./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.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_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 0455ba49274114922cfe1b7739d9cb0a89e6c868 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 00:14:11,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:14:11,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:14:11,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:14:11,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:14:11,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:14:11,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:14:11,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:14:11,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:14:11,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:14:11,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:14:11,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:14:11,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:14:11,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:14:11,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:14:11,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:14:11,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:14:11,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:14:11,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:14:11,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:14:11,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:14:11,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:14:11,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:14:11,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:14:11,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:14:11,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:14:11,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:14:11,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:14:11,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:14:11,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:14:11,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:14:11,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:14:11,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:14:11,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:14:11,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:14:11,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:14:11,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:14:11,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:14:11,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:14:11,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:14:11,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:14:11,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-20 00:14:11,584 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:14:11,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:14:11,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:14:11,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:14:11,586 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:14:11,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:14:11,586 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 00:14:11,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:14:11,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:14:11,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 00:14:11,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 00:14:11,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 00:14:11,588 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-20 00:14:11,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:14:11,588 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:14:11,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 00:14:11,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:14:11,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:14:11,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 00:14:11,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 00:14:11,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:14:11,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:14:11,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 00:14:11,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 00:14:11,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:14:11,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 00:14:11,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 00:14:11,591 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_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2019-11-20 00:14:11,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:14:11,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:14:11,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:14:11,743 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:14:11,743 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:14:11,744 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2019-11-20 00:14:11,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/data/64650b164/74d64df903dc4dcc8d32f2bc3aef3885/FLAG938a49f7e [2019-11-20 00:14:12,156 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:14:12,157 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2019-11-20 00:14:12,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/data/64650b164/74d64df903dc4dcc8d32f2bc3aef3885/FLAG938a49f7e [2019-11-20 00:14:12,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/data/64650b164/74d64df903dc4dcc8d32f2bc3aef3885 [2019-11-20 00:14:12,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:14:12,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:14:12,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:14:12,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:14:12,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:14:12,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:12" (1/1) ... [2019-11-20 00:14:12,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1d3fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12, skipping insertion in model container [2019-11-20 00:14:12,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:12" (1/1) ... [2019-11-20 00:14:12,570 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:14:12,586 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:14:12,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:14:12,800 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:14:12,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:14:12,884 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:14:12,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12 WrapperNode [2019-11-20 00:14:12,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:14:12,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:14:12,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:14:12,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:14:12,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12" (1/1) ... [2019-11-20 00:14:12,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12" (1/1) ... [2019-11-20 00:14:12,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:14:12,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:14:12,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:14:12,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:14:12,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12" (1/1) ... [2019-11-20 00:14:12,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12" (1/1) ... [2019-11-20 00:14:12,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12" (1/1) ... [2019-11-20 00:14:12,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12" (1/1) ... [2019-11-20 00:14:12,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12" (1/1) ... [2019-11-20 00:14:12,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12" (1/1) ... [2019-11-20 00:14:12,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12" (1/1) ... [2019-11-20 00:14:12,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:14:12,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:14:12,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:14:12,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:14:12,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:14:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:14:13,201 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:14:13,201 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 00:14:13,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:14:13 BoogieIcfgContainer [2019-11-20 00:14:13,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:14:13,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 00:14:13,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 00:14:13,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 00:14:13,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:14:12" (1/3) ... [2019-11-20 00:14:13,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486db767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:14:13, skipping insertion in model container [2019-11-20 00:14:13,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:12" (2/3) ... [2019-11-20 00:14:13,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486db767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:14:13, skipping insertion in model container [2019-11-20 00:14:13,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:14:13" (3/3) ... [2019-11-20 00:14:13,209 INFO L109 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2019-11-20 00:14:13,218 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 00:14:13,223 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-20 00:14:13,233 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-20 00:14:13,253 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 00:14:13,253 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 00:14:13,254 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 00:14:13,254 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:14:13,254 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:14:13,254 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 00:14:13,254 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:14:13,254 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 00:14:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-20 00:14:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 00:14:13,274 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:13,274 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 00:14:13,275 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:13,280 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-11-20 00:14:13,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:13,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095063540] [2019-11-20 00:14:13,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:13,414 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 00:14:13,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095063540] [2019-11-20 00:14:13,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:14:13,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 00:14:13,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515330547] [2019-11-20 00:14:13,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:14:13,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:13,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:14:13,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:14:13,431 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-11-20 00:14:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:13,493 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2019-11-20 00:14:13,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:14:13,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 00:14:13,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:13,504 INFO L225 Difference]: With dead ends: 49 [2019-11-20 00:14:13,504 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 00:14:13,507 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:14:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 00:14:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-11-20 00:14:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-20 00:14:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-20 00:14:13,551 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2019-11-20 00:14:13,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:13,552 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-20 00:14:13,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:14:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-20 00:14:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 00:14:13,552 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:13,553 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 00:14:13,553 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:13,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:13,553 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2019-11-20 00:14:13,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:13,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820427691] [2019-11-20 00:14:13,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:13,570 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 00:14:13,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820427691] [2019-11-20 00:14:13,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:14:13,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-20 00:14:13,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438945556] [2019-11-20 00:14:13,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:14:13,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:13,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:14:13,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:14:13,573 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2019-11-20 00:14:13,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:13,615 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-11-20 00:14:13,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:14:13,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 00:14:13,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:13,616 INFO L225 Difference]: With dead ends: 21 [2019-11-20 00:14:13,616 INFO L226 Difference]: Without dead ends: 20 [2019-11-20 00:14:13,617 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:14:13,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-20 00:14:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-20 00:14:13,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-20 00:14:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-20 00:14:13,620 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2019-11-20 00:14:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:13,624 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-20 00:14:13,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:14:13,625 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-11-20 00:14:13,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 00:14:13,625 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:13,625 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 00:14:13,626 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:13,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:13,626 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2019-11-20 00:14:13,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:13,626 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056920595] [2019-11-20 00:14:13,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:13,640 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 00:14:13,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056920595] [2019-11-20 00:14:13,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:14:13,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-20 00:14:13,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314272781] [2019-11-20 00:14:13,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:14:13,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:13,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:14:13,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:14:13,642 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2019-11-20 00:14:13,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:13,662 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-11-20 00:14:13,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:14:13,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-20 00:14:13,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:13,663 INFO L225 Difference]: With dead ends: 25 [2019-11-20 00:14:13,663 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 00:14:13,664 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:14:13,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 00:14:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2019-11-20 00:14:13,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 00:14:13,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-20 00:14:13,668 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2019-11-20 00:14:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:13,668 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-20 00:14:13,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:14:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-20 00:14:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 00:14:13,669 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:13,669 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:14:13,670 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:13,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1365891962, now seen corresponding path program 1 times [2019-11-20 00:14:13,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:13,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049899453] [2019-11-20 00:14:13,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:13,697 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 00:14:13,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049899453] [2019-11-20 00:14:13,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:14:13,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-20 00:14:13,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881309210] [2019-11-20 00:14:13,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:14:13,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:13,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:14:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:14:13,699 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2019-11-20 00:14:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:13,719 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-11-20 00:14:13,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:14:13,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-20 00:14:13,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:13,720 INFO L225 Difference]: With dead ends: 18 [2019-11-20 00:14:13,720 INFO L226 Difference]: Without dead ends: 17 [2019-11-20 00:14:13,721 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:14:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-20 00:14:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-20 00:14:13,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-20 00:14:13,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-11-20 00:14:13,725 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2019-11-20 00:14:13,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:13,725 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-11-20 00:14:13,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:14:13,726 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-11-20 00:14:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 00:14:13,726 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:13,726 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:14:13,727 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:13,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:13,727 INFO L82 PathProgramCache]: Analyzing trace with hash -767237628, now seen corresponding path program 1 times [2019-11-20 00:14:13,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:13,728 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39059734] [2019-11-20 00:14:13,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:13,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39059734] [2019-11-20 00:14:13,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348344627] [2019-11-20 00:14:13,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:13,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 00:14:13,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:13,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 00:14:13,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2019-11-20 00:14:13,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084730131] [2019-11-20 00:14:13,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 00:14:13,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:13,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 00:14:13,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 00:14:13,853 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2019-11-20 00:14:13,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:13,892 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-11-20 00:14:13,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 00:14:13,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-20 00:14:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:13,893 INFO L225 Difference]: With dead ends: 26 [2019-11-20 00:14:13,893 INFO L226 Difference]: Without dead ends: 24 [2019-11-20 00:14:13,894 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 00:14:13,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-20 00:14:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-11-20 00:14:13,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 00:14:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-20 00:14:13,898 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 10 [2019-11-20 00:14:13,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:13,899 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-20 00:14:13,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 00:14:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-11-20 00:14:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 00:14:13,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:13,900 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 00:14:14,100 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:14,101 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash -767237820, now seen corresponding path program 1 times [2019-11-20 00:14:14,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:14,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679147052] [2019-11-20 00:14:14,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:14,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679147052] [2019-11-20 00:14:14,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070543441] [2019-11-20 00:14:14,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:14,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 00:14:14,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:14,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:14,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-20 00:14:14,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235562945] [2019-11-20 00:14:14,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 00:14:14,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:14,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 00:14:14,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 00:14:14,170 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 4 states. [2019-11-20 00:14:14,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:14,219 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2019-11-20 00:14:14,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 00:14:14,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-20 00:14:14,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:14,220 INFO L225 Difference]: With dead ends: 40 [2019-11-20 00:14:14,220 INFO L226 Difference]: Without dead ends: 39 [2019-11-20 00:14:14,221 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 00:14:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-20 00:14:14,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2019-11-20 00:14:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 00:14:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-11-20 00:14:14,227 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 10 [2019-11-20 00:14:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:14,227 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-11-20 00:14:14,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 00:14:14,228 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-11-20 00:14:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 00:14:14,228 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:14,228 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:14:14,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:14,429 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:14,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1419016103, now seen corresponding path program 1 times [2019-11-20 00:14:14,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:14,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091389717] [2019-11-20 00:14:14,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:14,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091389717] [2019-11-20 00:14:14,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586561515] [2019-11-20 00:14:14,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:14,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 00:14:14,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:14,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:14,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-11-20 00:14:14,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987069765] [2019-11-20 00:14:14,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 00:14:14,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:14,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 00:14:14,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 00:14:14,512 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 6 states. [2019-11-20 00:14:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:14,551 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2019-11-20 00:14:14,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 00:14:14,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-20 00:14:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:14,553 INFO L225 Difference]: With dead ends: 61 [2019-11-20 00:14:14,553 INFO L226 Difference]: Without dead ends: 34 [2019-11-20 00:14:14,553 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 00:14:14,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-20 00:14:14,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-11-20 00:14:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 00:14:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-11-20 00:14:14,558 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 12 [2019-11-20 00:14:14,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:14,559 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-11-20 00:14:14,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 00:14:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-11-20 00:14:14,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 00:14:14,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:14,560 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1] [2019-11-20 00:14:14,760 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:14,760 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:14,761 INFO L82 PathProgramCache]: Analyzing trace with hash -907820867, now seen corresponding path program 2 times [2019-11-20 00:14:14,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:14,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567158880] [2019-11-20 00:14:14,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:14,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567158880] [2019-11-20 00:14:14,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110561774] [2019-11-20 00:14:14,832 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:14,857 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:14:14,857 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:14,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:14:14,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:14,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:14,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-20 00:14:14,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593022659] [2019-11-20 00:14:14,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 00:14:14,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:14,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 00:14:14,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:14:14,865 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 5 states. [2019-11-20 00:14:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:14,897 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2019-11-20 00:14:14,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 00:14:14,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-20 00:14:14,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:14,898 INFO L225 Difference]: With dead ends: 36 [2019-11-20 00:14:14,899 INFO L226 Difference]: Without dead ends: 35 [2019-11-20 00:14:14,899 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:14:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-20 00:14:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-11-20 00:14:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 00:14:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-11-20 00:14:14,903 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 16 [2019-11-20 00:14:14,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:14,904 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-11-20 00:14:14,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 00:14:14,904 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-11-20 00:14:14,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 00:14:14,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:14,905 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1] [2019-11-20 00:14:15,105 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:15,106 