./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/TwoWay.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_6bc90ceb-318f-4740-a1ee-73390c17e314/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/TwoWay.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/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 dd635190a9aa277670265f46b90ecce0c321a2a9 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:45:29,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:45:29,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:45:29,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:45:29,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:45:29,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:45:29,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:45:29,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:45:29,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:45:29,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:45:29,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:45:29,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:45:29,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:45:29,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:45:29,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:45:29,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:45:29,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:45:29,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:45:29,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:45:29,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:45:29,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:45:29,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:45:29,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:45:29,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:45:29,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:45:29,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:45:29,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:45:29,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:45:29,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:45:29,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:45:29,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:45:29,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:45:29,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:45:29,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:45:29,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:45:29,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:45:29,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:45:29,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:45:29,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:45:29,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:45:29,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:45:29,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-20 06:45:29,548 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:45:29,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:45:29,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:45:29,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:45:29,549 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:45:29,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:45:29,550 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 06:45:29,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 06:45:29,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:45:29,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 06:45:29,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 06:45:29,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 06:45:29,551 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-20 06:45:29,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 06:45:29,552 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:45:29,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 06:45:29,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:45:29,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:45:29,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 06:45:29,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 06:45:29,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:45:29,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:45:29,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 06:45:29,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 06:45:29,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 06:45:29,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 06:45:29,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 06:45:29,554 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_6bc90ceb-318f-4740-a1ee-73390c17e314/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 -> dd635190a9aa277670265f46b90ecce0c321a2a9 [2019-11-20 06:45:29,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:45:29,731 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:45:29,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:45:29,735 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:45:29,735 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:45:29,735 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/TwoWay.c [2019-11-20 06:45:29,791 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/bin/uautomizer/data/8526e5bd0/9ce9af463b764a79827cb560831f6c09/FLAG1b9e9e9b6 [2019-11-20 06:45:30,157 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:45:30,157 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/sv-benchmarks/c/termination-numeric/TwoWay.c [2019-11-20 06:45:30,163 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/bin/uautomizer/data/8526e5bd0/9ce9af463b764a79827cb560831f6c09/FLAG1b9e9e9b6 [2019-11-20 06:45:30,585 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/bin/uautomizer/data/8526e5bd0/9ce9af463b764a79827cb560831f6c09 [2019-11-20 06:45:30,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:45:30,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 06:45:30,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:45:30,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:45:30,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:45:30,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:45:30" (1/1) ... [2019-11-20 06:45:30,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d510fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30, skipping insertion in model container [2019-11-20 06:45:30,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:45:30" (1/1) ... [2019-11-20 06:45:30,603 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:45:30,617 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:45:30,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:45:30,762 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:45:30,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:45:30,852 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:45:30,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30 WrapperNode [2019-11-20 06:45:30,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:45:30,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 06:45:30,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 06:45:30,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 06:45:30,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30" (1/1) ... [2019-11-20 06:45:30,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30" (1/1) ... [2019-11-20 06:45:30,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 06:45:30,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:45:30,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:45:30,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:45:30,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30" (1/1) ... [2019-11-20 06:45:30,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30" (1/1) ... [2019-11-20 06:45:30,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30" (1/1) ... [2019-11-20 06:45:30,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30" (1/1) ... [2019-11-20 06:45:30,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30" (1/1) ... [2019-11-20 06:45:30,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30" (1/1) ... [2019-11-20 