./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/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 cf39454d83b4ec00341bd0b620b0fa6b2321ce21 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 11:40:58,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:40:58,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:40:58,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:40:58,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:40:58,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:40:58,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:40:58,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:40:58,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:40:58,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:40:58,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:40:58,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:40:58,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:40:58,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:40:58,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:40:58,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:40:58,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:40:58,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:40:58,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:40:58,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:40:58,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:40:58,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:40:58,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:40:58,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:40:58,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:40:58,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:40:58,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:40:58,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:40:58,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:40:58,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:40:58,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:40:58,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:40:58,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:40:58,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:40:58,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:40:58,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:40:58,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:40:58,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:40:58,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:40:58,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:40:58,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:40:58,246 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-12-07 11:40:58,258 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:40:58,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:40:58,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:40:58,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:40:58,260 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:40:58,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:40:58,260 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 11:40:58,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:40:58,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:40:58,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:40:58,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:40:58,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:40:58,261 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 11:40:58,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:40:58,262 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:40:58,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:40:58,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:40:58,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:40:58,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:40:58,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:40:58,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:40:58,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:40:58,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:40:58,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:40:58,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:40:58,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:40:58,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:40:58,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:40:58,264 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_958af5a8-776e-4668-9c03-978d21fc7155/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 -> cf39454d83b4ec00341bd0b620b0fa6b2321ce21 [2019-12-07 11:40:58,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:40:58,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:40:58,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:40:58,398 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:40:58,398 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:40:58,399 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2019-12-07 11:40:58,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/data/9e92c52ed/adfd3415a7c3432982a5fe993d769e8a/FLAG514fadcdf [2019-12-07 11:40:58,833 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:40:58,834 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2019-12-07 11:40:58,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/data/9e92c52ed/adfd3415a7c3432982a5fe993d769e8a/FLAG514fadcdf [2019-12-07 11:40:59,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/data/9e92c52ed/adfd3415a7c3432982a5fe993d769e8a [2019-12-07 11:40:59,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:40:59,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:40:59,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:40:59,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:40:59,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:40:59,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:40:59" (1/1) ... [2019-12-07 11:40:59,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a9a3eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59, skipping insertion in model container [2019-12-07 11:40:59,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:40:59" (1/1) ... [2019-12-07 11:40:59,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:40:59,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:40:59,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:40:59,367 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:40:59,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:40:59,423 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:40:59,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59 WrapperNode [2019-12-07 11:40:59,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:40:59,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:40:59,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:40:59,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:40:59,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59" (1/1) ... [2019-12-07 11:40:59,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59" (1/1) ... [2019-12-07 11:40:59,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:40:59,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:40:59,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:40:59,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:40:59,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59" (1/1) ... [2019-12-07 11:40:59,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59" (1/1) ... [2019-12-07 11:40:59,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59" (1/1) ... [2019-12-07 11:40:59,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59" (1/1) ... [2019-12-07 11:40:59,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59" (1/1) ... [2019-12-07 11:40:59,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59" (1/1) ... [2019-12-07 11:40:59,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59" (1/1) ... [2019-12-07 11:40:59,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:40:59,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:40:59,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:40:59,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:40:59,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/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 [2019-12-07 11:40:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 11:40:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:40:59,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:40:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 11:40:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:40:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:40:59,615 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:40:59,615 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 11:40:59,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:40:59 BoogieIcfgContainer [2019-12-07 11:40:59,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:40:59,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:40:59,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:40:59,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:40:59,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:40:59" (1/3) ... [2019-12-07 11:40:59,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbad941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:40:59, skipping insertion in model container [2019-12-07 11:40:59,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:59" (2/3) ... [2019-12-07 11:40:59,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbad941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:40:59, skipping insertion in model container [2019-12-07 11:40:59,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:40:59" (3/3) ... [2019-12-07 11:40:59,621 INFO L109 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2019-12-07 11:40:59,627 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:40:59,631 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 11:40:59,639 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 11:40:59,653 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:40:59,653 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:40:59,653 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:40:59,653 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:40:59,653 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:40:59,653 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:40:59,653 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:40:59,653 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:40:59,663 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-12-07 11:40:59,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 11:40:59,666 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:40:59,667 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 11:40:59,667 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:40:59,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:59,671 INFO L82 