./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/recHanoi02-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/recHanoi02-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 64bit --witnessprinter.graph.data.programhash 5562cc301d5faa8ad8777fb25a4973bec89fa1c5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/bin/uautomizer/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_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 [2019-11-20 10:19:43,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:19:43,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:19:43,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:19:43,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:19:43,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:19:43,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:19:43,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:19:43,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:19:43,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:19:43,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:19:43,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:19:43,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:19:43,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:19:43,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:19:43,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:19:43,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:19:43,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:19:43,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:19:43,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:19:43,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:19:43,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:19:43,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:19:43,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:19:43,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:19:43,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:19:43,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:19:43,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:19:43,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:19:43,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:19:43,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:19:43,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:19:43,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:19:43,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:19:43,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:19:43,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:19:43,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:19:43,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:19:43,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:19:43,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:19:43,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:19:43,198 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-20 10:19:43,221 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:19:43,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:19:43,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:19:43,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:19:43,223 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:19:43,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:19:43,224 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 10:19:43,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:19:43,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:19:43,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:19:43,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:19:43,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:19:43,226 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-20 10:19:43,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:19:43,226 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:19:43,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:19:43,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:19:43,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:19:43,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:19:43,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:19:43,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:19:43,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:19:43,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:19:43,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:19:43,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:19:43,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 10:19:43,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:19:43,229 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_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5562cc301d5faa8ad8777fb25a4973bec89fa1c5 [2019-11-20 10:19:43,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:19:43,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:19:43,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:19:43,468 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:19:43,469 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:19:43,469 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/recHanoi02-1.c [2019-11-20 10:19:43,537 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/bin/uautomizer/data/f5da2c86d/3e317fcf17df47c6adcf69a6bfa364d6/FLAG8639be7f3 [2019-11-20 10:19:43,864 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:19:43,864 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/sv-benchmarks/c/termination-numeric/recHanoi02-1.c [2019-11-20 10:19:43,868 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/bin/uautomizer/data/f5da2c86d/3e317fcf17df47c6adcf69a6bfa364d6/FLAG8639be7f3 [2019-11-20 10:19:44,254 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/bin/uautomizer/data/f5da2c86d/3e317fcf17df47c6adcf69a6bfa364d6 [2019-11-20 10:19:44,256 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:19:44,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:19:44,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:19:44,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:19:44,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:19:44,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:19:44" (1/1) ... [2019-11-20 10:19:44,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490fbd7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44, skipping insertion in model container [2019-11-20 10:19:44,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:19:44" (1/1) ... [2019-11-20 10:19:44,271 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:19:44,285 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:19:44,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:19:44,430 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:19:44,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:19:44,531 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:19:44,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44 WrapperNode [2019-11-20 10:19:44,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:19:44,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:19:44,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:19:44,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:19:44,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44" (1/1) ... [2019-11-20 10:19:44,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44" (1/1) ... [2019-11-20 10:19:44,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:19:44,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:19:44,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:19:44,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:19:44,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44" (1/1) ... [2019-11-20 10:19:44,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44" (1/1) ... [2019-11-20 10:19:44,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44" (1/1) ... [2019-11-20 10:19:44,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44" (1/1) ... [2019-11-20 10:19:44,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44" (1/1) ... [2019-11-20 10:19:44,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44" (1/1) ... [2019-11-20 10:19:44,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44" (1/1) ... [2019-11-20 10:19:44,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:19:44,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:19:44,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:19:44,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:19:44,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2019-11-20 10:19:44,660 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2019-11-20 10:19:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:19:44,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:19:44,857 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:19:44,857 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 10:19:44,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:19:44 BoogieIcfgContainer [2019-11-20 10:19:44,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:19:44,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:19:44,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:19:44,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:19:44,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:19:44" (1/3) ... [2019-11-20 10:19:44,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1bf598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:19:44, skipping insertion in model container [2019-11-20 10:19:44,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:44" (2/3) ... [2019-11-20 10:19:44,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1bf598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:19:44, skipping insertion in model container [2019-11-20 10:19:44,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:19:44" (3/3) ... [2019-11-20 10:19:44,877 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-1.c [2019-11-20 10:19:44,886 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:19:44,893 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-20 10:19:44,917 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-20 10:19:44,947 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:19:44,947 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:19:44,947 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:19:44,947 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:19:44,947 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:19:44,947 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:19:44,947 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:19:44,964 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:19:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-20 10:19:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 10:19:45,002 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:45,003 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 10:19:45,003 INFO L410 AbstractCegarLoop]: === Iteration 1 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:45,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:45,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1513948958, now seen corresponding path program 1 times [2019-11-20 10:19:45,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:45,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794218349] [2019-11-20 10:19:45,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:45,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794218349] [2019-11-20 10:19:45,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:19:45,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 10:19:45,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388069131] [2019-11-20 10:19:45,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:19:45,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:45,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:19:45,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:19:45,249 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2019-11-20 10:19:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:45,347 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-11-20 10:19:45,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 10:19:45,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-20 10:19:45,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:45,355 INFO L225 Difference]: With dead ends: 33 [2019-11-20 10:19:45,356 INFO L226 Difference]: Without dead ends: 20 [2019-11-20 10:19:45,358 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 [2019-11-20 10:19:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-20 10:19:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-20 10:19:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-20 10:19:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-11-20 10:19:45,393 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2019-11-20 10:19:45,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:45,394 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-11-20 10:19:45,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:19:45,394 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-11-20 10:19:45,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 10:19:45,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:45,395 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:19:45,395 INFO L410 AbstractCegarLoop]: === Iteration 2 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:45,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:45,396 INFO L82 PathProgramCache]: Analyzing trace with hash -312222520, now seen corresponding path program 1 times [2019-11-20 10:19:45,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:45,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805662640] [2019-11-20 10:19:45,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:45,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805662640] [2019-11-20 10:19:45,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:19:45,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 10:19:45,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528670576] [2019-11-20 10:19:45,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:19:45,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:45,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:19:45,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:19:45,453 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2019-11-20 10:19:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:45,530 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-11-20 