06:45:30,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30" (1/1) ... [2019-11-20 06:45:30,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:45:30,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:45:30,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:45:30,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:45:30,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/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 06:45:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2019-11-20 06:45:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2019-11-20 06:45:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:45:30,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:45:31,217 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:45:31,217 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 06:45:31,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:45:31 BoogieIcfgContainer [2019-11-20 06:45:31,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:45:31,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 06:45:31,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 06:45:31,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 06:45:31,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:45:30" (1/3) ... [2019-11-20 06:45:31,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51856339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:45:31, skipping insertion in model container [2019-11-20 06:45:31,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:45:30" (2/3) ... [2019-11-20 06:45:31,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51856339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:45:31, skipping insertion in model container [2019-11-20 06:45:31,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:45:31" (3/3) ... [2019-11-20 06:45:31,226 INFO L109 eAbstractionObserver]: Analyzing ICFG TwoWay.c [2019-11-20 06:45:31,235 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 06:45:31,241 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-20 06:45:31,251 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-20 06:45:31,283 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 06:45:31,283 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 06:45:31,284 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 06:45:31,284 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:45:31,284 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:45:31,284 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 06:45:31,300 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:45:31,300 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 06:45:31,326 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-20 06:45:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 06:45:31,331 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:45:31,331 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:45:31,332 INFO L410 AbstractCegarLoop]: === Iteration 1 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:45:31,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:45:31,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939443, now seen corresponding path program 1 times [2019-11-20 06:45:31,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:45:31,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232085431] [2019-11-20 06:45:31,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:45:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:45:31,617 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 06:45:31,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232085431] [2019-11-20 06:45:31,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:45:31,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 06:45:31,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590712358] [2019-11-20 06:45:31,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 06:45:31,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:45:31,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 06:45:31,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:45:31,639 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2019-11-20 06:45:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:45:31,872 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2019-11-20 06:45:31,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 06:45:31,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-20 06:45:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:45:31,885 INFO L225 Difference]: With dead ends: 56 [2019-11-20 06:45:31,885 INFO L226 Difference]: Without dead ends: 51 [2019-11-20 06:45:31,898 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-20 06:45:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-20 06:45:31,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 37. [2019-11-20 06:45:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-20 06:45:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-20 06:45:31,947 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 8 [2019-11-20 06:45:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:45:31,947 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-20 06:45:31,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 06:45:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2019-11-20 06:45:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 06:45:31,948 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:45:31,948 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:45:31,949 INFO L410 AbstractCegarLoop]: === Iteration 2 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:45:31,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:45:31,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939635, now seen corresponding path program 1 times [2019-11-20 06:45:31,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:45:31,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396071246] [2019-11-20 06:45:31,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:45:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:45:31,979 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 06:45:31,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396071246] [2019-11-20 06:45:31,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:45:31,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 06:45:31,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758225759] [2019-11-20 06:45:31,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 06:45:31,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:45:31,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 06:45:31,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 06:45:31,983 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-20 06:45:32,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:45:32,012 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-11-20 06:45:32,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 06:45:32,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-20 06:45:32,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:45:32,013 INFO L225 Difference]: With dead ends: 45 [2019-11-20 06:45:32,013 INFO L226 Difference]: Without dead ends: 18 [2019-11-20 06:45:32,015 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:45:32,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-20 06:45:32,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-20 06:45:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 06:45:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-20 06:45:32,019 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2019-11-20 06:45:32,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:45:32,019 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-20 06:45:32,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 06:45:32,020 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-20 06:45:32,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 06:45:32,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:45:32,020 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:45:32,021 INFO L410 AbstractCegarLoop]: === Iteration 3 