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:15,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1586405002, now seen corresponding path program 3 times [2019-11-20 00:14:15,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:15,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161232201] [2019-11-20 00:14:15,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:15,178 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 00:14:15,178 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161232201] [2019-11-20 00:14:15,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404823390] [2019-11-20 00:14:15,179 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:15,215 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 00:14:15,215 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:15,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:14:15,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:15,225 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 00:14:15,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:15,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-20 00:14:15,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520293972] [2019-11-20 00:14:15,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 00:14:15,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:15,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 00:14:15,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 00:14:15,229 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 6 states. [2019-11-20 00:14:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:15,282 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2019-11-20 00:14:15,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 00:14:15,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-20 00:14:15,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:15,285 INFO L225 Difference]: With dead ends: 84 [2019-11-20 00:14:15,285 INFO L226 Difference]: Without dead ends: 83 [2019-11-20 00:14:15,285 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 00:14:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-20 00:14:15,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2019-11-20 00:14:15,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-20 00:14:15,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2019-11-20 00:14:15,299 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 22 [2019-11-20 00:14:15,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:15,300 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2019-11-20 00:14:15,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 00:14:15,300 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2019-11-20 00:14:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 00:14:15,301 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:15,301 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1] [2019-11-20 00:14:15,502 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:15,502 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:15,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:15,502 INFO L82 PathProgramCache]: Analyzing trace with hash -89664657, now seen corresponding path program 4 times [2019-11-20 00:14:15,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:15,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601892797] [2019-11-20 00:14:15,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:15,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601892797] [2019-11-20 00:14:15,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997337503] [2019-11-20 00:14:15,595 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:15,629 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:14:15,629 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:15,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 00:14:15,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:15,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:15,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-20 00:14:15,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2721471] [2019-11-20 00:14:15,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 00:14:15,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:15,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 00:14:15,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 00:14:15,638 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 7 states. [2019-11-20 00:14:15,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:15,717 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2019-11-20 00:14:15,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 00:14:15,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-11-20 00:14:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:15,719 INFO L225 Difference]: With dead ends: 145 [2019-11-20 00:14:15,719 INFO L226 Difference]: Without dead ends: 144 [2019-11-20 00:14:15,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 00:14:15,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-11-20 00:14:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 90. [2019-11-20 00:14:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-20 00:14:15,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2019-11-20 00:14:15,744 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 28 [2019-11-20 00:14:15,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:15,745 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2019-11-20 00:14:15,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 00:14:15,745 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2019-11-20 00:14:15,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 00:14:15,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:15,747 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1] [2019-11-20 00:14:15,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:15,951 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:15,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:15,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1835149044, now seen corresponding path program 2 times [2019-11-20 00:14:15,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:15,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517890643] [2019-11-20 00:14:15,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:16,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517890643] [2019-11-20 00:14:16,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341282967] [2019-11-20 00:14:16,012 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:16,045 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:14:16,046 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:16,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:14:16,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 00:14:16,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:16,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-20 00:14:16,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523913284] [2019-11-20 00:14:16,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 00:14:16,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:16,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 00:14:16,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 00:14:16,058 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand 7 states. [2019-11-20 00:14:16,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:16,097 INFO L93 Difference]: Finished difference Result 124 states and 141 transitions. [2019-11-20 00:14:16,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 00:14:16,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-11-20 00:14:16,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:16,098 INFO L225 Difference]: With dead ends: 124 [2019-11-20 00:14:16,098 INFO L226 Difference]: Without dead ends: 49 [2019-11-20 00:14:16,099 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 00:14:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-20 00:14:16,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-11-20 00:14:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-20 00:14:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2019-11-20 00:14:16,103 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 30 [2019-11-20 00:14:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:16,104 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2019-11-20 00:14:16,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 00:14:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2019-11-20 00:14:16,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 00:14:16,105 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:16,105 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1] [2019-11-20 00:14:16,309 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:16,309 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:16,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:16,310 INFO L82 PathProgramCache]: Analyzing trace with hash 661989032, now seen corresponding path program 5 times [2019-11-20 00:14:16,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:16,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618000074] [2019-11-20 00:14:16,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:16,410 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618000074] [2019-11-20 00:14:16,410 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852421395] [2019-11-20 00:14:16,411 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:16,444 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-20 00:14:16,444 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:16,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 00:14:16,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:16,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:16,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 00:14:16,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420205801] [2019-11-20 00:14:16,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 00:14:16,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:16,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 00:14:16,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-20 00:14:16,455 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 8 states. [2019-11-20 00:14:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:16,555 INFO L93 Difference]: Finished difference Result 130 states and 146 transitions. [2019-11-20 00:14:16,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 00:14:16,557 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-20 00:14:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:16,558 INFO L225 Difference]: With dead ends: 130 [2019-11-20 00:14:16,558 INFO L226 Difference]: Without dead ends: 129 [2019-11-20 00:14:16,558 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-20 00:14:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-11-20 00:14:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2019-11-20 00:14:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-11-20 00:14:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2019-11-20 00:14:16,579 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 34 [2019-11-20 00:14:16,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:16,579 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2019-11-20 00:14:16,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 00:14:16,579 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2019-11-20 00:14:16,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-20 00:14:16,582 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:16,582 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1] [2019-11-20 00:14:16,784 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:16,785 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:16,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:16,785 INFO L82 PathProgramCache]: Analyzing trace with hash 855337761, now seen corresponding path program 6 times [2019-11-20 00:14:16,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:16,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486407688] [2019-11-20 00:14:16,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:16,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486407688] [2019-11-20 00:14:16,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390718328] [2019-11-20 00:14:16,895 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:16,941 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-20 00:14:16,941 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:16,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:14:16,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:16,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:16,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-20 00:14:16,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59610638] [2019-11-20 00:14:16,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 00:14:16,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:16,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 00:14:16,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-20 00:14:16,954 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand 9 states. [2019-11-20 00:14:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:17,071 INFO L93 Difference]: Finished difference Result 221 states and 254 transitions. [2019-11-20 00:14:17,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 00:14:17,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2019-11-20 00:14:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:17,073 INFO L225 Difference]: With dead ends: 221 [2019-11-20 00:14:17,073 INFO L226 Difference]: Without dead ends: 220 [2019-11-20 00:14:17,073 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-20 00:14:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2019-11-20 00:14:17,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 132. [2019-11-20 00:14:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-11-20 00:14:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2019-11-20 00:14:17,093 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 40 [2019-11-20 00:14:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:17,093 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2019-11-20 00:14:17,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 00:14:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2019-11-20 00:14:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-20 00:14:17,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:17,094 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1] [2019-11-20 00:14:17,295 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:17,295 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash 74075198, now seen corresponding path program 3 times [2019-11-20 00:14:17,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:17,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643325364] [2019-11-20 00:14:17,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:17,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643325364] [2019-11-20 00:14:17,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715071085] [2019-11-20 00:14:17,388 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:17,414 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 00:14:17,414 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:17,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:14:17,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-11-20 00:14:17,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:17,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2019-11-20 00:14:17,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913963364] [2019-11-20 00:14:17,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 00:14:17,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:17,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 00:14:17,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-20 00:14:17,475 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand 12 states. [2019-11-20 00:14:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:17,544 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2019-11-20 00:14:17,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 00:14:17,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2019-11-20 00:14:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:17,545 INFO L225 Difference]: With dead ends: 175 [2019-11-20 00:14:17,545 INFO L226 Difference]: Without dead ends: 70 [2019-11-20 00:14:17,546 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-20 00:14:17,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-20 00:14:17,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2019-11-20 00:14:17,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-20 00:14:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2019-11-20 00:14:17,550 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 42 [2019-11-20 00:14:17,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:17,551 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2019-11-20 00:14:17,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 00:14:17,551 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2019-11-20 00:14:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-20 00:14:17,552 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:17,552 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1] [2019-11-20 00:14:17,753 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:17,753 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:17,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:17,754 INFO L82 PathProgramCache]: Analyzing trace with hash 714125530, now seen corresponding path program 7 times [2019-11-20 00:14:17,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:17,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642470276] [2019-11-20 00:14:17,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:17,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642470276] [2019-11-20 00:14:17,854 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026595625] [2019-11-20 00:14:17,854 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:17,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 00:14:17,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:17,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:17,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-20 00:14:17,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095219679] [2019-11-20 00:14:17,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 00:14:17,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:17,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 00:14:17,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-20 00:14:17,918 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 10 states. [2019-11-20 00:14:17,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:17,985 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2019-11-20 00:14:17,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 00:14:17,986 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2019-11-20 00:14:17,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:17,987 INFO L225 Difference]: With dead ends: 72 [2019-11-20 00:14:17,987 INFO L226 Difference]: Without dead ends: 71 [2019-11-20 00:14:17,987 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-20 00:14:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-20 00:14:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2019-11-20 00:14:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-20 00:14:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2019-11-20 00:14:17,990 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 46 [2019-11-20 00:14:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:17,991 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2019-11-20 00:14:17,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 00:14:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2019-11-20 00:14:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-20 00:14:17,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:17,992 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1] [2019-11-20 00:14:18,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:18,192 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:18,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1497430061, now seen corresponding path program 8 times [2019-11-20 00:14:18,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:18,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357017445] [2019-11-20 00:14:18,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:18,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357017445] [2019-11-20 00:14:18,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326570695] [2019-11-20 00:14:18,309 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:18,342 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:14:18,342 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:18,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 00:14:18,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:18,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:18,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-20 00:14:18,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592775362] [2019-11-20 00:14:18,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 00:14:18,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:18,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 00:14:18,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-20 00:14:18,356 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 11 states. [2019-11-20 00:14:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:18,466 INFO L93 Difference]: Finished difference Result 245 states and 278 transitions. [2019-11-20 00:14:18,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 00:14:18,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2019-11-20 00:14:18,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:18,470 INFO L225 Difference]: With dead ends: 245 [2019-11-20 00:14:18,470 INFO L226 Difference]: Without dead ends: 244 [2019-11-20 00:14:18,471 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-20 00:14:18,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-11-20 00:14:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 225. [2019-11-20 00:14:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-11-20 00:14:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 257 transitions. [2019-11-20 00:14:18,480 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 257 transitions. Word has length 52 [2019-11-20 00:14:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:18,480 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 257 transitions. [2019-11-20 00:14:18,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 00:14:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 257 transitions. [2019-11-20 00:14:18,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-20 00:14:18,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:18,482 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1] [2019-11-20 00:14:18,685 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:18,685 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:18,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1807450100, now seen corresponding path program 9 times [2019-11-20 00:14:18,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:18,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584830131] [2019-11-20 00:14:18,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:18,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584830131] [2019-11-20 00:14:18,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440097643] [2019-11-20 00:14:18,788 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:18,820 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-20 00:14:18,820 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:18,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 00:14:18,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:18,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:18,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-20 00:14:18,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080645742] [2019-11-20 00:14:18,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 00:14:18,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:18,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 00:14:18,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-20 00:14:18,835 INFO L87 Difference]: Start difference. First operand 225 states and 257 transitions. Second operand 12 states. [2019-11-20 00:14:18,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:18,953 INFO L93 Difference]: Finished difference Result 428 states and 494 transitions. [2019-11-20 00:14:18,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 00:14:18,954 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2019-11-20 00:14:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:18,956 INFO L225 Difference]: With dead ends: 428 [2019-11-20 00:14:18,957 INFO L226 Difference]: Without dead ends: 427 [2019-11-20 00:14:18,957 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-20 00:14:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-11-20 00:14:18,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 246. [2019-11-20 00:14:18,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-11-20 00:14:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2019-11-20 00:14:18,968 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 58 [2019-11-20 00:14:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:18,969 INFO L462 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2019-11-20 00:14:18,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 00:14:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2019-11-20 00:14:18,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-20 00:14:18,970 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:18,970 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1] [2019-11-20 00:14:19,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:19,181 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:19,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:19,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1024665989, now seen corresponding path program 10 times [2019-11-20 00:14:19,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:19,181 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418037610] [2019-11-20 00:14:19,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:19,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418037610] [2019-11-20 00:14:19,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989433274] [2019-11-20 00:14:19,315 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:19,349 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:14:19,349 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:19,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 00:14:19,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:19,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:19,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-20 00:14:19,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798627536] [2019-11-20 00:14:19,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 00:14:19,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:19,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 00:14:19,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-20 00:14:19,366 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand 13 states. [2019-11-20 00:14:19,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:19,472 INFO L93 Difference]: Finished difference Result 472 states and 546 transitions. [2019-11-20 00:14:19,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 00:14:19,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2019-11-20 00:14:19,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:19,477 INFO L225 Difference]: With dead ends: 472 [2019-11-20 00:14:19,477 INFO L226 Difference]: Without dead ends: 471 [2019-11-20 00:14:19,477 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-20 00:14:19,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-11-20 00:14:19,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 267. [2019-11-20 00:14:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-11-20 00:14:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 307 transitions. [2019-11-20 00:14:19,492 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 307 transitions. Word has length 64 [2019-11-20 00:14:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:19,493 INFO L462 AbstractCegarLoop]: Abstraction has 267 states and 307 transitions. [2019-11-20 00:14:19,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 00:14:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 307 transitions. [2019-11-20 00:14:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-20 00:14:19,494 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:19,494 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 8, 8, 8, 3, 3, 3, 1, 1] [2019-11-20 00:14:19,696 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:19,697 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:19,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:19,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1756468196, now seen corresponding path program 4 times [2019-11-20 00:14:19,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:19,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544511185] [2019-11-20 00:14:19,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:19,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544511185] [2019-11-20 00:14:19,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690432194] [2019-11-20 00:14:19,860 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:19,899 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:14:19,899 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:19,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 00:14:19,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 76 proven. 