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2019-12-07 11:40:59,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:40:59,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735483198] [2019-12-07 11:40:59,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:40:59,782 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735483198] [2019-12-07 11:40:59,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:40:59,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:40:59,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416128678] [2019-12-07 11:40:59,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:40:59,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:40:59,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:40:59,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:40:59,797 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-12-07 11:40:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:40:59,840 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-12-07 11:40:59,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:40:59,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-07 11:40:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:40:59,847 INFO L225 Difference]: With dead ends: 34 [2019-12-07 11:40:59,847 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 11:40:59,850 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:40:59,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 11:40:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 11:40:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 11:40:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-12-07 11:40:59,877 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2019-12-07 11:40:59,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:40:59,877 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-12-07 11:40:59,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:40:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-12-07 11:40:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 11:40:59,877 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:40:59,878 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-12-07 11:40:59,878 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:40:59,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:59,878 INFO L82 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2019-12-07 11:40:59,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:40:59,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612504363] [2019-12-07 11:40:59,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 11:40:59,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612504363] [2019-12-07 11:40:59,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:40:59,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:40:59,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663864572] [2019-12-07 11:40:59,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:40:59,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:40:59,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:40:59,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:40:59,911 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2019-12-07 11:40:59,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:40:59,931 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-12-07 11:40:59,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:40:59,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 11:40:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:40:59,932 INFO L225 Difference]: With dead ends: 18 [2019-12-07 11:40:59,932 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 11:40:59,933 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:40:59,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 11:40:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 11:40:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 11:40:59,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-12-07 11:40:59,935 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2019-12-07 11:40:59,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:40:59,935 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-12-07 11:40:59,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:40:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-12-07 11:40:59,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 11:40:59,936 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:40:59,936 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:40:59,936 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:40:59,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:59,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1607296535, now seen corresponding path program 1 times [2019-12-07 11:40:59,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:40:59,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025370135] [2019-12-07 11:40:59,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:40:59,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025370135] [2019-12-07 11:40:59,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600787434] [2019-12-07 11:40:59,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/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 [2019-12-07 11:40:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:59,995 INFO L264 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:40:59,999 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:00,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:00,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-12-07 11:41:00,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202630226] [2019-12-07 11:41:00,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 11:41:00,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:00,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 11:41:00,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:41:00,026 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2019-12-07 11:41:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:00,061 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2019-12-07 11:41:00,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 11:41:00,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-12-07 11:41:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:00,062 INFO L225 Difference]: With dead ends: 28 [2019-12-07 11:41:00,062 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 11:41:00,062 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:41:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 11:41:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-12-07 11:41:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 11:41:00,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-12-07 11:41:00,065 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2019-12-07 11:41:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:00,066 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-12-07 11:41:00,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 11:41:00,066 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-12-07 11:41:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 11:41:00,066 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:00,066 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-12-07 11:41:00,267 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:00,267 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2019-12-07 11:41:00,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:00,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054438883] [2019-12-07 11:41:00,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:00,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054438883] [2019-12-07 11:41:00,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86105666] [2019-12-07 11:41:00,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/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 [2019-12-07 11:41:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:00,417 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 11:41:00,419 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:00,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:41:00,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2019-12-07 11:41:00,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903942222] [2019-12-07 11:41:00,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 11:41:00,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:00,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 11:41:00,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-07 11:41:00,453 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-12-07 11:41:00,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:00,498 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-12-07 11:41:00,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 11:41:00,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 11:41:00,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:00,498 INFO L225 Difference]: With dead ends: 18 [2019-12-07 11:41:00,499 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 11:41:00,499 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-12-07 11:41:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 11:41:00,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 11:41:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 11:41:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-12-07 11:41:00,501 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2019-12-07 11:41:00,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:00,501 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-12-07 11:41:00,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 11:41:00,502 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-12-07 11:41:00,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 11:41:00,502 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:00,502 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:00,702 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:00,703 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:00,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1053474021, now seen corresponding path program 2 times [2019-12-07 11:41:00,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:00,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857598812] [2019-12-07 11:41:00,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:00,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857598812] [2019-12-07 11:41:00,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074627493] [2019-12-07 11:41:00,794 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/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 [2019-12-07 11:41:00,850 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 11:41:00,850 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:00,851 INFO L264 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:41:00,853 