10:19:45,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:19:45,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-20 10:19:45,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:45,534 INFO L225 Difference]: With dead ends: 39 [2019-11-20 10:19:45,535 INFO L226 Difference]: Without dead ends: 36 [2019-11-20 10:19:45,536 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 [2019-11-20 10:19:45,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-20 10:19:45,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-11-20 10:19:45,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 10:19:45,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-20 10:19:45,546 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2019-11-20 10:19:45,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:45,546 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-20 10:19:45,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:19:45,546 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-20 10:19:45,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 10:19:45,547 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:45,548 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 10:19:45,548 INFO L410 AbstractCegarLoop]: === Iteration 3 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:45,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1144431293, now seen corresponding path program 1 times [2019-11-20 10:19:45,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:45,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006670725] [2019-11-20 10:19:45,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:45,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006670725] [2019-11-20 10:19:45,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790290810] [2019-11-20 10:19:45,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:45,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 10:19:45,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:45,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:45,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 10:19:45,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417875650] [2019-11-20 10:19:45,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 10:19:45,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:45,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 10:19:45,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:19:45,684 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 7 states. [2019-11-20 10:19:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:45,810 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2019-11-20 10:19:45,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 10:19:45,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-20 10:19:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:45,813 INFO L225 Difference]: With dead ends: 55 [2019-11-20 10:19:45,813 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 10:19:45,813 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 [2019-11-20 10:19:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 10:19:45,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2019-11-20 10:19:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-20 10:19:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2019-11-20 10:19:45,839 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 12 [2019-11-20 10:19:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:45,839 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2019-11-20 10:19:45,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 10:19:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2019-11-20 10:19:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 10:19:45,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:45,840 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:19:46,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:46,042 INFO L410 AbstractCegarLoop]: === Iteration 4 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:46,043 INFO L82 PathProgramCache]: Analyzing trace with hash -287349001, now seen corresponding path program 1 times [2019-11-20 10:19:46,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:46,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93467553] [2019-11-20 10:19:46,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 10:19:46,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93467553] [2019-11-20 10:19:46,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:19:46,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 10:19:46,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328983643] [2019-11-20 10:19:46,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:19:46,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:46,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:19:46,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:19:46,091 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 4 states. [2019-11-20 10:19:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:46,133 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2019-11-20 10:19:46,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:19:46,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-20 10:19:46,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:46,137 INFO L225 Difference]: With dead ends: 65 [2019-11-20 10:19:46,138 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 10:19:46,139 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 [2019-11-20 10:19:46,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 10:19:46,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-20 10:19:46,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-20 10:19:46,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2019-11-20 10:19:46,151 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 14 [2019-11-20 10:19:46,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:46,152 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2019-11-20 10:19:46,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:19:46,152 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2019-11-20 10:19:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 10:19:46,153 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:46,153 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2019-11-20 10:19:46,153 INFO L410 AbstractCegarLoop]: === Iteration 5 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:46,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:46,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1656222120, now seen corresponding path program 2 times [2019-11-20 10:19:46,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:46,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756977718] [2019-11-20 10:19:46,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:46,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756977718] [2019-11-20 10:19:46,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668172126] [2019-11-20 10:19:46,237 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:46,267 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:19:46,267 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:46,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 10:19:46,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:46,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:46,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-20 10:19:46,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057608974] [2019-11-20 10:19:46,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 10:19:46,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:46,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 10:19:46,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 10:19:46,278 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states. [2019-11-20 10:19:46,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:46,430 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2019-11-20 10:19:46,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 10:19:46,431 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-11-20 10:19:46,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:46,432 INFO L225 Difference]: With dead ends: 86 [2019-11-20 10:19:46,432 INFO L226 Difference]: Without dead ends: 85 [2019-11-20 10:19:46,433 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-20 10:19:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-20 10:19:46,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2019-11-20 10:19:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-20 10:19:46,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2019-11-20 10:19:46,445 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 17 [2019-11-20 10:19:46,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:46,446 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2019-11-20 10:19:46,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 10:19:46,446 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2019-11-20 10:19:46,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 10:19:46,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:46,447 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1] [2019-11-20 10:19:46,650 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:46,657 INFO L410 AbstractCegarLoop]: === Iteration 6 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:46,657 INFO L82 PathProgramCache]: Analyzing trace with hash 438260835, now seen corresponding path program 3 times [2019-11-20 10:19:46,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:46,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778572016] [2019-11-20 10:19:46,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:46,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778572016] [2019-11-20 10:19:46,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436653312] [2019-11-20 10:19:46,791 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:46,819 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 10:19:46,819 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:46,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 10:19:46,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:46,830 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:46,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:46,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-20 10:19:46,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386390249] [2019-11-20 10:19:46,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 10:19:46,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:46,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 10:19:46,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-20 10:19:46,832 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand 11 states. [2019-11-20 10:19:47,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:47,034 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2019-11-20 10:19:47,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 10:19:47,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2019-11-20 10:19:47,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:47,040 INFO L225 Difference]: With dead ends: 109 [2019-11-20 10:19:47,040 INFO L226 Difference]: Without dead ends: 108 [2019-11-20 10:19:47,041 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 [2019-11-20 10:19:47,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-20 10:19:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2019-11-20 10:19:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-20 10:19:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2019-11-20 10:19:47,055 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 22 [2019-11-20 10:19:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:47,059 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2019-11-20 10:19:47,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 10:19:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2019-11-20 10:19:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 10:19:47,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:47,061 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2019-11-20 10:19:47,265 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:47,268 INFO L410 AbstractCegarLoop]: === Iteration 7 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:47,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1696558728, now seen corresponding path program 4 times [2019-11-20 10:19:47,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:47,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720587743] [2019-11-20 10:19:47,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:47,447 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720587743] [2019-11-20 10:19:47,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722787627] [2019-11-20 10:19:47,448 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:47,484 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:19:47,485 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:47,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 10:19:47,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:47,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:47,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-20 10:19:47,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100589159] [2019-11-20 10:19:47,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 10:19:47,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:47,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 10:19:47,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-20 10:19:47,517 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand 13 states. [2019-11-20 10:19:47,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:47,764 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2019-11-20 10:19:47,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 10:19:47,765 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2019-11-20 10:19:47,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:47,767 INFO L225 Difference]: With dead ends: 132 [2019-11-20 10:19:47,767 INFO L226 Difference]: Without dead ends: 131 [2019-11-20 10:19:47,768 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 [2019-11-20 10:19:47,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-11-20 10:19:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2019-11-20 10:19:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-20 10:19:47,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 136 transitions. [2019-11-20 10:19:47,783 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 136 