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:45:32,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:45:32,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2051452074, now seen corresponding path program 1 times [2019-11-20 06:45:32,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:45:32,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090407150] [2019-11-20 06:45:32,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:45:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:45:32,097 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 06:45:32,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090407150] [2019-11-20 06:45:32,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:45:32,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 06:45:32,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930977402] [2019-11-20 06:45:32,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 06:45:32,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:45:32,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 06:45:32,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:45:32,099 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states. [2019-11-20 06:45:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:45:32,197 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2019-11-20 06:45:32,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 06:45:32,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-20 06:45:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:45:32,198 INFO L225 Difference]: With dead ends: 35 [2019-11-20 06:45:32,199 INFO L226 Difference]: Without dead ends: 30 [2019-11-20 06:45:32,199 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-20 06:45:32,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-20 06:45:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2019-11-20 06:45:32,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 06:45:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-20 06:45:32,211 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 9 [2019-11-20 06:45:32,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:45:32,212 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-20 06:45:32,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 06:45:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-20 06:45:32,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 06:45:32,213 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:45:32,214 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:45:32,214 INFO L410 AbstractCegarLoop]: === Iteration 4 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:45:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:45:32,215 INFO L82 PathProgramCache]: Analyzing trace with hash 2048642091, now seen corresponding path program 1 times [2019-11-20 06:45:32,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:45:32,215 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035332805] [2019-11-20 06:45:32,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:45:32,236 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 06:45:32,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987069765] [2019-11-20 06:45:32,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/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 06:45:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:45:32,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 06:45:32,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:45:32,393 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 06:45:32,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035332805] [2019-11-20 06:45:32,394 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 06:45:32,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987069765] [2019-11-20 06:45:32,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 06:45:32,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-20 06:45:32,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024971439] [2019-11-20 06:45:32,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 06:45:32,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:45:32,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 06:45:32,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-20 06:45:32,396 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 10 states. [2019-11-20 06:45:32,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:45:32,564 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-11-20 06:45:32,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 06:45:32,564 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-20 06:45:32,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:45:32,565 INFO L225 Difference]: With dead ends: 36 [2019-11-20 06:45:32,565 INFO L226 Difference]: Without dead ends: 35 [2019-11-20 06:45:32,566 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-20 06:45:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-20 06:45:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2019-11-20 06:45:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-20 06:45:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-11-20 06:45:32,572 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2019-11-20 06:45:32,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:45:32,574 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-20 06:45:32,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 06:45:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-11-20 06:45:32,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 06:45:32,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:45:32,576 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:45:32,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:45:32,779 INFO L410 AbstractCegarLoop]: === Iteration 5 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:45:32,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:45:32,779 INFO L82 PathProgramCache]: Analyzing trace with hash -916604565, now seen corresponding path program 1 times [2019-11-20 06:45:32,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:45:32,781 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034507998] [2019-11-20 06:45:32,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:45:32,814 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 06:45:32,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171214846] [2019-11-20 06:45:32,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/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 06:45:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:45:32,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 06:45:32,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:45:32,934 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 06:45:32,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034507998] [2019-11-20 06:45:32,934 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 06:45:32,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171214846] [2019-11-20 06:45:32,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 06:45:32,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-20 06:45:32,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947949889] [2019-11-20 06:45:32,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 06:45:32,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:45:32,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 06:45:32,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-11-20 06:45:32,936 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 10 states. [2019-11-20 06:45:33,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:45:33,163 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-11-20 06:45:33,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 06:45:33,164 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-20 06:45:33,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:45:33,165 INFO L225 Difference]: With dead ends: 37 [2019-11-20 06:45:33,165 INFO L226 Difference]: Without dead ends: 33 [2019-11-20 06:45:33,166 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2019-11-20 