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:00,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:00,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-12-07 11:41:00,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472345996] [2019-12-07 11:41:00,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 11:41:00,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:00,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 11:41:00,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:41:00,887 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2019-12-07 11:41:00,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:00,939 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-12-07 11:41:00,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 11:41:00,939 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-12-07 11:41:00,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:00,939 INFO L225 Difference]: With dead ends: 30 [2019-12-07 11:41:00,940 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 11:41:00,940 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-12-07 11:41:00,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 11:41:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-12-07 11:41:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 11:41:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-12-07 11:41:00,943 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2019-12-07 11:41:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:00,943 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-12-07 11:41:00,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 11:41:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-12-07 11:41:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 11:41:00,944 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:00,944 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:01,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:01,145 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:01,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:01,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1100938783, now seen corresponding path program 3 times [2019-12-07 11:41:01,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:01,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530136926] [2019-12-07 11:41:01,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:01,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530136926] [2019-12-07 11:41:01,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103333909] [2019-12-07 11:41:01,196 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/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 [2019-12-07 11:41:01,217 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 11:41:01,218 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:01,218 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 11:41:01,219 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:01,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:01,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-12-07 11:41:01,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382498] [2019-12-07 11:41:01,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 11:41:01,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 11:41:01,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-12-07 11:41:01,235 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2019-12-07 11:41:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:01,278 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-12-07 11:41:01,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 11:41:01,278 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2019-12-07 11:41:01,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:01,279 INFO L225 Difference]: With dead ends: 34 [2019-12-07 11:41:01,279 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 11:41:01,279 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2019-12-07 11:41:01,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 11:41:01,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2019-12-07 11:41:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 11:41:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-12-07 11:41:01,282 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2019-12-07 11:41:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:01,283 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-12-07 11:41:01,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 11:41:01,283 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-12-07 11:41:01,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 11:41:01,283 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:01,283 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:01,484 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:01,485 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:01,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:01,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1326737629, now seen corresponding path program 4 times [2019-12-07 11:41:01,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:01,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496257128] [2019-12-07 11:41:01,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:01,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496257128] [2019-12-07 11:41:01,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948875401] [2019-12-07 11:41:01,568 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/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 [2019-12-07 11:41:01,591 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 11:41:01,591 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:01,592 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 11:41:01,593 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:01,610 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:01,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:01,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-12-07 11:41:01,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578123452] [2019-12-07 11:41:01,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 11:41:01,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:01,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 11:41:01,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-12-07 11:41:01,612 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 13 states. [2019-12-07 11:41:01,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:01,677 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2019-12-07 11:41:01,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 11:41:01,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2019-12-07 11:41:01,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:01,678 INFO L225 Difference]: With dead ends: 38 [2019-12-07 11:41:01,678 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 11:41:01,678 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2019-12-07 11:41:01,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 11:41:01,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-12-07 11:41:01,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 11:41:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-12-07 11:41:01,681 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2019-12-07 11:41:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:01,681 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-12-07 11:41:01,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 11:41:01,682 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-12-07 11:41:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 11:41:01,682 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:01,682 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:01,883 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:01,884 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:01,884 INFO L82 PathProgramCache]: Analyzing trace with hash 108793383, now seen corresponding path program 5 times [2019-12-07 11:41:01,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:01,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486141412] [2019-12-07 11:41:01,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:01,989 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486141412] [2019-12-07 11:41:01,990 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517635660] [2019-12-07 11:41:01,990 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/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 [2019-12-07 11:41:02,016 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-07 11:41:02,016 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:02,017 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 11:41:02,018 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:02,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:02,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-12-07 11:41:02,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671336038] [2019-12-07 11:41:02,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-07 11:41:02,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:02,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 11:41:02,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-12-07 11:41:02,037 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 15 states. [2019-12-07 11:41:02,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:02,104 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2019-12-07 11:41:02,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 11:41:02,105 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 26 [2019-12-07 11:41:02,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:02,106 INFO L225 Difference]: With dead ends: 42 [2019-12-07 11:41:02,106 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 11:41:02,107 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2019-12-07 11:41:02,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 11:41:02,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2019-12-07 11:41:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 11:41:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2019-12-07 11:41:02,111 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2019-12-07 11:41:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:02,111 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2019-12-07 11:41:02,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-07 11:41:02,112 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2019-12-07 11:41:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 11:41:02,112 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:02,113 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:02,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:02,314 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:02,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:02,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1590598869, now seen corresponding path program 6 times [2019-12-07 