transitions. Word has length 27 [2019-11-20 10:19:47,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:47,784 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 136 transitions. [2019-11-20 10:19:47,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 10:19:47,784 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 136 transitions. [2019-11-20 10:19:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-20 10:19:47,785 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:47,785 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:19:47,988 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:47,989 INFO L410 AbstractCegarLoop]: === Iteration 8 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:47,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:47,990 INFO L82 PathProgramCache]: Analyzing trace with hash -563967927, now seen corresponding path program 1 times [2019-11-20 10:19:47,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:47,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107155297] [2019-11-20 10:19:47,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 10:19:48,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107155297] [2019-11-20 10:19:48,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487716037] [2019-11-20 10:19:48,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:48,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 10:19:48,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 10:19:48,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:48,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-20 10:19:48,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614497100] [2019-11-20 10:19:48,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 10:19:48,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:48,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 10:19:48,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:19:48,134 INFO L87 Difference]: Start difference. First operand 111 states and 136 transitions. Second operand 8 states. [2019-11-20 10:19:48,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:48,189 INFO L93 Difference]: Finished difference Result 153 states and 200 transitions. [2019-11-20 10:19:48,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 10:19:48,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2019-11-20 10:19:48,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:48,192 INFO L225 Difference]: With dead ends: 153 [2019-11-20 10:19:48,192 INFO L226 Difference]: Without dead ends: 151 [2019-11-20 10:19:48,193 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 [2019-11-20 10:19:48,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-20 10:19:48,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2019-11-20 10:19:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-11-20 10:19:48,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 177 transitions. [2019-11-20 10:19:48,207 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 177 transitions. Word has length 26 [2019-11-20 10:19:48,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:48,207 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 177 transitions. [2019-11-20 10:19:48,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 10:19:48,207 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 177 transitions. [2019-11-20 10:19:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 10:19:48,209 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:48,209 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:19:48,412 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:48,413 INFO L410 AbstractCegarLoop]: === Iteration 9 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:48,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:48,413 INFO L82 PathProgramCache]: Analyzing trace with hash -303136509, now seen corresponding path program 1 times [2019-11-20 10:19:48,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:48,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203298523] [2019-11-20 10:19:48,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 10:19:48,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203298523] [2019-11-20 10:19:48,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708927824] [2019-11-20 10:19:48,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:48,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 10:19:48,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 10:19:48,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 10:19:48,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2019-11-20 10:19:48,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947274164] [2019-11-20 10:19:48,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 10:19:48,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:48,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 10:19:48,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:19:48,574 INFO L87 Difference]: Start difference. First operand 145 states and 177 transitions. Second operand 6 states. [2019-11-20 10:19:48,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:48,618 INFO L93 Difference]: Finished difference Result 145 states and 177 transitions. [2019-11-20 10:19:48,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:19:48,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-11-20 10:19:48,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:48,621 INFO L225 Difference]: With dead ends: 145 [2019-11-20 10:19:48,621 INFO L226 Difference]: Without dead ends: 129 [2019-11-20 10:19:48,622 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 [2019-11-20 10:19:48,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-11-20 10:19:48,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2019-11-20 10:19:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-11-20 10:19:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2019-11-20 10:19:48,633 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 27 [2019-11-20 10:19:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:48,634 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2019-11-20 10:19:48,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 10:19:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2019-11-20 10:19:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 10:19:48,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:48,635 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1] [2019-11-20 10:19:48,839 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:48,840 INFO L410 AbstractCegarLoop]: === Iteration 10 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:48,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1757224061, now seen corresponding path program 5 times [2019-11-20 10:19:48,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:48,841 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435025826] [2019-11-20 10:19:48,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:49,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435025826] [2019-11-20 10:19:49,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440167885] [2019-11-20 10:19:49,019 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:49,090 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-20 10:19:49,090 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:49,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 10:19:49,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:49,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:49,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-20 10:19:49,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492471007] [2019-11-20 10:19:49,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 10:19:49,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:49,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 10:19:49,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2019-11-20 10:19:49,112 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand 15 states. [2019-11-20 10:19:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:49,361 INFO L93 Difference]: Finished difference Result 167 states and 173 transitions. [2019-11-20 10:19:49,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-20 10:19:49,362 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2019-11-20 10:19:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:49,363 INFO L225 Difference]: With dead ends: 167 [2019-11-20 10:19:49,364 INFO L226 Difference]: Without dead ends: 166 [2019-11-20 10:19:49,364 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 [2019-11-20 10:19:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-11-20 10:19:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2019-11-20 10:19:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-20 10:19:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2019-11-20 10:19:49,373 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 32 [2019-11-20 10:19:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:49,374 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2019-11-20 10:19:49,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 10:19:49,374 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2019-11-20 10:19:49,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-20 10:19:49,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:49,375 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2019-11-20 10:19:49,579 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:49,580 INFO L410 AbstractCegarLoop]: === Iteration 11 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:49,581 INFO L82 PathProgramCache]: Analyzing trace with hash -512208024, now seen corresponding path program 6 times [2019-11-20 10:19:49,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:49,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049041837] [2019-11-20 10:19:49,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:49,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049041837] [2019-11-20 10:19:49,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79479463] [2019-11-20 10:19:49,844 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:49,899 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-20 10:19:49,899 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:49,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 10:19:49,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-20 10:19:49,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:49,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 17 [2019-11-20 10:19:49,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494429109] [2019-11-20 10:19:49,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 10:19:49,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:49,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 10:19:49,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-11-20 10:19:49,985 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand 18 states. [2019-11-20 10:19:50,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:50,033 INFO L93 Difference]: Finished difference Result 154 states and 172 transitions. [2019-11-20 10:19:50,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:19:50,034 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 37 [2019-11-20 10:19:50,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:50,036 INFO L225 Difference]: With dead ends: 154 [2019-11-20 10:19:50,036 INFO L226 Difference]: Without dead ends: 153 [2019-11-20 10:19:50,037 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 [2019-11-20 10:19:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-11-20 10:19:50,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-11-20 10:19:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-20 10:19:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 171 transitions. [2019-11-20 10:19:50,046 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 171 transitions. Word has length 37 [2019-11-20 10:19:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:50,047 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 171 transitions. [2019-11-20 10:19:50,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 10:19:50,047 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 171 transitions. [2019-11-20 10:19:50,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 10:19:50,049 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:50,049 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-20 10:19:50,253 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:50,253 INFO L410 AbstractCegarLoop]: === Iteration 12 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:50,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:50,254 INFO L82 PathProgramCache]: Analyzing trace with hash 867149367, now seen corresponding path program 2 times [2019-11-20 10:19:50,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:50,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787957853] [2019-11-20 10:19:50,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-20 10:19:50,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787957853] [2019-11-20 10:19:50,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002601437] [2019-11-20 10:19:50,366 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:50,401 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:19:50,401 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:50,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 10:19:50,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-20 10:19:50,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:50,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-11-20 10:19:50,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375811562] [2019-11-20 10:19:50,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 10:19:50,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:50,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 10:19:50,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-20 10:19:50,448 INFO L87 Difference]: Start difference. First operand 153 states and 171 transitions. Second operand 10 states. [2019-11-20 10:19:50,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:50,498 INFO L93 Difference]: Finished difference Result 207 states and 237 transitions. [2019-11-20 10:19:50,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 10:19:50,499 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-20 10:19:50,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:50,500 INFO L225 Difference]: With dead ends: 207 [2019-11-20 10:19:50,500 INFO L226 Difference]: Without dead ends: 185 [2019-11-20 10:19:50,501 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-20 10:19:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-11-20 10:19:50,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 179. [2019-11-20 10:19:50,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2019-11-20 10:19:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2019-11-20 10:19:50,515 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 38 [2019-11-20 10:19:50,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:50,517 INFO L462 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2019-11-20 10:19:50,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 10:19:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2019-11-20 10:19:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-20 10:19:50,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:50,525 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2019-11-20 10:19:50,728 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:50,732 INFO L410 AbstractCegarLoop]: === Iteration 13 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:50,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:50,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1066180599, now seen corresponding path program 3 times [2019-11-20 10:19:50,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:50,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351872089] [2019-11-20 10:19:50,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-20 10:19:50,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351872089] [2019-11-20 10:19:50,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834587370] [2019-11-20 10:19:50,896 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:50,937 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 10:19:50,937 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:50,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 10:19:50,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-20 10:19:51,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:51,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-11-20 10:19:51,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064259501] [2019-11-20 10:19:51,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 10:19:51,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:51,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 10:19:51,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-20 10:19:51,017 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand 12 states. [2019-11-20 10:19:51,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:51,073 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2019-11-20 10:19:51,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 10:19:51,074 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-11-20 10:19:51,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:51,075 INFO L225 Difference]: With dead ends: 233 [2019-11-20 10:19:51,075 INFO L226 Difference]: Without dead ends: 204 [2019-11-20 10:19:51,076 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 [2019-11-20 10:19:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-11-20 10:19:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2019-11-20 10:19:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-11-20 10:19:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 216 transitions. [2019-11-20 10:19:51,086 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 216 transitions. Word has length 50 [2019-11-20 10:19:51,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:51,086 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 216 transitions. [2019-11-20 10:19:51,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 10:19:51,086 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 216 transitions. [2019-11-20 10:19:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-20 10:19:51,088 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:51,089 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2019-11-20 10:19:51,296 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:51,296 INFO L410 AbstractCegarLoop]: === Iteration 14 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:51,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:51,297 INFO L82 PathProgramCache]: Analyzing trace with hash -158018185, now seen corresponding path program 4 times [2019-11-20 10:19:51,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:51,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300267928] [2019-11-20 10:19:51,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-20 10:19:51,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300267928] [2019-11-20 10:19:51,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567892338] [2019-11-20 10:19:51,485 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:51,536 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:19:51,536 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:51,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 10:19:51,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-20 10:19:51,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:51,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-11-20 10:19:51,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243639199] [2019-11-20 10:19:51,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 10:19:51,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:51,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 10:19:51,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-11-20 10:19:51,638 INFO L87 Difference]: Start difference. First operand 198 states and 216 transitions. Second operand 14 states. [2019-11-20 10:19:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:51,715 INFO L93 Difference]: Finished difference Result 252 states and 282 transitions. [2019-11-20 10:19:51,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 10:19:51,716 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2019-11-20 10:19:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:51,718 INFO L225 Difference]: With dead ends: 252 [2019-11-20 10:19:51,718 INFO L226 Difference]: Without dead ends: 216 [2019-11-20 10:19:51,719 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 [2019-11-20 10:19:51,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2019-11-20 10:19:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2019-11-20 10:19:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-11-20 10:19:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 228 transitions. [2019-11-20 10:19:51,734 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 228 transitions. Word has length 62 [2019-11-20 10:19:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:51,734 INFO L462 AbstractCegarLoop]: Abstraction has 210 states and 228 transitions. [2019-11-20 10:19:51,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 10:19:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 228 transitions. [2019-11-20 10:19:51,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-20 10:19:51,737 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:51,738 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2019-11-20 10:19:51,949 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:51,949 INFO L410 AbstractCegarLoop]: === Iteration 15 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:51,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:51,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1955313719, now seen corresponding path program 5 times [2019-11-20 10:19:51,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:51,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403451438] [2019-11-20 10:19:51,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-20 10:19:52,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403451438] [2019-11-20 10:19:52,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426065490] [2019-11-20 10:19:52,169 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:52,216 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-20 10:19:52,216 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:52,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 10:19:52,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-20 10:19:52,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:52,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-11-20 10:19:52,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123278783] [2019-11-20 10:19:52,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 10:19:52,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:52,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 10:19:52,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-11-20 10:19:52,319 INFO L87 Difference]: Start difference. First operand 210 states and 228 transitions. Second operand 16 states. [2019-11-20 10:19:52,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:52,411 INFO L93 Difference]: Finished difference Result 264 states and 294 transitions. [2019-11-20 10:19:52,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 10:19:52,415 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2019-11-20 10:19:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:52,417 INFO L225 Difference]: With dead ends: 264 [2019-11-20 10:19:52,417 INFO L226 Difference]: Without dead ends: 223 [2019-11-20 10:19:52,419 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-11-20 10:19:52,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2019-11-20 10:19:52,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2019-11-20 10:19:52,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2019-11-20 10:19:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 235 transitions. [2019-11-20 10:19:52,431 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 235 transitions. Word has length 74 [2019-11-20 10:19:52,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:52,432 INFO L462 AbstractCegarLoop]: Abstraction has 217 states and 235 transitions. [2019-11-20 10:19:52,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 10:19:52,432 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 235 transitions. [2019-11-20 10:19:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-20 10:19:52,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:52,435 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2019-11-20 10:19:52,637 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:52,638 INFO L410 AbstractCegarLoop]: === Iteration 16 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:52,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:52,638 INFO L82 PathProgramCache]: Analyzing trace with hash -330632009, now seen corresponding path program 6 times [2019-11-20 10:19:52,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:52,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981008234] [2019-11-20 10:19:52,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-11-20 10:19:52,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981008234] [2019-11-20 10:19:52,988 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32059084] [2019-11-20 10:19:52,988 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:53,048 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-11-20 10:19:53,049 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:53,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 10:19:53,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-11-20 10:19:53,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:53,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-11-20 10:19:53,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852349170] [2019-11-20 10:19:53,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 10:19:53,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:53,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 10:19:53,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-11-20 10:19:53,177 INFO L87 Difference]: Start difference. First operand 217 states and 235 transitions. Second operand 18 states. [2019-11-20 10:19:53,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:53,274 INFO L93 Difference]: Finished difference Result 271 states and 301 transitions. [2019-11-20 10:19:53,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 10:19:53,275 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 86 [2019-11-20 10:19:53,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:53,276 INFO L225 Difference]: With dead ends: 271 [2019-11-20 10:19:53,277 INFO L226 Difference]: Without dead ends: 230 [2019-11-20 10:19:53,278 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 92 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-11-20 10:19:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2019-11-20 10:19:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2019-11-20 10:19:53,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-11-20 10:19:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 242 transitions. [2019-11-20 10:19:53,291 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 242 transitions. Word has length 86 [2019-11-20 10:19:53,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:53,291 INFO L462 AbstractCegarLoop]: Abstraction has 224 states and 242 transitions. [2019-11-20 10:19:53,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 10:19:53,291 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 242 transitions. [2019-11-20 10:19:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-20 10:19:53,294 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:53,294 INFO L410 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2019-11-20 10:19:53,498 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:53,498 INFO L410 AbstractCegarLoop]: === Iteration 17 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:53,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1066952498, now seen corresponding path program 7 times [2019-11-20 10:19:53,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:53,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239021247] [2019-11-20 10:19:53,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2019-11-20 10:19:53,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239021247] [2019-11-20 10:19:53,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892171545] [2019-11-20 10:19:53,849 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:53,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 10:19:53,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2019-11-20 10:19:54,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:54,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-11-20 