./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/TwoWay.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/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-cad4683 [2019-11-15 21:39:58,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:39:58,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:39:58,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:39:58,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:39:58,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:39:58,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:39:58,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:39:58,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:39:58,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:39:58,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:39:58,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:39:58,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:39:58,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:39:58,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:39:58,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:39:58,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:39:58,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:39:58,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:39:58,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:39:58,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:39:58,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:39:58,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:39:58,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:39:58,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:39:58,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:39:58,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:39:58,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:39:58,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:39:58,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:39:58,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:39:58,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:39:58,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:39:58,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:39:58,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:39:58,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:39:58,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:39:58,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:39:58,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:39:58,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:39:58,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:39:58,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-15 21:39:58,318 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:39:58,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:39:58,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:39:58,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:39:58,320 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:39:58,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:39:58,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:39:58,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:39:58,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:39:58,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:39:58,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:39:58,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:39:58,321 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-15 21:39:58,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:39:58,322 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:39:58,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:39:58,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:39:58,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:39:58,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:39:58,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:39:58,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:39:58,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:39:58,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:39:58,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:39:58,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:39:58,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:39:58,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:39:58,324 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_c866a745-8425-4e49-8581-083a10e02b7e/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 [2019-11-15 21:39:58,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:39:58,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:39:58,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:39:58,369 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:39:58,369 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:39:58,370 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/TwoWay.c [2019-11-15 21:39:58,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/bin/uautomizer/data/004858e2d/552f39f2552d417e8bf36d28e06e4f39/FLAG4c37c5b02 [2019-11-15 21:39:58,823 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:39:58,823 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/sv-benchmarks/c/termination-numeric/TwoWay.c [2019-11-15 21:39:58,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/bin/uautomizer/data/004858e2d/552f39f2552d417e8bf36d28e06e4f39/FLAG4c37c5b02 [2019-11-15 21:39:58,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/bin/uautomizer/data/004858e2d/552f39f2552d417e8bf36d28e06e4f39 [2019-11-15 21:39:58,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:39:58,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:39:58,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:39:58,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:39:58,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:39:58,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:39:58" (1/1) ... [2019-11-15 21:39:58,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a328ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:58, skipping insertion in model container [2019-11-15 21:39:58,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:39:58" (1/1) ... [2019-11-15 21:39:58,870 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:39:58,886 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:39:59,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:39:59,084 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:39:59,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:39:59,177 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:39:59,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59 WrapperNode [2019-11-15 21:39:59,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:39:59,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:39:59,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:39:59,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:39:59,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59" (1/1) ... [2019-11-15 21:39:59,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59" (1/1) ... [2019-11-15 21:39:59,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:39:59,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:39:59,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:39:59,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:39:59,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59" (1/1) ... [2019-11-15 21:39:59,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59" (1/1) ... [2019-11-15 21:39:59,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59" (1/1) ... [2019-11-15 21:39:59,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59" (1/1) ... [2019-11-15 21:39:59,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59" (1/1) ... [2019-11-15 21:39:59,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59" (1/1) ... [2019-11-15 21:39:59,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59" (1/1) ... [2019-11-15 21:39:59,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:39:59,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:39:59,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:39:59,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:39:59,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/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 [2019-11-15 21:39:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2019-11-15 21:39:59,284 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2019-11-15 21:39:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:39:59,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:39:59,615 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:39:59,615 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 21:39:59,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:39:59 BoogieIcfgContainer [2019-11-15 21:39:59,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:39:59,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:39:59,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:39:59,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:39:59,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:39:58" (1/3) ... [2019-11-15 21:39:59,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff527a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:39:59, skipping insertion in model container [2019-11-15 21:39:59,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:39:59" (2/3) ... [2019-11-15 21:39:59,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff527a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:39:59, skipping insertion in model container [2019-11-15 21:39:59,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:39:59" (3/3) ... [2019-11-15 21:39:59,635 INFO L109 eAbstractionObserver]: Analyzing ICFG TwoWay.c [2019-11-15 21:39:59,644 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:39:59,651 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-15 21:39:59,667 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-15 21:39:59,694 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:39:59,694 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:39:59,695 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:39:59,695 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:39:59,695 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:39:59,695 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:39:59,695 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:39:59,696 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:39:59,713 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-15 21:39:59,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 21:39:59,719 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:39:59,720 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:39:59,722 INFO L410 AbstractCegarLoop]: === Iteration 1 === [twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:39:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:39:59,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939443, now seen corresponding path program 1 times [2019-11-15 21:39:59,732 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:39:59,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396807465] [2019-11-15 21:39:59,733 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:59,733 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:39:59,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:39:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:39:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:39:59,898 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396807465] [2019-11-15 21:39:59,899 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:39:59,899 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 21:39:59,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940642390] [2019-11-15 21:39:59,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 21:39:59,904 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:39:59,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 21:39:59,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:39:59,916 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2019-11-15 21:40:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:00,250 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2019-11-15 21:40:00,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 21:40:00,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-15 21:40:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:00,262 INFO L225 Difference]: With dead ends: 56 [2019-11-15 21:40:00,262 INFO L226 Difference]: Without dead ends: 51 [2019-11-15 21:40:00,265 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:40:00,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-15 21:40:00,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 37. [2019-11-15 21:40:00,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-15 21:40:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-15 21:40:00,307 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 8 [2019-11-15 21:40:00,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:00,308 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-15 21:40:00,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 21:40:00,308 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2019-11-15 21:40:00,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 21:40:00,309 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:00,309 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:00,309 INFO L410 AbstractCegarLoop]: === Iteration 2 === [twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:40:00,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:00,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939635, now seen corresponding path program 1 times [2019-11-15 21:40:00,310 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:00,310 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689909195] [2019-11-15 21:40:00,310 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:00,310 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:00,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:00,341 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689909195] [2019-11-15 21:40:00,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:40:00,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 21:40:00,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130076399] [2019-11-15 21:40:00,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:40:00,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:00,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:40:00,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:40:00,344 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-15 21:40:00,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:00,372 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-11-15 21:40:00,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:40:00,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 21:40:00,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:00,373 INFO L225 Difference]: With dead ends: 45 [2019-11-15 21:40:00,373 INFO L226 Difference]: Without dead ends: 18 [2019-11-15 21:40:00,375 INFO L600 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 [2019-11-15 21:40:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-15 21:40:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-15 21:40:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 21:40:00,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-15 21:40:00,379 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2019-11-15 21:40:00,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:00,379 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-15 21:40:00,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:40:00,379 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-15 21:40:00,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 21:40:00,380 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:00,380 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:00,380 INFO L410 AbstractCegarLoop]: === Iteration 3 === [twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:40:00,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:00,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2051452074, now seen corresponding path