./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c -s /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/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 9072a9376e1e28de1ef4dc11b7134f6f175023b7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:58:21,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:21,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:21,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:21,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:21,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:21,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:21,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:21,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:21,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:21,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:21,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:21,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:21,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:21,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:21,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:21,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:21,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:21,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:21,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:21,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:21,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:21,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:21,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:21,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:21,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:21,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:21,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:21,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:21,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:21,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:21,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:21,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:21,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:21,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:21,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:21,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:21,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:21,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:21,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:21,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:21,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 08:58:21,195 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:21,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:21,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:21,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:21,200 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:21,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:21,200 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:21,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:21,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:21,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:58:21,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:58:21,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:58:21,201 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 08:58:21,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:21,201 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:21,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:58:21,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:21,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:21,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:58:21,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:58:21,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:58:21,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:21,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:58:21,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:58:21,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:21,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:58:21,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:58:21,203 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/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/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 -> 9072a9376e1e28de1ef4dc11b7134f6f175023b7 [2019-10-22 08:58:21,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:21,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:21,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:21,250 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:21,250 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:21,251 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2019-10-22 08:58:21,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/bin/uautomizer/data/6c264defa/d8d4833087974df09d875e3d35c87f01/FLAG8cd2144ef [2019-10-22 08:58:21,683 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:21,683 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2019-10-22 08:58:21,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/bin/uautomizer/data/6c264defa/d8d4833087974df09d875e3d35c87f01/FLAG8cd2144ef [2019-10-22 08:58:21,700 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/bin/uautomizer/data/6c264defa/d8d4833087974df09d875e3d35c87f01 [2019-10-22 08:58:21,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:21,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:21,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:21,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:21,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:21,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:21" (1/1) ... [2019-10-22 08:58:21,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216d7e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:21, skipping insertion in model container [2019-10-22 08:58:21,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:21" (1/1) ... [2019-10-22 08:58:21,718 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:21,732 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:21,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:21,902 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:22,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:22,013 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:22,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22 WrapperNode [2019-10-22 08:58:22,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:22,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:22,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:22,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:22,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:22,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:22,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:22,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:22,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... [2019-10-22 08:58:22,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:22,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:22,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:22,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:22,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/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 [2019-10-22 08:58:22,113 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-10-22 08:58:22,113 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-10-22 08:58:22,113 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-10-22 08:58:22,113 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-10-22 08:58:22,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:22,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:22,279 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:22,279 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 08:58:22,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:22 BoogieIcfgContainer [2019-10-22 08:58:22,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:22,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:58:22,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:58:22,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:58:22,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:58:21" (1/3) ... [2019-10-22 08:58:22,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48546819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:22, skipping insertion in model container [2019-10-22 