./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.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_0a18b617-e174-47af-8155-3e12f5c1ea3e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 d28857c86a3c83fc75b1b8cf8125f1c52a370911 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 10:35:12,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:35:12,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:35:12,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:35:12,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:35:12,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:35:12,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:35:12,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:35:12,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:35:12,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:35:13,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:35:13,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:35:13,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:35:13,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:35:13,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:35:13,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:35:13,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:35:13,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:35:13,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:35:13,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:35:13,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:35:13,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:35:13,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:35:13,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:35:13,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:35:13,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:35:13,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:35:13,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:35:13,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:35:13,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:35:13,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:35:13,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:35:13,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:35:13,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:35:13,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:35:13,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:35:13,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:35:13,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:35:13,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:35:13,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:35:13,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:35:13,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-20 10:35:13,062 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:35:13,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:35:13,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:35:13,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:35:13,073 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:35:13,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:35:13,074 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 10:35:13,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:35:13,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:35:13,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:35:13,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:35:13,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:35:13,075 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-20 10:35:13,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:35:13,075 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:35:13,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:35:13,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:35:13,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:35:13,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:35:13,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:35:13,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:35:13,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:35:13,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:35:13,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:35:13,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:35:13,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 10:35:13,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:35:13,078 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_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2019-11-20 10:35:13,233 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:35:13,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:35:13,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:35:13,247 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:35:13,248 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:35:13,249 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2019-11-20 10:35:13,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/bin/uautomizer/data/53c8f300b/1f794736a6fa423f99f61338c83deb7f/FLAG2539e40bd [2019-11-20 10:35:13,718 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:35:13,720 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2019-11-20 10:35:13,726 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/bin/uautomizer/data/53c8f300b/1f794736a6fa423f99f61338c83deb7f/FLAG2539e40bd [2019-11-20 10:35:14,106 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/bin/uautomizer/data/53c8f300b/1f794736a6fa423f99f61338c83deb7f [2019-11-20 10:35:14,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:35:14,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:35:14,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:35:14,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:35:14,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:35:14,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:14" (1/1) ... [2019-11-20 10:35:14,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d1d9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14, skipping insertion in model container [2019-11-20 10:35:14,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:14" (1/1) ... [2019-11-20 10:35:14,134 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:35:14,149 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:35:14,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:35:14,344 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:35:14,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:35:14,438 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:35:14,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14 WrapperNode [2019-11-20 10:35:14,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:35:14,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:35:14,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:35:14,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:35:14,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14" (1/1) ... [2019-11-20 10:35:14,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14" (1/1) ... [2019-11-20 10:35:14,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:35:14,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:35:14,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:35:14,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:35:14,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14" (1/1) ... [2019-11-20 10:35:14,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14" (1/1) ... [2019-11-20 10:35:14,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14" (1/1) ... [2019-11-20 10:35:14,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14" (1/1) ... [2019-11-20 10:35:14,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14" (1/1) ... [2019-11-20 10:35:14,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14" (1/1) ... [2019-11-20 10:35:14,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14" (1/1) ... [2019-11-20 10:35:14,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:35:14,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:35:14,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:35:14,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:35:14,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:35:14,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:35:14,728 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:35:14,728 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 10:35:14,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:14 BoogieIcfgContainer [2019-11-20 10:35:14,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:35:14,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:35:14,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:35:14,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:35:14,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:35:14" (1/3) ... [2019-11-20 10:35:14,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d289e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:14, skipping insertion in model container [2019-11-20 10:35:14,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:14" (2/3) ... [2019-11-20 10:35:14,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d289e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:14, skipping insertion in model container [2019-11-20 10:35:14,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:14" (3/3) ... [2019-11-20 10:35:14,736 INFO L109 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn.c [2019-11-20 10:35:14,743 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:35:14,748 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-20 10:35:14,758 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-20 10:35:14,782 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:35:14,782 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:35:14,782 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:35:14,783 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:35:14,783 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:35:14,783 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:35:14,783 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:35:14,783 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:35:14,797 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-20 10:35:14,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 10:35:14,802 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:14,803 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 10:35:14,804 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:14,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:14,808 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-20 10:35:14,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:14,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088118657] [2019-11-20 10:35:14,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:15,005 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 10:35:15,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088118657] [2019-11-20 10:35:15,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:35:15,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 10:35:15,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362980744] [2019-11-20 10:35:15,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:35:15,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:15,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:35:15,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:35:15,053 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-20 10:35:15,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:15,104 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-20 10:35:15,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:35:15,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-11-20 10:35:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:15,116 INFO L225 Difference]: With dead ends: 20 [2019-11-20 10:35:15,116 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 10:35:15,119 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:35:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 10:35:15,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 10:35:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 10:35:15,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-20 10:35:15,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2019-11-20 10:35:15,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:15,148 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-20 10:35:15,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:35:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-20 10:35:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 10:35:15,149 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:15,149 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 10:35:15,150 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:15,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:15,150 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-11-20 10:35:15,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:15,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057585083] [2019-11-20 10:35:15,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:15,191 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 10:35:15,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057585083] [2019-11-20 10:35:15,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:35:15,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 10:35:15,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41001542] [2019-11-20 10:35:15,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:35:15,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:15,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:35:15,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:35:15,195 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-11-20 10:35:15,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:15,253 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-20 10:35:15,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 10:35:15,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-20 