program 1 times [2019-11-15 21:40:00,383 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:00,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535324110] [2019-11-15 21:40:00,384 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:00,385 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:00,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:00,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535324110] [2019-11-15 21:40:00,470 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:40:00,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 21:40:00,470 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410585130] [2019-11-15 21:40:00,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 21:40:00,471 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:00,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 21:40:00,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:40:00,471 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states. [2019-11-15 21:40:00,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:00,573 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2019-11-15 21:40:00,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 21:40:00,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-15 21:40:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:00,575 INFO L225 Difference]: With dead ends: 35 [2019-11-15 21:40:00,575 INFO L226 Difference]: Without dead ends: 30 [2019-11-15 21:40:00,576 INFO L600 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 [2019-11-15 21:40:00,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-15 21:40:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2019-11-15 21:40:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 21:40:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-15 21:40:00,585 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 9 [2019-11-15 21:40:00,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:00,585 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-15 21:40:00,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 21:40:00,585 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-15 21:40:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 21:40:00,586 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:00,586 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:00,586 INFO L410 AbstractCegarLoop]: === Iteration 4 === [twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:40:00,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:00,587 INFO L82 PathProgramCache]: Analyzing trace with hash 2048642091, now seen corresponding path program 1 times [2019-11-15 21:40:00,587 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:00,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970949828] [2019-11-15 21:40:00,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:00,588 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:00,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:00,615 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:40:00,615 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741692499] [2019-11-15 21:40:00,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/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 [2019-11-15 21:40:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:00,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 21:40:00,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:00,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:00,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970949828] [2019-11-15 21:40:00,762 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:40:00,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741692499] [2019-11-15 21:40:00,762 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:40:00,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-15 21:40:00,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678044838] [2019-11-15 21:40:00,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 21:40:00,763 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:00,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 21:40:00,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:40:00,764 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 10 states. [2019-11-15 21:40:00,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:00,923 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-11-15 21:40:00,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 21:40:00,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-15 21:40:00,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:00,925 INFO L225 Difference]: With dead ends: 36 [2019-11-15 21:40:00,925 INFO L226 Difference]: Without dead ends: 35 [2019-11-15 21:40:00,925 INFO L600 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 [2019-11-15 21:40:00,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-15 21:40:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2019-11-15 21:40:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-15 21:40:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-11-15 21:40:00,931 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2019-11-15 21:40:00,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:00,931 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-15 21:40:00,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 21:40:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-11-15 21:40:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 21:40:00,934 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:00,934 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:01,135 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:01,135 INFO L410 AbstractCegarLoop]: === Iteration 5 === [twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:40:01,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:01,136 INFO L82 PathProgramCache]: Analyzing trace with hash -916604565, now seen corresponding path program 1 times [2019-11-15 21:40:01,136 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:01,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108620307] [2019-11-15 21:40:01,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:01,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:01,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:01,157 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:40:01,157 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068446839] [2019-11-15 21:40:01,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/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 [2019-11-15 21:40:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:01,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 21:40:01,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:40:01,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108620307] [2019-11-15 21:40:01,267 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:40:01,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068446839] [2019-11-15 21:40:01,267 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:40:01,268 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-15 21:40:01,268 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109240371] [2019-11-15 21:40:01,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 21:40:01,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:01,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 21:40:01,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:40:01,269 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 10 states. [2019-11-15 21:40:01,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:01,496 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-11-15 21:40:01,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 21:40:01,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-15 21:40:01,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:01,497 INFO L225 Difference]: With dead ends: 37 [2019-11-15 21:40:01,497 INFO L226 Difference]: Without dead ends: 33 [2019-11-15 21:40:01,498 INFO L600 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 [2019-11-15 21:40:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-15 