184 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 00:14:19,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:19,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2019-11-20 00:14:19,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262395895] [2019-11-20 00:14:19,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 00:14:19,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:19,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 00:14:19,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-20 00:14:19,929 INFO L87 Difference]: Start difference. First operand 267 states and 307 transitions. Second operand 13 states. [2019-11-20 00:14:20,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:20,034 INFO L93 Difference]: Finished difference Result 313 states and 359 transitions. [2019-11-20 00:14:20,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 00:14:20,035 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2019-11-20 00:14:20,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:20,036 INFO L225 Difference]: With dead ends: 313 [2019-11-20 00:14:20,036 INFO L226 Difference]: Without dead ends: 91 [2019-11-20 00:14:20,037 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-20 00:14:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-20 00:14:20,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2019-11-20 00:14:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-20 00:14:20,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2019-11-20 00:14:20,040 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 66 [2019-11-20 00:14:20,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:20,041 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2019-11-20 00:14:20,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 00:14:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2019-11-20 00:14:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-20 00:14:20,041 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:20,041 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1] [2019-11-20 00:14:20,247 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:20,247 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:20,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:20,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1856957378, now seen corresponding path program 11 times [2019-11-20 00:14:20,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:20,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334021163] [2019-11-20 00:14:20,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:20,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334021163] [2019-11-20 00:14:20,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685442576] [2019-11-20 00:14:20,408 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:20,455 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-20 00:14:20,455 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:20,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 00:14:20,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:20,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:20,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-20 00:14:20,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818522851] [2019-11-20 00:14:20,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 00:14:20,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:20,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 00:14:20,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-20 00:14:20,476 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand 14 states. [2019-11-20 00:14:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:20,623 INFO L93 Difference]: Finished difference Result 332 states and 377 transitions. [2019-11-20 00:14:20,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 00:14:20,623 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2019-11-20 00:14:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:20,625 INFO L225 Difference]: With dead ends: 332 [2019-11-20 00:14:20,625 INFO L226 Difference]: Without dead ends: 331 [2019-11-20 00:14:20,626 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-20 00:14:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2019-11-20 00:14:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 306. [2019-11-20 00:14:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2019-11-20 00:14:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 350 transitions. [2019-11-20 00:14:20,637 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 350 transitions. Word has length 70 [2019-11-20 00:14:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:20,637 INFO L462 AbstractCegarLoop]: Abstraction has 306 states and 350 transitions. [2019-11-20 00:14:20,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 00:14:20,637 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 350 transitions. [2019-11-20 00:14:20,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-20 00:14:20,638 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:20,638 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1] [2019-11-20 00:14:20,842 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:20,842 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:20,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:20,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1336389577, now seen corresponding path program 12 times [2019-11-20 00:14:20,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:20,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864616910] [2019-11-20 00:14:20,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:21,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864616910] [2019-11-20 00:14:21,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495394051] [2019-11-20 00:14:21,030 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:21,077 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-20 00:14:21,078 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:21,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 00:14:21,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:21,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:21,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-11-20 00:14:21,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018214004] [2019-11-20 00:14:21,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 00:14:21,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:21,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 00:14:21,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-20 00:14:21,119 INFO L87 Difference]: Start difference. First operand 306 states and 350 transitions. Second operand 15 states. [2019-11-20 00:14:21,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:21,309 INFO L93 Difference]: Finished difference Result 578 states and 668 transitions. [2019-11-20 00:14:21,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 00:14:21,310 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2019-11-20 00:14:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:21,313 INFO L225 Difference]: With dead ends: 578 [2019-11-20 00:14:21,313 INFO L226 Difference]: Without dead ends: 577 [2019-11-20 00:14:21,314 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-20 00:14:21,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2019-11-20 00:14:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 327. [2019-11-20 00:14:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2019-11-20 00:14:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 375 transitions. [2019-11-20 00:14:21,329 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 375 transitions. Word has length 76 [2019-11-20 00:14:21,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:21,330 INFO L462 AbstractCegarLoop]: Abstraction has 327 states and 375 transitions. [2019-11-20 00:14:21,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 00:14:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 375 transitions. [2019-11-20 00:14:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-11-20 00:14:21,331 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:21,331 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1] [2019-11-20 00:14:21,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:21,535 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:21,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:21,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1313411728, now seen corresponding path program 13 times [2019-11-20 00:14:21,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:21,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440946844] [2019-11-20 00:14:21,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:21,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440946844] [2019-11-20 00:14:21,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765959587] [2019-11-20 00:14:21,730 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:21,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 00:14:21,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:21,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:21,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-20 00:14:21,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843109676] [2019-11-20 00:14:21,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 00:14:21,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:21,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 00:14:21,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-20 00:14:21,798 INFO L87 Difference]: Start difference. First operand 327 states and 375 transitions. Second operand 16 states. [2019-11-20 00:14:21,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:21,993 INFO L93 Difference]: Finished difference Result 622 states and 720 transitions. [2019-11-20 00:14:21,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 00:14:21,994 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2019-11-20 00:14:21,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:21,998 INFO L225 Difference]: With dead ends: 622 [2019-11-20 00:14:21,998 INFO L226 Difference]: Without dead ends: 621 [2019-11-20 00:14:21,998 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-20 00:14:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-11-20 00:14:22,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 348. [2019-11-20 00:14:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2019-11-20 00:14:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 400 transitions. [2019-11-20 00:14:22,012 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 400 transitions. Word has length 82 [2019-11-20 00:14:22,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:22,012 INFO L462 AbstractCegarLoop]: Abstraction has 348 states and 400 transitions. [2019-11-20 00:14:22,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 00:14:22,013 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 400 transitions. [2019-11-20 00:14:22,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-20 00:14:22,014 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:22,014 INFO L410 BasicCegarLoop]: trace histogram [14, 13, 13, 11, 11, 11, 3, 3, 3, 1, 1] [2019-11-20 00:14:22,220 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:22,221 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:22,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:22,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1913708871, now seen corresponding path program 5 times [2019-11-20 00:14:22,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:22,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815648787] [2019-11-20 00:14:22,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 0 proven. 467 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:22,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815648787] [2019-11-20 00:14:22,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256178382] [2019-11-20 00:14:22,378 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:22,413 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-11-20 00:14:22,414 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:22,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 00:14:22,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 103 proven. 352 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 00:14:22,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:22,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2019-11-20 00:14:22,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428586121] [2019-11-20 00:14:22,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 00:14:22,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:22,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 00:14:22,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-20 00:14:22,431 INFO L87 Difference]: Start difference. First operand 348 states and 400 transitions. Second operand 16 states. [2019-11-20 00:14:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:22,521 INFO L93 Difference]: Finished difference Result 394 states and 452 transitions. [2019-11-20 00:14:22,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 00:14:22,522 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2019-11-20 00:14:22,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:22,523 INFO L225 Difference]: With dead ends: 394 [2019-11-20 00:14:22,523 INFO L226 Difference]: Without dead ends: 109 [2019-11-20 00:14:22,524 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-20 00:14:22,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-20 00:14:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2019-11-20 00:14:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-20 00:14:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2019-11-20 00:14:22,527 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 84 [2019-11-20 00:14:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:22,528 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2019-11-20 00:14:22,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 00:14:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2019-11-20 00:14:22,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-20 00:14:22,528 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:22,529 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1] [2019-11-20 00:14:22,733 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:22,733 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:22,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1372652567, now seen corresponding path program 14 times [2019-11-20 00:14:22,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:22,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660964731] [2019-11-20 00:14:22,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:22,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660964731] [2019-11-20 00:14:22,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066353034] [2019-11-20 00:14:22,913 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:22,958 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:14:22,959 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:22,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 00:14:22,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:22,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:22,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-11-20 00:14:22,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159174487] [2019-11-20 00:14:22,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-20 00:14:22,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:22,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-20 00:14:22,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-20 00:14:22,980 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand 17 states. [2019-11-20 00:14:23,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:23,236 INFO L93 Difference]: Finished difference Result 419 states and 476 transitions. [2019-11-20 00:14:23,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 00:14:23,237 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2019-11-20 00:14:23,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:23,239 INFO L225 Difference]: With dead ends: 419 [2019-11-20 00:14:23,239 INFO L226 Difference]: Without dead ends: 418 [2019-11-20 00:14:23,240 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-20 00:14:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2019-11-20 00:14:23,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 387. [2019-11-20 00:14:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2019-11-20 00:14:23,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 443 transitions. [2019-11-20 00:14:23,252 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 443 transitions. Word has length 88 [2019-11-20 00:14:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:23,252 INFO L462 AbstractCegarLoop]: Abstraction has 387 states and 443 transitions. [2019-11-20 00:14:23,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-20 00:14:23,253 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 443 transitions. [2019-11-20 00:14:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-20 00:14:23,253 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:23,253 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1] [2019-11-20 00:14:23,457 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:23,458 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:23,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:23,458 INFO L82 PathProgramCache]: Analyzing trace with hash 146181026, now seen corresponding path program 15 times [2019-11-20 00:14:23,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:23,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779756702] [2019-11-20 00:14:23,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:23,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779756702] [2019-11-20 00:14:23,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569497624] [2019-11-20 00:14:23,665 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:23,711 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-20 00:14:23,711 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:23,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 00:14:23,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:23,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:23,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-20 00:14:23,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225136449] [2019-11-20 00:14:23,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 00:14:23,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:23,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 00:14:23,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-20 00:14:23,735 INFO L87 Difference]: Start difference. First operand 387 states and 443 transitions. Second operand 18 states. [2019-11-20 00:14:23,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:23,972 INFO L93 Difference]: Finished difference Result 728 states and 842 transitions. [2019-11-20 00:14:23,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 00:14:23,973 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2019-11-20 00:14:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:23,977 INFO L225 Difference]: With dead ends: 728 [2019-11-20 00:14:23,977 INFO L226 Difference]: Without dead ends: 727 [2019-11-20 00:14:23,978 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-20 00:14:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-11-20 00:14:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 408. [2019-11-20 00:14:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2019-11-20 00:14:23,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 468 transitions. [2019-11-20 00:14:23,995 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 468 transitions. Word has length 94 [2019-11-20 00:14:23,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:23,996 INFO L462 AbstractCegarLoop]: Abstraction has 408 states and 468 transitions. [2019-11-20 00:14:23,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 00:14:23,996 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 468 transitions. [2019-11-20 00:14:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-20 00:14:23,997 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:23,997 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1] [2019-11-20 00:14:24,201 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:24,201 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:24,202 INFO L82 PathProgramCache]: Analyzing trace with hash -143151973, now seen corresponding path program 16 times [2019-11-20 00:14:24,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:24,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150276201] [2019-11-20 00:14:24,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:24,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150276201] [2019-11-20 00:14:24,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443156933] [2019-11-20 00:14:24,449 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:24,486 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:14:24,486 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:24,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 00:14:24,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:24,515 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:24,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:24,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-11-20 00:14:24,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428807862] [2019-11-20 00:14:24,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-20 00:14:24,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:24,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-20 00:14:24,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-20 00:14:24,518 INFO L87 Difference]: Start difference. First operand 408 states and 468 transitions. Second operand 19 states. [2019-11-20 00:14:24,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:24,740 INFO L93 Difference]: Finished difference Result 772 states and 894 transitions. [2019-11-20 00:14:24,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-20 00:14:24,741 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2019-11-20 00:14:24,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:24,745 INFO L225 Difference]: With dead ends: 772 [2019-11-20 00:14:24,745 INFO L226 Difference]: Without dead ends: 771 [2019-11-20 00:14:24,746 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-20 00:14:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2019-11-20 00:14:24,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 429. [2019-11-20 00:14:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-11-20 00:14:24,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 493 transitions. [2019-11-20 00:14:24,761 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 493 transitions. Word has length 100 [2019-11-20 00:14:24,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:24,761 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 493 transitions. [2019-11-20 00:14:24,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-20 00:14:24,761 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 493 transitions. [2019-11-20 00:14:24,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-20 00:14:24,762 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:24,762 INFO L410 BasicCegarLoop]: trace histogram [17, 16, 16, 14, 14, 14, 3, 3, 3, 1, 1] [2019-11-20 00:14:24,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:24,963 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:24,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:24,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1251901874, now seen corresponding path program 6 times [2019-11-20 00:14:24,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:24,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747000971] [2019-11-20 00:14:24,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:25,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747000971] [2019-11-20 00:14:25,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728659559] [2019-11-20 00:14:25,196 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:25,228 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-20 00:14:25,228 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:25,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:14:25,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 201 proven. 21 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2019-11-20 00:14:25,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:25,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5] total 22 [2019-11-20 00:14:25,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166276363] [2019-11-20 00:14:25,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-20 00:14:25,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:25,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-20 00:14:25,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-11-20 00:14:25,333 INFO L87 Difference]: Start difference. First operand 429 states and 493 transitions. Second operand 23 states. [2019-11-20 00:14:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:25,458 INFO L93 Difference]: Finished difference Result 484 states and 557 transitions. [2019-11-20 00:14:25,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-20 00:14:25,458 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 102 [2019-11-20 00:14:25,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:25,459 INFO L225 Difference]: With dead ends: 484 [2019-11-20 00:14:25,459 INFO L226 Difference]: Without dead ends: 136 [2019-11-20 00:14:25,460 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-11-20 00:14:25,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-11-20 00:14:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2019-11-20 00:14:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2019-11-20 00:14:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2019-11-20 00:14:25,465 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 102 [2019-11-20 00:14:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:25,465 INFO L462 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2019-11-20 00:14:25,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-20 00:14:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2019-11-20 00:14:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-20 00:14:25,466 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:25,467 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1] [2019-11-20 00:14:25,670 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:25,671 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:25,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:25,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1288728276, now seen corresponding path program 17 times [2019-11-20 00:14:25,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:25,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206937168] [2019-11-20 00:14:25,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:25,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206937168] [2019-11-20 00:14:25,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242663522] [2019-11-20 00:14:25,901 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:25,937 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-20 00:14:25,938 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:25,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 00:14:25,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:25,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:25,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-20 00:14:25,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693691643] [2019-11-20 00:14:25,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-20 00:14:25,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:25,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-20 00:14:25,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-20 00:14:25,983 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand 20 states. [2019-11-20 00:14:26,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:26,070 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2019-11-20 00:14:26,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 00:14:26,072 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 106 [2019-11-20 00:14:26,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:26,073 INFO L225 Difference]: With dead ends: 138 [2019-11-20 00:14:26,073 INFO L226 Difference]: Without dead ends: 137 [2019-11-20 00:14:26,073 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-20 00:14:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-11-20 00:14:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2019-11-20 00:14:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2019-11-20 00:14:26,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2019-11-20 00:14:26,078 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 106 [2019-11-20 00:14:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:26,078 INFO L462 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2019-11-20 00:14:26,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-20 00:14:26,078 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2019-11-20 00:14:26,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-20 00:14:26,079 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:26,079 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1] [2019-11-20 00:14:26,282 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:26,282 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:26,283 INFO L82 PathProgramCache]: Analyzing trace with hash -2142051763, now seen corresponding path program 18 times [2019-11-20 00:14:26,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:26,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919813412] [2019-11-20 00:14:26,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:26,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919813412] [2019-11-20 00:14:26,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877857604] [2019-11-20 00:14:26,535 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:26,579 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-20 00:14:26,580 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:26,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-20 00:14:26,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:26,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:26,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-11-20 00:14:26,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703499121] [2019-11-20 00:14:26,603 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-20 00:14:26,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:26,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-20 00:14:26,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-20 00:14:26,604 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand 21 