10:35:15,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:15,254 INFO L225 Difference]: With dead ends: 15 [2019-11-20 10:35:15,254 INFO L226 Difference]: Without dead ends: 14 [2019-11-20 10:35:15,255 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:35:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-20 10:35:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-11-20 10:35:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 10:35:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-20 10:35:15,259 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2019-11-20 10:35:15,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:15,259 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-20 10:35:15,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:35:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-20 10:35:15,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 10:35:15,260 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:15,260 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 10:35:15,260 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:15,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:15,260 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-20 10:35:15,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:15,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747024077] [2019-11-20 10:35:15,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:15,292 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 10:35:15,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747024077] [2019-11-20 10:35:15,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:35:15,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 10:35:15,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59584911] [2019-11-20 10:35:15,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:35:15,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:15,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:35:15,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:35:15,294 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-11-20 10:35:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:15,317 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-20 10:35:15,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:35:15,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-20 10:35:15,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:15,318 INFO L225 Difference]: With dead ends: 12 [2019-11-20 10:35:15,318 INFO L226 Difference]: Without dead ends: 11 [2019-11-20 10:35:15,319 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:35:15,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-20 10:35:15,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-20 10:35:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 10:35:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-20 10:35:15,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2019-11-20 10:35:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:15,322 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-20 10:35:15,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:35:15,323 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-20 10:35:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 10:35:15,323 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:15,323 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-20 10:35:15,324 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:15,324 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-20 10:35:15,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:15,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396309691] [2019-11-20 10:35:15,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:15,418 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 10:35:15,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396309691] [2019-11-20 10:35:15,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407161005] [2019-11-20 10:35:15,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:15,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 10:35:15,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:15,480 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 10:35:15,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:15,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-20 10:35:15,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162589770] [2019-11-20 10:35:15,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 10:35:15,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:15,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 10:35:15,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 10:35:15,486 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2019-11-20 10:35:15,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:15,549 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-20 10:35:15,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:35:15,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-20 10:35:15,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:15,551 INFO L225 Difference]: With dead ends: 18 [2019-11-20 10:35:15,551 INFO L226 Difference]: Without dead ends: 17 [2019-11-20 10:35:15,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:35:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-20 10:35:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-20 10:35:15,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 10:35:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-20 10:35:15,556 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2019-11-20 10:35:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:15,556 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-20 10:35:15,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 10:35:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-20 10:35:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-20 10:35:15,557 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:15,557 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-11-20 10:35:15,758 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:15,758 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:15,759 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-11-20 10:35:15,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:15,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577477111] [2019-11-20 10:35:15,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:15,907 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 10:35:15,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577477111] [2019-11-20 10:35:15,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487050814] [2019-11-20 10:35:15,907 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:15,952 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:35:15,952 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:15,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 10:35:15,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:15,959 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 10:35:15,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:15,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 10:35:15,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646235708] [2019-11-20 10:35:15,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 10:35:15,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:15,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 10:35:15,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:35:15,966 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2019-11-20 10:35:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:16,067 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-20 10:35:16,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 10:35:16,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-20 10:35:16,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:16,069 INFO L225 Difference]: With dead ends: 23 [2019-11-20 10:35:16,069 INFO L226 Difference]: Without dead ends: 22 [2019-11-20 10:35:16,070 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-11-20 10:35:16,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-20 10:35:16,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-11-20 10:35:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 10:35:16,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-11-20 10:35:16,074 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2019-11-20 10:35:16,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:16,074 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-11-20 10:35:16,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 10:35:16,075 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-11-20 10:35:16,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 10:35:16,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:16,075 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-11-20 10:35:16,284 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:16,284 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:16,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:16,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-11-20 10:35:16,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:16,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53330325] [2019-11-20 10:35:16,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:16,437 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 10:35:16,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53330325] [2019-11-20 10:35:16,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911986125] [2019-11-20 10:35:16,438 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:16,478 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 10:35:16,479 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:16,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 10:35:16,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:16,498 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 10:35:16,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:16,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-20 10:35:16,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789490758] [2019-11-20 10:35:16,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 10:35:16,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:16,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 10:35:16,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-20 10:35:16,508 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 10 states. [2019-11-20 10:35:16,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:16,617 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2019-11-20 10:35:16,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 10:35:16,618 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-20 10:35:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:16,618 INFO L225 Difference]: With dead ends: 28 [2019-11-20 10:35:16,619 INFO L226 Difference]: Without dead ends: 27 [2019-11-20 10:35:16,619 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-11-20 10:35:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-20 10:35:16,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-20 10:35:16,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 10:35:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-20 10:35:16,623 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2019-11-20 10:35:16,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:16,623 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-20 10:35:16,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 10:35:16,623 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-20 10:35:16,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 10:35:16,624 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:16,624 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-11-20 10:35:16,826 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:16,827 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:16,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:16,827 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2019-11-20 10:35:16,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:16,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803895845] [2019-11-20 10:35:16,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:17,012 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 10:35:17,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803895845] [2019-11-20 10:35:17,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080962414] [2019-11-20 10:35:17,013 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:17,052 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:35:17,052 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:17,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 10:35:17,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:17,067 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 10:35:17,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:17,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-20 10:35:17,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609107874] [2019-11-20 10:35:17,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 10:35:17,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:17,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 10:35:17,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-20 10:35:17,068 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2019-11-20 10:35:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:17,200 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2019-11-20 10:35:17,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 10:35:17,201 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2019-11-20 10:35:17,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:17,203 INFO L225 Difference]: With dead ends: 33 [2019-11-20 10:35:17,203 INFO L226 Difference]: Without dead ends: 32 [2019-11-20 10:35:17,203 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2019-11-20 10:35:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-20 10:35:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-11-20 