends: 300 [2019-11-19 22:09:30,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 257 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2019-11-19 22:09:30,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2019-11-19 22:09:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 294. [2019-11-19 22:09:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-11-19 22:09:30,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 312 transitions. [2019-11-19 22:09:30,434 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 312 transitions. Word has length 241 [2019-11-19 22:09:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:30,435 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 312 transitions. [2019-11-19 22:09:30,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-19 22:09:30,435 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 312 transitions. [2019-11-19 22:09:30,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-11-19 22:09:30,440 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:30,440 INFO L410 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1] [2019-11-19 22:09:30,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:30,645 INFO L410 AbstractCegarLoop]: === Iteration 27 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:30,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:30,645 INFO L82 PathProgramCache]: Analyzing trace with hash -843307890, now seen corresponding path program 17 times [2019-11-19 22:09:30,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:30,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520643582] [2019-11-19 22:09:30,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2019-11-19 22:09:32,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520643582] [2019-11-19 22:09:32,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426246147] [2019-11-19 22:09:32,132 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:32,234 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2019-11-19 22:09:32,234 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:32,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-19 22:09:32,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2019-11-19 22:09:32,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:32,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-11-19 22:09:32,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146827210] [2019-11-19 22:09:32,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-19 22:09:32,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:32,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-19 22:09:32,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2019-11-19 22:09:32,863 INFO L87 Difference]: Start difference. First operand 294 states and 312 transitions. Second operand 40 states. [2019-11-19 22:09:33,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:33,090 INFO L93 Difference]: Finished difference Result 348 states and 378 transitions. [2019-11-19 22:09:33,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-19 22:09:33,091 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 253 [2019-11-19 22:09:33,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:33,093 INFO L225 Difference]: With dead ends: 348 [2019-11-19 22:09:33,093 INFO L226 Difference]: Without dead ends: 307 [2019-11-19 22:09:33,094 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 270 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2019-11-19 22:09:33,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2019-11-19 22:09:33,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2019-11-19 22:09:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-11-19 22:09:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 319 transitions. [2019-11-19 22:09:33,106 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 319 transitions. Word has length 253 [2019-11-19 22:09:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:33,107 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 319 transitions. [2019-11-19 22:09:33,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-19 22:09:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 319 transitions. [2019-11-19 22:09:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2019-11-19 22:09:33,130 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:33,130 INFO L410 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1] [2019-11-19 22:09:33,334 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:33,334 INFO L410 AbstractCegarLoop]: === Iteration 28 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:33,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:33,335 INFO L82 PathProgramCache]: Analyzing trace with hash 186138364, now seen corresponding path program 18 times [2019-11-19 22:09:33,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:33,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407793740] [2019-11-19 22:09:33,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2019-11-19 22:09:34,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407793740] [2019-11-19 22:09:34,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690732578] [2019-11-19 22:09:34,956 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:35,047 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2019-11-19 22:09:35,048 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:35,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-19 22:09:35,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2019-11-19 22:09:35,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:35,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-11-19 22:09:35,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111000278] [2019-11-19 22:09:35,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-11-19 22:09:35,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:35,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-11-19 22:09:35,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2019-11-19 22:09:35,679 INFO L87 Difference]: Start difference. First operand 301 states and 319 transitions. Second operand 42 states. [2019-11-19 22:09:35,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:35,882 INFO L93 Difference]: Finished difference Result 355 states and 385 transitions. [2019-11-19 22:09:35,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-19 22:09:35,882 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 265 [2019-11-19 22:09:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:35,885 INFO L225 Difference]: With dead ends: 355 [2019-11-19 22:09:35,885 INFO L226 Difference]: Without dead ends: 314 [2019-11-19 22:09:35,886 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 283 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2019-11-19 22:09:35,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2019-11-19 22:09:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 308. [2019-11-19 22:09:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2019-11-19 22:09:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 326 transitions. [2019-11-19 22:09:35,897 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 326 transitions. Word has length 265 [2019-11-19 22:09:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:35,898 INFO L462 AbstractCegarLoop]: Abstraction has 308 states and 326 transitions. [2019-11-19 22:09:35,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-11-19 22:09:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 326 transitions. [2019-11-19 22:09:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-11-19 22:09:35,901 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:35,901 INFO L410 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1] [2019-11-19 22:09:36,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:36,105 