21:40:01,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-11-15 21:40:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 21:40:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-15 21:40:01,505 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 17 [2019-11-15 21:40:01,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:01,505 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-15 21:40:01,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 21:40:01,506 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-15 21:40:01,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-15 21:40:01,507 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:01,507 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:01,707 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:01,708 INFO L410 AbstractCegarLoop]: === Iteration 6 === [twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:40:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:01,708 INFO L82 PathProgramCache]: Analyzing trace with hash 37921722, now seen corresponding path program 1 times [2019-11-15 21:40:01,708 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:01,708 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826473782] [2019-11-15 21:40:01,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:01,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:01,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:01,720 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:40:01,720 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998470326] [2019-11-15 21:40:01,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/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 [2019-11-15 21:40:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:01,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-15 21:40:01,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 21:40:01,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826473782] [2019-11-15 21:40:01,905 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:40:01,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998470326] [2019-11-15 21:40:01,906 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:40:01,906 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-11-15 21:40:01,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76669237] [2019-11-15 21:40:01,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 21:40:01,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:01,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 21:40:01,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-15 21:40:01,907 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 11 states. [2019-11-15 21:40:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:02,234 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-11-15 21:40:02,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 21:40:02,234 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2019-11-15 21:40:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:02,235 INFO L225 Difference]: With dead ends: 41 [2019-11-15 21:40:02,236 INFO L226 Difference]: Without dead ends: 40 [2019-11-15 21:40:02,236 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2019-11-15 21:40:02,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-15 21:40:02,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-11-15 21:40:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-15 21:40:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-11-15 21:40:02,242 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 27 [2019-11-15 21:40:02,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:02,243 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-11-15 21:40:02,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 21:40:02,243 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-11-15 21:40:02,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-15 21:40:02,244 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:02,244 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:02,445 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:02,445 INFO L410 AbstractCegarLoop]: === Iteration 7 === [twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:40:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:02,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1175573436, now seen corresponding path program 1 times [2019-11-15 21:40:02,446 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:02,446 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006966726] [2019-11-15 21:40:02,446 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:02,447 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:02,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:02,456 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:40:02,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074602200] [2019-11-15 21:40:02,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/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 [2019-11-15 21:40:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:40:02,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-15 21:40:02,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:40:02,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006966726] [2019-11-15 21:40:02,694 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:40:02,695 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074602200] [2019-11-15 21:40:02,695 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:40:02,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-11-15 21:40:02,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527338596] [2019-11-15 21:40:02,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 21:40:02,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:02,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 21:40:02,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-11-15 21:40:02,696 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 16 states. [2019-11-15 21:40:03,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:03,036 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-15 21:40:03,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 21:40:03,036 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2019-11-15 21:40:03,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:03,037 INFO L225 Difference]: With dead ends: 40 [2019-11-15 21:40:03,037 INFO L226 Difference]: Without dead ends: 36 [2019-11-15 21:40:03,038 INFO L600 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 [2019-11-15 21:40:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-15 21:40:03,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-15 21:40:03,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-15 21:40:03,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2019-11-15 21:40:03,043 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 28 [2019-11-15 21:40:03,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:03,043 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2019-11-15 21:40:03,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 21:40:03,043 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2019-11-15 21:40:03,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 21:40:03,045 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:03,045 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:03,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:03,246 INFO L410 AbstractCegarLoop]: === Iteration 8 === [twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:40:03,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:03,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1112227299, now seen corresponding path program 2 times [2019-11-15 21:40:03,246 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:03,246 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485910046] [2019-11-15 21:40:03,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:03,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:03,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:03,257 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:40:03,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252428580] [2019-11-15 