10:35:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 10:35:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2019-11-20 10:35:17,215 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2019-11-20 10:35:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:17,216 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2019-11-20 10:35:17,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 10:35:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2019-11-20 10:35:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 10:35:17,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:17,219 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2019-11-20 10:35:17,419 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:17,420 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:17,420 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2019-11-20 10:35:17,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:17,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701757987] [2019-11-20 10:35:17,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:17,627 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 10:35:17,628 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701757987] [2019-11-20 10:35:17,628 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978125506] [2019-11-20 10:35:17,628 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:17,682 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-20 10:35:17,682 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:17,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 10:35:17,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:17,697 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 10:35:17,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:17,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-20 10:35:17,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293799849] [2019-11-20 10:35:17,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 10:35:17,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:17,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 10:35:17,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-11-20 10:35:17,700 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 14 states. [2019-11-20 10:35:17,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:17,845 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2019-11-20 10:35:17,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 10:35:17,846 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2019-11-20 10:35:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:17,847 INFO L225 Difference]: With dead ends: 38 [2019-11-20 10:35:17,847 INFO L226 Difference]: Without dead ends: 37 [2019-11-20 10:35:17,848 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2019-11-20 10:35:17,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-20 10:35:17,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-11-20 10:35:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-20 10:35:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2019-11-20 10:35:17,854 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2019-11-20 10:35:17,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:17,854 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2019-11-20 10:35:17,854 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 10:35:17,854 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2019-11-20 10:35:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 10:35:17,856 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:17,856 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2019-11-20 10:35:18,059 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:18,059 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:18,060 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2019-11-20 10:35:18,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:18,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852078504] [2019-11-20 10:35:18,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:18,256 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 10:35:18,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852078504] [2019-11-20 10:35:18,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470917221] [2019-11-20 10:35:18,257 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:18,311 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-20 10:35:18,311 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:18,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 10:35:18,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:18,325 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 10:35:18,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:18,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-20 10:35:18,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485683327] [2019-11-20 10:35:18,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 10:35:18,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:18,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 10:35:18,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-11-20 10:35:18,329 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 16 states. [2019-11-20 10:35:18,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:18,489 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2019-11-20 10:35:18,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 10:35:18,491 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2019-11-20 10:35:18,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:18,492 INFO L225 Difference]: With dead ends: 43 [2019-11-20 10:35:18,492 INFO L226 Difference]: Without dead ends: 42 [2019-11-20 10:35:18,493 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2019-11-20 10:35:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-20 10:35:18,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-11-20 10:35:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-20 10:35:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2019-11-20 10:35:18,504 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2019-11-20 10:35:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:18,505 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2019-11-20 10:35:18,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 10:35:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2019-11-20 10:35:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-20 10:35:18,509 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:18,509 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2019-11-20 10:35:18,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:18,710 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:18,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:18,710 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2019-11-20 10:35:18,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:18,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591507303] [2019-11-20 10:35:18,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:18,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591507303] [2019-11-20 10:35:18,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742191512] [2019-11-20 10:35:18,962 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:19,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 10:35:19,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:19,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:19,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-20 10:35:19,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528046435] [2019-11-20 10:35:19,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 10:35:19,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:19,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 10:35:19,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-11-20 10:35:19,052 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 18 states. [2019-11-20 10:35:19,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:19,274 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2019-11-20 10:35:19,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 10:35:19,274 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2019-11-20 10:35:19,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:19,275 INFO L225 Difference]: With dead ends: 48 [2019-11-20 10:35:19,275 INFO L226 Difference]: Without dead ends: 47 [2019-11-20 10:35:19,276 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2019-11-20 10:35:19,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-20 10:35:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-11-20 10:35:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-20 10:35:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2019-11-20 10:35:19,281 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 40 [2019-11-20 10:35:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:19,282 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2019-11-20 10:35:19,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 10:35:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2019-11-20 10:35:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-20 10:35:19,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:19,283 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2019-11-20 10:35:19,486 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:19,486 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:19,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:19,487 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2019-11-20 10:35:19,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:19,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099975692] [2019-11-20 10:35:19,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:19,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099975692] [2019-11-20 10:35:19,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929236898] [2019-11-20 10:35:19,772 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:19,827 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:35:19,827 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:19,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 10:35:19,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:19,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:19,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-20 10:35:19,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896804296] [2019-11-20 10:35:19,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-20 10:35:19,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:19,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-20 10:35:19,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-11-20 10:35:19,852 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 20 states. [2019-11-20 10:35:20,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:20,054 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2019-11-20 10:35:20,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 10:35:20,054 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 45 [2019-11-20 10:35:20,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:20,055 INFO L225 Difference]: With dead ends: 53 [2019-11-20 10:35:20,055 INFO L226 Difference]: Without dead ends: 52 [2019-11-20 10:35:20,056 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2019-11-20 10:35:20,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-20 10:35:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2019-11-20 10:35:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-20 10:35:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2019-11-20 10:35:20,068 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 45 [2019-11-20 10:35:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:20,068 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2019-11-20 10:35:20,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-20 10:35:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2019-11-20 10:35:20,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-20 10:35:20,071 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:20,071 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2019-11-20 10:35:20,274 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:20,276 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:20,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2019-11-20 10:35:20,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:20,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563292038] [2019-11-20 10:35:20,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:20,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563292038] [2019-11-20 10:35:20,555 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115912907] [2019-11-20 10:35:20,555 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:20,632 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-20 10:35:20,633 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:20,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-20 10:35:20,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:20,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:20,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-11-20 10:35:20,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679129491] [2019-11-20 10:35:20,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 10:35:20,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:20,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 10:35:20,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-11-20 10:35:20,667 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 22 states. [2019-11-20 10:35:20,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:20,923 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2019-11-20 10:35:20,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-20 10:35:20,923 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2019-11-20 10:35:20,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:20,924 INFO L225 Difference]: With dead ends: 58 [2019-11-20 10:35:20,925 INFO L226 Difference]: Without dead ends: 57 [2019-11-20 10:35:20,925 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2019-11-20 