11:41:02,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:02,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231285348] [2019-12-07 11:41:02,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:02,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231285348] [2019-12-07 11:41:02,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3755706] [2019-12-07 11:41:02,415 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/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 [2019-12-07 11:41:02,442 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-12-07 11:41:02,442 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:02,443 INFO L264 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 11:41:02,444 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:02,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:02,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-12-07 11:41:02,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177697568] [2019-12-07 11:41:02,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-07 11:41:02,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:02,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-07 11:41:02,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-12-07 11:41:02,462 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 17 states. [2019-12-07 11:41:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:02,538 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2019-12-07 11:41:02,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 11:41:02,538 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2019-12-07 11:41:02,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:02,539 INFO L225 Difference]: With dead ends: 46 [2019-12-07 11:41:02,539 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 11:41:02,539 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2019-12-07 11:41:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 11:41:02,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-12-07 11:41:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 11:41:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2019-12-07 11:41:02,542 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2019-12-07 11:41:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:02,542 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2019-12-07 11:41:02,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-07 11:41:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2019-12-07 11:41:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-12-07 11:41:02,543 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:02,543 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:02,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:02,744 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:02,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:02,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2022926801, now seen corresponding path program 7 times [2019-12-07 11:41:02,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:02,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390770633] [2019-12-07 11:41:02,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:02,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390770633] [2019-12-07 11:41:02,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677605907] [2019-12-07 11:41:02,871 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:02,893 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 11:41:02,895 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:02,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:02,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-12-07 11:41:02,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709083323] [2019-12-07 11:41:02,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-07 11:41:02,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:02,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-07 11:41:02,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-12-07 11:41:02,914 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 19 states. [2019-12-07 11:41:02,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:02,999 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2019-12-07 11:41:02,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-07 11:41:02,999 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2019-12-07 11:41:03,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:03,000 INFO L225 Difference]: With dead ends: 50 [2019-12-07 11:41:03,000 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 11:41:03,001 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2019-12-07 11:41:03,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 11:41:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2019-12-07 11:41:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-12-07 11:41:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2019-12-07 11:41:03,004 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 34 [2019-12-07 11:41:03,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:03,004 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2019-12-07 11:41:03,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-07 11:41:03,005 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2019-12-07 11:41:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-07 11:41:03,005 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:03,005 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:03,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:03,207 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:03,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:03,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1492211917, now seen corresponding path program 8 times [2019-12-07 11:41:03,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:03,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816142457] [2019-12-07 11:41:03,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:03,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816142457] [2019-12-07 11:41:03,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716168212] [2019-12-07 11:41:03,356 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:03,379 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 11:41:03,379 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:03,379 INFO L264 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 11:41:03,381 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:03,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:03,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-12-07 11:41:03,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973083370] [2019-12-07 11:41:03,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-12-07 11:41:03,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:03,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-07 11:41:03,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-12-07 11:41:03,400 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 21 states. [2019-12-07 11:41:03,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:03,507 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2019-12-07 11:41:03,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-07 11:41:03,507 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2019-12-07 11:41:03,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:03,508 INFO L225 Difference]: With dead ends: 54 [2019-12-07 11:41:03,508 INFO L226 Difference]: Without dead ends: 48 [2019-12-07 11:41:03,509 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2019-12-07 11:41:03,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-12-07 11:41:03,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2019-12-07 11:41:03,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 11:41:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2019-12-07 11:41:03,513 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 38 [2019-12-07 11:41:03,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:03,513 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2019-12-07 11:41:03,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-12-07 11:41:03,513 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2019-12-07 11:41:03,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-12-07 11:41:03,514 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:03,515 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:03,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:03,716 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:03,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:03,717 INFO L82 PathProgramCache]: Analyzing trace with hash 360224311, now seen corresponding path program 9 times [2019-12-07 11:41:03,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:03,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494172065] [2019-12-07 11:41:03,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:03,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494172065] [2019-12-07 11:41:03,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815018318] [2019-12-07 11:41:03,894 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:03,942 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-12-07 11:41:03,942 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:03,943 INFO L264 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 11:41:03,945 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:03,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:03,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-12-07 11:41:03,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329126087] [2019-12-07 11:41:03,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-12-07 11:41:03,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:03,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-12-07 11:41:03,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-12-07 11:41:03,967 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 23 states. [2019-12-07 11:41:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:04,082 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2019-12-07 11:41:04,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-07 11:41:04,082 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2019-12-07 11:41:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:04,083 INFO L225 Difference]: With dead ends: 58 [2019-12-07 11:41:04,083 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 11:41:04,083 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2019-12-07 11:41:04,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 11:41:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2019-12-07 11:41:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-12-07 11:41:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2019-12-07 11:41:04,088 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 42 [2019-12-07 11:41:04,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:04,088 