states. [2019-11-20 00:14:26,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:26,917 INFO L93 Difference]: Finished difference Result 635 states and 725 transitions. [2019-11-20 00:14:26,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-20 00:14:26,918 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 112 [2019-11-20 00:14:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:26,921 INFO L225 Difference]: With dead ends: 635 [2019-11-20 00:14:26,921 INFO L226 Difference]: Without dead ends: 634 [2019-11-20 00:14:26,922 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-20 00:14:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-11-20 00:14:26,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 594. [2019-11-20 00:14:26,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-11-20 00:14:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 682 transitions. [2019-11-20 00:14:26,939 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 682 transitions. Word has length 112 [2019-11-20 00:14:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:26,939 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 682 transitions. [2019-11-20 00:14:26,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-20 00:14:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 682 transitions. [2019-11-20 00:14:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-20 00:14:26,941 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:26,941 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1] [2019-11-20 00:14:27,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:27,144 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:27,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:27,145 INFO L82 PathProgramCache]: Analyzing trace with hash -138078458, now seen corresponding path program 19 times [2019-11-20 00:14:27,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:27,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958287640] [2019-11-20 00:14:27,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:27,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958287640] [2019-11-20 00:14:27,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014054755] [2019-11-20 00:14:27,435 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:27,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-20 00:14:27,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:27,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:27,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-11-20 00:14:27,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087573791] [2019-11-20 00:14:27,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 00:14:27,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:27,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 00:14:27,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-20 00:14:27,517 INFO L87 Difference]: Start difference. First operand 594 states and 682 transitions. Second operand 22 states. [2019-11-20 00:14:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:27,783 INFO L93 Difference]: Finished difference Result 1129 states and 1308 transitions. [2019-11-20 00:14:27,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-20 00:14:27,784 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2019-11-20 00:14:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:27,791 INFO L225 Difference]: With dead ends: 1129 [2019-11-20 00:14:27,791 INFO L226 Difference]: Without dead ends: 1128 [2019-11-20 00:14:27,792 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-20 00:14:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2019-11-20 00:14:27,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 621. [2019-11-20 00:14:27,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-11-20 00:14:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 714 transitions. [2019-11-20 00:14:27,817 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 714 transitions. Word has length 118 [2019-11-20 00:14:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:27,818 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 714 transitions. [2019-11-20 00:14:27,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 00:14:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 714 transitions. [2019-11-20 00:14:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-20 00:14:27,819 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:27,820 INFO L410 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1] [2019-11-20 00:14:28,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:28,023 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:28,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:28,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1876878081, now seen corresponding path program 20 times [2019-11-20 00:14:28,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:28,024 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873058246] [2019-11-20 00:14:28,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:28,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873058246] [2019-11-20 00:14:28,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724519069] [2019-11-20 00:14:28,308 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:28,345 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:14:28,345 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:28,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 00:14:28,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:28,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:28,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2019-11-20 00:14:28,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150272668] [2019-11-20 00:14:28,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-20 00:14:28,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:28,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-20 00:14:28,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-11-20 00:14:28,371 INFO L87 Difference]: Start difference. First operand 621 states and 714 transitions. Second operand 23 states. [2019-11-20 00:14:28,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:28,657 INFO L93 Difference]: Finished difference Result 1185 states and 1374 transitions. [2019-11-20 00:14:28,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-20 00:14:28,657 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 124 [2019-11-20 00:14:28,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:28,663 INFO L225 Difference]: With dead ends: 1185 [2019-11-20 00:14:28,663 INFO L226 Difference]: Without dead ends: 1184 [2019-11-20 00:14:28,664 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-11-20 00:14:28,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2019-11-20 00:14:28,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 648. [2019-11-20 00:14:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-11-20 00:14:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 746 transitions. [2019-11-20 00:14:28,685 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 746 transitions. Word has length 124 [2019-11-20 00:14:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:28,686 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 746 transitions. [2019-11-20 00:14:28,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-20 00:14:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 746 transitions. [2019-11-20 00:14:28,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-20 00:14:28,687 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:28,687 INFO L410 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1] [2019-11-20 00:14:28,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:28,891 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:28,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:28,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1721041976, now seen corresponding path program 21 times [2019-11-20 00:14:28,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:28,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184342008] [2019-11-20 00:14:28,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:29,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184342008] [2019-11-20 00:14:29,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342499196] [2019-11-20 00:14:29,258 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:29,318 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-11-20 00:14:29,318 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:29,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 00:14:29,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:29,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:29,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2019-11-20 00:14:29,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702993954] [2019-11-20 00:14:29,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-20 00:14:29,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:29,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-20 00:14:29,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-11-20 00:14:29,354 INFO L87 Difference]: Start difference. First operand 648 states and 746 transitions. Second operand 24 states. [2019-11-20 00:14:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:29,715 INFO L93 Difference]: Finished difference Result 1241 states and 1440 transitions. [2019-11-20 00:14:29,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-20 00:14:29,715 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 130 [2019-11-20 00:14:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:29,721 INFO L225 Difference]: With dead ends: 1241 [2019-11-20 00:14:29,721 INFO L226 Difference]: Without dead ends: 1240 [2019-11-20 00:14:29,723 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-11-20 00:14:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2019-11-20 00:14:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 675. [2019-11-20 00:14:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2019-11-20 00:14:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 778 transitions. [2019-11-20 00:14:29,746 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 778 transitions. Word has length 130 [2019-11-20 00:14:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:29,747 INFO L462 AbstractCegarLoop]: Abstraction has 675 states and 778 transitions. [2019-11-20 00:14:29,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-20 00:14:29,747 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 778 transitions. [2019-11-20 00:14:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-20 00:14:29,748 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:29,748 INFO L410 BasicCegarLoop]: trace histogram [22, 21, 21, 18, 18, 18, 4, 4, 4, 1, 1] [2019-11-20 00:14:29,952 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:29,952 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:29,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1212648713, now seen corresponding path program 7 times [2019-11-20 00:14:29,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:29,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446662743] [2019-11-20 00:14:29,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:30,312 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446662743] [2019-11-20 00:14:30,312 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719081499] [2019-11-20 00:14:30,312 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:30,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-20 00:14:30,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 240 proven. 954 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-20 00:14:30,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:30,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 23 [2019-11-20 00:14:30,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762155155] [2019-11-20 00:14:30,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-20 00:14:30,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:30,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-20 00:14:30,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-11-20 00:14:30,393 INFO L87 Difference]: Start difference. First operand 675 states and 778 transitions. Second operand 24 states. [2019-11-20 00:14:30,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:30,498 INFO L93 Difference]: Finished difference Result 733 states and 844 transitions. [2019-11-20 00:14:30,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-20 00:14:30,500 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2019-11-20 00:14:30,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:30,501 INFO L225 Difference]: With dead ends: 733 [2019-11-20 00:14:30,501 INFO L226 Difference]: Without dead ends: 163 [2019-11-20 00:14:30,502 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-11-20 00:14:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2019-11-20 00:14:30,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2019-11-20 00:14:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-11-20 00:14:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2019-11-20 00:14:30,505 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 132 [2019-11-20 00:14:30,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:30,505 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2019-11-20 00:14:30,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-20 00:14:30,505 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2019-11-20 00:14:30,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-20 00:14:30,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:30,506 INFO L410 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1] [2019-11-20 00:14:30,706 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:30,706 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:30,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:30,707 INFO L82 PathProgramCache]: Analyzing trace with hash -511517519, now seen corresponding path program 22 times [2019-11-20 00:14:30,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:30,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100027242] [2019-11-20 00:14:30,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:31,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100027242] [2019-11-20 00:14:31,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820285017] [2019-11-20 00:14:31,009 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/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 00:14:31,061 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:14:31,062 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:31,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-20 00:14:31,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:31,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:31,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2019-11-20 00:14:31,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87639969] [2019-11-20 00:14:31,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-20 00:14:31,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-20 00:14:31,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-11-20 00:14:31,092 INFO L87 Difference]: Start difference. First operand 159 states and 163 transitions. Second operand 25 states. [2019-11-20 00:14:31,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:31,341 INFO L93 Difference]: Finished difference Result 775 states and 885 transitions. [2019-11-20 00:14:31,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-20 00:14:31,341 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 136 [2019-11-20 00:14:31,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:31,345 INFO L225 Difference]: With dead ends: 775 [2019-11-20 00:14:31,345 INFO L226 Difference]: Without dead ends: 774 [2019-11-20 00:14:31,346 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-11-20 00:14:31,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-11-20 00:14:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 726. [2019-11-20 00:14:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2019-11-20 00:14:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 834 transitions. [2019-11-20 00:14:31,363 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 834 transitions. Word has length 136 [2019-11-20 00:14:31,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:31,364 INFO L462 AbstractCegarLoop]: Abstraction has 726 states and 834 transitions. [2019-11-20 00:14:31,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-20 00:14:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 834 transitions. [2019-11-20 00:14:31,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-20 00:14:31,365 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:31,365 INFO L410 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1] [2019-11-20 00:14:31,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:31,569 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:31,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:31,569 INFO L82 PathProgramCache]: Analyzing trace with hash -109005206, now seen corresponding path program 23 times [2019-11-20 00:14:31,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:31,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602752329] [2019-11-20 00:14:31,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:31,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602752329] [2019-11-20 00:14:31,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170577177] [2019-11-20 00:14:31,996 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:32,055 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-11-20 00:14:32,055 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:32,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 00:14:32,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:32,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:32,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2019-11-20 00:14:32,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816521179] [2019-11-20 00:14:32,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-20 00:14:32,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:32,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-20 00:14:32,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-11-20 00:14:32,090 INFO L87 Difference]: Start difference. First operand 726 states and 834 transitions. Second operand 26 states. [2019-11-20 00:14:32,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:32,617 INFO L93 Difference]: Finished difference Result 1377 states and 1596 transitions. [2019-11-20 00:14:32,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-20 00:14:32,618 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 142 [2019-11-20 00:14:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:32,625 INFO L225 Difference]: With dead ends: 1377 [2019-11-20 00:14:32,625 INFO L226 Difference]: Without dead ends: 1376 [2019-11-20 00:14:32,627 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-11-20 00:14:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2019-11-20 00:14:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 753. [2019-11-20 00:14:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-11-20 00:14:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 866 transitions. [2019-11-20 00:14:32,653 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 866 transitions. Word has length 142 [2019-11-20 00:14:32,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:32,653 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 866 transitions. [2019-11-20 00:14:32,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-20 00:14:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 866 transitions. [2019-11-20 00:14:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-20 00:14:32,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:32,654 INFO L410 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1] [2019-11-20 00:14:32,858 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:32,859 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:32,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:32,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1034378909, now seen corresponding path program 24 times [2019-11-20 00:14:32,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:32,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807242964] [2019-11-20 00:14:32,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:33,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807242964] [2019-11-20 00:14:33,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008126738] [2019-11-20 00:14:33,304 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:33,366 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-11-20 00:14:33,366 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:33,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-20 00:14:33,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:33,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:33,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2019-11-20 00:14:33,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476396894] [2019-11-20 00:14:33,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-20 00:14:33,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:33,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-20 00:14:33,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-11-20 00:14:33,404 INFO L87 Difference]: Start difference. First operand 753 states and 866 transitions. Second operand 27 states. [2019-11-20 00:14:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:33,875 INFO L93 Difference]: Finished difference Result 1433 states and 1662 transitions. [2019-11-20 00:14:33,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-20 00:14:33,876 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 148 [2019-11-20 00:14:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:33,882 INFO L225 Difference]: With dead ends: 1433 [2019-11-20 00:14:33,882 INFO L226 Difference]: Without dead ends: 1432 [2019-11-20 00:14:33,883 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-11-20 00:14:33,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2019-11-20 00:14:33,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 780. [2019-11-20 00:14:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2019-11-20 00:14:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 898 transitions. [2019-11-20 00:14:33,907 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 898 transitions. Word has length 148 [2019-11-20 00:14:33,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:33,907 INFO L462 AbstractCegarLoop]: Abstraction has 780 states and 898 transitions. [2019-11-20 00:14:33,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-20 00:14:33,908 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 898 transitions. [2019-11-20 00:14:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-20 00:14:33,909 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:33,909 INFO L410 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1] [2019-11-20 00:14:34,112 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:34,112 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:34,113 INFO L82 PathProgramCache]: Analyzing trace with hash 872983964, now seen corresponding path program 25 times [2019-11-20 00:14:34,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:34,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608887512] [2019-11-20 00:14:34,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:34,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608887512] [2019-11-20 00:14:34,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102578343] [2019-11-20 00:14:34,574 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:34,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-20 00:14:34,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:34,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:34,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2019-11-20 00:14:34,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376309073] [2019-11-20 00:14:34,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-20 00:14:34,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:34,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-20 00:14:34,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-11-20 00:14:34,661 INFO L87 Difference]: Start difference. First operand 780 states and 898 transitions. Second operand 28 states. [2019-11-20 00:14:35,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:35,122 INFO L93 Difference]: Finished difference Result 1489 states and 1728 transitions. [2019-11-20 00:14:35,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-20 00:14:35,122 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2019-11-20 00:14:35,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:35,129 INFO L225 Difference]: With dead ends: 1489 [2019-11-20 00:14:35,130 INFO L226 Difference]: Without dead ends: 1488 [2019-11-20 00:14:35,130 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-11-20 00:14:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2019-11-20 00:14:35,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 807. [2019-11-20 00:14:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2019-11-20 00:14:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 930 transitions. [2019-11-20 00:14:35,153 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 930 transitions. Word has length 154 [2019-11-20 00:14:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:35,153 INFO L462 AbstractCegarLoop]: Abstraction has 807 states and 930 transitions. [2019-11-20 00:14:35,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-20 00:14:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 930 transitions. [2019-11-20 00:14:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-20 00:14:35,154 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:35,155 INFO L410 BasicCegarLoop]: trace histogram [26, 25, 25, 22, 22, 22, 4, 4, 4, 1, 1] [2019-11-20 00:14:35,358 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:35,358 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:35,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:35,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2022281875, now seen corresponding path program 8 times [2019-11-20 00:14:35,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:35,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272247184] [2019-11-20 00:14:35,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:35,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272247184] [2019-11-20 00:14:35,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731499215] [2019-11-20 00:14:35,825 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:35,876 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:14:35,877 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:35,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-20 00:14:35,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 292 proven. 