10:35:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-20 10:35:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2019-11-20 10:35:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-20 10:35:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2019-11-20 10:35:20,931 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 50 [2019-11-20 10:35:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:20,932 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2019-11-20 10:35:20,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 10:35:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2019-11-20 10:35:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-20 10:35:20,933 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:20,933 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-11-20 10:35:21,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:21,144 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:21,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:21,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2019-11-20 10:35:21,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:21,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594024785] [2019-11-20 10:35:21,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:21,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594024785] [2019-11-20 10:35:21,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253666929] [2019-11-20 10:35:21,467 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:21,512 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:35:21,512 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:21,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 10:35:21,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:21,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:21,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2019-11-20 10:35:21,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489169524] [2019-11-20 10:35:21,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-20 10:35:21,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:21,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-20 10:35:21,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-11-20 10:35:21,532 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 24 states. [2019-11-20 10:35:21,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:21,766 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2019-11-20 10:35:21,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-20 10:35:21,766 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2019-11-20 10:35:21,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:21,767 INFO L225 Difference]: With dead ends: 63 [2019-11-20 10:35:21,767 INFO L226 Difference]: Without dead ends: 62 [2019-11-20 10:35:21,768 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2019-11-20 10:35:21,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-20 10:35:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2019-11-20 10:35:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-20 10:35:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2019-11-20 10:35:21,774 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 55 [2019-11-20 10:35:21,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:21,775 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2019-11-20 10:35:21,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-20 10:35:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2019-11-20 10:35:21,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-20 10:35:21,776 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:21,776 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2019-11-20 10:35:21,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:21,980 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:21,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:21,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2019-11-20 10:35:21,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:21,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237981860] [2019-11-20 10:35:21,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:22,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237981860] [2019-11-20 10:35:22,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522757375] [2019-11-20 10:35:22,347 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:22,403 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-20 10:35:22,403 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:22,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 10:35:22,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:22,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:22,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2019-11-20 10:35:22,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973427018] [2019-11-20 10:35:22,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-20 10:35:22,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:22,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-20 10:35:22,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-11-20 10:35:22,431 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 26 states. [2019-11-20 10:35:22,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:22,775 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2019-11-20 10:35:22,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-20 10:35:22,776 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2019-11-20 10:35:22,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:22,776 INFO L225 Difference]: With dead ends: 68 [2019-11-20 10:35:22,776 INFO L226 Difference]: Without dead ends: 67 [2019-11-20 10:35:22,777 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2019-11-20 10:35:22,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-20 10:35:22,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2019-11-20 10:35:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-20 10:35:22,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2019-11-20 10:35:22,782 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 60 [2019-11-20 10:35:22,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:22,783 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2019-11-20 10:35:22,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-20 10:35:22,783 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2019-11-20 10:35:22,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-20 10:35:22,784 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:22,784 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2019-11-20 10:35:22,985 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:22,985 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:22,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:22,985 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2019-11-20 10:35:22,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:22,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970540731] [2019-11-20 10:35:22,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:23,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970540731] [2019-11-20 10:35:23,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448933560] [2019-11-20 10:35:23,414 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:23,488 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-20 10:35:23,488 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:23,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-20 10:35:23,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:23,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:23,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2019-11-20 10:35:23,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302342482] [2019-11-20 10:35:23,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-20 10:35:23,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:23,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-20 10:35:23,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2019-11-20 10:35:23,511 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 28 states. [2019-11-20 10:35:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:23,869 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2019-11-20 10:35:23,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-20 10:35:23,870 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 65 [2019-11-20 10:35:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:23,871 INFO L225 Difference]: With dead ends: 73 [2019-11-20 10:35:23,871 INFO L226 Difference]: Without dead ends: 72 [2019-11-20 10:35:23,872 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2019-11-20 10:35:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-20 10:35:23,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2019-11-20 10:35:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-20 10:35:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2019-11-20 10:35:23,877 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 65 [2019-11-20 10:35:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:23,878 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2019-11-20 10:35:23,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-20 10:35:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2019-11-20 10:35:23,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-20 10:35:23,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:23,879 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2019-11-20 10:35:24,089 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:24,089 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:24,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:24,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2019-11-20 10:35:24,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:24,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978616263] [2019-11-20 10:35:24,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:24,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978616263] [2019-11-20 10:35:24,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873225115] [2019-11-20 10:35:24,534 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:24,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-20 10:35:24,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:24,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:24,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2019-11-20 10:35:24,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151872141] [2019-11-20 10:35:24,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-20 10:35:24,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:24,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-20 10:35:24,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2019-11-20 10:35:24,620 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 30 states. [2019-11-20 10:35:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:25,015 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2019-11-20 10:35:25,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-20 10:35:25,016 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2019-11-20 10:35:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:25,017 INFO L225 Difference]: With dead ends: 78 [2019-11-20 10:35:25,017 INFO L226 Difference]: Without dead ends: 77 [2019-11-20 10:35:25,018 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2019-11-20 10:35:25,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-11-20 10:35:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2019-11-20 10:35:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-20 10:35:25,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2019-11-20 10:35:25,031 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 70 [2019-11-20 10:35:25,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:25,032 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2019-11-20 10:35:25,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-20 10:35:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2019-11-20 10:35:25,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-20 10:35:25,033 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:25,033 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2019-11-20 10:35:25,234 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:25,234 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:25,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:25,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2019-11-20 10:35:25,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:25,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994777334] [2019-11-20 10:35:25,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:25,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994777334] [2019-11-20 10:35:25,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90802730] [2019-11-20 10:35:25,669 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:25,720 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:35:25,720 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:25,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-20 10:35:25,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:25,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:25,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2019-11-20 10:35:25,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454248222] [2019-11-20 10:35:25,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-11-20 10:35:25,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:25,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-11-20 10:35:25,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2019-11-20 10:35:25,752 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 32 states. [2019-11-20 10:35:26,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:26,093 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2019-11-20 10:35:26,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-20 10:35:26,093 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 75 [2019-11-20 10:35:26,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:26,094 INFO L225 Difference]: With dead ends: 83 [2019-11-20 10:35:26,094 