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2019-12-07 11:41:04,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-12-07 11:41:04,088 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2019-12-07 11:41:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-07 11:41:04,089 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:04,089 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:04,289 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:04,290 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:04,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:04,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1334534971, now seen corresponding path program 10 times [2019-12-07 11:41:04,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:04,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237468384] [2019-12-07 11:41:04,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:04,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237468384] [2019-12-07 11:41:04,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437751072] [2019-12-07 11:41:04,469 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:04,496 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 11:41:04,496 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:04,497 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 11:41:04,498 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:04,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:04,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-12-07 11:41:04,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210318342] [2019-12-07 11:41:04,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-12-07 11:41:04,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:04,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-12-07 11:41:04,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-12-07 11:41:04,520 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 25 states. [2019-12-07 11:41:04,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:04,658 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2019-12-07 11:41:04,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-12-07 11:41:04,658 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2019-12-07 11:41:04,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:04,659 INFO L225 Difference]: With dead ends: 62 [2019-12-07 11:41:04,659 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 11:41:04,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2019-12-07 11:41:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 11:41:04,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-12-07 11:41:04,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-12-07 11:41:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2019-12-07 11:41:04,664 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2019-12-07 11:41:04,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:04,665 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2019-12-07 11:41:04,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-12-07 11:41:04,665 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2019-12-07 11:41:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 11:41:04,666 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:04,666 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:04,866 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:04,867 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:04,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash 2041056831, now seen corresponding path program 11 times [2019-12-07 11:41:04,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:04,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560264968] [2019-12-07 11:41:04,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:05,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560264968] [2019-12-07 11:41:05,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727437459] [2019-12-07 11:41:05,099 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:05,155 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-07 11:41:05,155 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:05,156 INFO L264 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 11:41:05,158 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:05,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:05,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-12-07 11:41:05,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475261823] [2019-12-07 11:41:05,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-12-07 11:41:05,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:05,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-12-07 11:41:05,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-12-07 11:41:05,184 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 27 states. [2019-12-07 11:41:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:05,328 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2019-12-07 11:41:05,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-12-07 11:41:05,328 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2019-12-07 11:41:05,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:05,328 INFO L225 Difference]: With dead ends: 66 [2019-12-07 11:41:05,328 INFO L226 Difference]: Without dead ends: 60 [2019-12-07 11:41:05,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=417, Invalid=989, Unknown=0, NotChecked=0, Total=1406 [2019-12-07 11:41:05,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-12-07 11:41:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2019-12-07 11:41:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-12-07 11:41:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2019-12-07 11:41:05,332 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2019-12-07 11:41:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:05,332 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2019-12-07 11:41:05,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-12-07 11:41:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2019-12-07 11:41:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-12-07 11:41:05,333 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:05,333 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:05,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:05,535 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:05,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:05,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1615882429, now seen corresponding path program 12 times [2019-12-07 11:41:05,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:05,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533623159] [2019-12-07 11:41:05,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:05,752 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533623159] [2019-12-07 11:41:05,752 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298201508] [2019-12-07 11:41:05,752 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:05,866 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-12-07 11:41:05,866 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:05,868 INFO L264 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2019-12-07 11:41:05,869 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:05,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:05,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-12-07 11:41:05,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74456541] [2019-12-07 11:41:05,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-12-07 11:41:05,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:05,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-12-07 11:41:05,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-12-07 11:41:05,902 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 29 states. [2019-12-07 11:41:06,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:06,069 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2019-12-07 11:41:06,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-12-07 11:41:06,069 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2019-12-07 11:41:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:06,069 INFO L225 Difference]: With dead ends: 70 [2019-12-07 11:41:06,069 INFO L226 Difference]: Without dead ends: 64 [2019-12-07 11:41:06,070 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2019-12-07 11:41:06,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-07 11:41:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2019-12-07 11:41:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-12-07 11:41:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2019-12-07 11:41:06,073 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 54 [2019-12-07 11:41:06,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:06,073 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2019-12-07 11:41:06,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-12-07 11:41:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2019-12-07 11:41:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-12-07 11:41:06,074 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:06,074 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:06,274 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:06,275 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:06,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:06,276 INFO L82 PathProgramCache]: Analyzing trace with hash -184353209, now seen corresponding path program 13 times [2019-12-07 11:41:06,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:06,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368262267] [2019-12-07 11:41:06,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:06,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368262267] [2019-12-07 11:41:06,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864111530] [2019-12-07 11:41:06,533 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:06,562 INFO L264 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2019-12-07 11:41:06,564 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:06,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:06,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-12-07 11:41:06,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404238017] [2019-12-07 11:41:06,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-12-07 11:41:06,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:06,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-12-07 11:41:06,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-12-07 11:41:06,597 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 31 states. [2019-12-07 11:41:06,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:06,781 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2019-12-07 11:41:06,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-12-07 11:41:06,781 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 58 [2019-12-07 