1430 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-20 00:14:35,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:35,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 27 [2019-11-20 00:14:35,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303911539] [2019-11-20 00:14:35,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-20 00:14:35,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:35,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-20 00:14:35,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-11-20 00:14:35,946 INFO L87 Difference]: Start difference. First operand 807 states and 930 transitions. Second operand 28 states. [2019-11-20 00:14:36,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:36,072 INFO L93 Difference]: Finished difference Result 865 states and 996 transitions. [2019-11-20 00:14:36,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-20 00:14:36,073 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 156 [2019-11-20 00:14:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:36,074 INFO L225 Difference]: With dead ends: 865 [2019-11-20 00:14:36,074 INFO L226 Difference]: Without dead ends: 187 [2019-11-20 00:14:36,075 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-11-20 00:14:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-11-20 00:14:36,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2019-11-20 00:14:36,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2019-11-20 00:14:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2019-11-20 00:14:36,081 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 156 [2019-11-20 00:14:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:36,081 INFO L462 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2019-11-20 00:14:36,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-20 00:14:36,082 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2019-11-20 00:14:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-11-20 00:14:36,083 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:36,083 INFO L410 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1] [2019-11-20 00:14:36,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:36,286 INFO L410 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:36,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:36,286 INFO L82 PathProgramCache]: Analyzing trace with hash 868412181, now seen corresponding path program 26 times [2019-11-20 00:14:36,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:36,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284280879] [2019-11-20 00:14:36,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:36,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284280879] [2019-11-20 00:14:36,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295303323] [2019-11-20 00:14:36,779 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:36,826 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:14:36,826 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:36,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-20 00:14:36,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:36,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:36,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2019-11-20 00:14:36,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103367898] [2019-11-20 00:14:36,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-20 00:14:36,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:36,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-20 00:14:36,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-11-20 00:14:36,870 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand 29 states. [2019-11-20 00:14:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:37,247 INFO L93 Difference]: Finished difference Result 915 states and 1045 transitions. [2019-11-20 00:14:37,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-11-20 00:14:37,248 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 160 [2019-11-20 00:14:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:37,251 INFO L225 Difference]: With dead ends: 915 [2019-11-20 00:14:37,251 INFO L226 Difference]: Without dead ends: 914 [2019-11-20 00:14:37,252 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-11-20 00:14:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2019-11-20 00:14:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 858. [2019-11-20 00:14:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2019-11-20 00:14:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 986 transitions. [2019-11-20 00:14:37,269 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 986 transitions. Word has length 160 [2019-11-20 00:14:37,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:37,270 INFO L462 AbstractCegarLoop]: Abstraction has 858 states and 986 transitions. [2019-11-20 00:14:37,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-20 00:14:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 986 transitions. [2019-11-20 00:14:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-20 00:14:37,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:37,271 INFO L410 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1] [2019-11-20 00:14:37,474 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:37,474 INFO L410 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:37,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:37,475 INFO L82 PathProgramCache]: Analyzing trace with hash -588420658, now seen corresponding path program 27 times [2019-11-20 00:14:37,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:37,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734022555] [2019-11-20 00:14:37,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:38,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734022555] [2019-11-20 00:14:38,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171662574] [2019-11-20 00:14:38,056 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:38,125 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2019-11-20 00:14:38,126 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:38,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-20 00:14:38,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:38,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:38,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2019-11-20 00:14:38,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451654323] [2019-11-20 00:14:38,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-20 00:14:38,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:38,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-20 00:14:38,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-11-20 00:14:38,169 INFO L87 Difference]: Start difference. First operand 858 states and 986 transitions. Second operand 30 states. [2019-11-20 00:14:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:38,793 INFO L93 Difference]: Finished difference Result 1625 states and 1884 transitions. [2019-11-20 00:14:38,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-20 00:14:38,794 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 166 [2019-11-20 00:14:38,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:38,803 INFO L225 Difference]: With dead ends: 1625 [2019-11-20 00:14:38,803 INFO L226 Difference]: Without dead ends: 1624 [2019-11-20 00:14:38,804 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-11-20 00:14:38,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2019-11-20 00:14:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 885. [2019-11-20 00:14:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2019-11-20 00:14:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1018 transitions. [2019-11-20 00:14:38,828 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1018 transitions. Word has length 166 [2019-11-20 00:14:38,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:38,828 INFO L462 AbstractCegarLoop]: Abstraction has 885 states and 1018 transitions. [2019-11-20 00:14:38,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-20 00:14:38,828 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1018 transitions. [2019-11-20 00:14:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-20 00:14:38,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:38,830 INFO L410 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1] [2019-11-20 00:14:39,033 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:39,033 INFO L410 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:39,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:39,033 INFO L82 PathProgramCache]: Analyzing trace with hash 170015175, now seen corresponding path program 28 times [2019-11-20 00:14:39,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:39,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320878448] [2019-11-20 00:14:39,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:39,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320878448] [2019-11-20 00:14:39,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298662493] [2019-11-20 00:14:39,611 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:39,660 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:14:39,660 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:39,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 30 conjunts are in the unsatisfiable core [2019-11-20 00:14:39,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:39,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:39,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2019-11-20 00:14:39,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880818210] [2019-11-20 00:14:39,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-20 00:14:39,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:39,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-20 00:14:39,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-11-20 00:14:39,706 INFO L87 Difference]: Start difference. First operand 885 states and 1018 transitions. Second operand 31 states. [2019-11-20 00:14:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:40,140 INFO L93 Difference]: Finished difference Result 1681 states and 1950 transitions. [2019-11-20 00:14:40,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-11-20 00:14:40,140 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 172 [2019-11-20 00:14:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:40,148 INFO L225 Difference]: With dead ends: 1681 [2019-11-20 00:14:40,148 INFO L226 Difference]: Without dead ends: 1680 [2019-11-20 00:14:40,149 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-11-20 00:14:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2019-11-20 00:14:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 912. [2019-11-20 00:14:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2019-11-20 00:14:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1050 transitions. [2019-11-20 00:14:40,173 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1050 transitions. Word has length 172 [2019-11-20 00:14:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:40,173 INFO L462 AbstractCegarLoop]: Abstraction has 912 states and 1050 transitions. [2019-11-20 00:14:40,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-20 00:14:40,174 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1050 transitions. [2019-11-20 00:14:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-11-20 00:14:40,175 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:40,175 INFO L410 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1] [2019-11-20 00:14:40,378 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:40,379 INFO L410 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:40,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:40,379 INFO L82 PathProgramCache]: Analyzing trace with hash 506424064, now seen corresponding path program 29 times [2019-11-20 00:14:40,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:40,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451315339] [2019-11-20 00:14:40,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:40,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451315339] [2019-11-20 00:14:40,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240693087] [2019-11-20 00:14:40,915 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:40,974 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-11-20 00:14:40,974 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:40,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-20 00:14:40,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:41,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:41,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2019-11-20 00:14:41,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756583238] [2019-11-20 00:14:41,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-11-20 00:14:41,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:41,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-11-20 00:14:41,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-11-20 00:14:41,019 INFO L87 Difference]: Start difference. First operand 912 states and 1050 transitions. Second operand 32 states. [2019-11-20 00:14:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:41,500 INFO L93 Difference]: Finished difference Result 1737 states and 2016 transitions. [2019-11-20 00:14:41,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-20 00:14:41,505 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 178 [2019-11-20 00:14:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:41,514 INFO L225 Difference]: With dead ends: 1737 [2019-11-20 00:14:41,514 INFO L226 Difference]: Without dead ends: 1736 [2019-11-20 00:14:41,515 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-11-20 00:14:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2019-11-20 00:14:41,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 939. [2019-11-20 00:14:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2019-11-20 00:14:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1082 transitions. [2019-11-20 00:14:41,539 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1082 transitions. Word has length 178 [2019-11-20 00:14:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:41,539 INFO L462 AbstractCegarLoop]: Abstraction has 939 states and 1082 transitions. [2019-11-20 00:14:41,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-11-20 00:14:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1082 transitions. [2019-11-20 00:14:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-20 00:14:41,541 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:41,541 INFO L410 BasicCegarLoop]: trace histogram [30, 29, 29, 26, 26, 26, 4, 4, 4, 1, 1] [2019-11-20 00:14:41,744 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:41,745 INFO L410 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:41,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2099027503, now seen corresponding path program 9 times [2019-11-20 00:14:41,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:41,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066634595] [2019-11-20 00:14:41,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2373 backedges. 0 proven. 2373 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:42,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066634595] [2019-11-20 00:14:42,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337748177] [2019-11-20 00:14:42,355 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:42,392 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-20 00:14:42,392 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:42,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 00:14:42,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2373 backedges. 610 proven. 59 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2019-11-20 00:14:42,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:42,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 7] total 37 [2019-11-20 00:14:42,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038523029] [2019-11-20 00:14:42,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-20 00:14:42,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:42,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-20 00:14:42,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-11-20 00:14:42,651 INFO L87 Difference]: Start difference. First operand 939 states and 1082 transitions. Second operand 38 states. [2019-11-20 00:14:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:42,848 INFO L93 Difference]: Finished difference Result 1012 states and 1168 transitions. [2019-11-20 00:14:42,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-20 00:14:42,849 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 180 [2019-11-20 00:14:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:42,850 INFO L225 Difference]: With dead ends: 1012 [2019-11-20 00:14:42,850 INFO L226 Difference]: Without dead ends: 226 [2019-11-20 00:14:42,851 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-11-20 00:14:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2019-11-20 00:14:42,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2019-11-20 00:14:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-11-20 00:14:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 231 transitions. [2019-11-20 00:14:42,857 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 231 transitions. Word has length 180 [2019-11-20 00:14:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:42,858 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 231 transitions. [2019-11-20 00:14:42,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-20 00:14:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 231 transitions. [2019-11-20 00:14:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-11-20 00:14:42,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:42,860 INFO L410 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1] [2019-11-20 00:14:43,063 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:43,063 INFO L410 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:43,063 INFO L82 PathProgramCache]: Analyzing trace with hash 219614585, now seen corresponding path program 30 times [2019-11-20 00:14:43,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:43,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804892700] [2019-11-20 00:14:43,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:43,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804892700] [2019-11-20 00:14:43,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098440892] [2019-11-20 00:14:43,730 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:43,811 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2019-11-20 00:14:43,811 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:43,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-20 00:14:43,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:43,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:43,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2019-11-20 00:14:43,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135281801] [2019-11-20 00:14:43,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-20 00:14:43,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:43,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-20 00:14:43,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-11-20 00:14:43,872 INFO L87 Difference]: Start difference. First operand 225 states and 231 transitions. Second operand 33 states. [2019-11-20 00:14:44,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:44,022 INFO L93 Difference]: Finished difference Result 228 states and 234 transitions. [2019-11-20 00:14:44,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-20 00:14:44,023 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 184 [2019-11-20 00:14:44,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:44,024 INFO L225 Difference]: With dead ends: 228 [2019-11-20 00:14:44,024 INFO L226 Difference]: Without dead ends: 227 [2019-11-20 00:14:44,025 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-11-20 00:14:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2019-11-20 00:14:44,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2019-11-20 00:14:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-11-20 00:14:44,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 231 transitions. [2019-11-20 00:14:44,030 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 231 transitions. Word has length 184 [2019-11-20 00:14:44,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:44,031 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 231 transitions. [2019-11-20 00:14:44,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-20 00:14:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 231 transitions. [2019-11-20 00:14:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-11-20 00:14:44,032 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:44,032 INFO L410 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1] [2019-11-20 00:14:44,236 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:44,236 INFO L410 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:44,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:44,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1525731022, now seen corresponding path program 31 times [2019-11-20 00:14:44,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:44,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264076216] [2019-11-20 00:14:44,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:44,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264076216] [2019-11-20 00:14:44,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448319091] [2019-11-20 00:14:44,951 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:45,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-20 00:14:45,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:45,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:45,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2019-11-20 00:14:45,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652179723] [2019-11-20 00:14:45,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-20 00:14:45,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:45,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-20 00:14:45,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 00:14:45,062 INFO L87 Difference]: Start difference. First operand 225 states and 231 transitions. Second operand 34 states. [2019-11-20 00:14:45,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:45,787 INFO L93 Difference]: Finished difference Result 1428 states and 1640 transitions. [2019-11-20 00:14:45,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-20 00:14:45,787 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 190 [2019-11-20 00:14:45,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:45,791 INFO L225 Difference]: With dead ends: 1428 [2019-11-20 00:14:45,791 INFO L226 Difference]: Without dead ends: 1427 [2019-11-20 00:14:45,792 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 00:14:45,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2019-11-20 00:14:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1359. [2019-11-20 00:14:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2019-11-20 00:14:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1567 transitions. [2019-11-20 00:14:45,814 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1567 transitions. Word has length 190 [2019-11-20 00:14:45,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:45,815 INFO L462 AbstractCegarLoop]: Abstraction has 1359 states and 1567 transitions. [2019-11-20 00:14:45,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-20 00:14:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1567 transitions. [2019-11-20 00:14:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-20 00:14:45,816 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:45,816 INFO L410 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1] [2019-11-20 00:14:46,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:46,019 INFO L410 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:46,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:46,020 INFO L82 PathProgramCache]: Analyzing trace with hash 394389035, now seen corresponding path program 32 times [2019-11-20 00:14:46,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:46,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212195232] [2019-11-20 00:14:46,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:46,623 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212195232] [2019-11-20 00:14:46,623 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64624975] [2019-11-20 00:14:46,624 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:46,669 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:14:46,669 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:46,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-20 00:14:46,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:46,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:46,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2019-11-20 00:14:46,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925662245] [2019-11-20 00:14:46,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-20 00:14:46,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:46,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-20 00:14:46,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-11-20 00:14:46,714 INFO L87 Difference]: Start difference. First operand 1359 states and 1567 transitions. Second operand 35 states. [2019-11-20 00:14:47,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:47,238 INFO L93 Difference]: Finished difference Result 2613 states and 3034 transitions. [2019-11-20 00:14:47,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-20 00:14:47,238 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 196 [2019-11-20 00:14:47,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:47,251 INFO L225 Difference]: With dead ends: 2613 [2019-11-20 00:14:47,252 INFO L226 Difference]: Without dead ends: 2612 [2019-11-20 00:14:47,253 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-11-20 00:14:47,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2019-11-20 00:14:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 1398. [2019-11-20 00:14:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1398 states. [2019-11-20 00:14:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1613 transitions. [2019-11-20 00:14:47,282 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1613 transitions. Word has length 196 [2019-11-20 00:14:47,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:47,282 INFO L462 AbstractCegarLoop]: Abstraction has 1398 states and 1613 transitions. [2019-11-20 00:14:47,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-20 00:14:47,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1613 transitions. [2019-11-20 00:14:47,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-11-20 00:14:47,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:47,283 INFO L410 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1] [2019-11-20 00:14:47,484 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:47,484 INFO L410 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:47,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:47,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1039319964, now seen corresponding path program 33 times [2019-11-20 00:14:47,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:47,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212098536] [2019-11-20 00:14:47,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:48,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212098536] [2019-11-20 00:14:48,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157803052] [2019-11-20 00:14:48,077 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:48,154 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2019-11-20 00:14:48,154 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:48,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-20 00:14:48,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:48,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:48,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2019-11-20 00:14:48,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490506581] [2019-11-20 00:14:48,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-20 00:14:48,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:48,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-20 00:14:48,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-11-20 00:14:48,230 INFO L87 Difference]: Start difference. First operand 1398 states and 1613 transitions. Second operand 36 states. [2019-11-20 00:14:48,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:48,617 INFO L93 Difference]: Finished difference Result 2693 states and 3128 transitions. [2019-11-20 00:14:48,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-20 00:14:48,621 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 202 [2019-11-20 00:14:48,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:48,632 INFO L225 Difference]: With dead ends: 2693 [2019-11-20 00:14:48,632 INFO L226 Difference]: Without dead ends: 2692 [2019-11-20 00:14:48,634 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-11-20 00:14:48,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2019-11-20 00:14:48,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1437. [2019-11-20 00:14:48,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1437 states. [2019-11-20 00:14:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1659 transitions. [2019-11-20 00:14:48,658 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1659 transitions. Word has length 202 [2019-11-20 00:14:48,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:48,658 INFO L462 AbstractCegarLoop]: Abstraction has 1437 states and 1659 transitions. [2019-11-20 00:14:48,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-20 00:14:48,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1659 transitions. [2019-11-20 00:14:48,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-11-20 00:14:48,659 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:48,659 INFO L410 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 1, 1] [2019-11-20 00:14:48,862 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:48,863 INFO L410 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:48,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:48,863 INFO L82 PathProgramCache]: Analyzing trace with hash 931349469, now seen corresponding path program 34 times [2019-11-20 00:14:48,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:48,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646144709] [2019-11-20 00:14:48,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:49,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646144709] [2019-11-20 00:14:49,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220635214] [2019-11-20 00:14:49,545 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:49,609 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:14:49,609 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:49,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-20 00:14:49,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:49,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:49,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2019-11-20 00:14:49,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479057728] [2019-11-20 00:14:49,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-11-20 00:14:49,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:49,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-11-20 00:14:49,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-11-20 00:14:49,667 INFO L87 Difference]: Start difference. First operand 1437 states and 1659 transitions. Second operand 37 states. [2019-11-20 00:14:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:50,084 INFO L93 Difference]: Finished difference Result 2773 states and 3222 transitions. [2019-11-20 00:14:50,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-11-20 00:14:50,084 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 208 [2019-11-20 00:14:50,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:50,091 INFO L225 Difference]: With dead ends: 2773 [2019-11-20 00:14:50,091 INFO L226 Difference]: Without dead ends: 2772 [2019-11-20 00:14:50,092 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-11-20 00:14:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2019-11-20 00:14:50,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 1476. [2019-11-20 00:14:50,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1476 states. [2019-11-20 00:14:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1705 transitions. [2019-11-20 00:14:50,122 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1705 transitions. Word has length 208 [2019-11-20 00:14:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:50,123 INFO L462 AbstractCegarLoop]: Abstraction has 1476 states and 1705 transitions. [2019-11-20 00:14:50,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-11-20 00:14:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1705 transitions. [2019-11-20 00:14:50,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-20 00:14:50,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:50,125 INFO L410 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 1, 1] [2019-11-20 00:14:50,328 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:50,328 INFO L410 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:50,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:50,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1997927274, now seen corresponding path program 35 times [2019-11-20 