06:45:33,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-20 06:45:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-11-20 06:45:33,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 06:45:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-20 06:45:33,172 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 17 [2019-11-20 06:45:33,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:45:33,172 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-20 06:45:33,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 06:45:33,173 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-20 06:45:33,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 06:45:33,174 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:45:33,174 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:45:33,377 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:45:33,377 INFO L410 AbstractCegarLoop]: === Iteration 6 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:45:33,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:45:33,378 INFO L82 PathProgramCache]: Analyzing trace with hash 37921722, now seen corresponding path program 1 times [2019-11-20 06:45:33,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:45:33,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356038961] [2019-11-20 06:45:33,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:45:33,389 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 06:45:33,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234939220] [2019-11-20 06:45:33,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/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 06:45:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:45:33,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 06:45:33,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:45:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 06:45:33,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356038961] [2019-11-20 06:45:33,570 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 06:45:33,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234939220] [2019-11-20 06:45:33,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 06:45:33,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-11-20 06:45:33,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469293638] [2019-11-20 06:45:33,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 06:45:33,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:45:33,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 06:45:33,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-20 06:45:33,572 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 11 states. [2019-11-20 06:45:33,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:45:33,862 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-11-20 06:45:33,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 06:45:33,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2019-11-20 06:45:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:45:33,863 INFO L225 Difference]: With dead ends: 41 [2019-11-20 06:45:33,863 INFO L226 Difference]: Without dead ends: 40 [2019-11-20 06:45:33,864 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2019-11-20 06:45:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-20 06:45:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-11-20 06:45:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-20 06:45:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-11-20 06:45:33,870 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 27 [2019-11-20 06:45:33,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:45:33,871 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-11-20 06:45:33,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 06:45:33,871 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-11-20 06:45:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 06:45:33,872 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:45:33,872 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:45:34,075 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:45:34,075 INFO L410 AbstractCegarLoop]: === Iteration 7 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:45:34,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:45:34,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1175573436, now seen corresponding path program 1 times [2019-11-20 06:45:34,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:45:34,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087065892] [2019-11-20 06:45:34,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:45:34,085 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 06:45:34,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600564521] [2019-11-20 06:45:34,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/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 06:45:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:45:34,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 06:45:34,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:45:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 06:45:34,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087065892] [2019-11-20 06:45:34,324 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 06:45:34,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600564521] [2019-11-20 06:45:34,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 06:45:34,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-11-20 06:45:34,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095458972] [2019-11-20 06:45:34,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 06:45:34,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:45:34,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 06:45:34,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-11-20 06:45:34,325 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 16 states. [2019-11-20 06:45:34,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:45:34,619 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-20 06:45:34,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 06:45:34,620 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2019-11-20 06:45:34,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:45:34,621 INFO L225 Difference]: With dead ends: 40 [2019-11-20 06:45:34,621 INFO L226 Difference]: Without dead ends: 36 [2019-11-20 06:45:34,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2019-11-20 06:45:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-20 06:45:34,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-20 06:45:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-20 06:45:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2019-11-20 06:45:34,625 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 28 [2019-11-20 06:45:34,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:45:34,625 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2019-11-20 06:45:34,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 06:45:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2019-11-20 06:45:34,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-20 06:45:34,627 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:45:34,627 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 06:45:34,828 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:45:34,829 INFO L410 AbstractCegarLoop]: === Iteration 8 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:45:34,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:45:34,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1112227299, now seen corresponding path program 2 times [2019-11-20 06:45:34,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:45:34,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311859801] [2019-11-20 06:45:34,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:45:34,845 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 06:45:34,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143112482] [2019-11-20 06:45:34,845 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/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 06:45:34,906 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 