08:58:22,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:22" (2/3) ... [2019-10-22 08:58:22,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48546819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:22, skipping insertion in model container [2019-10-22 08:58:22,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:22" (3/3) ... [2019-10-22 08:58:22,287 INFO L109 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1b.c [2019-10-22 08:58:22,294 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:58:22,299 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-10-22 08:58:22,309 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-10-22 08:58:22,331 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:58:22,331 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:58:22,331 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:58:22,331 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:22,331 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:22,331 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:58:22,332 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:22,332 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:58:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-10-22 08:58:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 08:58:22,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:22,354 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 08:58:22,355 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:22,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:22,361 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2019-10-22 08:58:22,368 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:22,369 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357562186] [2019-10-22 08:58:22,369 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,369 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:22,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357562186] [2019-10-22 08:58:22,512 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:22,512 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:58:22,513 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098979724] [2019-10-22 08:58:22,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:22,517 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:22,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:22,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:22,531 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2019-10-22 08:58:22,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:22,711 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2019-10-22 08:58:22,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:58:22,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-10-22 08:58:22,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:22,722 INFO L225 Difference]: With dead ends: 64 [2019-10-22 08:58:22,722 INFO L226 Difference]: Without dead ends: 56 [2019-10-22 08:58:22,725 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:58:22,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-22 08:58:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2019-10-22 08:58:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 08:58:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2019-10-22 08:58:22,768 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2019-10-22 08:58:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:22,768 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2019-10-22 08:58:22,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2019-10-22 08:58:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:58:22,769 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:22,769 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:58:22,770 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:22,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:22,770 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2019-10-22 08:58:22,770 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:22,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905100851] [2019-10-22 08:58:22,771 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,771 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:22,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905100851] [2019-10-22 08:58:22,785 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:22,785 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:58:22,785 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492114810] [2019-10-22 08:58:22,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:58:22,787 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:22,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:58:22,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:58:22,787 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2019-10-22 08:58:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:22,806 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2019-10-22 08:58:22,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:58:22,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 08:58:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:22,808 INFO L225 Difference]: With dead ends: 52 [2019-10-22 08:58:22,808 INFO L226 Difference]: Without dead ends: 50 [2019-10-22 08:58:22,808 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:58:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-22 08:58:22,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-10-22 08:58:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-22 08:58:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2019-10-22 08:58:22,817 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2019-10-22 08:58:22,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:22,817 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2019-10-22 08:58:22,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:58:22,817 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2019-10-22 08:58:22,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:58:22,821 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:22,821 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:22,821 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:22,822 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2019-10-22 08:58:22,822 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:22,822 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707672918] [2019-10-22 08:58:22,822 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,823 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:22,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:22,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707672918] [2019-10-22 08:58:22,897 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:22,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:58:22,897 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952579113] [2019-10-22 08:58:22,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:58:22,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:22,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:58:22,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:58:22,899 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2019-10-22 08:58:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:23,096 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2019-10-22 08:58:23,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:58:23,097 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-10-22 08:58:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:23,098 INFO L225 Difference]: With dead ends: 66 [2019-10-22 08:58:23,098 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 08:58:23,099 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:58:23,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 08:58:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2019-10-22 08:58:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-10-22 08:58:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2019-10-22 08:58:23,108 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2019-10-22 08:58:23,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:23,109 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2019-10-22 08:58:23,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:58:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2019-10-22 08:58:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:58:23,110 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:23,110 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:23,110 