00:14:50,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:50,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557033117] [2019-11-20 00:14:50,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:51,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557033117] [2019-11-20 00:14:51,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699600461] [2019-11-20 00:14:51,124 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:51,216 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2019-11-20 00:14:51,216 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:51,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-20 00:14:51,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:51,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:51,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2019-11-20 00:14:51,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102223556] [2019-11-20 00:14:51,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-20 00:14:51,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:51,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-20 00:14:51,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-11-20 00:14:51,276 INFO L87 Difference]: Start difference. First operand 1476 states and 1705 transitions. Second operand 38 states. [2019-11-20 00:14:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:51,636 INFO L93 Difference]: Finished difference Result 2853 states and 3316 transitions. [2019-11-20 00:14:51,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-20 00:14:51,637 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 214 [2019-11-20 00:14:51,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:51,642 INFO L225 Difference]: With dead ends: 2853 [2019-11-20 00:14:51,643 INFO L226 Difference]: Without dead ends: 2852 [2019-11-20 00:14:51,644 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-11-20 00:14:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2019-11-20 00:14:51,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1515. [2019-11-20 00:14:51,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1515 states. [2019-11-20 00:14:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1751 transitions. [2019-11-20 00:14:51,671 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1751 transitions. Word has length 214 [2019-11-20 00:14:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:51,671 INFO L462 AbstractCegarLoop]: Abstraction has 1515 states and 1751 transitions. [2019-11-20 00:14:51,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-20 00:14:51,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1751 transitions. [2019-11-20 00:14:51,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-11-20 00:14:51,672 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:51,672 INFO L410 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 1, 1] [2019-11-20 00:14:51,872 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:51,872 INFO L410 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:51,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:51,873 INFO L82 PathProgramCache]: Analyzing trace with hash -830757233, now seen corresponding path program 36 times [2019-11-20 00:14:51,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:51,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759344225] [2019-11-20 00:14:51,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:52,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759344225] [2019-11-20 00:14:52,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514345382] [2019-11-20 00:14:52,722 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:52,812 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2019-11-20 00:14:52,812 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:52,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 38 conjunts are in the unsatisfiable core [2019-11-20 00:14:52,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:52,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:52,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2019-11-20 00:14:52,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209224094] [2019-11-20 00:14:52,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-11-20 00:14:52,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:52,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-11-20 00:14:52,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-11-20 00:14:52,879 INFO L87 Difference]: Start difference. First operand 1515 states and 1751 transitions. Second operand 39 states. [2019-11-20 00:14:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:53,462 INFO L93 Difference]: Finished difference Result 2933 states and 3410 transitions. [2019-11-20 00:14:53,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-11-20 00:14:53,465 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 220 [2019-11-20 00:14:53,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:53,470 INFO L225 Difference]: With dead ends: 2933 [2019-11-20 00:14:53,470 INFO L226 Difference]: Without dead ends: 2932 [2019-11-20 00:14:53,471 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-11-20 00:14:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2019-11-20 00:14:53,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1554. [2019-11-20 00:14:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2019-11-20 00:14:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1797 transitions. [2019-11-20 00:14:53,503 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1797 transitions. Word has length 220 [2019-11-20 00:14:53,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:53,503 INFO L462 AbstractCegarLoop]: Abstraction has 1554 states and 1797 transitions. [2019-11-20 00:14:53,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-11-20 00:14:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1797 transitions. [2019-11-20 00:14:53,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-11-20 00:14:53,505 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:53,505 INFO L410 BasicCegarLoop]: trace histogram [37, 36, 36, 31, 31, 31, 6, 6, 6, 1, 1] [2019-11-20 00:14:53,708 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:53,708 INFO L410 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:53,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:53,709 INFO L82 PathProgramCache]: Analyzing trace with hash -337512172, now seen corresponding path program 10 times [2019-11-20 00:14:53,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:53,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316405682] [2019-11-20 00:14:53,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 0 proven. 3588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:54,578 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316405682] [2019-11-20 00:14:54,578 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675453212] [2019-11-20 00:14:54,578 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:54,640 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:14:54,640 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:54,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-20 00:14:54,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 661 proven. 2852 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-20 00:14:54,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:54,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 33] total 38 [2019-11-20 00:14:54,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917849535] [2019-11-20 00:14:54,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-11-20 00:14:54,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:54,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-11-20 00:14:54,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-11-20 00:14:54,703 INFO L87 Difference]: Start difference. First operand 1554 states and 1797 transitions. Second operand 39 states. [2019-11-20 00:14:54,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:54,867 INFO L93 Difference]: Finished difference Result 1636 states and 1891 transitions. [2019-11-20 00:14:54,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-11-20 00:14:54,868 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 222 [2019-11-20 00:14:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:54,869 INFO L225 Difference]: With dead ends: 1636 [2019-11-20 00:14:54,869 INFO L226 Difference]: Without dead ends: 265 [2019-11-20 00:14:54,870 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-11-20 00:14:54,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-11-20 00:14:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2019-11-20 00:14:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2019-11-20 00:14:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 267 transitions. [2019-11-20 00:14:54,876 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 267 transitions. Word has length 222 [2019-11-20 00:14:54,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:54,877 INFO L462 AbstractCegarLoop]: Abstraction has 261 states and 267 transitions. [2019-11-20 00:14:54,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-11-20 00:14:54,877 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 267 transitions. [2019-11-20 00:14:54,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-11-20 00:14:54,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:54,879 INFO L410 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1] [2019-11-20 00:14:55,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:55,079 INFO L410 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:55,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:55,080 INFO L82 PathProgramCache]: Analyzing trace with hash -257547832, now seen corresponding path program 37 times [2019-11-20 00:14:55,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:55,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933559420] [2019-11-20 00:14:55,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:55,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933559420] [2019-11-20 00:14:55,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265382281] [2019-11-20 00:14:55,769 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:55,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-20 00:14:55,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:55,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:55,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2019-11-20 00:14:55,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225308426] [2019-11-20 00:14:55,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-20 00:14:55,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:55,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-20 00:14:55,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-11-20 00:14:55,883 INFO L87 Difference]: Start difference. First operand 261 states and 267 transitions. Second operand 40 states. [2019-11-20 00:14:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:56,347 INFO L93 Difference]: Finished difference Result 1710 states and 1964 transitions. [2019-11-20 00:14:56,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-20 00:14:56,347 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 226 [2019-11-20 00:14:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:56,350 INFO L225 Difference]: With dead ends: 1710 [2019-11-20 00:14:56,350 INFO L226 Difference]: Without dead ends: 1709 [2019-11-20 00:14:56,351 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-11-20 00:14:56,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2019-11-20 00:14:56,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1629. [2019-11-20 00:14:56,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2019-11-20 00:14:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 1879 transitions. [2019-11-20 00:14:56,374 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 1879 transitions. Word has length 226 [2019-11-20 00:14:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:56,375 INFO L462 AbstractCegarLoop]: Abstraction has 1629 states and 1879 transitions. [2019-11-20 00:14:56,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-20 00:14:56,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 1879 transitions. [2019-11-20 00:14:56,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-11-20 00:14:56,376 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:56,377 INFO L410 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1] [2019-11-20 00:14:56,580 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:56,580 INFO L410 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:56,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1324642751, now seen corresponding path program 38 times [2019-11-20 00:14:56,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:56,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102387094] [2019-11-20 00:14:56,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:57,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102387094] [2019-11-20 00:14:57,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634144894] [2019-11-20 00:14:57,305 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:57,363 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:14:57,363 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:57,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-20 00:14:57,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:57,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:57,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2019-11-20 00:14:57,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901058077] [2019-11-20 00:14:57,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-11-20 00:14:57,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:57,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-11-20 00:14:57,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-11-20 00:14:57,433 INFO L87 Difference]: Start difference. First operand 1629 states and 1879 transitions. Second operand 41 states. [2019-11-20 00:14:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:58,036 INFO L93 Difference]: Finished difference Result 3129 states and 3634 transitions. [2019-11-20 00:14:58,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-11-20 00:14:58,036 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 232 [2019-11-20 00:14:58,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:58,041 INFO L225 Difference]: With dead ends: 3129 [2019-11-20 00:14:58,041 INFO L226 Difference]: Without dead ends: 3128 [2019-11-20 00:14:58,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-11-20 00:14:58,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2019-11-20 00:14:58,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 1668. [2019-11-20 00:14:58,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1668 states. [2019-11-20 00:14:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1925 transitions. [2019-11-20 00:14:58,078 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1925 transitions. Word has length 232 [2019-11-20 00:14:58,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:58,079 INFO L462 AbstractCegarLoop]: Abstraction has 1668 states and 1925 transitions. [2019-11-20 00:14:58,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-11-20 00:14:58,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1925 transitions. [2019-11-20 00:14:58,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-11-20 00:14:58,080 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:58,081 INFO L410 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 1, 1] [2019-11-20 00:14:58,284 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:58,284 INFO L410 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:14:58,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:14:58,284 INFO L82 PathProgramCache]: Analyzing trace with hash -209585158, now seen corresponding path program 39 times [2019-11-20 00:14:58,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:14:58,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991609848] [2019-11-20 00:14:58,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:14:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:14:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:59,052 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991609848] [2019-11-20 00:14:59,052 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706945083] [2019-11-20 00:14:59,052 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:14:59,128 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2019-11-20 00:14:59,128 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:14:59,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-20 00:14:59,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:14:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:14:59,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:14:59,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2019-11-20 00:14:59,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960895202] [2019-11-20 00:14:59,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-11-20 00:14:59,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:14:59,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-11-20 00:14:59,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-11-20 00:14:59,200 INFO L87 Difference]: Start difference. First operand 1668 states and 1925 transitions. Second operand 42 states. [2019-11-20 00:14:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:14:59,932 INFO L93 Difference]: Finished difference Result 3209 states and 3728 transitions. [2019-11-20 00:14:59,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-20 00:14:59,933 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 238 [2019-11-20 00:14:59,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:14:59,939 INFO L225 Difference]: With dead ends: 3209 [2019-11-20 00:14:59,940 INFO L226 Difference]: Without dead ends: 3208 [2019-11-20 00:14:59,941 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-11-20 00:14:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2019-11-20 00:14:59,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 1707. [2019-11-20 00:14:59,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2019-11-20 00:14:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1971 transitions. [2019-11-20 00:14:59,987 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1971 transitions. Word has length 238 [2019-11-20 00:14:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:14:59,988 INFO L462 AbstractCegarLoop]: Abstraction has 1707 states and 1971 transitions. [2019-11-20 00:14:59,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-11-20 00:14:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1971 transitions. [2019-11-20 00:14:59,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-11-20 00:14:59,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:14:59,990 INFO L410 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 1, 1] [2019-11-20 00:15:00,193 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:00,194 INFO L410 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:00,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:00,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1192458995, now seen corresponding path program 40 times [2019-11-20 00:15:00,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:00,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541031284] [2019-11-20 00:15:00,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:01,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541031284] [2019-11-20 00:15:01,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524287096] [2019-11-20 00:15:01,013 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:01,077 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:15:01,077 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:01,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 42 conjunts are in the unsatisfiable core [2019-11-20 00:15:01,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:01,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:01,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2019-11-20 00:15:01,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976222794] [2019-11-20 00:15:01,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-11-20 00:15:01,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:01,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-11-20 00:15:01,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2019-11-20 00:15:01,132 INFO L87 Difference]: Start difference. First operand 1707 states and 1971 transitions. Second operand 43 states. [2019-11-20 00:15:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:01,586 INFO L93 Difference]: Finished difference Result 3289 states and 3822 transitions. [2019-11-20 00:15:01,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-11-20 00:15:01,587 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 244 [2019-11-20 00:15:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:01,591 INFO L225 Difference]: With dead ends: 3289 [2019-11-20 00:15:01,591 INFO L226 Difference]: Without dead ends: 3288 [2019-11-20 00:15:01,592 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2019-11-20 00:15:01,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2019-11-20 00:15:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 1746. [2019-11-20 00:15:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1746 states. [2019-11-20 00:15:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2017 transitions. [2019-11-20 00:15:01,631 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2017 transitions. Word has length 244 [2019-11-20 00:15:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:01,632 INFO L462 AbstractCegarLoop]: Abstraction has 1746 states and 2017 transitions. [2019-11-20 00:15:01,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-11-20 00:15:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2017 transitions. [2019-11-20 00:15:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-11-20 00:15:01,634 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:01,634 INFO L410 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 1, 1] [2019-11-20 00:15:01,837 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:01,837 INFO L410 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:01,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:01,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1359078612, now seen corresponding path program 41 times [2019-11-20 00:15:01,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:01,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872864502] [2019-11-20 00:15:01,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:02,920 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872864502] [2019-11-20 00:15:02,920 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246105090] [2019-11-20 00:15:02,920 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:03,022 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2019-11-20 00:15:03,022 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:03,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 43 conjunts are in the unsatisfiable core [2019-11-20 00:15:03,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:03,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:03,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2019-11-20 00:15:03,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694815102] [2019-11-20 00:15:03,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-11-20 00:15:03,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:03,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-11-20 00:15:03,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2019-11-20 00:15:03,144 INFO L87 Difference]: Start difference. First operand 1746 states and 2017 transitions. Second operand 44 states. [2019-11-20 00:15:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:03,851 INFO L93 Difference]: Finished difference Result 3369 states and 3916 transitions. [2019-11-20 00:15:03,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-20 00:15:03,853 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 250 [2019-11-20 00:15:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:03,855 INFO L225 Difference]: With dead ends: 3369 [2019-11-20 00:15:03,855 INFO L226 Difference]: Without dead ends: 3368 [2019-11-20 00:15:03,856 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2019-11-20 00:15:03,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2019-11-20 00:15:03,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 1785. [2019-11-20 00:15:03,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1785 states. [2019-11-20 00:15:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 2063 transitions. [2019-11-20 00:15:03,891 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 2063 transitions. Word has length 250 [2019-11-20 00:15:03,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:03,892 INFO L462 AbstractCegarLoop]: Abstraction has 1785 states and 2063 transitions. [2019-11-20 00:15:03,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-11-20 00:15:03,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 2063 transitions. [2019-11-20 00:15:03,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-11-20 00:15:03,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:03,894 INFO L410 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1] [2019-11-20 00:15:04,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:04,097 INFO L410 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:04,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:04,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1414271835, now seen corresponding path program 42 times [2019-11-20 00:15:04,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:04,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380627899] [2019-11-20 00:15:04,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:05,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380627899] [2019-11-20 00:15:05,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152189973] [2019-11-20 00:15:05,277 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:05,355 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2019-11-20 00:15:05,355 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:05,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 44 conjunts are in the unsatisfiable core [2019-11-20 00:15:05,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:05,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:05,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2019-11-20 00:15:05,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17157836] [2019-11-20 00:15:05,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-11-20 00:15:05,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:05,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-11-20 00:15:05,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-11-20 00:15:05,441 INFO L87 Difference]: Start difference. First operand 1785 states and 2063 transitions. Second operand 45 states. [2019-11-20 00:15:05,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:05,982 INFO L93 Difference]: Finished difference Result 3449 states and 4010 transitions. [2019-11-20 00:15:05,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-11-20 00:15:05,982 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 256 [2019-11-20 00:15:05,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:05,984 INFO L225 Difference]: With dead ends: 3449 [2019-11-20 00:15:05,984 INFO L226 Difference]: Without dead ends: 3448 [2019-11-20 00:15:05,985 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-11-20 00:15:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2019-11-20 00:15:06,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 1824. [2019-11-20 00:15:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1824 states. [2019-11-20 00:15:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2109 transitions. [2019-11-20 00:15:06,019 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2109 transitions. Word has length 256 [2019-11-20 00:15:06,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:06,019 INFO L462 AbstractCegarLoop]: Abstraction has 1824 states and 2109 transitions. [2019-11-20 00:15:06,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 45 states. [2019-11-20 00:15:06,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2109 transitions. [2019-11-20 00:15:06,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2019-11-20 00:15:06,021 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:06,021 INFO L410 BasicCegarLoop]: trace histogram [43, 42, 42, 37, 37, 37, 6, 6, 6, 1, 1] [2019-11-20 00:15:06,225 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:06,225 INFO L410 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:06,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:06,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1545671082, now seen corresponding path program 11 times [2019-11-20 00:15:06,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:06,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823861668] [2019-11-20 00:15:06,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4932 backedges. 0 proven. 4932 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:07,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823861668] [2019-11-20 00:15:07,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741094294] [2019-11-20 00:15:07,120 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:07,198 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2019-11-20 00:15:07,198 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:07,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-20 00:15:07,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4932 backedges. 787 proven. 