INFO L226 Difference]: Without dead ends: 82 [2019-11-20 10:35:26,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2019-11-20 10:35:26,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-20 10:35:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2019-11-20 10:35:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-20 10:35:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2019-11-20 10:35:26,100 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 75 [2019-11-20 10:35:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:26,101 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2019-11-20 10:35:26,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-11-20 10:35:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2019-11-20 10:35:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-20 10:35:26,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:26,102 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2019-11-20 10:35:26,307 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:26,307 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:26,307 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2019-11-20 10:35:26,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:26,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449649705] [2019-11-20 10:35:26,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:26,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449649705] [2019-11-20 10:35:26,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114041677] [2019-11-20 10:35:26,830 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:26,889 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-20 10:35:26,889 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:26,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-20 10:35:26,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:26,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:26,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2019-11-20 10:35:26,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287436656] [2019-11-20 10:35:26,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-20 10:35:26,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:26,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-20 10:35:26,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 10:35:26,911 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 34 states. [2019-11-20 10:35:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:27,328 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2019-11-20 10:35:27,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-20 10:35:27,328 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 80 [2019-11-20 10:35:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:27,329 INFO L225 Difference]: With dead ends: 88 [2019-11-20 10:35:27,329 INFO L226 Difference]: Without dead ends: 87 [2019-11-20 10:35:27,331 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2019-11-20 10:35:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-11-20 10:35:27,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2019-11-20 10:35:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-20 10:35:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2019-11-20 10:35:27,335 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 80 [2019-11-20 10:35:27,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:27,336 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2019-11-20 10:35:27,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-20 10:35:27,336 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2019-11-20 10:35:27,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-20 10:35:27,337 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:27,337 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2019-11-20 10:35:27,537 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:27,537 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:27,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:27,538 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2019-11-20 10:35:27,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:27,538 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521848093] [2019-11-20 10:35:27,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:28,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521848093] [2019-11-20 10:35:28,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642962165] [2019-11-20 10:35:28,121 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:28,187 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:35:28,188 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:28,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-20 10:35:28,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:28,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:28,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2019-11-20 10:35:28,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322758524] [2019-11-20 10:35:28,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-20 10:35:28,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:28,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-20 10:35:28,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2019-11-20 10:35:28,214 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 36 states. [2019-11-20 10:35:28,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:28,612 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2019-11-20 10:35:28,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-20 10:35:28,612 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 85 [2019-11-20 10:35:28,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:28,613 INFO L225 Difference]: With dead ends: 93 [2019-11-20 10:35:28,613 INFO L226 Difference]: Without dead ends: 92 [2019-11-20 10:35:28,614 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2019-11-20 10:35:28,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-20 10:35:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2019-11-20 10:35:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-20 10:35:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2019-11-20 10:35:28,617 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 85 [2019-11-20 10:35:28,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:28,617 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2019-11-20 10:35:28,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-20 10:35:28,617 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2019-11-20 10:35:28,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-20 10:35:28,618 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:28,618 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2019-11-20 10:35:28,821 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:28,821 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:28,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:28,822 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2019-11-20 10:35:28,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:28,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625887181] [2019-11-20 10:35:28,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:29,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625887181] [2019-11-20 10:35:29,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003895130] [2019-11-20 10:35:29,594 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:29,720 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-20 10:35:29,720 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:29,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-20 10:35:29,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:29,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:29,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2019-11-20 10:35:29,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294230358] [2019-11-20 10:35:29,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-20 10:35:29,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:29,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-20 10:35:29,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2019-11-20 10:35:29,745 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 38 states. [2019-11-20 10:35:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:30,231 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2019-11-20 10:35:30,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-20 10:35:30,232 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 90 [2019-11-20 10:35:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:30,233 INFO L225 Difference]: With dead ends: 98 [2019-11-20 10:35:30,233 INFO L226 Difference]: Without dead ends: 97 [2019-11-20 10:35:30,234 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2019-11-20 10:35:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-11-20 10:35:30,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2019-11-20 10:35:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-11-20 10:35:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2019-11-20 10:35:30,237 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 90 [2019-11-20 10:35:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:30,238 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2019-11-20 10:35:30,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-20 10:35:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2019-11-20 10:35:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-20 10:35:30,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:30,239 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2019-11-20 10:35:30,439 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:30,439 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:30,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:30,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2019-11-20 10:35:30,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:30,440 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600556097] [2019-11-20 10:35:30,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:31,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600556097] [2019-11-20 10:35:31,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994759542] [2019-11-20 10:35:31,205 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:31,296 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-20 10:35:31,296 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:31,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-20 10:35:31,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:31,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:31,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2019-11-20 10:35:31,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725744306] [2019-11-20 10:35:31,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-20 10:35:31,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:31,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-20 10:35:31,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2019-11-20 10:35:31,321 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 40 states. [2019-11-20 10:35:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:31,814 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2019-11-20 10:35:31,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-20 10:35:31,814 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 95 [2019-11-20 10:35:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:31,815 INFO L225 Difference]: With dead ends: 103 [2019-11-20 10:35:31,815 INFO L226 Difference]: Without dead ends: 102 [2019-11-20 10:35:31,816 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2019-11-20 10:35:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-11-20 10:35:31,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2019-11-20 10:35:31,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-20 10:35:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2019-11-20 10:35:31,819 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 95 [2019-11-20 10:35:31,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:31,819 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2019-11-20 10:35:31,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-20 10:35:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2019-11-20 10:35:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-20 10:35:31,820 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:31,821 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2019-11-20 10:35:32,021 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:32,021 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:32,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:32,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2019-11-20 10:35:32,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:32,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231333284] [2019-11-20 10:35:32,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:32,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231333284] [2019-11-20 10:35:32,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118290719] [2019-11-20 10:35:32,706 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:32,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-20 10:35:32,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:32,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:32,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2019-11-20 10:35:32,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185727185] [2019-11-20 10:35:32,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-11-20 10:35:32,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:32,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-11-20 10:35:32,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2019-11-20 10:35:32,787 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 42 states. [2019-11-20 10:35:33,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:33,242 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2019-11-20 10:35:33,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-20 10:35:33,244 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 