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:23,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:23,111 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2019-10-22 08:58:23,111 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:23,111 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464833073] [2019-10-22 08:58:23,111 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:23,111 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:23,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:58:23,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464833073] [2019-10-22 08:58:23,141 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:23,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:58:23,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463954077] [2019-10-22 08:58:23,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:58:23,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:23,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:58:23,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:58:23,142 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2019-10-22 08:58:23,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:23,153 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2019-10-22 08:58:23,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:58:23,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 08:58:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:23,154 INFO L225 Difference]: With dead ends: 61 [2019-10-22 08:58:23,155 INFO L226 Difference]: Without dead ends: 60 [2019-10-22 08:58:23,155 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:58:23,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-22 08:58:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2019-10-22 08:58:23,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-22 08:58:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2019-10-22 08:58:23,164 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2019-10-22 08:58:23,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:23,164 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2019-10-22 08:58:23,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:58:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2019-10-22 08:58:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:58:23,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:23,165 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:23,166 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:23,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2019-10-22 08:58:23,166 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:23,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713025790] [2019-10-22 08:58:23,167 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:23,167 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:23,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 08:58:23,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713025790] [2019-10-22 08:58:23,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:23,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:58:23,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361988697] [2019-10-22 08:58:23,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:23,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:23,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:23,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:23,245 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2019-10-22 08:58:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:23,296 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2019-10-22 08:58:23,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:58:23,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-22 08:58:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:23,298 INFO L225 Difference]: With dead ends: 93 [2019-10-22 08:58:23,298 INFO L226 Difference]: Without dead ends: 92 [2019-10-22 08:58:23,299 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:58:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-22 08:58:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2019-10-22 08:58:23,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 08:58:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2019-10-22 08:58:23,316 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2019-10-22 08:58:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:23,316 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2019-10-22 08:58:23,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2019-10-22 08:58:23,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 08:58:23,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:23,317 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:23,318 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:23,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:23,318 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2019-10-22 08:58:23,318 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:23,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088173132] [2019-10-22 08:58:23,319 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:23,319 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:23,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 08:58:23,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088173132] [2019-10-22 08:58:23,362 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:23,362 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:58:23,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918888415] [2019-10-22 08:58:23,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:23,362 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:23,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:23,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:23,363 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2019-10-22 08:58:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:23,404 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2019-10-22 08:58:23,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:58:23,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-22 08:58:23,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:23,406 INFO L225 Difference]: With dead ends: 93 [2019-10-22 08:58:23,406 INFO L226 Difference]: Without dead ends: 89 [2019-10-22 08:58:23,406 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:58:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-10-22 08:58:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2019-10-22 08:58:23,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 08:58:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2019-10-22 08:58:23,416 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2019-10-22 08:58:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:23,417 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2019-10-22 08:58:23,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2019-10-22 08:58:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 08:58:23,418 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:23,418 INFO L380 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:23,418 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1064471087, now seen corresponding path program 1 times [2019-10-22 08:58:23,419 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:23,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651593191] [2019-10-22 08:58:23,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:23,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:23,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-22 08:58:23,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651593191] [2019-10-22 08:58:23,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891611488] [2019-10-22 08:58:23,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/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 [2019-10-22 08:58:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:23,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-22 08:58:23,585 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:58:23,585 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-10-22 08:58:23,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914176221] [2019-10-22 08:58:23,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:23,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:23,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:23,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:58:23,586 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 5 states. [2019-10-22 