4070 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-20 00:15:07,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:07,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 39] total 44 [2019-11-20 00:15:07,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410623854] [2019-11-20 00:15:07,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-11-20 00:15:07,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:07,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-11-20 00:15:07,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-11-20 00:15:07,274 INFO L87 Difference]: Start difference. First operand 1824 states and 2109 transitions. Second operand 45 states. [2019-11-20 00:15:07,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:07,448 INFO L93 Difference]: Finished difference Result 1906 states and 2203 transitions. [2019-11-20 00:15:07,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-11-20 00:15:07,448 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 258 [2019-11-20 00:15:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:07,449 INFO L225 Difference]: With dead ends: 1906 [2019-11-20 00:15:07,449 INFO L226 Difference]: Without dead ends: 301 [2019-11-20 00:15:07,450 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-11-20 00:15:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-11-20 00:15:07,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 297. [2019-11-20 00:15:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2019-11-20 00:15:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 303 transitions. [2019-11-20 00:15:07,454 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 303 transitions. Word has length 258 [2019-11-20 00:15:07,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:07,454 INFO L462 AbstractCegarLoop]: Abstraction has 297 states and 303 transitions. [2019-11-20 00:15:07,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 45 states. [2019-11-20 00:15:07,454 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 303 transitions. [2019-11-20 00:15:07,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2019-11-20 00:15:07,456 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:07,456 INFO L410 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1] [2019-11-20 00:15:07,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:07,659 INFO L410 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:07,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:07,660 INFO L82 PathProgramCache]: Analyzing trace with hash -2082799778, now seen corresponding path program 43 times [2019-11-20 00:15:07,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:07,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049665630] [2019-11-20 00:15:07,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:08,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049665630] [2019-11-20 00:15:08,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043625248] [2019-11-20 00:15:08,735 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:08,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-20 00:15:08,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:08,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:08,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2019-11-20 00:15:08,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789720143] [2019-11-20 00:15:08,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-11-20 00:15:08,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:08,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-11-20 00:15:08,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 00:15:08,872 INFO L87 Difference]: Start difference. First operand 297 states and 303 transitions. Second operand 46 states. [2019-11-20 00:15:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:09,356 INFO L93 Difference]: Finished difference Result 1992 states and 2288 transitions. [2019-11-20 00:15:09,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-11-20 00:15:09,357 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 262 [2019-11-20 00:15:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:09,358 INFO L225 Difference]: With dead ends: 1992 [2019-11-20 00:15:09,358 INFO L226 Difference]: Without dead ends: 1991 [2019-11-20 00:15:09,359 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 00:15:09,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2019-11-20 00:15:09,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1899. [2019-11-20 00:15:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2019-11-20 00:15:09,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2191 transitions. [2019-11-20 00:15:09,377 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2191 transitions. Word has length 262 [2019-11-20 00:15:09,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:09,377 INFO L462 AbstractCegarLoop]: Abstraction has 1899 states and 2191 transitions. [2019-11-20 00:15:09,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-11-20 00:15:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2191 transitions. [2019-11-20 00:15:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2019-11-20 00:15:09,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:09,378 INFO L410 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 1, 1] [2019-11-20 00:15:09,578 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:09,579 INFO L410 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:09,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:09,579 INFO L82 PathProgramCache]: Analyzing trace with hash -850566313, now seen corresponding path program 44 times [2019-11-20 00:15:09,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:09,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231362297] [2019-11-20 00:15:09,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:10,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231362297] [2019-11-20 00:15:10,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45713458] [2019-11-20 00:15:10,553 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:10,608 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:15:10,608 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:10,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 46 conjunts are in the unsatisfiable core [2019-11-20 00:15:10,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:10,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:10,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2019-11-20 00:15:10,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074992635] [2019-11-20 00:15:10,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 47 states [2019-11-20 00:15:10,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:10,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2019-11-20 00:15:10,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2019-11-20 00:15:10,679 INFO L87 Difference]: Start difference. First operand 1899 states and 2191 transitions. Second operand 47 states. [2019-11-20 00:15:11,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:11,148 INFO L93 Difference]: Finished difference Result 3645 states and 4234 transitions. [2019-11-20 00:15:11,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-11-20 00:15:11,148 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 268 [2019-11-20 00:15:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:11,151 INFO L225 Difference]: With dead ends: 3645 [2019-11-20 00:15:11,151 INFO L226 Difference]: Without dead ends: 3644 [2019-11-20 00:15:11,151 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2019-11-20 00:15:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2019-11-20 00:15:11,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 1938. [2019-11-20 00:15:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2019-11-20 00:15:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2237 transitions. [2019-11-20 00:15:11,177 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2237 transitions. Word has length 268 [2019-11-20 00:15:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:11,177 INFO L462 AbstractCegarLoop]: Abstraction has 1938 states and 2237 transitions. [2019-11-20 00:15:11,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 47 states. [2019-11-20 00:15:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2237 transitions. [2019-11-20 00:15:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2019-11-20 00:15:11,178 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:11,178 INFO L410 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 1, 1] [2019-11-20 00:15:11,380 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:11,381 INFO L410 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:11,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:11,381 INFO L82 PathProgramCache]: Analyzing trace with hash 907618448, now seen corresponding path program 45 times [2019-11-20 00:15:11,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:11,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053178314] [2019-11-20 00:15:11,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:12,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053178314] [2019-11-20 00:15:12,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74521608] [2019-11-20 00:15:12,346 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:12,436 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2019-11-20 00:15:12,436 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:12,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-20 00:15:12,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:12,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:12,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2019-11-20 00:15:12,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715630261] [2019-11-20 00:15:12,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-11-20 00:15:12,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:12,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-11-20 00:15:12,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2019-11-20 00:15:12,536 INFO L87 Difference]: Start difference. First operand 1938 states and 2237 transitions. Second operand 48 states. [2019-11-20 00:15:13,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:13,088 INFO L93 Difference]: Finished difference Result 3725 states and 4328 transitions. [2019-11-20 00:15:13,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-11-20 00:15:13,089 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 274 [2019-11-20 00:15:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:13,091 INFO L225 Difference]: With dead ends: 3725 [2019-11-20 00:15:13,091 INFO L226 Difference]: Without dead ends: 3724 [2019-11-20 00:15:13,092 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2019-11-20 00:15:13,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2019-11-20 00:15:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 1977. [2019-11-20 00:15:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1977 states. [2019-11-20 00:15:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2283 transitions. [2019-11-20 00:15:13,123 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2283 transitions. Word has length 274 [2019-11-20 00:15:13,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:13,123 INFO L462 AbstractCegarLoop]: Abstraction has 1977 states and 2283 transitions. [2019-11-20 00:15:13,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-11-20 00:15:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2283 transitions. [2019-11-20 00:15:13,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-11-20 00:15:13,125 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:13,126 INFO L410 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1] [2019-11-20 00:15:13,329 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:13,329 INFO L410 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:13,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:13,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1920966903, now seen corresponding path program 46 times [2019-11-20 00:15:13,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:13,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033630928] [2019-11-20 00:15:13,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:14,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033630928] [2019-11-20 00:15:14,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203201602] [2019-11-20 00:15:14,317 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:14,386 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:15:14,386 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:14,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 48 conjunts are in the unsatisfiable core [2019-11-20 00:15:14,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:14,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:14,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2019-11-20 00:15:14,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634033048] [2019-11-20 00:15:14,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 49 states [2019-11-20 00:15:14,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:14,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2019-11-20 00:15:14,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2019-11-20 00:15:14,479 INFO L87 Difference]: Start difference. First operand 1977 states and 2283 transitions. Second operand 49 states. [2019-11-20 00:15:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:15,002 INFO L93 Difference]: Finished difference Result 3805 states and 4422 transitions. [2019-11-20 00:15:15,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-11-20 00:15:15,003 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 280 [2019-11-20 00:15:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:15,006 INFO L225 Difference]: With dead ends: 3805 [2019-11-20 00:15:15,006 INFO L226 Difference]: Without dead ends: 3804 [2019-11-20 00:15:15,006 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2019-11-20 00:15:15,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2019-11-20 00:15:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 2016. [2019-11-20 00:15:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2016 states. [2019-11-20 00:15:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2329 transitions. [2019-11-20 00:15:15,030 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2329 transitions. Word has length 280 [2019-11-20 00:15:15,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:15,031 INFO L462 AbstractCegarLoop]: Abstraction has 2016 states and 2329 transitions. [2019-11-20 00:15:15,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 49 states. [2019-11-20 00:15:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2329 transitions. [2019-11-20 00:15:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-11-20 00:15:15,032 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:15,032 INFO L410 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1] [2019-11-20 00:15:15,232 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:15,233 INFO L410 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:15,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:15,233 INFO L82 PathProgramCache]: Analyzing trace with hash 217650882, now seen corresponding path program 47 times [2019-11-20 00:15:15,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:15,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992825241] [2019-11-20 00:15:15,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:16,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992825241] [2019-11-20 00:15:16,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073426231] [2019-11-20 00:15:16,237 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:16,334 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2019-11-20 00:15:16,335 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:16,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-20 00:15:16,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:16,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:16,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2019-11-20 00:15:16,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16517697] [2019-11-20 00:15:16,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-11-20 00:15:16,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:16,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-11-20 00:15:16,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2019-11-20 00:15:16,430 INFO L87 Difference]: Start difference. First operand 2016 states and 2329 transitions. Second operand 50 states. [2019-11-20 00:15:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:17,195 INFO L93 Difference]: Finished difference Result 3885 states and 4516 transitions. [2019-11-20 00:15:17,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-11-20 00:15:17,195 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 286 [2019-11-20 00:15:17,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:17,199 INFO L225 Difference]: With dead ends: 3885 [2019-11-20 00:15:17,199 INFO L226 Difference]: Without dead ends: 3884 [2019-11-20 00:15:17,201 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2019-11-20 00:15:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2019-11-20 00:15:17,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 2055. [2019-11-20 00:15:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2019-11-20 00:15:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2375 transitions. [2019-11-20 00:15:17,243 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2375 transitions. Word has length 286 [2019-11-20 00:15:17,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:17,243 INFO L462 AbstractCegarLoop]: Abstraction has 2055 states and 2375 transitions. [2019-11-20 00:15:17,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-11-20 00:15:17,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2375 transitions. [2019-11-20 00:15:17,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2019-11-20 00:15:17,245 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:17,246 INFO L410 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1] [2019-11-20 00:15:17,450 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:17,451 INFO L410 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:17,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:17,451 INFO L82 PathProgramCache]: Analyzing trace with hash -517120069, now seen corresponding path program 48 times [2019-11-20 00:15:17,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:17,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833636681] [2019-11-20 00:15:17,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:18,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833636681] [2019-11-20 00:15:18,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342968885] [2019-11-20 00:15:18,647 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:18,737 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2019-11-20 00:15:18,737 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:18,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 50 conjunts are in the unsatisfiable core [2019-11-20 00:15:18,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:18,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:18,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2019-11-20 00:15:18,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023435795] [2019-11-20 00:15:18,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 51 states [2019-11-20 00:15:18,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:18,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2019-11-20 00:15:18,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2019-11-20 00:15:18,812 INFO L87 Difference]: Start difference. First operand 2055 states and 2375 transitions. Second operand 51 states. [2019-11-20 00:15:19,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:19,539 INFO L93 Difference]: Finished difference Result 3965 states and 4610 transitions. [2019-11-20 00:15:19,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-11-20 00:15:19,539 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 292 [2019-11-20 00:15:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:19,542 INFO L225 Difference]: With dead ends: 3965 [2019-11-20 00:15:19,542 INFO L226 Difference]: Without dead ends: 3964 [2019-11-20 00:15:19,543 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2019-11-20 00:15:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2019-11-20 00:15:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 2094. [2019-11-20 00:15:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2019-11-20 00:15:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2421 transitions. [2019-11-20 00:15:19,572 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2421 transitions. Word has length 292 [2019-11-20 00:15:19,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:19,572 INFO L462 AbstractCegarLoop]: Abstraction has 2094 states and 2421 transitions. [2019-11-20 00:15:19,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 51 states. [2019-11-20 00:15:19,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2421 transitions. [2019-11-20 00:15:19,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-11-20 00:15:19,574 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:19,574 INFO L410 BasicCegarLoop]: trace histogram [49, 48, 48, 43, 43, 43, 6, 6, 6, 1, 1] [2019-11-20 00:15:19,778 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:19,778 INFO L410 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:19,778 INFO L82 PathProgramCache]: Analyzing trace with hash 420091712, now seen corresponding path program 12 times [2019-11-20 00:15:19,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:19,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862040801] [2019-11-20 00:15:19,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6492 backedges. 0 proven. 6492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:20,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862040801] [2019-11-20 00:15:20,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119547150] [2019-11-20 00:15:20,830 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:20,868 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-20 00:15:20,868 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:20,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:15:20,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6492 backedges. 1146 proven. 96 refuted. 0 times theorem prover too weak. 5250 trivial. 0 not checked. [2019-11-20 00:15:21,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:21,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 8] total 57 [2019-11-20 00:15:21,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355053683] [2019-11-20 00:15:21,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 58 states [2019-11-20 00:15:21,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:21,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2019-11-20 00:15:21,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2019-11-20 00:15:21,188 INFO L87 Difference]: Start difference. First operand 2094 states and 2421 transitions. Second operand 58 states. [2019-11-20 00:15:21,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:21,467 INFO L93 Difference]: Finished difference Result 2185 states and 2527 transitions. [2019-11-20 00:15:21,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-11-20 00:15:21,467 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 294 [2019-11-20 00:15:21,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:21,468 INFO L225 Difference]: With dead ends: 2185 [2019-11-20 00:15:21,468 INFO L226 Difference]: Without dead ends: 346 [2019-11-20 00:15:21,469 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2019-11-20 00:15:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2019-11-20 00:15:21,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 345. [2019-11-20 00:15:21,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2019-11-20 00:15:21,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 352 transitions. [2019-11-20 00:15:21,474 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 352 transitions. Word has length 294 [2019-11-20 00:15:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:21,475 INFO L462 AbstractCegarLoop]: Abstraction has 345 states and 352 transitions. [2019-11-20 00:15:21,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 58 states. [2019-11-20 00:15:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 352 transitions. [2019-11-20 00:15:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2019-11-20 00:15:21,477 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:21,477 INFO L410 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 1, 1] [2019-11-20 00:15:21,679 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:21,679 INFO L410 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:21,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash -218412556, now seen corresponding path program 49 times [2019-11-20 00:15:21,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:21,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837458805] [2019-11-20 00:15:21,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:22,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837458805] [2019-11-20 00:15:22,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420331472] [2019-11-20 00:15:22,801 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:22,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 51 conjunts are in the unsatisfiable core [2019-11-20 00:15:22,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:22,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:22,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2019-11-20 00:15:22,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116298297] [2019-11-20 00:15:22,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-20 00:15:22,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:22,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-20 00:15:22,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2019-11-20 00:15:22,949 INFO L87 Difference]: Start difference. First operand 345 states and 352 transitions. Second operand 52 states. [2019-11-20 00:15:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:23,125 INFO L93 Difference]: Finished difference Result 348 states and 355 transitions. [2019-11-20 00:15:23,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-11-20 00:15:23,125 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 298 [2019-11-20 00:15:23,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:23,126 INFO L225 Difference]: With dead ends: 348 [2019-11-20 00:15:23,126 INFO L226 Difference]: Without dead ends: 347 [2019-11-20 00:15:23,126 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2019-11-20 00:15:23,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2019-11-20 00:15:23,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2019-11-20 00:15:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2019-11-20 00:15:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 352 transitions. [2019-11-20 00:15:23,131 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 352 transitions. Word has length 298 [2019-11-20 00:15:23,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:23,131 INFO L462 AbstractCegarLoop]: Abstraction has 345 states and 352 transitions. [2019-11-20 00:15:23,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-20 00:15:23,131 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 352 transitions. [2019-11-20 00:15:23,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2019-11-20 00:15:23,132 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:23,132 INFO L410 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 1, 1] [2019-11-20 00:15:23,335 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:23,335 INFO L410 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:23,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:23,335 INFO L82 PathProgramCache]: Analyzing trace with hash -260774547, now seen corresponding path program 50 times [2019-11-20 00:15:23,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:23,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556768880] [2019-11-20 00:15:23,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:24,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556768880] [2019-11-20 00:15:24,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941635460] [2019-11-20 00:15:24,490 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:24,556 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:15:24,556 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:24,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 52 conjunts are in the unsatisfiable core [2019-11-20 00:15:24,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:24,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:24,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2019-11-20 00:15:24,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557685116] [2019-11-20 00:15:24,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 53 states [2019-11-20 00:15:24,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:24,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2019-11-20 00:15:24,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2019-11-20 00:15:24,634 INFO L87 Difference]: Start difference. First operand 345 states and 352 transitions. Second operand 53 states. [2019-11-20 00:15:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:25,422 INFO L93 Difference]: Finished difference Result 2595 states and 2986 transitions. [2019-11-20 00:15:25,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-11-20 00:15:25,423 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 304 [2019-11-20 00:15:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:25,424 INFO L225 Difference]: With dead ends: 2595 [2019-11-20 00:15:25,425 INFO L226 Difference]: Without dead ends: 2594 [2019-11-20 00:15:25,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2019-11-20 00:15:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2019-11-20 00:15:25,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2487. [2019-11-20 00:15:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2487 states. [2019-11-20 00:15:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 2873 transitions. [2019-11-20 00:15:25,450 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 2873 transitions. Word has length 304 [2019-11-20 00:15:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:25,451 INFO L462 AbstractCegarLoop]: Abstraction has 2487 states and 2873 transitions. [2019-11-20 00:15:25,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 53 states. [2019-11-20 00:15:25,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 2873 transitions. [2019-11-20 00:15:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2019-11-20 00:15:25,452 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:25,452 INFO L410 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 1, 1] [2019-11-20 00:15:25,652 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:25,653 INFO L410 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:25,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:25,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1780465114, now seen corresponding path program 51 times [2019-11-20 00:15:25,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:25,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632285321] [2019-11-20 00:15:25,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 7752 trivial. 