21:40:03,258 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/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 [2019-11-15 21:40:03,309 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:40:03,309 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:03,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-15 21:40:03,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:03,768 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 18 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 21:40:03,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485910046] [2019-11-15 21:40:03,769 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:40:03,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252428580] [2019-11-15 21:40:03,769 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:40:03,769 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2019-11-15 21:40:03,770 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120756475] [2019-11-15 21:40:03,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-15 21:40:03,770 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:03,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-15 21:40:03,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2019-11-15 21:40:03,771 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 29 states. [2019-11-15 21:40:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:04,565 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2019-11-15 21:40:04,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-15 21:40:04,566 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 50 [2019-11-15 21:40:04,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:04,571 INFO L225 Difference]: With dead ends: 69 [2019-11-15 21:40:04,571 INFO L226 Difference]: Without dead ends: 68 [2019-11-15 21:40:04,572 INFO L600 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 [2019-11-15 21:40:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-15 21:40:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2019-11-15 21:40:04,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-15 21:40:04,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2019-11-15 21:40:04,581 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 50 [2019-11-15 21:40:04,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:04,582 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2019-11-15 21:40:04,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-15 21:40:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2019-11-15 21:40:04,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-15 21:40:04,583 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:04,584 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:04,786 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:04,787 INFO L410 AbstractCegarLoop]: === Iteration 9 === [twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:40:04,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:04,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1355949953, now seen corresponding path program 2 times [2019-11-15 21:40:04,787 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:04,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466466561] [2019-11-15 21:40:04,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:04,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:04,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:04,809 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:40:04,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171752164] [2019-11-15 21:40:04,810 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/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 [2019-11-15 21:40:04,855 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:40:04,855 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:04,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-15 21:40:04,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 21:40:05,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466466561] [2019-11-15 21:40:05,012 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:40:05,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171752164] [2019-11-15 21:40:05,012 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:40:05,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2019-11-15 21:40:05,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588061650] [2019-11-15 21:40:05,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-15 21:40:05,013 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:05,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-15 21:40:05,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2019-11-15 21:40:05,014 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 15 states. [2019-11-15 21:40:05,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:05,273 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2019-11-15 21:40:05,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 21:40:05,273 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2019-11-15 21:40:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:05,274 INFO L225 Difference]: With dead ends: 58 [2019-11-15 21:40:05,274 INFO L226 Difference]: Without dead ends: 54 [2019-11-15 21:40:05,275 INFO L600 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 [2019-11-15 21:40:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-15 21:40:05,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-15 21:40:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-15 21:40:05,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2019-11-15 21:40:05,282 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 39 [2019-11-15 21:40:05,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:05,282 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2019-11-15 21:40:05,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-15 21:40:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2019-11-15 21:40:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-15 21:40:05,284 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:40:05,284 INFO L380 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-15 21:40:05,484 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:05,485 INFO L410 AbstractCegarLoop]: === Iteration 10 === [twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:40:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:40:05,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1459996636, now seen corresponding path program 3 times [2019-11-15 21:40:05,485 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:40:05,485 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386028721] [2019-11-15 21:40:05,485 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:05,485 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:40:05,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:40:05,516 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 21:40:05,516 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102639928] [2019-11-15 21:40:05,516 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/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 [2019-11-15 21:40:07,105 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-15 21:40:07,105 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:40:07,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-15 21:40:07,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:40:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 36 proven. 