08:58:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:23,637 INFO L93 Difference]: Finished difference Result 149 states and 199 transitions. [2019-10-22 08:58:23,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:58:23,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-10-22 08:58:23,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:23,639 INFO L225 Difference]: With dead ends: 149 [2019-10-22 08:58:23,639 INFO L226 Difference]: Without dead ends: 78 [2019-10-22 08:58:23,641 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:58:23,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-22 08:58:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-10-22 08:58:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 08:58:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2019-10-22 08:58:23,649 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 32 [2019-10-22 08:58:23,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:23,656 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2019-10-22 08:58:23,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2019-10-22 08:58:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-22 08:58:23,658 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:23,658 INFO L380 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:23,859 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:23,859 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:23,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1929359181, now seen corresponding path program 1 times [2019-10-22 08:58:23,860 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:23,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805849477] [2019-10-22 08:58:23,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:23,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:23,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-22 08:58:24,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805849477] [2019-10-22 08:58:24,058 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:24,058 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:58:24,058 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127178713] [2019-10-22 08:58:24,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:58:24,060 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:24,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:58:24,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:58:24,061 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 8 states. [2019-10-22 08:58:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:24,145 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2019-10-22 08:58:24,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:58:24,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2019-10-22 08:58:24,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:24,147 INFO L225 Difference]: With dead ends: 78 [2019-10-22 08:58:24,147 INFO L226 Difference]: Without dead ends: 76 [2019-10-22 08:58:24,148 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:58:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-10-22 08:58:24,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-10-22 08:58:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-10-22 08:58:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2019-10-22 08:58:24,169 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 68 [2019-10-22 08:58:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:24,170 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2019-10-22 08:58:24,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:58:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2019-10-22 08:58:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-22 08:58:24,171 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:24,172 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:24,172 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:24,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:24,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1059672828, now seen corresponding path program 1 times [2019-10-22 08:58:24,173 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:24,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767072600] [2019-10-22 08:58:24,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-22 08:58:24,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767072600] [2019-10-22 08:58:24,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726727332] [2019-10-22 08:58:24,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/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 [2019-10-22 08:58:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:58:24,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-22 08:58:24,437 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:24,437 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 14 [2019-10-22 08:58:24,437 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584204002] [2019-10-22 08:58:24,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 08:58:24,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:24,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 08:58:24,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:58:24,443 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand 14 states. [2019-10-22 08:58:24,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:24,676 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2019-10-22 08:58:24,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:58:24,677 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2019-10-22 08:58:24,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:24,678 INFO L225 Difference]: With dead ends: 149 [2019-10-22 08:58:24,678 INFO L226 Difference]: Without dead ends: 80 [2019-10-22 08:58:24,680 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2019-10-22 08:58:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-10-22 08:58:24,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2019-10-22 08:58:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-10-22 08:58:24,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2019-10-22 08:58:24,687 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 69 [2019-10-22 08:58:24,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:24,688 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2019-10-22 08:58:24,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 08:58:24,688 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2019-10-22 08:58:24,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-22 08:58:24,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:24,690 INFO L380 BasicCegarLoop]: trace histogram [8, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:24,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:24,891 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2033400675, now seen corresponding path program 2 times [2019-10-22 08:58:24,891 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:24,891 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621336193] [2019-10-22 08:58:24,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:24,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-10-22 08:58:25,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621336193] [2019-10-22 08:58:25,032 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:25,033 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:58:25,033 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012193998] [2019-10-22 08:58:25,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:58:25,034 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:25,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:58:25,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:58:25,034 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand 8 states. [2019-10-22 08:58:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:25,107 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2019-10-22 08:58:25,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:58:25,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2019-10-22 08:58:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:25,108 INFO L225 Difference]: With dead ends: 76 [2019-10-22 08:58:25,108 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:58:25,109 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:58:25,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:58:25,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:58:25,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:58:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:58:25,110 