INFO L410 AbstractCegarLoop]: === Iteration 29 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:36,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:36,105 INFO L82 PathProgramCache]: Analyzing trace with hash 420240905, now seen corresponding path program 19 times [2019-11-19 22:09:36,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:36,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914336724] [2019-11-19 22:09:36,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-19 22:09:38,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914336724] [2019-11-19 22:09:38,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885277594] [2019-11-19 22:09:38,011 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:38,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-19 22:09:38,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-19 22:09:38,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:38,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2019-11-19 22:09:38,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317416822] [2019-11-19 22:09:38,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-11-19 22:09:38,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:38,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-11-19 22:09:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2019-11-19 22:09:38,770 INFO L87 Difference]: Start difference. First operand 308 states and 326 transitions. Second operand 44 states. [2019-11-19 22:09:39,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:39,014 INFO L93 Difference]: Finished difference Result 362 states and 392 transitions. [2019-11-19 22:09:39,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-19 22:09:39,014 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 242 [2019-11-19 22:09:39,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:39,017 INFO L225 Difference]: With dead ends: 362 [2019-11-19 22:09:39,017 INFO L226 Difference]: Without dead ends: 321 [2019-11-19 22:09:39,019 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 261 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2019-11-19 22:09:39,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2019-11-19 22:09:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 315. [2019-11-19 22:09:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-11-19 22:09:39,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 333 transitions. [2019-11-19 22:09:39,033 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 333 transitions. Word has length 242 [2019-11-19 22:09:39,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:39,034 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 333 transitions. [2019-11-19 22:09:39,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-11-19 22:09:39,034 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 333 transitions. [2019-11-19 22:09:39,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-11-19 22:09:39,037 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:39,037 INFO L410 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1] [2019-11-19 22:09:39,241 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:39,241 INFO L410 AbstractCegarLoop]: === Iteration 30 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:39,242 INFO L82 PathProgramCache]: Analyzing trace with hash -2063192260, now seen corresponding path program 20 times [2019-11-19 22:09:39,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:39,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425715] [2019-11-19 22:09:39,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2019-11-19 22:09:41,174 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425715] [2019-11-19 22:09:41,174 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148982616] [2019-11-19 22:09:41,175 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:41,254 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:09:41,254 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:41,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 43 conjunts are in the unsatisfiable core [2019-11-19 22:09:41,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2019-11-19 22:09:42,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:42,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-11-19 22:09:42,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891495660] [2019-11-19 22:09:42,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-11-19 22:09:42,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:42,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-11-19 22:09:42,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-11-19 22:09:42,034 INFO L87 Difference]: Start difference. First operand 315 states and 333 transitions. Second operand 46 states. [2019-11-19 22:09:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:42,275 INFO L93 Difference]: Finished difference Result 369 states and 399 transitions. [2019-11-19 22:09:42,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-19 22:09:42,276 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 289 [2019-11-19 22:09:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:42,278 INFO L225 Difference]: With dead ends: 369 [2019-11-19 22:09:42,278 INFO L226 Difference]: Without dead ends: 328 [2019-11-19 22:09:42,280 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 309 SyntacticMatches, 20 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-11-19 22:09:42,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-11-19 22:09:42,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 322. [2019-11-19 22:09:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2019-11-19 22:09:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 340 transitions. [2019-11-19 22:09:42,292 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 340 transitions. Word has length 289 [2019-11-19 22:09:42,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:42,293 INFO L462 AbstractCegarLoop]: Abstraction has 322 states and 340 transitions. [2019-11-19 22:09:42,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-11-19 22:09:42,294 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 340 transitions. [2019-11-19 22:09:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2019-11-19 22:09:42,297 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:42,297 INFO L410 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1] [2019-11-19 22:09:42,501 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:42,501 INFO L410 AbstractCegarLoop]: === Iteration 31 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:42,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:42,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1826765367, now seen corresponding path program 21 times [2019-11-19 22:09:42,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:42,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100850942] [2019-11-19 22:09:42,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2019-11-19 22:09:44,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100850942] [2019-11-19 22:09:44,429 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123125119] [2019-11-19 22:09:44,429 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:44,512 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-11-19 22:09:44,512 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:44,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-19 22:09:44,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2019-11-19 22:09:45,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:45,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-11-19 22:09:45,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563524889] [2019-11-19 22:09:45,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-11-19 