10:19:54,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555384154] [2019-11-20 10:19:54,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-20 10:19:54,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:54,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-20 10:19:54,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-11-20 10:19:54,069 INFO L87 Difference]: Start difference. First operand 224 states and 242 transitions. Second operand 20 states. [2019-11-20 10:19:54,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:54,179 INFO L93 Difference]: Finished difference Result 278 states and 308 transitions. [2019-11-20 10:19:54,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 10:19:54,180 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 133 [2019-11-20 10:19:54,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:54,181 INFO L225 Difference]: With dead ends: 278 [2019-11-20 10:19:54,182 INFO L226 Difference]: Without dead ends: 237 [2019-11-20 10:19:54,183 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 140 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-11-20 10:19:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2019-11-20 10:19:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2019-11-20 10:19:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2019-11-20 10:19:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 249 transitions. [2019-11-20 10:19:54,194 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 249 transitions. Word has length 133 [2019-11-20 10:19:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:54,195 INFO L462 AbstractCegarLoop]: Abstraction has 231 states and 249 transitions. [2019-11-20 10:19:54,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-20 10:19:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 249 transitions. [2019-11-20 10:19:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-20 10:19:54,197 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:54,198 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2019-11-20 10:19:54,402 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:54,402 INFO L410 AbstractCegarLoop]: === Iteration 18 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:54,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:54,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1888355319, now seen corresponding path program 8 times [2019-11-20 10:19:54,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:54,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21234935] [2019-11-20 10:19:54,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-11-20 10:19:54,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21234935] [2019-11-20 10:19:54,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886116663] [2019-11-20 10:19:54,865 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:54,934 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:19:54,934 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:54,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 10:19:54,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-11-20 10:19:55,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:55,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-11-20 10:19:55,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499023483] [2019-11-20 10:19:55,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 10:19:55,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:55,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 10:19:55,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-11-20 10:19:55,239 INFO L87 Difference]: Start difference. First operand 231 states and 249 transitions. Second operand 22 states. [2019-11-20 10:19:55,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:55,360 INFO L93 Difference]: Finished difference Result 285 states and 315 transitions. [2019-11-20 10:19:55,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 10:19:55,361 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 110 [2019-11-20 10:19:55,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:55,363 INFO L225 Difference]: With dead ends: 285 [2019-11-20 10:19:55,363 INFO L226 Difference]: Without dead ends: 244 [2019-11-20 10:19:55,364 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 118 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-11-20 10:19:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-11-20 10:19:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 238. [2019-11-20 10:19:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-11-20 10:19:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 256 transitions. [2019-11-20 10:19:55,383 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 256 transitions. Word has length 110 [2019-11-20 10:19:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:55,383 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 256 transitions. [2019-11-20 10:19:55,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 10:19:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 256 transitions. [2019-11-20 10:19:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-20 10:19:55,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:55,387 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2019-11-20 10:19:55,599 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:55,600 INFO L410 AbstractCegarLoop]: === Iteration 19 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:55,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1336522935, now seen corresponding path program 9 times [2019-11-20 10:19:55,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:55,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538414746] [2019-11-20 10:19:55,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2019-11-20 10:19:56,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538414746] [2019-11-20 10:19:56,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928696090] [2019-11-20 10:19:56,121 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:56,185 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-20 10:19:56,185 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:56,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-20 10:19:56,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2019-11-20 10:19:56,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:56,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-11-20 10:19:56,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572878480] [2019-11-20 10:19:56,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-20 10:19:56,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:56,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-20 10:19:56,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-11-20 10:19:56,367 INFO L87 Difference]: Start difference. First operand 238 states and 256 transitions. Second operand 24 states. [2019-11-20 10:19:56,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:56,491 INFO L93 Difference]: Finished difference Result 292 states and 322 transitions. [2019-11-20 10:19:56,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-20 10:19:56,491 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 122 [2019-11-20 10:19:56,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:56,493 INFO L225 Difference]: With dead ends: 292 [2019-11-20 10:19:56,493 INFO L226 Difference]: Without dead ends: 251 [2019-11-20 10:19:56,494 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 [2019-11-20 10:19:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2019-11-20 10:19:56,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 245. [2019-11-20 10:19:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-11-20 10:19:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 263 transitions. [2019-11-20 10:19:56,508 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 263 transitions. Word has length 122 [2019-11-20 10:19:56,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:56,508 INFO L462 AbstractCegarLoop]: Abstraction has 245 states and 263 transitions. [2019-11-20 10:19:56,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-20 10:19:56,509 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 263 transitions. [2019-11-20 10:19:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-20 10:19:56,512 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:56,512 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2019-11-20 10:19:56,716 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:56,716 INFO L410 AbstractCegarLoop]: === Iteration 20 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:56,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:56,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1176109879, now seen corresponding path program 10 times [2019-11-20 10:19:56,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:56,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695047635] [2019-11-20 10:19:56,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2019-11-20 10:19:57,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695047635] [2019-11-20 10:19:57,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107374564] [2019-11-20 10:19:57,346 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:57,408 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:19:57,408 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:57,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 10:19:57,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2019-11-20 10:19:57,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:57,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-11-20 10:19:57,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056479760] [2019-11-20 10:19:57,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-20 10:19:57,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:57,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-20 10:19:57,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-11-20 10:19:57,671 INFO L87 Difference]: Start difference. First operand 245 states and 263 transitions. Second operand 26 states. [2019-11-20 10:19:57,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:57,791 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2019-11-20 10:19:57,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-20 10:19:57,791 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 134 [2019-11-20 10:19:57,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:57,793 INFO L225 Difference]: With dead ends: 299 [2019-11-20 10:19:57,794 INFO L226 Difference]: Without dead ends: 258 [2019-11-20 10:19:57,794 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 [2019-11-20 10:19:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2019-11-20 10:19:57,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 252. [2019-11-20 10:19:57,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2019-11-20 10:19:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 270 transitions. [2019-11-20 10:19:57,807 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 270 transitions. Word has length 134 [2019-11-20 10:19:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:57,808 INFO L462 AbstractCegarLoop]: Abstraction has 252 states and 270 transitions. [2019-11-20 10:19:57,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-20 10:19:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 270 transitions. [2019-11-20 10:19:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-20 10:19:57,811 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:57,811 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1] [2019-11-20 10:19:58,015 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:58,015 INFO L410 AbstractCegarLoop]: === Iteration 21 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:58,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:58,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1656708873, now seen corresponding path program 11 times [2019-11-20 10:19:58,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:58,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581355044] [2019-11-20 10:19:58,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2019-11-20 10:19:58,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581355044] [2019-11-20 10:19:58,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020118948] [2019-11-20 10:19:58,691 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:19:58,745 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-11-20 10:19:58,745 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:58,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 10:19:58,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2019-11-20 10:19:58,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:58,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-11-20 10:19:58,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570243349] [2019-11-20 10:19:58,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-20 10:19:58,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:58,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-20 10:19:58,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2019-11-20 10:19:58,987 INFO L87 Difference]: Start difference. First operand 252 states and 270 transitions. Second operand 28 states. [2019-11-20 10:19:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:59,153 INFO L93 Difference]: Finished difference Result 306 states and 336 transitions. [2019-11-20 10:19:59,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-20 10:19:59,154 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 146 [2019-11-20 10:19:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:59,156 INFO L225 Difference]: With dead ends: 306 [2019-11-20 10:19:59,156 INFO L226 Difference]: Without dead ends: 265 [2019-11-20 10:19:59,157 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 157 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2019-11-20 10:19:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-11-20 10:19:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2019-11-20 10:19:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-11-20 10:19:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 277 transitions. [2019-11-20 10:19:59,172 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 277 transitions. Word has length 146 [2019-11-20 10:19:59,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:59,173 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 277 transitions. [2019-11-20 