11:41:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:06,781 INFO L225 Difference]: With dead ends: 74 [2019-12-07 11:41:06,781 INFO L226 Difference]: Without dead ends: 68 [2019-12-07 11:41:06,782 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2019-12-07 11:41:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-12-07 11:41:06,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2019-12-07 11:41:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-07 11:41:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2019-12-07 11:41:06,785 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 58 [2019-12-07 11:41:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:06,785 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2019-12-07 11:41:06,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-12-07 11:41:06,785 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2019-12-07 11:41:06,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-12-07 11:41:06,786 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:06,786 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:06,986 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:06,986 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:06,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:06,987 INFO L82 PathProgramCache]: Analyzing trace with hash 344146763, now seen corresponding path program 14 times [2019-12-07 11:41:06,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:06,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526164895] [2019-12-07 11:41:06,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:07,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526164895] [2019-12-07 11:41:07,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026365377] [2019-12-07 11:41:07,341 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:07,369 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 11:41:07,369 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:07,370 INFO L264 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2019-12-07 11:41:07,372 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:07,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:07,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-12-07 11:41:07,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637538230] [2019-12-07 11:41:07,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-12-07 11:41:07,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:07,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-12-07 11:41:07,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-12-07 11:41:07,397 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 33 states. [2019-12-07 11:41:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:07,620 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2019-12-07 11:41:07,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-12-07 11:41:07,620 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 62 [2019-12-07 11:41:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:07,621 INFO L225 Difference]: With dead ends: 78 [2019-12-07 11:41:07,621 INFO L226 Difference]: Without dead ends: 72 [2019-12-07 11:41:07,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=633, Invalid=1529, Unknown=0, NotChecked=0, Total=2162 [2019-12-07 11:41:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-12-07 11:41:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2019-12-07 11:41:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-12-07 11:41:07,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2019-12-07 11:41:07,625 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 62 [2019-12-07 11:41:07,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:07,626 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2019-12-07 11:41:07,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-12-07 11:41:07,626 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2019-12-07 11:41:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-12-07 11:41:07,627 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:07,627 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:07,827 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:07,828 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:07,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:07,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1083270735, now seen corresponding path program 15 times [2019-12-07 11:41:07,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:07,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163134506] [2019-12-07 11:41:07,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:08,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163134506] [2019-12-07 11:41:08,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073820438] [2019-12-07 11:41:08,142 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:08,358 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-12-07 11:41:08,358 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:08,359 INFO L264 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 32 conjunts are in the unsatisfiable core [2019-12-07 11:41:08,360 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:08,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:08,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-12-07 11:41:08,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059312735] [2019-12-07 11:41:08,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-12-07 11:41:08,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:08,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-12-07 11:41:08,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-12-07 11:41:08,388 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 35 states. [2019-12-07 11:41:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:08,608 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2019-12-07 11:41:08,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-12-07 11:41:08,609 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 66 [2019-12-07 11:41:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:08,609 INFO L225 Difference]: With dead ends: 82 [2019-12-07 11:41:08,609 INFO L226 Difference]: Without dead ends: 76 [2019-12-07 11:41:08,610 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=715, Invalid=1735, Unknown=0, NotChecked=0, Total=2450 [2019-12-07 11:41:08,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-12-07 11:41:08,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2019-12-07 11:41:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-12-07 11:41:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2019-12-07 11:41:08,614 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 66 [2019-12-07 11:41:08,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:08,614 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2019-12-07 11:41:08,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-12-07 11:41:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2019-12-07 11:41:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-12-07 11:41:08,615 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:08,615 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:08,815 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:08,815 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:08,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1559337133, now seen corresponding path program 16 times [2019-12-07 11:41:08,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:08,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030441050] [2019-12-07 11:41:08,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:09,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030441050] [2019-12-07 11:41:09,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008276234] [2019-12-07 11:41:09,142 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:09,175 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 11:41:09,175 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:09,176 INFO L264 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjunts are in the unsatisfiable core [2019-12-07 11:41:09,178 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:09,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:09,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-12-07 11:41:09,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373263139] [2019-12-07 11:41:09,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-12-07 11:41:09,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:09,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-12-07 11:41:09,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-12-07 11:41:09,215 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 37 states. [2019-12-07 11:41:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:09,467 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2019-12-07 11:41:09,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-12-07 11:41:09,467 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 70 [2019-12-07 11:41:09,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:09,468 INFO L225 Difference]: With dead ends: 86 [2019-12-07 11:41:09,468 INFO L226 Difference]: Without dead ends: 80 [2019-12-07 11:41:09,469 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2019-12-07 11:41:09,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-12-07 11:41:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2019-12-07 11:41:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-12-07 11:41:09,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2019-12-07 11:41:09,471 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 70 [2019-12-07 11:41:09,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:09,471 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2019-12-07 11:41:09,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-12-07 11:41:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2019-12-07 11:41:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-12-07 11:41:09,472 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:09,472 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:09,672 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:09,673 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:09,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:09,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1923398057, now seen corresponding path program 17 times [2019-12-07 11:41:09,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:09,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085007489] [2019-12-07 11:41:09,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:10,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085007489] [2019-12-07 11:41:10,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76709308] [2019-12-07 11:41:10,034 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:10,155 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-12-07 11:41:10,155 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:10,157 