22:09:45,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:45,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-11-19 22:09:45,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-11-19 22:09:45,078 INFO L87 Difference]: Start difference. First operand 322 states and 340 transitions. Second operand 48 states. [2019-11-19 22:09:45,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:45,270 INFO L93 Difference]: Finished difference Result 376 states and 406 transitions. [2019-11-19 22:09:45,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-11-19 22:09:45,270 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 266 [2019-11-19 22:09:45,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:45,272 INFO L225 Difference]: With dead ends: 376 [2019-11-19 22:09:45,273 INFO L226 Difference]: Without dead ends: 335 [2019-11-19 22:09:45,274 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 287 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-11-19 22:09:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2019-11-19 22:09:45,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 329. [2019-11-19 22:09:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2019-11-19 22:09:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 347 transitions. [2019-11-19 22:09:45,285 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 347 transitions. Word has length 266 [2019-11-19 22:09:45,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:45,285 INFO L462 AbstractCegarLoop]: Abstraction has 329 states and 347 transitions. [2019-11-19 22:09:45,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-11-19 22:09:45,286 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 347 transitions. [2019-11-19 22:09:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2019-11-19 22:09:45,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:45,289 INFO L410 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2019-11-19 22:09:45,492 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:45,493 INFO L410 AbstractCegarLoop]: === Iteration 32 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:45,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:45,493 INFO L82 PathProgramCache]: Analyzing trace with hash 338825084, now seen corresponding path program 22 times [2019-11-19 22:09:45,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:45,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133856893] [2019-11-19 22:09:45,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2019-11-19 22:09:47,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133856893] [2019-11-19 22:09:47,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183708604] [2019-11-19 22:09:47,862 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:47,939 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 22:09:47,939 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:47,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-19 22:09:47,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2019-11-19 22:09:48,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:48,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2019-11-19 22:09:48,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977886923] [2019-11-19 22:09:48,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-11-19 22:09:48,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:48,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-11-19 22:09:48,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2019-11-19 22:09:48,669 INFO L87 Difference]: Start difference. First operand 329 states and 347 transitions. Second operand 50 states. [2019-11-19 22:09:48,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:48,926 INFO L93 Difference]: Finished difference Result 383 states and 413 transitions. [2019-11-19 22:09:48,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-11-19 22:09:48,926 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 313 [2019-11-19 22:09:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:48,929 INFO L225 Difference]: With dead ends: 383 [2019-11-19 22:09:48,929 INFO L226 Difference]: Without dead ends: 342 [2019-11-19 22:09:48,930 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 335 SyntacticMatches, 22 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2019-11-19 22:09:48,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2019-11-19 22:09:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2019-11-19 22:09:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-11-19 22:09:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 354 transitions. [2019-11-19 22:09:48,942 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 354 transitions. Word has length 313 [2019-11-19 22:09:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:48,942 INFO L462 AbstractCegarLoop]: Abstraction has 336 states and 354 transitions. [2019-11-19 22:09:48,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-11-19 22:09:48,943 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 354 transitions. [2019-11-19 22:09:48,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-11-19 22:09:48,945 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:48,946 INFO L410 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1] [2019-11-19 22:09:49,149 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:49,150 INFO L410 AbstractCegarLoop]: === Iteration 33 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:49,150 INFO L82 PathProgramCache]: Analyzing trace with hash 117652873, now seen corresponding path program 23 times [2019-11-19 22:09:49,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:49,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750969542] [2019-11-19 22:09:49,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-19 22:09:51,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750969542] [2019-11-19 22:09:51,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025137143] [2019-11-19 22:09:51,547 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:51,645 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2019-11-19 22:09:51,645 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:51,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-19 22:09:51,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:09:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-19 22:09:52,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:09:52,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2019-11-19 22:09:52,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734636437] [2019-11-19 22:09:52,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-19 22:09:52,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:09:52,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-19 22:09:52,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2019-11-19 22:09:52,297 INFO L87 Difference]: Start difference. First operand 336 states and 354 transitions. Second operand 52 states. [2019-11-19 22:09:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:09:52,560 INFO L93 Difference]: Finished difference Result 390 states and 420 transitions. [2019-11-19 22:09:52,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-11-19 22:09:52,561 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 290 [2019-11-19 22:09:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:09:52,563 INFO L225 Difference]: With dead ends: 390 [2019-11-19 22:09:52,563 INFO L226 Difference]: Without dead ends: 349 [2019-11-19 22:09:52,565 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 313 SyntacticMatches, 23 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2019-11-19 22:09:52,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2019-11-19 22:09:52,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 