0 not checked. [2019-11-20 00:15:25,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632285321] [2019-11-20 00:15:25,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847290898] [2019-11-20 00:15:25,962 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:26,090 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2019-11-20 00:15:26,090 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:26,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 53 conjunts are in the unsatisfiable core [2019-11-20 00:15:26,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:27,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:27,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 52] total 54 [2019-11-20 00:15:27,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464081376] [2019-11-20 00:15:27,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-11-20 00:15:27,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:27,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-11-20 00:15:27,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1436, Invalid=1644, Unknown=0, NotChecked=0, Total=3080 [2019-11-20 00:15:27,456 INFO L87 Difference]: Start difference. First operand 2487 states and 2873 transitions. Second operand 56 states. [2019-11-20 00:15:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:31,711 INFO L93 Difference]: Finished difference Result 4746 states and 5516 transitions. [2019-11-20 00:15:31,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2019-11-20 00:15:31,712 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 310 [2019-11-20 00:15:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:31,715 INFO L225 Difference]: With dead ends: 4746 [2019-11-20 00:15:31,715 INFO L226 Difference]: Without dead ends: 4745 [2019-11-20 00:15:31,716 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6729 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=8479, Invalid=16643, Unknown=0, NotChecked=0, Total=25122 [2019-11-20 00:15:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4745 states. [2019-11-20 00:15:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4745 to 343. [2019-11-20 00:15:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-11-20 00:15:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 350 transitions. [2019-11-20 00:15:31,734 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 350 transitions. Word has length 310 [2019-11-20 00:15:31,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:31,734 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 350 transitions. [2019-11-20 00:15:31,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 56 states. [2019-11-20 00:15:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 350 transitions. [2019-11-20 00:15:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2019-11-20 00:15:31,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:31,735 INFO L410 BasicCegarLoop]: trace histogram [57, 56, 56, 50, 50, 50, 7, 7, 7, 1, 1] [2019-11-20 00:15:31,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:31,936 INFO L410 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:31,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:31,937 INFO L82 PathProgramCache]: Analyzing trace with hash -826583422, now seen corresponding path program 13 times [2019-11-20 00:15:31,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:31,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737747015] [2019-11-20 00:15:31,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8820 backedges. 0 proven. 8820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:33,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737747015] [2019-11-20 00:15:33,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999882705] [2019-11-20 00:15:33,475 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:33,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 52 conjunts are in the unsatisfiable core [2019-11-20 00:15:33,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8820 backedges. 1262 proven. 7450 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-11-20 00:15:33,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:33,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 52] total 58 [2019-11-20 00:15:33,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486397374] [2019-11-20 00:15:33,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-11-20 00:15:33,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:33,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-11-20 00:15:33,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2019-11-20 00:15:33,642 INFO L87 Difference]: Start difference. First operand 343 states and 350 transitions. Second operand 59 states. [2019-11-20 00:15:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:33,944 INFO L93 Difference]: Finished difference Result 396 states and 411 transitions. [2019-11-20 00:15:33,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-11-20 00:15:33,944 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 342 [2019-11-20 00:15:33,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:33,945 INFO L225 Difference]: With dead ends: 396 [2019-11-20 00:15:33,945 INFO L226 Difference]: Without dead ends: 350 [2019-11-20 00:15:33,946 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2019-11-20 00:15:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2019-11-20 00:15:33,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 349. [2019-11-20 00:15:33,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2019-11-20 00:15:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 356 transitions. [2019-11-20 00:15:33,953 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 356 transitions. Word has length 342 [2019-11-20 00:15:33,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:33,953 INFO L462 AbstractCegarLoop]: Abstraction has 349 states and 356 transitions. [2019-11-20 00:15:33,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-11-20 00:15:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 356 transitions. [2019-11-20 00:15:33,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2019-11-20 00:15:33,954 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:33,955 INFO L410 BasicCegarLoop]: trace histogram [58, 57, 57, 51, 51, 51, 7, 7, 7, 1, 1] [2019-11-20 00:15:34,155 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:34,155 INFO L410 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:34,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1502322565, now seen corresponding path program 14 times [2019-11-20 00:15:34,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:34,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60975853] [2019-11-20 00:15:34,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9147 backedges. 0 proven. 9147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:35,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60975853] [2019-11-20 00:15:35,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715197688] [2019-11-20 00:15:35,741 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:35,809 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:15:35,809 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:35,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 59 conjunts are in the unsatisfiable core [2019-11-20 00:15:35,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9147 backedges. 114 proven. 9033 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:39,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:39,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 59] total 109 [2019-11-20 00:15:39,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731635933] [2019-11-20 00:15:39,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 110 states [2019-11-20 00:15:39,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:39,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2019-11-20 00:15:39,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2019-11-20 00:15:39,004 INFO L87 Difference]: Start difference. First operand 349 states and 356 transitions. Second operand 110 states. [2019-11-20 00:15:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:39,745 INFO L93 Difference]: Finished difference Result 657 states and 765 transitions. [2019-11-20 00:15:39,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2019-11-20 00:15:39,745 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 348 [2019-11-20 00:15:39,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:15:39,746 INFO L225 Difference]: With dead ends: 657 [2019-11-20 00:15:39,746 INFO L226 Difference]: Without dead ends: 656 [2019-11-20 00:15:39,746 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2019-11-20 00:15:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2019-11-20 00:15:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 655. [2019-11-20 00:15:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2019-11-20 00:15:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 713 transitions. [2019-11-20 00:15:39,772 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 713 transitions. Word has length 348 [2019-11-20 00:15:39,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:15:39,772 INFO L462 AbstractCegarLoop]: Abstraction has 655 states and 713 transitions. [2019-11-20 00:15:39,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 110 states. [2019-11-20 00:15:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 713 transitions. [2019-11-20 00:15:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2019-11-20 00:15:39,774 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:15:39,775 INFO L410 BasicCegarLoop]: trace histogram [109, 108, 108, 58, 58, 58, 51, 51, 51, 1, 1] [2019-11-20 00:15:39,975 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:39,975 INFO L410 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:15:39,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:39,976 INFO L82 PathProgramCache]: Analyzing trace with hash -916856348, now seen corresponding path program 15 times [2019-11-20 00:15:39,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:39,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011488677] [2019-11-20 00:15:39,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 29292 backedges. 0 proven. 19545 refuted. 0 times theorem prover too weak. 9747 trivial. 0 not checked. [2019-11-20 00:15:45,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011488677] [2019-11-20 00:15:45,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590135318] [2019-11-20 00:15:45,088 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:45,286 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2019-11-20 00:15:45,286 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:45,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 110 conjunts are in the unsatisfiable core [2019-11-20 00:15:45,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 29292 backedges. 216 proven. 29076 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:52,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:52,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 110] total 213 [2019-11-20 00:15:52,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283350549] [2019-11-20 00:15:52,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 214 states [2019-11-20 00:15:52,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:52,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2019-11-20 00:15:52,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11564, Invalid=34018, Unknown=0, NotChecked=0, Total=45582 [2019-11-20 00:15:52,671 INFO L87 Difference]: Start difference. First operand 655 states and 713 transitions. Second operand 214 states. [2019-11-20 00:16:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:16:17,067 INFO L93 Difference]: Finished difference Result 1316 states and 1534 transitions. [2019-11-20 00:16:17,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 369 states. [2019-11-20 00:16:17,067 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 654 [2019-11-20 00:16:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:16:17,068 INFO L225 Difference]: With dead ends: 1316 [2019-11-20 00:16:17,068 INFO L226 Difference]: Without dead ends: 1315 [2019-11-20 00:16:17,073 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 470 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57949 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=74681, Invalid=147631, Unknown=0, NotChecked=0, Total=222312 [2019-11-20 00:16:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2019-11-20 00:16:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 969. [2019-11-20 00:16:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2019-11-20 00:16:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1079 transitions. [2019-11-20 00:16:17,107 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1079 transitions. Word has length 654 [2019-11-20 00:16:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:16:17,108 INFO L462 AbstractCegarLoop]: Abstraction has 969 states and 1079 transitions. [2019-11-20 00:16:17,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 214 states. [2019-11-20 00:16:17,108 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1079 transitions. [2019-11-20 00:16:17,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2019-11-20 00:16:17,113 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:16:17,113 INFO L410 BasicCegarLoop]: trace histogram [161, 160, 160, 109, 109, 109, 52, 52, 52, 1, 1] [2019-11-20 00:16:17,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:16:17,314 INFO L410 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 00:16:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:16:17,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1840041530, now seen corresponding path program 16 times [2019-11-20 00:16:17,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:16:17,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329306812] [2019-11-20 00:16:17,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:16:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:16:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 65784 backedges. 0 proven. 23040 refuted. 0 times theorem prover too weak. 42744 trivial. 0 not checked. [2019-11-20 00:16:18,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329306812] [2019-11-20 00:16:18,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684584601] [2019-11-20 00:16:18,879 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:16:19,054 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:16:19,054 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:16:19,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 53 conjunts are in the unsatisfiable core [2019-11-20 00:16:19,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:16:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 65784 backedges. 30359 proven. 0 refuted. 0 times theorem prover too weak. 35425 trivial. 0 not checked. [2019-11-20 00:16:20,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 00:16:20,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [6] total 59 [2019-11-20 00:16:20,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755028044] [2019-11-20 00:16:20,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-11-20 00:16:20,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:16:20,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-11-20 00:16:20,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=2093, Unknown=0, NotChecked=0, Total=3540 [2019-11-20 00:16:20,902 INFO L87 Difference]: Start difference. First operand 969 states and 1079 transitions. Second operand 54 states. [2019-11-20 00:16:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:16:21,207 INFO L93 Difference]: Finished difference Result 971 states and 1081 transitions. [2019-11-20 00:16:21,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-11-20 00:16:21,207 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 966 [2019-11-20 00:16:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:16:21,207 INFO L225 Difference]: With dead ends: 971 [2019-11-20 00:16:21,207 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 00:16:21,208 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1230 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1447, Invalid=2093, Unknown=0, NotChecked=0, Total=3540 [2019-11-20 00:16:21,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 00:16:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 00:16:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 00:16:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 00:16:21,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 966 [2019-11-20 00:16:21,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:16:21,209 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:16:21,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 54 states. [2019-11-20 00:16:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 00:16:21,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 00:16:21,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:16:21,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 00:16:22,817 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 841 DAG size of output: 648 [2019-11-20 00:16:26,358 WARN L191 SmtUtils]: Spent 3.53 s on a formula simplification. DAG size of input: 648 DAG size of output: 272 [2019-11-20 00:16:26,371 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-20 00:16:26,371 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 00:16:26,371 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-20 00:16:26,372 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-11-20 00:16:26,372 INFO L444 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-11-20 00:16:26,372 INFO L444 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2019-11-20 00:16:26,372 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-20 00:16:26,372 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-20 00:16:26,372 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 00:16:26,372 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-11-20 00:16:26,372 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 00:16:26,372 INFO L447 ceAbstractionStarter]: At program point L26(lines 14 27) the Hoare annotation is: true [2019-11-20 00:16:26,372 INFO L444 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-11-20 00:16:26,373 INFO L444 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-20 00:16:26,373 INFO L444 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-20 00:16:26,373 INFO L444 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-20 00:16:26,373 INFO L444 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-20 00:16:26,374 INFO L440 ceAbstractionStarter]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse1 (<= ULTIMATE.start_main_~x~0 51)) (.cse0 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~x~0 4) (<= 4 ULTIMATE.start_main_~x~0) (<= .cse0 8)) (and (<= ULTIMATE.start_main_~y~0 21) (<= 21 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 21)) (and (<= 24 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 24) (<= ULTIMATE.start_main_~x~0 24)) (and (<= ULTIMATE.start_main_~x~0 46) (<= .cse0 92) (<= 46 ULTIMATE.start_main_~x~0)) (and (<= 33 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 33) (<= ULTIMATE.start_main_~y~0 33)) (and .cse1 (<= 15 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 15)) (and (<= 43 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 43) (<= ULTIMATE.start_main_~y~0 43)) (and (<= 50 ULTIMATE.start_main_~x~0) (and .cse1 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0))) (and (<= 45 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 45) (<= ULTIMATE.start_main_~x~0 45)) (and (<= ULTIMATE.start_main_~x~0 2) (<= .cse0 4) (<= 2 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 11) (<= 11 ULTIMATE.start_main_~x~0) (<= .cse0 22)) (and (<= 28 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 28) (<= ULTIMATE.start_main_~x~0 28)) (and (<= 7 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 7) (<= ULTIMATE.start_main_~y~0 7)) (and (<= 6 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 6) (<= ULTIMATE.start_main_~y~0 6)) (and (<= 18 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 18) (<= .cse0 36)) (and (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 1) (<= .cse0 2)) (and (<= .cse0 26) (<= ULTIMATE.start_main_~x~0 13) (<= 13 ULTIMATE.start_main_~x~0)) (and .cse1 (<= 25 ULTIMATE.start_main_~x~0) (<= .cse0 50)) (and .cse1 (<= 38 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 38)) (and (<= 26 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 26) (<= .cse0 52)) (and (<= ULTIMATE.start_main_~x~0 42) (<= 42 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 42)) (and (<= 10 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 10) (<= ULTIMATE.start_main_~x~0 10)) (and (<= ULTIMATE.start_main_~x~0 41) (<= 41 ULTIMATE.start_main_~x~0) (<= .cse0 82)) (and (<= ULTIMATE.start_main_~x~0 8) (<= 8 ULTIMATE.start_main_~x~0) (<= .cse0 16)) (and (<= ULTIMATE.start_main_~y~0 44) (<= 44 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 44)) (and (<= .cse0 0) (<= 0 ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~y~0)) (and .cse1 (<= 48 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 48)) (and (<= ULTIMATE.start_main_~x~0 34) (<= 34 ULTIMATE.start_main_~x~0) (<= .cse0 68)) (and (<= 40 ULTIMATE.start_main_~x~0) (<= .cse0 80) (<= ULTIMATE.start_main_~x~0 40)) (and (<= 5 ULTIMATE.start_main_~x~0) (<= .cse0 10) (<= ULTIMATE.start_main_~x~0 5)) (and (<= 14 ULTIMATE.start_main_~x~0) (<= .cse0 28) (<= ULTIMATE.start_main_~x~0 14)) (and (<= 17 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 17) (<= ULTIMATE.start_main_~y~0 17)) (and (<= ULTIMATE.start_main_~x~0 16) (<= ULTIMATE.start_main_~y~0 16) (<= 16 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 39) (<= 39 ULTIMATE.start_main_~x~0) (<= .cse0 78)) (and (<= 32 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 32) (<= ULTIMATE.start_main_~x~0 32)) (and .cse1 (<= .cse0 70) (<= 35 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 12) (<= 12 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 12)) (and (<= 19 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 19) (<= ULTIMATE.start_main_~y~0 19)) (and (<= ULTIMATE.start_main_~x~0 36) (<= 36 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 36)) (and (<= ULTIMATE.start_main_~x~0 30) (<= 30 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 30)) (and (and (<= ULTIMATE.start_main_~x~0 103) (<= .cse0 102)) (<= 51 ULTIMATE.start_main_~x~0)) (and (<= 29 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 29) (<= .cse0 58)) (and (<= ULTIMATE.start_main_~x~0 47) (<= 47 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 47)) (and (<= 23 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 23) (<= ULTIMATE.start_main_~x~0 23)) (and (<= ULTIMATE.start_main_~x~0 50) (<= 49 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 49)) (and (<= ULTIMATE.start_main_~x~0 27) (<= .cse0 54) (<= 27 ULTIMATE.start_main_~x~0)) (and (<= 37 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 37) (<= .cse0 74)) (and (<= 31 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 31) (<= ULTIMATE.start_main_~x~0 31)) (and (<= ULTIMATE.start_main_~x~0 20) (<= ULTIMATE.start_main_~y~0 20) (<= 20 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~y~0 9) (<= ULTIMATE.start_main_~x~0 9) (<= 9 ULTIMATE.start_main_~x~0)) (and .cse1 (<= 3 ULTIMATE.start_main_~x~0) (<= .cse0 6)) (and (<= 22 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 22) (<= .cse0 44)))) [2019-11-20 00:16:26,374 INFO L444 ceAbstractionStarter]: For program point L18-3(lines 18 25) no Hoare annotation was computed. [2019-11-20 00:16:26,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:16:26 BoogieIcfgContainer [2019-11-20 00:16:26,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 00:16:26,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:16:26,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:16:26,404 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:16:26,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:14:13" (3/4) ... [2019-11-20 00:16:26,408 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 00:16:26,417 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 00:16:26,418 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 00:16:26,454 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c4a412bd-b75e-4a45-906c-69bdc9d0d61b/bin/uautomizer/witness.graphml [2019-11-20 00:16:26,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:16:26,456 INFO L168 Benchmark]: Toolchain (without parser) took 133899.61 ms. Allocated memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: 1.1 GB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -196.3 MB). Peak memory consumption was 883.2 MB. Max. memory is 11.5 GB. [2019-11-20 00:16:26,456 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:16:26,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 00:16:26,457 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.02 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 00:16:26,457 INFO L168 Benchmark]: Boogie Preprocessor took 25.35 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 00:16:26,458 INFO L168 Benchmark]: RCFGBuilder took 255.55 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: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-11-20 00:16:26,458 INFO L168 Benchmark]: TraceAbstraction took 133200.20 ms. Allocated memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: 965.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -59.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 11.5 GB. [2019-11-20 00:16:26,459 INFO L168 Benchmark]: Witness Printer took 50.72 ms. Allocated memory is still 2.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-11-20 00:16:26,460 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 328.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.02 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 25.35 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 255.55 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: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 133200.20 ms. Allocated memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: 965.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -59.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 11.5 GB. * Witness Printer took 50.72 ms. Allocated memory is still 2.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((x <= 4 && 4 <= x) && x + y <= 8) || ((y <= 21 && 21 <= x) && x <= 21)) || ((24 <= x && y <= 24) && x <= 24)) || ((x <= 46 && x + y <= 92) && 46 <= x)) || ((33 <= x && x <= 33) && y <= 33)) || ((x <= 51 && 15 <= x) && y <= 15)) || ((43 <= x && x <= 43) && y <= 43)) || (50 <= x && x <= 51 && y <= x)) || ((45 <= x && y <= 45) && x <= 45)) || ((x <= 2 && x + y <= 4) && 2 <= x)) || ((x <= 11 && 11 <= x) && x + y <= 22)) || ((28 <= x && y <= 28) && x <= 28)) || ((7 <= x && x <= 7) && y <= 7)) || ((6 <= x && x <= 6) && y <= 6)) || ((18 <= x && x <= 18) && x + y <= 36)) || ((1 <= x && x <= 1) && x + y <= 2)) || ((x + y <= 26 && x <= 13) && 13 <= x)) || ((x <= 51 && 25 <= x) && x + y <= 50)) || ((x <= 51 && 38 <= x) && y <= 38)) || ((26 <= x && x <= 26) && x + y <= 52)) || ((x <= 42 && 42 <= x) && y <= 42)) || ((10 <= x && y <= 10) && x <= 10)) || ((x <= 41 && 41 <= x) && x + y <= 82)) || ((x <= 8 && 8 <= x) && x + y <= 16)) || ((y <= 44 && 44 <= x) && x <= 44)) || ((x + y <= 0 && 0 <= x) && 0 <= y)) || ((x <= 51 && 48 <= x) && y <= 48)) || ((x <= 34 && 34 <= x) && x + y <= 68)) || ((40 <= x && x + y <= 80) && x <= 40)) || ((5 <= x && x + y <= 10) && x <= 5)) || ((14 <= x && x + y <= 28) && x <= 14)) || ((17 <= x && x <= 17) && y <= 17)) || ((x <= 16 && y <= 16) && 16 <= x)) || ((x <= 39 && 39 <= x) && x + y <= 78)) || ((32 <= x && y <= 32) && x <= 32)) || ((x <= 51 && x + y <= 70) && 35 <= x)) || ((x <= 12 && 12 <= x) && y <= 12)) || ((19 <= x && x <= 19) && y <= 19)) || ((x <= 36 && 36 <= x) && y <= 36)) || ((x <= 30 && 30 <= x) && y <= 30)) || ((x <= 103 && x + y <= 102) && 51 <= x)) || ((29 <= x && x <= 29) && x + y <= 58)) || ((x <= 47 && 47 <= x) && y <= 47)) || ((23 <= x && y <= 23) && x <= 23)) || ((x <= 50 && 49 <= x) && y <= 49)) || ((x <= 27 && x + y <= 54) && 27 <= x)) || ((37 <= x && x <= 37) && x + y <= 74)) || ((31 <= x && y <= 31) && x <= 31)) || ((x <= 20 && y <= 20) && 20 <= x)) || ((y <= 9 && x <= 9) && 9 <= x)) || ((x <= 51 && 3 <= x) && x + y <= 6)) || ((22 <= x && x <= 22) && x + y <= 44) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Result: SAFE, OverallTime: 133.1s, OverallIterations: 72, TraceHistogramMax: 161, AutomataDifference: 50.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.9s, HoareTripleCheckerStatistics: 2773 SDtfs, 10014 SDslu, 23681 SDs, 0 SdLazy, 31616 SolverSat, 2756 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14811 GetRequests, 12343 SyntacticMatches, 0 SemanticMatches, 2468 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64842 ImplicationChecksByTransitivity, 69.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2487occurred in iteration=67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 72 MinimizatonAttempts, 36105 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 56 NumberOfFragments, 572 HoareAnnotationTreeSize, 2 FomulaSimplifications, 603 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 2 FomulaSimplificationsInter, 36845 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 53.6s InterpolantComputationTime, 24136 NumberOfCodeBlocks, 23734 NumberOfCodeBlocksAsserted, 963 NumberOfCheckSat, 23996 ConstructedInterpolants, 0 QuantifiedInterpolants, 22278028 SizeOfPredicates, 8 NumberOfNonLiveVariables, 19596 ConjunctsInSsa, 1876 ConjunctsInUnsatCore, 140 InterpolantComputations, 6 PerfectInterpolantSequences, 139636/543160 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...