10:19:59,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-20 10:19:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 277 transitions. [2019-11-20 10:19:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-20 10:19:59,176 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:59,176 INFO L410 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2019-11-20 10:19:59,391 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:59,392 INFO L410 AbstractCegarLoop]: === Iteration 22 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:19:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:59,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2039869892, now seen corresponding path program 12 times [2019-11-20 10:19:59,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:59,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045733986] [2019-11-20 10:19:59,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-20 10:20:00,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045733986] [2019-11-20 10:20:00,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140419287] [2019-11-20 10:20:00,241 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:00,355 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2019-11-20 10:20:00,356 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:20:00,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-20 10:20:00,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-20 10:20:00,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:00,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-11-20 10:20:00,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052270129] [2019-11-20 10:20:00,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-20 10:20:00,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:00,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-20 10:20:00,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2019-11-20 10:20:00,649 INFO L87 Difference]: Start difference. First operand 259 states and 277 transitions. Second operand 30 states. [2019-11-20 10:20:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:00,802 INFO L93 Difference]: Finished difference Result 313 states and 343 transitions. [2019-11-20 10:20:00,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-20 10:20:00,803 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 193 [2019-11-20 10:20:00,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:00,805 INFO L225 Difference]: With dead ends: 313 [2019-11-20 10:20:00,805 INFO L226 Difference]: Without dead ends: 272 [2019-11-20 10:20:00,806 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 205 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2019-11-20 10:20:00,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-11-20 10:20:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 266. [2019-11-20 10:20:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2019-11-20 10:20:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 284 transitions. [2019-11-20 10:20:00,817 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 284 transitions. Word has length 193 [2019-11-20 10:20:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:00,818 INFO L462 AbstractCegarLoop]: Abstraction has 266 states and 284 transitions. [2019-11-20 10:20:00,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-20 10:20:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 284 transitions. [2019-11-20 10:20:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-20 10:20:00,821 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:00,821 INFO L410 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1] [2019-11-20 10:20:01,025 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:01,025 INFO L410 AbstractCegarLoop]: === Iteration 23 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:01,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:01,025 INFO L82 PathProgramCache]: Analyzing trace with hash 350954254, now seen corresponding path program 13 times [2019-11-20 10:20:01,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:01,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076896168] [2019-11-20 10:20:01,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2019-11-20 10:20:01,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076896168] [2019-11-20 10:20:01,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654463903] [2019-11-20 10:20:01,932 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:02,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-20 10:20:02,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2019-11-20 10:20:02,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:02,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-11-20 10:20:02,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272642751] [2019-11-20 10:20:02,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-11-20 10:20:02,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:02,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-11-20 10:20:02,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2019-11-20 10:20:02,392 INFO L87 Difference]: Start difference. First operand 266 states and 284 transitions. Second operand 32 states. [2019-11-20 10:20:02,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:02,550 INFO L93 Difference]: Finished difference Result 320 states and 350 transitions. [2019-11-20 10:20:02,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-20 10:20:02,551 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 205 [2019-11-20 10:20:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:02,553 INFO L225 Difference]: With dead ends: 320 [2019-11-20 10:20:02,553 INFO L226 Difference]: Without dead ends: 279 [2019-11-20 10:20:02,554 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 218 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2019-11-20 10:20:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2019-11-20 10:20:02,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 273. [2019-11-20 10:20:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2019-11-20 10:20:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 291 transitions. [2019-11-20 10:20:02,568 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 291 transitions. Word has length 205 [2019-11-20 10:20:02,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:02,569 INFO L462 AbstractCegarLoop]: Abstraction has 273 states and 291 transitions. [2019-11-20 10:20:02,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-11-20 10:20:02,569 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 291 transitions. [2019-11-20 10:20:02,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-11-20 10:20:02,572 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:02,572 INFO L410 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1] [2019-11-20 10:20:02,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:02,783 INFO L410 AbstractCegarLoop]: === Iteration 24 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:02,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:02,784 INFO L82 PathProgramCache]: Analyzing trace with hash -419025284, now seen corresponding path program 14 times [2019-11-20 10:20:02,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:02,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54895182] [2019-11-20 10:20:02,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2019-11-20 10:20:03,733 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54895182] [2019-11-20 10:20:03,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325265020] [2019-11-20 10:20:03,734 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:03,793 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:20:03,793 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:20:03,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-20 10:20:03,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:04,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2019-11-20 10:20:04,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:04,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-11-20 10:20:04,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919175013] [2019-11-20 10:20:04,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-20 10:20:04,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:04,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-20 10:20:04,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 10:20:04,168 INFO L87 Difference]: Start difference. First operand 273 states and 291 transitions. Second operand 34 states. [2019-11-20 10:20:04,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:04,333 INFO L93 Difference]: Finished difference Result 327 states and 357 transitions. [2019-11-20 10:20:04,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-20 10:20:04,333 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 217 [2019-11-20 10:20:04,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:04,335 INFO L225 Difference]: With dead ends: 327 [2019-11-20 10:20:04,336 INFO L226 Difference]: Without dead ends: 286 [2019-11-20 10:20:04,337 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 231 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 10:20:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2019-11-20 10:20:04,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2019-11-20 10:20:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2019-11-20 10:20:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 298 transitions. [2019-11-20 10:20:04,350 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 298 transitions. Word has length 217 [2019-11-20 10:20:04,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:04,351 INFO L462 AbstractCegarLoop]: Abstraction has 280 states and 298 transitions. [2019-11-20 10:20:04,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-20 10:20:04,351 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 298 transitions. [2019-11-20 10:20:04,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-11-20 10:20:04,355 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:04,356 INFO L410 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2019-11-20 10:20:04,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:04,560 INFO L410 AbstractCegarLoop]: === Iteration 25 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:04,560 INFO L82 PathProgramCache]: Analyzing trace with hash 537467854, now seen corresponding path program 15 times [2019-11-20 10:20:04,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:04,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384421230] [2019-11-20 10:20:04,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2019-11-20 10:20:05,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384421230] [2019-11-20 10:20:05,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105520062] [2019-11-20 10:20:05,676 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:05,765 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-20 10:20:05,765 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:20:05,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-20 10:20:05,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2019-11-20 10:20:06,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:06,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-11-20 10:20:06,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885049517] [2019-11-20 10:20:06,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-20 10:20:06,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:06,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-20 10:20:06,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2019-11-20 10:20:06,226 INFO L87 Difference]: Start difference. First operand 280 states and 298 transitions. Second operand 36 states. [2019-11-20 10:20:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:06,403 INFO L93 Difference]: Finished difference Result 334 states and 364 transitions. [2019-11-20 10:20:06,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-20 10:20:06,404 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 229 [2019-11-20 10:20:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:06,406 INFO L225 Difference]: With dead ends: 334 [2019-11-20 10:20:06,406 INFO L226 Difference]: Without dead ends: 293 [2019-11-20 10:20:06,407 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 [2019-11-20 10:20:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2019-11-20 10:20:06,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 287. [2019-11-20 10:20:06,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2019-11-20 10:20:06,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 305 transitions. [2019-11-20 10:20:06,424 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 305 transitions. Word has length 229 [2019-11-20 10:20:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:06,425 INFO L462 AbstractCegarLoop]: Abstraction has 287 states and 305 transitions. [2019-11-20 10:20:06,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-20 10:20:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 305 transitions. [2019-11-20 10:20:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-11-20 10:20:06,428 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:06,428 INFO L410 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1] [2019-11-20 10:20:06,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:06,633 INFO L410 AbstractCegarLoop]: === Iteration 26 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:06,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1353465532, now seen corresponding path program 16 times [2019-11-20 10:20:06,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:06,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931200843] [2019-11-20 10:20:06,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-20 10:20:07,821 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931200843] [2019-11-20 10:20:07,821 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611770510] [2019-11-20 10:20:07,821 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:07,898 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:20:07,898 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:20:07,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-20 10:20:07,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-20 10:20:08,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:08,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-11-20 10:20:08,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713447900] [2019-11-20 10:20:08,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-20 