06:45:34,906 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:45:34,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-20 06:45:34,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:45:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 18 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 06:45:35,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311859801] [2019-11-20 06:45:35,356 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 06:45:35,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143112482] [2019-11-20 06:45:35,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 06:45:35,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2019-11-20 06:45:35,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216146051] [2019-11-20 06:45:35,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-20 06:45:35,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:45:35,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-20 06:45:35,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2019-11-20 06:45:35,358 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 29 states. [2019-11-20 06:45:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:45:36,180 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2019-11-20 06:45:36,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-20 06:45:36,180 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 50 [2019-11-20 06:45:36,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:45:36,182 INFO L225 Difference]: With dead ends: 69 [2019-11-20 06:45:36,182 INFO L226 Difference]: Without dead ends: 68 [2019-11-20 06:45:36,183 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=387, Invalid=1683, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 06:45:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-20 06:45:36,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2019-11-20 06:45:36,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-20 06:45:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2019-11-20 06:45:36,194 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 50 [2019-11-20 06:45:36,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:45:36,194 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2019-11-20 06:45:36,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-20 06:45:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2019-11-20 06:45:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-20 06:45:36,196 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:45:36,196 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 06:45:36,408 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:45:36,409 INFO L410 AbstractCegarLoop]: === Iteration 9 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:45:36,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:45:36,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1355949953, now seen corresponding path program 2 times [2019-11-20 06:45:36,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:45:36,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866657186] [2019-11-20 06:45:36,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:45:36,420 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 06:45:36,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608823912] [2019-11-20 06:45:36,421 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/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 06:45:36,466 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 06:45:36,466 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:45:36,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 06:45:36,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:45:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-20 06:45:36,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866657186] [2019-11-20 06:45:36,624 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 06:45:36,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608823912] [2019-11-20 06:45:36,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 06:45:36,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2019-11-20 06:45:36,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236086436] [2019-11-20 06:45:36,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 06:45:36,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:45:36,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 06:45:36,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2019-11-20 06:45:36,625 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 15 states. [2019-11-20 06:45:36,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:45:36,872 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2019-11-20 06:45:36,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 06:45:36,873 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2019-11-20 06:45:36,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:45:36,874 INFO L225 Difference]: With dead ends: 58 [2019-11-20 06:45:36,875 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 06:45:36,875 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2019-11-20 06:45:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 06:45:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-20 06:45:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-20 06:45:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2019-11-20 06:45:36,883 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 39 [2019-11-20 06:45:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:45:36,883 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2019-11-20 06:45:36,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 06:45:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2019-11-20 06:45:36,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-20 06:45:36,885 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:45:36,885 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-20 06:45:37,092 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:45:37,093 INFO L410 AbstractCegarLoop]: === Iteration 10 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:45:37,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:45:37,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1459996636, now seen corresponding path program 3 times [2019-11-20 06:45:37,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:45:37,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577156104] [2019-11-20 06:45:37,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:45:37,110 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 06:45:37,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977890910] [2019-11-20 06:45:37,111 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/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 06:45:38,805 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 06:45:38,805 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:45:38,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-20 06:45:38,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:45:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 36 proven. 