100 [2019-11-20 10:35:33,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:33,245 INFO L225 Difference]: With dead ends: 108 [2019-11-20 10:35:33,245 INFO L226 Difference]: Without dead ends: 107 [2019-11-20 10:35:33,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2019-11-20 10:35:33,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-20 10:35:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2019-11-20 10:35:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-20 10:35:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2019-11-20 10:35:33,249 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 100 [2019-11-20 10:35:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:33,249 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2019-11-20 10:35:33,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-11-20 10:35:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2019-11-20 10:35:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-20 10:35:33,250 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:33,250 INFO L410 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1] [2019-11-20 10:35:33,450 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:33,451 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:33,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:33,451 INFO L82 PathProgramCache]: Analyzing trace with hash -119266781, now seen corresponding path program 20 times [2019-11-20 10:35:33,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:33,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201336747] [2019-11-20 10:35:33,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:34,185 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201336747] [2019-11-20 10:35:34,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207646584] [2019-11-20 10:35:34,186 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:34,235 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:35:34,235 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:34,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 43 conjunts are in the unsatisfiable core [2019-11-20 10:35:34,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:34,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:34,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2019-11-20 10:35:34,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503155565] [2019-11-20 10:35:34,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-11-20 10:35:34,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:34,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-11-20 10:35:34,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2019-11-20 10:35:34,261 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 44 states. [2019-11-20 10:35:34,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:34,748 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2019-11-20 10:35:34,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-20 10:35:34,748 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 105 [2019-11-20 10:35:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:34,749 INFO L225 Difference]: With dead ends: 113 [2019-11-20 10:35:34,749 INFO L226 Difference]: Without dead ends: 112 [2019-11-20 10:35:34,750 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2019-11-20 10:35:34,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-20 10:35:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2019-11-20 10:35:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-20 10:35:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2019-11-20 10:35:34,754 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 105 [2019-11-20 10:35:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:34,754 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2019-11-20 10:35:34,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-11-20 10:35:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2019-11-20 10:35:34,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-20 10:35:34,755 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:34,755 INFO L410 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1] [2019-11-20 10:35:34,959 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:34,959 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:34,960 INFO L82 PathProgramCache]: Analyzing trace with hash 953284081, now seen corresponding path program 21 times [2019-11-20 10:35:34,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:34,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900251961] [2019-11-20 10:35:34,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:36,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900251961] [2019-11-20 10:35:36,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668658596] [2019-11-20 10:35:36,020 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:36,139 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-11-20 10:35:36,139 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:36,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-20 10:35:36,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:36,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:36,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2019-11-20 10:35:36,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325272708] [2019-11-20 10:35:36,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-11-20 10:35:36,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:36,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-11-20 10:35:36,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 10:35:36,169 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 46 states. [2019-11-20 10:35:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:36,842 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2019-11-20 10:35:36,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-11-20 10:35:36,842 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 110 [2019-11-20 10:35:36,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:36,843 INFO L225 Difference]: With dead ends: 118 [2019-11-20 10:35:36,844 INFO L226 Difference]: Without dead ends: 117 [2019-11-20 10:35:36,845 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2019-11-20 10:35:36,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-11-20 10:35:36,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2019-11-20 10:35:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-11-20 10:35:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2019-11-20 10:35:36,848 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 110 [2019-11-20 10:35:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:36,849 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2019-11-20 10:35:36,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-11-20 10:35:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2019-11-20 10:35:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-20 10:35:36,850 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:36,850 INFO L410 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2019-11-20 10:35:37,050 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:37,050 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:37,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 22 times [2019-11-20 10:35:37,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:37,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647623592] [2019-11-20 10:35:37,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:38,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647623592] [2019-11-20 10:35:38,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293495195] [2019-11-20 10:35:38,157 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:38,213 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:35:38,213 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:38,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-20 10:35:38,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:38,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:38,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2019-11-20 10:35:38,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856718689] [2019-11-20 10:35:38,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-11-20 10:35:38,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:38,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-11-20 10:35:38,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-11-20 10:35:38,244 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 48 states. [2019-11-20 10:35:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:38,894 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2019-11-20 10:35:38,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-11-20 10:35:38,894 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 115 [2019-11-20 10:35:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:38,895 INFO L225 Difference]: With dead ends: 123 [2019-11-20 10:35:38,895 INFO L226 Difference]: Without dead ends: 122 [2019-11-20 10:35:38,897 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2019-11-20 10:35:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-20 10:35:38,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2019-11-20 10:35:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-11-20 10:35:38,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2019-11-20 10:35:38,902 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 115 [2019-11-20 10:35:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:38,902 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2019-11-20 10:35:38,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-11-20 10:35:38,903 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2019-11-20 10:35:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-20 10:35:38,903 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:38,903 INFO L410 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1] [2019-11-20 10:35:39,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:39,106 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:39,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1642054351, now seen corresponding path program 23 times [2019-11-20 10:35:39,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:39,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520142902] [2019-11-20 10:35:39,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:40,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520142902] [2019-11-20 10:35:40,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735726253] [2019-11-20 10:35:40,325 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:40,519 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-11-20 10:35:40,519 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:40,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-20 10:35:40,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:40,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:40,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2019-11-20 10:35:40,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116796378] [2019-11-20 10:35:40,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-11-20 10:35:40,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:40,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-11-20 10:35:40,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2019-11-20 10:35:40,554 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 50 states. [2019-11-20 10:35:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:41,252 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2019-11-20 10:35:41,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-11-20 10:35:41,259 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 120 [2019-11-20 10:35:41,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:41,260 INFO L225 Difference]: With dead ends: 128 [2019-11-20 10:35:41,260 INFO L226 Difference]: Without dead ends: 127 [2019-11-20 10:35:41,261 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2019-11-20 10:35:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-11-20 10:35:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2019-11-20 10:35:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-11-20 10:35:41,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2019-11-20 10:35:41,265 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 120 [2019-11-20 10:35:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:41,265 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2019-11-20 10:35:41,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-11-20 10:35:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2019-11-20 10:35:41,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-20 10:35:41,266 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:41,266 INFO L410 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1] [2019-11-20 10:35:41,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:41,467 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:41,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1546480733, now seen corresponding path program 24 times [2019-11-20 10:35:41,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:41,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207155274] [2019-11-20 10:35:41,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:42,429 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207155274] [2019-11-20 10:35:42,429 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482509989] [2019-11-20 10:35:42,430 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:42,543 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-11-20 10:35:42,543 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:42,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 51 conjunts are in the unsatisfiable core [2019-11-20 10:35:42,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:42,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:42,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2019-11-20 10:35:42,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901343638] [2019-11-20 10:35:42,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-20 