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2019-10-22 08:58:25,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:25,110 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:25,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:58:25,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:58:25,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:58:25,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:58:25,318 INFO L443 ceAbstractionStarter]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2019-10-22 08:58:25,318 INFO L439 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (or (and (<= 1 f_~x) (= |f_#in~x| f_~x)) (not (<= |f_#in~x| 2147483645))) [2019-10-22 08:58:25,319 INFO L443 ceAbstractionStarter]: For program point L13(lines 13 14) no Hoare annotation was computed. [2019-10-22 08:58:25,319 INFO L443 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-10-22 08:58:25,319 INFO L443 ceAbstractionStarter]: For program point L14-2(line 14) no Hoare annotation was computed. [2019-10-22 08:58:25,319 INFO L443 ceAbstractionStarter]: For program point L14-3(line 14) no Hoare annotation was computed. [2019-10-22 08:58:25,319 INFO L439 ceAbstractionStarter]: At program point L14-4(line 14) the Hoare annotation is: (or (and (<= 0 |f_#t~ret0|) (<= |f_#t~ret0| 0) (<= 1 f_~x) (= |f_#in~x| f_~x)) (not (<= |f_#in~x| 2147483645))) [2019-10-22 08:58:25,319 INFO L443 ceAbstractionStarter]: For program point L14-5(line 14) no Hoare annotation was computed. [2019-10-22 08:58:25,319 INFO L443 ceAbstractionStarter]: For program point L14-6(line 14) no Hoare annotation was computed. [2019-10-22 08:58:25,319 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2019-10-22 08:58:25,319 INFO L443 ceAbstractionStarter]: For program point L14-7(line 14) no Hoare annotation was computed. [2019-10-22 08:58:25,319 INFO L446 ceAbstractionStarter]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2019-10-22 08:58:25,320 INFO L443 ceAbstractionStarter]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 08:58:25,320 INFO L443 ceAbstractionStarter]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 08:58:25,320 INFO L443 ceAbstractionStarter]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 08:58:25,320 INFO L443 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 08:58:25,320 INFO L443 ceAbstractionStarter]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,320 INFO L443 ceAbstractionStarter]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,320 INFO L443 ceAbstractionStarter]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,320 INFO L443 ceAbstractionStarter]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2019-10-22 08:58:25,320 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,321 INFO L443 ceAbstractionStarter]: For program point L19(lines 19 20) no Hoare annotation was computed. [2019-10-22 08:58:25,321 INFO L443 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,321 INFO L439 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (and (or (not (<= |g_#in~x| 2147483645)) (<= g_~x 2147483645)) (or (and (<= 1 g_~x) (<= g_~x 2147483647) (<= |g_#in~x| g_~x)) (not (<= |g_#in~x| 2147483647)))) [2019-10-22 08:58:25,321 INFO L443 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,321 INFO L443 ceAbstractionStarter]: For program point L20-4(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,321 INFO L443 ceAbstractionStarter]: For program point L20-5(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,322 INFO L439 ceAbstractionStarter]: At program point L20-6(line 20) the Hoare annotation is: (and (or (not (<= |g_#in~x| 2147483645)) (<= g_~x 2147483645)) (or (not (<= |g_#in~x| 2147483647)) (and (<= 0 |g_#t~ret2|) (<= 1 g_~x) (<= g_~x 2147483647) (<= |g_#in~x| g_~x) (<= |g_#t~ret2| 0)))) [2019-10-22 08:58:25,322 INFO L443 ceAbstractionStarter]: For program point L20-7(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,322 INFO L443 ceAbstractionStarter]: For program point L20-8(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,322 INFO L443 ceAbstractionStarter]: For program point L20-9(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,322 INFO L443 ceAbstractionStarter]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2019-10-22 08:58:25,322 INFO L446 ceAbstractionStarter]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2019-10-22 08:58:25,322 INFO L443 ceAbstractionStarter]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,323 INFO L443 ceAbstractionStarter]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,323 INFO L443 ceAbstractionStarter]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 08:58:25,323 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:58:25,323 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:58:25,323 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:58:25,328 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-10-22 08:58:25,328 INFO L443 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2019-10-22 08:58:25,328 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 27) no Hoare annotation was computed. [2019-10-22 08:58:25,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:58:25 BoogieIcfgContainer [2019-10-22 08:58:25,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:58:25,333 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:25,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:25,333 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:25,334 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:22" (3/4) ... [2019-10-22 08:58:25,337 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:58:25,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2019-10-22 08:58:25,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2019-10-22 08:58:25,347 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 08:58:25,347 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:58:25,392 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_79f0cb1a-88dc-4ae7-8df3-c8a701002a8e/bin/uautomizer/witness.graphml [2019-10-22 08:58:25,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:25,394 INFO L168 Benchmark]: Toolchain (without parser) took 3690.99 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 225.4 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -237.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:25,395 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:25,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -221.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:25,395 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:25,396 INFO L168 Benchmark]: Boogie Preprocessor took 17.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:25,396 INFO L168 Benchmark]: RCFGBuilder took 218.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:25,396 INFO L168 Benchmark]: TraceAbstraction took 3051.26 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 55.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -42.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:25,396 INFO L168 Benchmark]: Witness Printer took 59.83 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: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:25,398 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 309.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -221.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 218.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3051.26 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 55.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -42.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * Witness Printer took 59.83 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: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 10 error locations. Result: SAFE, OverallTime: 3.0s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 306 SDtfs, 207 SDslu, 957 SDs, 0 SdLazy, 565 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 43 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 91 PreInvPairs, 103 NumberOfFragments, 89 HoareAnnotationTreeSize, 91 FomulaSimplifications, 69 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 68 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 449 NumberOfCodeBlocks, 449 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 437 ConstructedInterpolants, 0 QuantifiedInterpolants, 48709 SizeOfPredicates, 5 NumberOfNonLiveVariables, 207 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 435/467 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...