INFO L264 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjunts are in the unsatisfiable core [2019-12-07 11:41:10,158 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:10,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:10,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-12-07 11:41:10,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809602156] [2019-12-07 11:41:10,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-12-07 11:41:10,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:10,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-12-07 11:41:10,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-12-07 11:41:10,186 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 39 states. [2019-12-07 11:41:10,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:10,441 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2019-12-07 11:41:10,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-12-07 11:41:10,442 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 74 [2019-12-07 11:41:10,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:10,442 INFO L225 Difference]: With dead ends: 90 [2019-12-07 11:41:10,442 INFO L226 Difference]: Without dead ends: 84 [2019-12-07 11:41:10,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=894, Invalid=2186, Unknown=0, NotChecked=0, Total=3080 [2019-12-07 11:41:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-12-07 11:41:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2019-12-07 11:41:10,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-12-07 11:41:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2019-12-07 11:41:10,446 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2019-12-07 11:41:10,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:10,447 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2019-12-07 11:41:10,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-12-07 11:41:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2019-12-07 11:41:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-12-07 11:41:10,448 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:10,448 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:10,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:10,648 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:10,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:10,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1202125989, now seen corresponding path program 18 times [2019-12-07 11:41:10,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:10,649 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149015955] [2019-12-07 11:41:10,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:11,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149015955] [2019-12-07 11:41:11,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962572139] [2019-12-07 11:41:11,033 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:11,399 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2019-12-07 11:41:11,400 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:41:11,402 INFO L264 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 63 conjunts are in the unsatisfiable core [2019-12-07 11:41:11,403 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:11,514 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-12-07 11:41:11,514 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,521 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:11,521 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,521 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2019-12-07 11:41:11,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 11:41:11,596 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-12-07 11:41:11,596 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,604 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:11,604 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,604 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-12-07 11:41:11,660 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 11:41:11,661 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-12-07 11:41:11,661 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,666 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:11,666 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,667 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-12-07 11:41:11,729 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 11:41:11,729 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-12-07 11:41:11,729 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,736 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:11,736 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,736 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-12-07 11:41:11,796 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 11:41:11,796 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-12-07 11:41:11,796 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,802 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:11,802 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,802 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-12-07 11:41:11,867 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 11:41:11,868 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-12-07 11:41:11,868 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,873 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:11,873 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,873 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-12-07 11:41:11,947 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 11:41:11,948 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-12-07 11:41:11,948 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,953 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:11,953 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 11:41:11,953 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-12-07 11:41:12,022 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 11:41:12,023 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-12-07 11:41:12,023 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,028 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:12,028 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,028 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-12-07 11:41:12,096 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 11:41:12,096 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-12-07 11:41:12,097 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,101 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:12,101 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,102 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:13 [2019-12-07 11:41:12,143 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:12,143 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2019-12-07 11:41:12,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,146 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,160 INFO L614 ElimStorePlain]: treesize reduction 20, result has 63.0 percent of original size [2019-12-07 11:41:12,161 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,161 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:23 [2019-12-07 11:41:12,189 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,219 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,261 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:12,261 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2019-12-07 11:41:12,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,262 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,266 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-12-07 11:41:12,266 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,290 INFO L614 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-12-07 11:41:12,290 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-12-07 11:41:12,291 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-12-07 11:41:12,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,376 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-12-07 11:41:12,376 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,391 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:12,392 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2019-12-07 11:41:12,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,392 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,416 INFO L614 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-12-07 11:41:12,416 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-12-07 11:41:12,416 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-12-07 11:41:12,442 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,469 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,499 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,513 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:12,513 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2019-12-07 11:41:12,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,514 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,517 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-12-07 11:41:12,518 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,541 INFO L614 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-12-07 11:41:12,542 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-12-07 11:41:12,542 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-12-07 11:41:12,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,599 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,636 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-12-07 11:41:12,636 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,649 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:12,649 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2019-12-07 11:41:12,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,650 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,676 INFO L614 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-12-07 11:41:12,676 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-12-07 11:41:12,676 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-12-07 11:41:12,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,783 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,788 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-12-07 11:41:12,788 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,799 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:12,799 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2019-12-07 11:41:12,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,800 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,822 INFO L614 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-12-07 11:41:12,823 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-12-07 11:41:12,823 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-12-07 11:41:12,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:41:12,921 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-12-07 