10:35:42,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:42,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-20 10:35:42,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2019-11-20 10:35:42,572 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 52 states. [2019-11-20 10:35:43,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:43,306 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2019-11-20 10:35:43,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-11-20 10:35:43,307 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 125 [2019-11-20 10:35:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:43,307 INFO L225 Difference]: With dead ends: 133 [2019-11-20 10:35:43,307 INFO L226 Difference]: Without dead ends: 132 [2019-11-20 10:35:43,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2019-11-20 10:35:43,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-11-20 10:35:43,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2019-11-20 10:35:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-20 10:35:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2019-11-20 10:35:43,311 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 125 [2019-11-20 10:35:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:43,311 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2019-11-20 10:35:43,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-20 10:35:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2019-11-20 10:35:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-20 10:35:43,312 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:43,312 INFO L410 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1] [2019-11-20 10:35:43,515 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:43,515 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:43,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:43,516 INFO L82 PathProgramCache]: Analyzing trace with hash -525437839, now seen corresponding path program 25 times [2019-11-20 10:35:43,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:43,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966376234] [2019-11-20 10:35:43,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:44,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966376234] [2019-11-20 10:35:44,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708112870] [2019-11-20 10:35:44,916 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:44,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 53 conjunts are in the unsatisfiable core [2019-11-20 10:35:44,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:45,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:45,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2019-11-20 10:35:45,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273434167] [2019-11-20 10:35:45,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-11-20 10:35:45,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:45,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-11-20 10:35:45,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2019-11-20 10:35:45,022 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 54 states. [2019-11-20 10:35:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:45,800 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2019-11-20 10:35:45,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-11-20 10:35:45,801 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 130 [2019-11-20 10:35:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:45,801 INFO L225 Difference]: With dead ends: 138 [2019-11-20 10:35:45,801 INFO L226 Difference]: Without dead ends: 137 [2019-11-20 10:35:45,802 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2019-11-20 10:35:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-11-20 10:35:45,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2019-11-20 10:35:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-11-20 10:35:45,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2019-11-20 10:35:45,806 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 130 [2019-11-20 10:35:45,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:45,806 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2019-11-20 10:35:45,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 54 states. [2019-11-20 10:35:45,806 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2019-11-20 10:35:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-20 10:35:45,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:45,807 INFO L410 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1] [2019-11-20 10:35:46,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:46,011 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:46,011 INFO L82 PathProgramCache]: Analyzing trace with hash 298116195, now seen corresponding path program 26 times [2019-11-20 10:35:46,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:46,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563432072] [2019-11-20 10:35:46,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:47,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563432072] [2019-11-20 10:35:47,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581602069] [2019-11-20 10:35:47,101 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:47,161 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:35:47,161 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:47,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 55 conjunts are in the unsatisfiable core [2019-11-20 10:35:47,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:47,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:47,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2019-11-20 10:35:47,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819017193] [2019-11-20 10:35:47,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-11-20 10:35:47,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:47,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-11-20 10:35:47,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2019-11-20 10:35:47,196 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 56 states. [2019-11-20 10:35:47,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:47,871 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2019-11-20 10:35:47,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-11-20 10:35:47,871 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 135 [2019-11-20 10:35:47,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:47,872 INFO L225 Difference]: With dead ends: 143 [2019-11-20 10:35:47,872 INFO L226 Difference]: Without dead ends: 142 [2019-11-20 10:35:47,873 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2019-11-20 10:35:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-20 10:35:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2019-11-20 10:35:47,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-11-20 10:35:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2019-11-20 10:35:47,882 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 135 [2019-11-20 10:35:47,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:47,882 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2019-11-20 10:35:47,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 56 states. [2019-11-20 10:35:47,882 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2019-11-20 10:35:47,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-20 10:35:47,883 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:47,883 INFO L410 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1] [2019-11-20 10:35:48,087 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:48,087 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:48,087 INFO L82 PathProgramCache]: Analyzing trace with hash 626039729, now seen corresponding path program 27 times [2019-11-20 10:35:48,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:48,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856058183] [2019-11-20 10:35:48,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:49,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856058183] [2019-11-20 10:35:49,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471578718] [2019-11-20 10:35:49,189 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:49,318 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2019-11-20 10:35:49,319 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:49,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 57 conjunts are in the unsatisfiable core [2019-11-20 10:35:49,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:49,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:49,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2019-11-20 10:35:49,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997806405] [2019-11-20 10:35:49,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 58 states [2019-11-20 10:35:49,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:49,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2019-11-20 10:35:49,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2019-11-20 10:35:49,357 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 58 states. [2019-11-20 10:35:50,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:50,211 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2019-11-20 10:35:50,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-11-20 10:35:50,211 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 140 [2019-11-20 10:35:50,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:50,212 INFO L225 Difference]: With dead ends: 148 [2019-11-20 10:35:50,212 INFO L226 Difference]: Without dead ends: 147 [2019-11-20 10:35:50,213 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2019-11-20 10:35:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-11-20 10:35:50,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2019-11-20 10:35:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-20 10:35:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2019-11-20 10:35:50,217 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 140 [2019-11-20 10:35:50,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:50,218 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2019-11-20 10:35:50,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 58 states. [2019-11-20 10:35:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2019-11-20 10:35:50,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-20 10:35:50,218 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:50,219 INFO L410 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1] [2019-11-20 10:35:50,430 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:50,430 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:50,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1553548579, now seen corresponding path program 28 times [2019-11-20 10:35:50,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:50,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021311009] [2019-11-20 10:35:50,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:51,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021311009] [2019-11-20 10:35:51,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850948630] [2019-11-20 10:35:51,891 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:51,967 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:35:51,967 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:51,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 59 conjunts are in the unsatisfiable core [2019-11-20 10:35:51,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:52,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:52,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2019-11-20 10:35:52,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045173246] [2019-11-20 10:35:52,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2019-11-20 10:35:52,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:52,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2019-11-20 10:35:52,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2019-11-20 10:35:52,009 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 60 states. [2019-11-20 10:35:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:52,991 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2019-11-20 10:35:52,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-11-20 10:35:52,992 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 145 [2019-11-20 10:35:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:52,993 INFO L225 Difference]: With dead ends: 153 [2019-11-20 10:35:52,993 INFO L226 Difference]: Without dead ends: 152 [2019-11-20 10:35:52,994 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2019-11-20 10:35:52,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-20 10:35:52,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2019-11-20 10:35:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-11-20 10:35:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2019-11-20 10:35:52,998 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 145 [2019-11-20 10:35:52,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:52,998 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2019-11-20 10:35:52,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 60 states. [2019-11-20 10:35:52,999 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2019-11-20 10:35:52,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-20 10:35:52,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:53,000 INFO L410 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1] [2019-11-20 10:35:53,200 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:53,200 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:53,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:53,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1747275023, now seen corresponding path program 29 times [2019-11-20 10:35:53,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:53,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159099925] [2019-11-20 