24 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-11-20 06:45:39,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577156104] [2019-11-20 06:45:39,014 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 06:45:39,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977890910] [2019-11-20 06:45:39,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 06:45:39,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2019-11-20 06:45:39,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727129773] [2019-11-20 06:45:39,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 06:45:39,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:45:39,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 06:45:39,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-11-20 06:45:39,017 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 13 states. [2019-11-20 06:45:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:45:39,300 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2019-11-20 06:45:39,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 06:45:39,301 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2019-11-20 06:45:39,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:45:39,301 INFO L225 Difference]: With dead ends: 54 [2019-11-20 06:45:39,301 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 06:45:39,302 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2019-11-20 06:45:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 06:45:39,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 06:45:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 06:45:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 06:45:39,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2019-11-20 06:45:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:45:39,303 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 06:45:39,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 06:45:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 06:45:39,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 06:45:39,504 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:45:39,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 06:45:39,648 INFO L444 ceAbstractionStarter]: For program point L31(lines 31 35) no Hoare annotation was computed. [2019-11-20 06:45:39,649 INFO L440 ceAbstractionStarter]: At program point L31-2(lines 31 35) the Hoare annotation is: (let ((.cse0 (not (<= 1 |twoWay_#in~terminate|)))) (and (or .cse0 (not (<= |twoWay_#in~n| 2147483646)) (and (<= 0 twoWay_~n) (<= twoWay_~n |twoWay_#in~n|))) (or (not (<= |twoWay_#in~n| 2147483647)) (and (<= |twoWay_#in~n| twoWay_~n) (<= 1 twoWay_~terminate) (= |twoWay_#in~n| (+ twoWay_~m~0 1)) (<= twoWay_~n 2147483647)) .cse0))) [2019-11-20 06:45:39,649 INFO L444 ceAbstractionStarter]: For program point L27(lines 27 37) no Hoare annotation was computed. [2019-11-20 06:45:39,649 INFO L444 ceAbstractionStarter]: For program point twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-20 06:45:39,649 INFO L444 ceAbstractionStarter]: For program point twoWayFINAL(lines 26 38) no Hoare annotation was computed. [2019-11-20 06:45:39,649 INFO L444 ceAbstractionStarter]: For program point twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2019-11-20 06:45:39,649 INFO L444 ceAbstractionStarter]: For program point twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2019-11-20 06:45:39,649 INFO L444 ceAbstractionStarter]: For program point L36(line 36) no Hoare annotation was computed. [2019-11-20 06:45:39,650 INFO L444 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2019-11-20 06:45:39,650 INFO L444 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2019-11-20 06:45:39,650 INFO L444 ceAbstractionStarter]: For program point L36-2(line 36) no Hoare annotation was computed. [2019-11-20 06:45:39,650 INFO L444 ceAbstractionStarter]: For program point L34-1(line 34) no Hoare annotation was computed. [2019-11-20 06:45:39,650 INFO L444 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2019-11-20 06:45:39,650 INFO L444 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-11-20 06:45:39,650 INFO L447 ceAbstractionStarter]: At program point twoWayENTRY(lines 26 38) the Hoare annotation is: true [2019-11-20 06:45:39,650 INFO L444 ceAbstractionStarter]: For program point twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-20 06:45:39,650 INFO L444 ceAbstractionStarter]: For program point twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2019-11-20 06:45:39,650 INFO L444 ceAbstractionStarter]: For program point twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2019-11-20 06:45:39,651 INFO L444 ceAbstractionStarter]: For program point twoWayEXIT(lines 26 38) no Hoare annotation was computed. [2019-11-20 06:45:39,651 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 06:45:39,651 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 06:45:39,651 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 06:45:39,651 INFO L440 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-20 06:45:39,651 INFO L444 ceAbstractionStarter]: For program point L48-1(line 48) no Hoare annotation was computed. [2019-11-20 06:45:39,651 INFO L444 ceAbstractionStarter]: For program point L45(lines 45 46) no Hoare annotation was computed. [2019-11-20 06:45:39,651 INFO L444 ceAbstractionStarter]: For program point L42(lines 42 43) no Hoare annotation was computed. [2019-11-20 06:45:39,651 INFO L440 ceAbstractionStarter]: At program point L40(lines 40 50) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-11-20 06:45:39,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:45:39 BoogieIcfgContainer [2019-11-20 06:45:39,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 06:45:39,664 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 06:45:39,664 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 06:45:39,664 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 06:45:39,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:45:31" (3/4) ... [2019-11-20 06:45:39,668 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 06:45:39,673 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure twoWay [2019-11-20 06:45:39,677 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-20 06:45:39,678 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 06:45:39,717 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6bc90ceb-318f-4740-a1ee-73390c17e314/bin/uautomizer/witness.graphml [2019-11-20 06:45:39,717 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 06:45:39,719 INFO L168 Benchmark]: Toolchain (without parser) took 9129.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.2 MB). Free memory was 950.1 MB in the beginning and 929.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 188.0 MB. Max. memory is 11.5 GB. [2019-11-20 06:45:39,719 INFO L168 Benchmark]: CDTParser took 1.01 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 06:45:39,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 06:45:39,720 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:45:39,721 INFO L168 Benchmark]: Boogie Preprocessor took 32.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:45:39,721 INFO L168 Benchmark]: RCFGBuilder took 298.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-20 06:45:39,722 INFO L168 Benchmark]: TraceAbstraction took 8444.19 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 38.3 MB). Free memory was 1.1 GB in the beginning and 937.3 MB in the end (delta: 169.5 MB). Peak memory consumption was 207.7 MB. Max. memory is 11.5 GB. [2019-11-20 06:45:39,722 INFO L168 Benchmark]: Witness Printer took 53.49 ms. Allocated memory is still 1.2 GB. Free memory was 937.3 MB in the beginning and 929.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-11-20 06:45:39,724 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01 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 263.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 298.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8444.19 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 38.3 MB). Free memory was 1.1 GB in the beginning and 937.3 MB in the end (delta: 169.5 MB). Peak memory consumption was 207.7 MB. Max. memory is 11.5 GB. * Witness Printer took 53.49 ms. Allocated memory is still 1.2 GB. Free memory was 937.3 MB in the beginning and 929.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: 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: 40]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 6 error locations. Result: SAFE, OverallTime: 8.3s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 124 SDtfs, 793 SDslu, 579 SDs, 0 SdLazy, 1326 SolverSat, 334 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 38 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 14 PreInvPairs, 18 NumberOfFragments, 52 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 269 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 259 ConstructedInterpolants, 9 QuantifiedInterpolants, 52216 SizeOfPredicates, 46 NumberOfNonLiveVariables, 669 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 194/322 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...