11:41:12,922 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,923 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 11:41:12,923 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 11:41:12,923 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-12-07 11:41:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 105 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:12,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:41:12,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 78 [2019-12-07 11:41:12,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254531378] [2019-12-07 11:41:12,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 78 states [2019-12-07 11:41:12,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:12,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2019-12-07 11:41:12,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1001, Invalid=5005, Unknown=0, NotChecked=0, Total=6006 [2019-12-07 11:41:12,973 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 78 states. [2019-12-07 11:41:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:14,313 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2019-12-07 11:41:14,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-12-07 11:41:14,313 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2019-12-07 11:41:14,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:14,313 INFO L225 Difference]: With dead ends: 93 [2019-12-07 11:41:14,313 INFO L226 Difference]: Without dead ends: 87 [2019-12-07 11:41:14,317 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4106 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2476, Invalid=10406, Unknown=0, NotChecked=0, Total=12882 [2019-12-07 11:41:14,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-12-07 11:41:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2019-12-07 11:41:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-12-07 11:41:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2019-12-07 11:41:14,319 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 78 [2019-12-07 11:41:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:14,319 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2019-12-07 11:41:14,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 78 states. [2019-12-07 11:41:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2019-12-07 11:41:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-12-07 11:41:14,319 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:14,320 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:14,520 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:14,520 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:14,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:14,521 INFO L82 PathProgramCache]: Analyzing trace with hash 145436095, now seen corresponding path program 1 times [2019-12-07 11:41:14,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:41:14,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559586373] [2019-12-07 11:41:14,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2019-12-07 11:41:14,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559586373] [2019-12-07 11:41:14,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:41:14,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:41:14,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464826840] [2019-12-07 11:41:14,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:41:14,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:41:14,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:41:14,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:41:14,554 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 4 states. [2019-12-07 11:41:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:14,562 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2019-12-07 11:41:14,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:41:14,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2019-12-07 11:41:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:14,562 INFO L225 Difference]: With dead ends: 84 [2019-12-07 11:41:14,563 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 11:41:14,563 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:41:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 11:41:14,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 11:41:14,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 11:41:14,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 11:41:14,563 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2019-12-07 11:41:14,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:14,564 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:41:14,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:41:14,564 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 11:41:14,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 11:41:14,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 11:41:14,656 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-12-07 11:41:14,656 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 11:41:14,656 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-12-07 11:41:14,656 INFO L246 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-12-07 11:41:14,656 INFO L246 CegarLoopResult]: For program point L17-2(lines 10 21) no Hoare annotation was computed. [2019-12-07 11:41:14,656 INFO L246 CegarLoopResult]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2019-12-07 11:41:14,656 INFO L246 CegarLoopResult]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2019-12-07 11:41:14,656 INFO L246 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2019-12-07 11:41:14,656 INFO L246 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2019-12-07 11:41:14,657 INFO L242 CegarLoopResult]: At program point L13-5(lines 13 15) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#a~0.offset| 0))) (or (and .cse0 (= ULTIMATE.start_main_~i~0 3)) (and .cse0 (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|) (+ |ULTIMATE.start_main_~#a~0.offset| 12)) 2147483647) (<= 4 ULTIMATE.start_main_~i~0)) (and .cse0 (= ULTIMATE.start_main_~i~0 0)) (and .cse0 (= ULTIMATE.start_main_~i~0 1)) (and .cse0 (= ULTIMATE.start_main_~i~0 2)))) [2019-12-07 11:41:14,657 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 11:41:14,657 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-12-07 11:41:14,657 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-12-07 11:41:14,657 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 11:41:14,657 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 11:41:14,657 INFO L249 CegarLoopResult]: At program point L20(lines 10 21) the Hoare annotation is: true [2019-12-07 11:41:14,657 INFO L246 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2019-12-07 11:41:14,657 INFO L246 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-12-07 11:41:14,663 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 11:41:14,667 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 11:41:14,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:41:14 BoogieIcfgContainer [2019-12-07 11:41:14,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:41:14,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:41:14,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:41:14,669 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:41:14,669 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:40:59" (3/4) ... [2019-12-07 11:41:14,672 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 11:41:14,678 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 11:41:14,678 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 11:41:14,679 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 11:41:14,703 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_958af5a8-776e-4668-9c03-978d21fc7155/bin/uautomizer/witness.graphml [2019-12-07 11:41:14,703 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:41:14,704 INFO L168 Benchmark]: Toolchain (without parser) took 15470.53 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 229.1 MB). Free memory was 942.5 MB in the beginning and 1.2 GB in the end (delta: -243.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:41:14,704 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:41:14,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -142.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:14,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:41:14,705 INFO L168 Benchmark]: Boogie Preprocessor took 17.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:14,705 INFO L168 Benchmark]: RCFGBuilder took 152.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:14,705 INFO L168 Benchmark]: TraceAbstraction took 15051.75 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 141.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -124.2 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:14,705 INFO L168 Benchmark]: Witness Printer took 34.28 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:14,707 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 187.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -142.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 152.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15051.75 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 141.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -124.2 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * Witness Printer took 34.28 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2019-12-07 11:41:14,710 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 11:41:14,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((a == 0 && i == 3) || ((a == 0 && unknown-#memory_int-unknown[a][a + 12] <= 2147483647) && 4 <= i)) || (a == 0 && i == 0)) || (a == 0 && i == 1)) || (a == 0 && i == 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Result: SAFE, OverallTime: 14.9s, OverallIterations: 22, TraceHistogramMax: 19, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 196 SDtfs, 727 SDslu, 2464 SDs, 0 SdLazy, 3478 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1388 GetRequests, 744 SyntacticMatches, 5 SemanticMatches, 639 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7631 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=21, 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, 22 MinimizatonAttempts, 55 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 22 NumberOfFragments, 46 HoareAnnotationTreeSize, 2 FomulaSimplifications, 176 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 181 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 1701 NumberOfCodeBlocks, 1697 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 1660 ConstructedInterpolants, 0 QuantifiedInterpolants, 309412 SizeOfPredicates, 194 NumberOfNonLiveVariables, 2186 ConjunctsInSsa, 408 ConjunctsInUnsatCore, 41 InterpolantComputations, 4 PerfectInterpolantSequences, 815/8808 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...