10:20:08,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:08,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-20 10:20:08,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2019-11-20 10:20:08,302 INFO L87 Difference]: Start difference. First operand 287 states and 305 transitions. Second operand 38 states. [2019-11-20 10:20:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:08,519 INFO L93 Difference]: Finished difference Result 341 states and 371 transitions. [2019-11-20 10:20:08,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-20 10:20:08,520 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 241 [2019-11-20 10:20:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:08,522 INFO L225 Difference]: With dead ends: 341 [2019-11-20 10:20:08,522 INFO L226 Difference]: Without dead ends: 300 [2019-11-20 10:20:08,523 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 257 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2019-11-20 10:20:08,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2019-11-20 10:20:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 294. [2019-11-20 10:20:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-11-20 10:20:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 312 transitions. [2019-11-20 10:20:08,534 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 312 transitions. Word has length 241 [2019-11-20 10:20:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:08,534 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 312 transitions. [2019-11-20 10:20:08,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-20 10:20:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 312 transitions. [2019-11-20 10:20:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-11-20 10:20:08,537 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:08,537 INFO L410 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1] [2019-11-20 10:20:08,741 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:08,741 INFO L410 AbstractCegarLoop]: === Iteration 27 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:08,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:08,742 INFO L82 PathProgramCache]: Analyzing trace with hash -843307890, now seen corresponding path program 17 times [2019-11-20 10:20:08,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:08,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285423390] [2019-11-20 10:20:08,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2019-11-20 10:20:10,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285423390] [2019-11-20 10:20:10,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082606355] [2019-11-20 10:20:10,174 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:10,295 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2019-11-20 10:20:10,295 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:20:10,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-20 10:20:10,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2019-11-20 10:20:10,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:10,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-11-20 10:20:10,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858352377] [2019-11-20 10:20:10,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-20 10:20:10,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:10,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-20 10:20:10,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2019-11-20 10:20:10,917 INFO L87 Difference]: Start difference. First operand 294 states and 312 transitions. Second operand 40 states. [2019-11-20 10:20:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:11,110 INFO L93 Difference]: Finished difference Result 348 states and 378 transitions. [2019-11-20 10:20:11,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-20 10:20:11,110 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 253 [2019-11-20 10:20:11,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:11,113 INFO L225 Difference]: With dead ends: 348 [2019-11-20 10:20:11,113 INFO L226 Difference]: Without dead ends: 307 [2019-11-20 10:20:11,114 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 [2019-11-20 10:20:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2019-11-20 10:20:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2019-11-20 10:20:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-11-20 10:20:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 319 transitions. [2019-11-20 10:20:11,125 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 319 transitions. Word has length 253 [2019-11-20 10:20:11,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:11,125 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 319 transitions. [2019-11-20 10:20:11,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-20 10:20:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 319 transitions. [2019-11-20 10:20:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2019-11-20 10:20:11,128 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:11,128 INFO L410 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1] [2019-11-20 10:20:11,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:11,333 INFO L410 AbstractCegarLoop]: === Iteration 28 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:11,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:11,333 INFO L82 PathProgramCache]: Analyzing trace with hash 186138364, now seen corresponding path program 18 times [2019-11-20 10:20:11,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:11,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576878865] [2019-11-20 10:20:11,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2019-11-20 10:20:12,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576878865] [2019-11-20 10:20:12,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164234359] [2019-11-20 10:20:12,906 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:12,994 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2019-11-20 10:20:12,994 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:20:12,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-20 10:20:13,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2019-11-20 10:20:13,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:13,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-11-20 10:20:13,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525212044] [2019-11-20 10:20:13,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-11-20 10:20:13,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:13,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-11-20 10:20:13,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2019-11-20 10:20:13,578 INFO L87 Difference]: Start difference. First operand 301 states and 319 transitions. Second operand 42 states. [2019-11-20 10:20:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:13,729 INFO L93 Difference]: Finished difference Result 355 states and 385 transitions. [2019-11-20 10:20:13,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-20 10:20:13,729 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 265 [2019-11-20 10:20:13,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:13,731 INFO L225 Difference]: With dead ends: 355 [2019-11-20 10:20:13,731 INFO L226 Difference]: Without dead ends: 314 [2019-11-20 10:20:13,732 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 283 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2019-11-20 10:20:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2019-11-20 10:20:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 308. [2019-11-20 10:20:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2019-11-20 10:20:13,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 326 transitions. [2019-11-20 10:20:13,742 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 326 transitions. Word has length 265 [2019-11-20 10:20:13,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:13,743 INFO L462 AbstractCegarLoop]: Abstraction has 308 states and 326 transitions. [2019-11-20 10:20:13,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-11-20 10:20:13,743 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 326 transitions. [2019-11-20 10:20:13,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-11-20 10:20:13,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:13,746 INFO L410 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1] [2019-11-20 10:20:13,949 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:13,950 INFO L410 AbstractCegarLoop]: === Iteration 29 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:13,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:13,950 INFO L82 PathProgramCache]: Analyzing trace with hash 420240905, now seen corresponding path program 19 times [2019-11-20 10:20:13,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:13,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481424146] [2019-11-20 10:20:13,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-20 10:20:15,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481424146] [2019-11-20 10:20:15,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068802250] [2019-11-20 10:20:15,573 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:15,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-20 10:20:15,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-20 10:20:16,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:16,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2019-11-20 10:20:16,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982957814] [2019-11-20 10:20:16,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-11-20 10:20:16,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:16,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-11-20 10:20:16,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2019-11-20 10:20:16,260 INFO L87 Difference]: Start difference. First operand 308 states and 326 transitions. Second operand 44 states. [2019-11-20 10:20:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:16,461 INFO L93 Difference]: Finished difference Result 362 states and 392 transitions. [2019-11-20 10:20:16,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-20 10:20:16,462 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 242 [2019-11-20 10:20:16,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:16,464 INFO L225 Difference]: With dead ends: 362 [2019-11-20 10:20:16,464 INFO L226 Difference]: Without dead ends: 321 [2019-11-20 10:20:16,466 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 261 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2019-11-20 10:20:16,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2019-11-20 10:20:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 315. [2019-11-20 10:20:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-11-20 10:20:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 333 transitions. [2019-11-20 10:20:16,479 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 333 transitions. Word has length 242 [2019-11-20 10:20:16,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:16,479 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 333 transitions. [2019-11-20 10:20:16,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-11-20 10:20:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 333 transitions. [2019-11-20 10:20:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-11-20 10:20:16,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:16,482 INFO L410 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1] [2019-11-20 10:20:16,682 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:16,682 INFO L410 AbstractCegarLoop]: === Iteration 30 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:16,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:16,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2063192260, now seen corresponding path program 20 times [2019-11-20 10:20:16,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:16,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924506312] [2019-11-20 10:20:16,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2019-11-20 10:20:18,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924506312] [2019-11-20 10:20:18,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888514741] [2019-11-20 10:20:18,463 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:18,536 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:20:18,536 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:20:18,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 43 conjunts are in the unsatisfiable core [2019-11-20 10:20:18,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2019-11-20 10:20:19,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:19,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-11-20 10:20:19,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003373792] [2019-11-20 10:20:19,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-11-20 10:20:19,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:19,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-11-20 10:20:19,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 10:20:19,174 INFO L87 Difference]: Start difference. First operand 315 states and 333 transitions. Second operand 46 states. [2019-11-20 10:20:19,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:19,409 INFO L93 Difference]: Finished difference Result 369 states and 399 transitions. [2019-11-20 10:20:19,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-20 10:20:19,409 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 289 [2019-11-20 10:20:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:19,412 INFO L225 Difference]: With dead ends: 369 [2019-11-20 10:20:19,412 INFO L226 Difference]: Without dead ends: 328 [2019-11-20 10:20:19,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 309 SyntacticMatches, 20 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 10:20:19,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-11-20 10:20:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 322. [2019-11-20 10:20:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2019-11-20 10:20:19,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 340 transitions. [2019-11-20 10:20:19,429 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 340 transitions. Word has length 289 [2019-11-20 10:20:19,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:19,430 INFO L462 AbstractCegarLoop]: Abstraction has 322 