10:35:53,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:35:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:54,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159099925] [2019-11-20 10:35:54,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256942816] [2019-11-20 10:35:54,568 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:35:54,788 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-11-20 10:35:54,789 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:35:54,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 61 conjunts are in the unsatisfiable core [2019-11-20 10:35:54,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:35:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:35:54,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:35:54,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2019-11-20 10:35:54,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506988114] [2019-11-20 10:35:54,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 62 states [2019-11-20 10:35:54,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:35:54,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2019-11-20 10:35:54,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2019-11-20 10:35:54,829 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 62 states. [2019-11-20 10:35:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:35:55,774 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2019-11-20 10:35:55,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-11-20 10:35:55,774 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 150 [2019-11-20 10:35:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:35:55,775 INFO L225 Difference]: With dead ends: 158 [2019-11-20 10:35:55,775 INFO L226 Difference]: Without dead ends: 157 [2019-11-20 10:35:55,776 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2019-11-20 10:35:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-11-20 10:35:55,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2019-11-20 10:35:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-20 10:35:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2019-11-20 10:35:55,780 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 150 [2019-11-20 10:35:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:35:55,780 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2019-11-20 10:35:55,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 62 states. [2019-11-20 10:35:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2019-11-20 10:35:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-20 10:35:55,781 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:35:55,781 INFO L410 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1] [2019-11-20 10:35:55,981 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:35:55,982 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 10:35:55,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:35:55,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1661225501, now seen corresponding path program 30 times [2019-11-20 10:35:55,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:35:55,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804284293] [2019-11-20 10:35:55,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:35:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 1 proven. 2294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:36:01,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804284293] [2019-11-20 10:36:01,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541270225] [2019-11-20 10:36:01,946 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/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 10:36:02,104 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2019-11-20 10:36:02,104 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:36:02,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 63 conjunts are in the unsatisfiable core [2019-11-20 10:36:02,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:36:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:36:07,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:36:07,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 62] total 183 [2019-11-20 10:36:07,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357617775] [2019-11-20 10:36:07,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 185 states [2019-11-20 10:36:07,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:36:07,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2019-11-20 10:36:07,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2321, Invalid=31719, Unknown=0, NotChecked=0, Total=34040 [2019-11-20 10:36:07,379 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 185 states. [2019-11-20 10:36:19,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:36:19,098 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2019-11-20 10:36:19,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2019-11-20 10:36:19,098 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 155 [2019-11-20 10:36:19,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:36:19,099 INFO L225 Difference]: With dead ends: 156 [2019-11-20 10:36:19,099 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 10:36:19,102 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23314 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=5110, Invalid=70790, Unknown=0, NotChecked=0, Total=75900 [2019-11-20 10:36:19,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 10:36:19,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 10:36:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 10:36:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 10:36:19,102 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2019-11-20 10:36:19,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:36:19,103 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:36:19,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 185 states. [2019-11-20 10:36:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 10:36:19,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 10:36:19,303 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:36:19,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 10:36:20,138 WARN L191 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 108 [2019-11-20 10:36:20,142 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2019-11-20 10:36:20,143 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 10:36:20,143 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2019-11-20 10:36:20,143 INFO L440 ceAbstractionStarter]: At program point L19(lines 18 20) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2019-11-20 10:36:20,143 INFO L444 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2019-11-20 10:36:20,143 INFO L444 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-11-20 10:36:20,144 INFO L440 ceAbstractionStarter]: At program point L7-2(lines 7 12) the Hoare annotation is: (let ((.cse1 (div ULTIMATE.start_mlog_~x 2)) (.cse0 (< 0 (+ ULTIMATE.start_mlog_~x 1))) (.cse2 (<= 0 ULTIMATE.start_mlog_~res~0))) (or (and .cse0 (<= (+ .cse1 ULTIMATE.start_mlog_~res~0) 30) .cse2) (and .cse2 (<= ULTIMATE.start_mlog_~res~0 0) (<= ULTIMATE.start_mlog_~x 2147483647)) (and .cse0 (<= (+ .cse1 (* 16777216 ULTIMATE.start_mlog_~res~0)) 117440511) .cse2) (and .cse0 (<= (+ .cse1 (* 256 ULTIMATE.start_mlog_~res~0)) 5887) .cse2) (and (<= (+ .cse1 (* 16 ULTIMATE.start_mlog_~res~0)) 431) .cse0 .cse2) (and .cse0 (<= (+ .cse1 (* 8192 ULTIMATE.start_mlog_~res~0)) 147455) .cse2) (and .cse0 .cse2 (<= (+ .cse1 (* 4194304 ULTIMATE.start_mlog_~res~0)) 37748735)) (and .cse0 .cse2 (<= (+ .cse1 (* 524288 ULTIMATE.start_mlog_~res~0)) 6291455)) (and .cse0 .cse2 (<= (+ .cse1 (* 67108864 ULTIMATE.start_mlog_~res~0)) 335544319)) (and (<= (+ .cse1 (* 131072 ULTIMATE.start_mlog_~res~0)) 1835007) .cse0 .cse2) (and .cse0 .cse2 (<= (+ .cse1 (* 2097152 ULTIMATE.start_mlog_~res~0)) 20971519)) (and (<= (+ .cse1 (* 4 ULTIMATE.start_mlog_~res~0)) 115) .cse0 .cse2) (and .cse0 (<= (+ .cse1 (* 2048 ULTIMATE.start_mlog_~res~0)) 40959) .cse2) (and (<= (+ .cse1 (* 512 ULTIMATE.start_mlog_~res~0)) 11263) .cse0 .cse2) (and .cse0 .cse2 (<= (+ .cse1 (* 32768 ULTIMATE.start_mlog_~res~0)) 524287)) (and .cse0 (<= (+ .cse1 (* 268435456 ULTIMATE.start_mlog_~res~0)) 805306367) .cse2) (and (<= (+ .cse1 (* 64 ULTIMATE.start_mlog_~res~0)) 1599) .cse0 .cse2))) [2019-11-20 10:36:20,144 INFO L444 ceAbstractionStarter]: For program point L7-3(lines 7 12) no Hoare annotation was computed. [2019-11-20 10:36:20,144 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2019-11-20 10:36:20,144 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2019-11-20 10:36:20,144 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 10:36:20,144 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 10:36:20,144 INFO L440 ceAbstractionStarter]: At program point L14(lines 3 16) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2019-11-20 10:36:20,144 INFO L444 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2019-11-20 10:36:20,144 INFO L444 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2019-11-20 10:36:20,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:36:20 BoogieIcfgContainer [2019-11-20 10:36:20,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:36:20,173 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:36:20,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:36:20,174 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:36:20,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:14" (3/4) ... [2019-11-20 10:36:20,178 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 10:36:20,196 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-20 10:36:20,196 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 10:36:20,234 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0a18b617-e174-47af-8155-3e12f5c1ea3e/bin/uautomizer/witness.graphml [2019-11-20 10:36:20,235 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:36:20,236 INFO L168 Benchmark]: Toolchain (without parser) took 66125.39 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 708.8 MB). Free memory was 944.7 MB in the beginning and 897.7 MB in the end (delta: 47.0 MB). Peak memory consumption was 755.9 MB. Max. memory is 11.5 GB. [2019-11-20 10:36:20,236 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:36:20,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -163.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 10:36:20,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:36:20,237 INFO L168 Benchmark]: Boogie Preprocessor took 23.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:36:20,237 INFO L168 Benchmark]: RCFGBuilder took 235.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 11.5 GB. [2019-11-20 10:36:20,238 INFO L168 Benchmark]: TraceAbstraction took 65442.82 ms. Allocated memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: 591.9 MB). Free memory was 1.1 GB in the beginning and 922.1 MB in the end (delta: 168.8 MB). Peak memory consumption was 760.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:36:20,238 INFO L168 Benchmark]: Witness Printer took 61.14 ms. Allocated memory is still 1.7 GB. Free memory was 922.1 MB in the beginning and 897.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-20 10:36:20,240 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -163.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 235.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 65442.82 ms. Allocated memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: 591.9 MB). Free memory was 1.1 GB in the beginning and 922.1 MB in the end (delta: 168.8 MB). Peak memory consumption was 760.7 MB. Max. memory is 11.5 GB. * Witness Printer took 61.14 ms. Allocated memory is still 1.7 GB. Free memory was 922.1 MB in the beginning and 897.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((0 < x + 1 && x / 2 + res <= 30) && 0 <= res) || ((0 <= res && res <= 0) && x <= 2147483647)) || ((0 < x + 1 && x / 2 + 16777216 * res <= 117440511) && 0 <= res)) || ((0 < x + 1 && x / 2 + 256 * res <= 5887) && 0 <= res)) || ((x / 2 + 16 * res <= 431 && 0 < x + 1) && 0 <= res)) || ((0 < x + 1 && x / 2 + 8192 * res <= 147455) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x / 2 + 4194304 * res <= 37748735)) || ((0 < x + 1 && 0 <= res) && x / 2 + 524288 * res <= 6291455)) || ((0 < x + 1 && 0 <= res) && x / 2 + 67108864 * res <= 335544319)) || ((x / 2 + 131072 * res <= 1835007 && 0 < x + 1) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x / 2 + 2097152 * res <= 20971519)) || ((x / 2 + 4 * res <= 115 && 0 < x + 1) && 0 <= res)) || ((0 < x + 1 && x / 2 + 2048 * res <= 40959) && 0 <= res)) || ((x / 2 + 512 * res <= 11263 && 0 < x + 1) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x / 2 + 32768 * res <= 524287)) || ((0 < x + 1 && x / 2 + 268435456 * res <= 805306367) && 0 <= res)) || ((x / 2 + 64 * res <= 1599 && 0 < x + 1) && 0 <= res) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 65.3s, OverallIterations: 33, TraceHistogramMax: 31, AutomataDifference: 24.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, HoareTripleCheckerStatistics: 133 SDtfs, 2085 SDslu, 2101 SDs, 0 SdLazy, 15599 SolverSat, 327 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4059 GetRequests, 2385 SyntacticMatches, 0 SemanticMatches, 1674 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36364 ImplicationChecksByTransitivity, 41.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 33 MinimizatonAttempts, 31 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 303 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 700 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 29.3s InterpolantComputationTime, 4964 NumberOfCodeBlocks, 4964 NumberOfCodeBlocksAsserted, 323 NumberOfCheckSat, 4901 ConstructedInterpolants, 0 QuantifiedInterpolants, 1680097 SizeOfPredicates, 495 NumberOfNonLiveVariables, 5655 ConjunctsInSsa, 1020 ConjunctsInUnsatCore, 63 InterpolantComputations, 3 PerfectInterpolantSequences, 1/48670 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...