343. [2019-11-19 22:09:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-11-19 22:09:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 361 transitions. [2019-11-19 22:09:52,578 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 361 transitions. Word has length 290 [2019-11-19 22:09:52,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:09:52,579 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 361 transitions. [2019-11-19 22:09:52,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-19 22:09:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 361 transitions. [2019-11-19 22:09:52,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2019-11-19 22:09:52,583 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:52,583 INFO L410 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1] [2019-11-19 22:09:52,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:52,788 INFO L410 AbstractCegarLoop]: === Iteration 34 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 22:09:52,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:52,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1252532292, now seen corresponding path program 24 times [2019-11-19 22:09:52,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:52,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033915094] [2019-11-19 22:09:52,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:09:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4572 backedges. 2072 proven. 1072 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-19 22:09:55,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033915094] [2019-11-19 22:09:55,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888810725] [2019-11-19 22:09:55,757 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b0b60f3-9f9b-48b4-8421-4ecc8a88ede6/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:55,867 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2019-11-19 22:09:55,867 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:09:55,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 51 conjunts are in the unsatisfiable core [2019-11-19 22:09:55,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:10:02,048 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-11-19 22:10:42,390 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 27 [2019-11-19 22:10:44,460 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-19 22:10:46,614 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-19 22:10:48,703 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-19 22:10:50,830 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-19 22:10:52,969 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-19 22:10:55,052 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-19 22:10:58,760 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-19 22:11:00,863 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_310|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-19 22:11:03,190 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_310|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-19 22:11:05,277 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_311| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_311|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_311| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_310|))) is different from true [2019-11-19 22:11:07,468 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_311| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_311|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_311| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_310|))) is different from true [2019-11-19 22:11:09,714 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_311| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_312| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_312| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_311|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_312|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_311| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_310|))) is different from true [2019-11-19 22:11:15,219 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_311| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_312| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_312| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_311|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_312|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_311| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_310|))) is different from true [2019-11-19 22:11:17,754 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_311| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_313| Int) (|v_hanoi_#res_BEFORE_RETURN_312| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_312| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_311|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_313|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_313| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_312|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_311| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_310|))) is different from true [2019-11-19 22:11:43,244 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_311| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_313| Int) (|v_hanoi_#res_BEFORE_RETURN_312| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_312| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_311|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_313| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_312|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_311| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_310|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_313|))) is different from true [2019-11-19 22:11:50,726 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-19 22:11:50,726 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: SMTLIBException [2019-11-19 22:11:50,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:11:50,927 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:140) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:851) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:576) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 42 more [2019-11-19 22:11:50,931 INFO L168 Benchmark]: Toolchain (without parser) took 166225.64 ms. Allocated memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: 1.3 GB). Free memory was 944.8 MB in the beginning and 1.7 GB in the end (delta: -758.8 MB). Peak memory consumption was 511.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:11:50,932 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:11:50,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:11:50,933 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:11:50,933 INFO L168 Benchmark]: Boogie Preprocessor took 25.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:11:50,933 INFO L168 Benchmark]: RCFGBuilder took 307.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:11:50,934 INFO L168 Benchmark]: TraceAbstraction took 165516.79 ms. Allocated memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: 1.1 GB). Free memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: -584.3 MB). Peak memory consumption was 536.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:11:50,936 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 332.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 307.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 165516.79 ms. Allocated memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: 1.1 GB). Free memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: -584.3 MB). Peak memory consumption was 536.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...