24 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-11-15 21:40:07,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386028721] [2019-11-15 21:40:07,313 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 21:40:07,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102639928] [2019-11-15 21:40:07,313 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:40:07,313 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2019-11-15 21:40:07,314 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648463272] [2019-11-15 21:40:07,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-15 21:40:07,314 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:40:07,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-15 21:40:07,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-11-15 21:40:07,315 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 13 states. [2019-11-15 21:40:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:40:07,601 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2019-11-15 21:40:07,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 21:40:07,601 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2019-11-15 21:40:07,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:40:07,602 INFO L225 Difference]: With dead ends: 54 [2019-11-15 21:40:07,602 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 21:40:07,603 INFO L600 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 [2019-11-15 21:40:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 21:40:07,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 21:40:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 21:40:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 21:40:07,603 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2019-11-15 21:40:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:40:07,603 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:40:07,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-15 21:40:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 21:40:07,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 21:40:07,804 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:40:07,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 21:40:07,980 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2019-11-15 21:40:07,984 INFO L443 ceAbstractionStarter]: For program point L31(lines 31 35) no Hoare annotation was computed. [2019-11-15 21:40:07,984 INFO L439 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))) [2019-11-15 21:40:07,984 INFO L443 ceAbstractionStarter]: For program point L27(lines 27 37) no Hoare annotation was computed. [2019-11-15 21:40:07,985 INFO L443 ceAbstractionStarter]: For program point twoWayFINAL(lines 26 38) no Hoare annotation was computed. [2019-11-15 21:40:07,985 INFO L443 ceAbstractionStarter]: For program point twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2019-11-15 21:40:07,985 INFO L443 ceAbstractionStarter]: For program point twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2019-11-15 21:40:07,985 INFO L443 ceAbstractionStarter]: For program point twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-15 21:40:07,985 INFO L443 ceAbstractionStarter]: For program point L36(line 36) no Hoare annotation was computed. [2019-11-15 21:40:07,985 INFO L443 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2019-11-15 21:40:07,985 INFO L443 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2019-11-15 21:40:07,985 INFO L443 ceAbstractionStarter]: For program point L36-2(line 36) no Hoare annotation was computed. [2019-11-15 21:40:07,986 INFO L443 ceAbstractionStarter]: For program point L34-1(line 34) no Hoare annotation was computed. [2019-11-15 21:40:07,986 INFO L443 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2019-11-15 21:40:07,986 INFO L443 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-11-15 21:40:07,986 INFO L446 ceAbstractionStarter]: At program point twoWayENTRY(lines 26 38) the Hoare annotation is: true [2019-11-15 21:40:07,986 INFO L443 ceAbstractionStarter]: For program point twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-15 21:40:07,986 INFO L443 ceAbstractionStarter]: For program point twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2019-11-15 21:40:07,986 INFO L443 ceAbstractionStarter]: For program point twoWayEXIT(lines 26 38) no Hoare annotation was computed. [2019-11-15 21:40:07,986 INFO L443 ceAbstractionStarter]: For program point twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2019-11-15 21:40:07,987 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 21:40:07,987 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 21:40:07,987 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 21:40:07,987 INFO L439 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-15 21:40:07,987 INFO L443 ceAbstractionStarter]: For program point L48-1(line 48) no Hoare annotation was computed. [2019-11-15 21:40:07,987 INFO L443 ceAbstractionStarter]: For program point L45(lines 45 46) no Hoare annotation was computed. [2019-11-15 21:40:07,987 INFO L443 ceAbstractionStarter]: For program point L42(lines 42 43) no Hoare annotation was computed. [2019-11-15 21:40:07,987 INFO L439 ceAbstractionStarter]: At program point L40(lines 40 50) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-11-15 21:40:08,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:40:08 BoogieIcfgContainer [2019-11-15 21:40:08,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:40:08,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:40:08,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:40:08,003 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:40:08,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:39:59" (3/4) ... [2019-11-15 21:40:08,015 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 21:40:08,033 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure twoWay [2019-11-15 21:40:08,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-15 21:40:08,039 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 21:40:08,100 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c866a745-8425-4e49-8581-083a10e02b7e/bin/uautomizer/witness.graphml [2019-11-15 21:40:08,100 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:40:08,101 INFO L168 Benchmark]: Toolchain (without parser) took 9250.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.8 MB). Free memory was 944.7 MB in the beginning and 942.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 181.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:40:08,102 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:40:08,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:40:08,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.39 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. [2019-11-15 21:40:08,105 INFO L168 Benchmark]: Boogie Preprocessor took 13.75 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:40:08,105 INFO L168 Benchmark]: RCFGBuilder took 393.82 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:40:08,106 INFO L168 Benchmark]: TraceAbstraction took 8384.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 35.7 MB). Free memory was 1.1 GB in the beginning and 944.8 MB in the end (delta: 175.7 MB). Peak memory consumption was 211.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:40:08,106 INFO L168 Benchmark]: Witness Printer took 97.40 ms. Allocated memory is still 1.2 GB. Free memory was 944.8 MB in the beginning and 942.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:40:08,108 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 323.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.39 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 13.75 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 393.82 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8384.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 35.7 MB). Free memory was 1.1 GB in the beginning and 944.8 MB in the end (delta: 175.7 MB). Peak memory consumption was 211.3 MB. Max. memory is 11.5 GB. * Witness Printer took 97.40 ms. Allocated memory is still 1.2 GB. Free memory was 944.8 MB in the beginning and 942.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - 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 - PositiveResult [Line: 32]: 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 - 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: 8.2s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 124 SDtfs, 793 SDslu, 579 SDs, 0 SdLazy, 1326 SolverSat, 334 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 2.6s 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, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 1.4s 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...