states and 340 transitions. [2019-11-20 10:20:19,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-11-20 10:20:19,430 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 340 transitions. [2019-11-20 10:20:19,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2019-11-20 10:20:19,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:19,432 INFO L410 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1] [2019-11-20 10:20:19,636 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:19,637 INFO L410 AbstractCegarLoop]: === Iteration 31 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:19,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:19,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1826765367, now seen corresponding path program 21 times [2019-11-20 10:20:19,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:19,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407893464] [2019-11-20 10:20:19,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2019-11-20 10:20:21,555 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407893464] [2019-11-20 10:20:21,555 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871228515] [2019-11-20 10:20:21,555 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:21,640 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-11-20 10:20:21,640 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:20:21,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-20 10:20:21,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2019-11-20 10:20:22,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:22,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-11-20 10:20:22,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187034658] [2019-11-20 10:20:22,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-11-20 10:20:22,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:22,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-11-20 10:20:22,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-11-20 10:20:22,165 INFO L87 Difference]: Start difference. First operand 322 states and 340 transitions. Second operand 48 states. [2019-11-20 10:20:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:22,382 INFO L93 Difference]: Finished difference Result 376 states and 406 transitions. [2019-11-20 10:20:22,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-11-20 10:20:22,383 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 266 [2019-11-20 10:20:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:22,385 INFO L225 Difference]: With dead ends: 376 [2019-11-20 10:20:22,386 INFO L226 Difference]: Without dead ends: 335 [2019-11-20 10:20:22,387 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 287 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-11-20 10:20:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2019-11-20 10:20:22,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 329. [2019-11-20 10:20:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2019-11-20 10:20:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 347 transitions. [2019-11-20 10:20:22,401 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 347 transitions. Word has length 266 [2019-11-20 10:20:22,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:22,402 INFO L462 AbstractCegarLoop]: Abstraction has 329 states and 347 transitions. [2019-11-20 10:20:22,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-11-20 10:20:22,402 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 347 transitions. [2019-11-20 10:20:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2019-11-20 10:20:22,406 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:22,406 INFO L410 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2019-11-20 10:20:22,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:22,613 INFO L410 AbstractCegarLoop]: === Iteration 32 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:22,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:22,614 INFO L82 PathProgramCache]: Analyzing trace with hash 338825084, now seen corresponding path program 22 times [2019-11-20 10:20:22,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:22,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804629783] [2019-11-20 10:20:22,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2019-11-20 10:20:24,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804629783] [2019-11-20 10:20:24,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331761463] [2019-11-20 10:20:24,730 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:24,815 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:20:24,816 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:20:24,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-20 10:20:24,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2019-11-20 10:20:25,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:25,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2019-11-20 10:20:25,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924406797] [2019-11-20 10:20:25,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-11-20 10:20:25,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:25,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-11-20 10:20:25,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2019-11-20 10:20:25,452 INFO L87 Difference]: Start difference. First operand 329 states and 347 transitions. Second operand 50 states. [2019-11-20 10:20:25,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:25,638 INFO L93 Difference]: Finished difference Result 383 states and 413 transitions. [2019-11-20 10:20:25,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-11-20 10:20:25,638 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 313 [2019-11-20 10:20:25,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:25,640 INFO L225 Difference]: With dead ends: 383 [2019-11-20 10:20:25,640 INFO L226 Difference]: Without dead ends: 342 [2019-11-20 10:20:25,642 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 335 SyntacticMatches, 22 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2019-11-20 10:20:25,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2019-11-20 10:20:25,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2019-11-20 10:20:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-11-20 10:20:25,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 354 transitions. [2019-11-20 10:20:25,650 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 354 transitions. Word has length 313 [2019-11-20 10:20:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:25,651 INFO L462 AbstractCegarLoop]: Abstraction has 336 states and 354 transitions. [2019-11-20 10:20:25,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-11-20 10:20:25,651 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 354 transitions. [2019-11-20 10:20:25,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-11-20 10:20:25,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:25,654 INFO L410 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1] [2019-11-20 10:20:25,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:25,857 INFO L410 AbstractCegarLoop]: === Iteration 33 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:25,857 INFO L82 PathProgramCache]: Analyzing trace with hash 117652873, now seen corresponding path program 23 times [2019-11-20 10:20:25,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:25,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588497486] [2019-11-20 10:20:25,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-20 10:20:27,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588497486] [2019-11-20 10:20:27,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442012463] [2019-11-20 10:20:27,857 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:27,941 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2019-11-20 10:20:27,941 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:20:27,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-20 10:20:27,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-20 10:20:28,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:20:28,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2019-11-20 10:20:28,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347036341] [2019-11-20 10:20:28,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-20 10:20:28,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:20:28,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-20 10:20:28,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2019-11-20 10:20:28,528 INFO L87 Difference]: Start difference. First operand 336 states and 354 transitions. Second operand 52 states. [2019-11-20 10:20:28,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:20:28,706 INFO L93 Difference]: Finished difference Result 390 states and 420 transitions. [2019-11-20 10:20:28,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-11-20 10:20:28,706 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 290 [2019-11-20 10:20:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:20:28,708 INFO L225 Difference]: With dead ends: 390 [2019-11-20 10:20:28,708 INFO L226 Difference]: Without dead ends: 349 [2019-11-20 10:20:28,709 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 313 SyntacticMatches, 23 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2019-11-20 10:20:28,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2019-11-20 10:20:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 343. [2019-11-20 10:20:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-11-20 10:20:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 361 transitions. [2019-11-20 10:20:28,718 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 361 transitions. Word has length 290 [2019-11-20 10:20:28,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:20:28,718 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 361 transitions. [2019-11-20 10:20:28,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-20 10:20:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 361 transitions. [2019-11-20 10:20:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2019-11-20 10:20:28,721 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:20:28,721 INFO L410 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1] [2019-11-20 10:20:28,924 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:20:28,925 INFO L410 AbstractCegarLoop]: === Iteration 34 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:20:28,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:20:28,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1252532292, now seen corresponding path program 24 times [2019-11-20 10:20:28,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:20:28,925 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676928412] [2019-11-20 10:20:28,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:20:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:20:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4572 backedges. 2072 proven. 1072 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-20 10:20:31,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676928412] [2019-11-20 10:20:31,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177585512] [2019-11-20 10:20:31,697 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1828f54-47a2-49e8-8ee7-9d6b4e34b5c1/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 [2019-11-20 10:20:31,808 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2019-11-20 10:20:31,808 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:20:31,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 51 conjunts are in the unsatisfiable core [2019-11-20 10:20:31,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:20:54,904 WARN L191 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-11-20 10:21:35,310 WARN L191 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 27 [2019-11-20 10:21:37,356 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 [2019-11-20 10:21:39,409 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 [2019-11-20 10:21:41,501 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 [2019-11-20 10:21:43,679 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 [2019-11-20 10:21:45,870 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 [2019-11-20 10:21:48,127 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 [2019-11-20 10:21:56,118 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 [2019-11-20 10:21:59,006 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 [2019-11-20 10:22:01,427 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 [2019-11-20 10:22:16,299 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-20 10:22:16,300 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: SMTLIBException [2019-11-20 10:22:16,500 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:22:16,501 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 [2019-11-20 10:22:16,504 INFO L168 Benchmark]: Toolchain (without parser) took 152247.22 ms. Allocated memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: 1.1 GB). Free memory was 950.1 MB in the beginning and 1.9 GB in the end (delta: -951.6 MB). Peak memory consumption was 165.6 MB. Max. memory is 11.5 GB. [2019-11-20 10:22:16,505 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:22:16,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -204.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-20 10:22:16,505 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:22:16,506 INFO L168 Benchmark]: Boogie Preprocessor took 17.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-20 10:22:16,506 INFO L168 Benchmark]: RCFGBuilder took 277.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:22:16,507 INFO L168 Benchmark]: TraceAbstraction took 151644.15 ms. Allocated memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: 955.8 MB). Free memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: -770.7 MB). Peak memory consumption was 185.0 MB. Max. memory is 11.5 GB. [2019-11-20 10:22:16,509 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 275.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -204.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 277.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 151644.15 ms. Allocated memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: 955.8 MB). Free memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: -770.7 MB). Peak memory consumption was 185.0 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...