./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/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 c27ad91a5bec233234e07a14bfd5505e082df4cd ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:19:47,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:19:47,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:19:47,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:19:47,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:19:47,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:19:47,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:19:47,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:19:47,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:19:47,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:19:47,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:19:47,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:19:47,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:19:47,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:19:47,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:19:47,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:19:47,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:19:47,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:19:47,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:19:47,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:19:47,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:19:47,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:19:47,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:19:47,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:19:47,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:19:47,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:19:47,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:19:47,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:19:47,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:19:47,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:19:47,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:19:47,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:19:47,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:19:47,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:19:47,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:19:47,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:19:47,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:19:47,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:19:47,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:19:47,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:19:47,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:19:47,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-15 21:19:47,700 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:19:47,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:19:47,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:19:47,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:19:47,702 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:19:47,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:19:47,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:19:47,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:19:47,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:19:47,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:19:47,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:19:47,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:19:47,704 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-15 21:19:47,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:19:47,704 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:19:47,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:19:47,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:19:47,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:19:47,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:19:47,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:19:47,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:19:47,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:19:47,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:19:47,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:19:47,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:19:47,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:19:47,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:19:47,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/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 -> c27ad91a5bec233234e07a14bfd5505e082df4cd [2019-11-15 21:19:47,733 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:19:47,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:19:47,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:19:47,756 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:19:47,757 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:19:47,757 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2019-11-15 21:19:47,821 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/data/2e1090d91/a52f811704e84c878c8730c5b5c9fef6/FLAGa40efe926 [2019-11-15 21:19:48,154 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:19:48,156 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2019-11-15 21:19:48,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/data/2e1090d91/a52f811704e84c878c8730c5b5c9fef6/FLAGa40efe926 [2019-11-15 21:19:48,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/data/2e1090d91/a52f811704e84c878c8730c5b5c9fef6 [2019-11-15 21:19:48,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:19:48,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:19:48,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:19:48,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:19:48,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:19:48,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:19:48" (1/1) ... [2019-11-15 21:19:48,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a1c7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48, skipping insertion in model container [2019-11-15 21:19:48,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:19:48" (1/1) ... [2019-11-15 21:19:48,577 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:19:48,590 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:19:48,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:19:48,753 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:19:48,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:19:48,840 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:19:48,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48 WrapperNode [2019-11-15 21:19:48,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:19:48,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:19:48,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:19:48,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:19:48,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48" (1/1) ... [2019-11-15 21:19:48,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48" (1/1) ... [2019-11-15 21:19:48,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:19:48,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:19:48,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:19:48,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:19:48,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48" (1/1) ... [2019-11-15 21:19:48,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48" (1/1) ... [2019-11-15 21:19:48,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48" (1/1) ... [2019-11-15 21:19:48,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48" (1/1) ... [2019-11-15 21:19:48,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48" (1/1) ... [2019-11-15 21:19:48,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48" (1/1) ... [2019-11-15 21:19:48,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48" (1/1) ... [2019-11-15 21:19:48,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:19:48,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:19:48,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:19:48,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:19:48,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:19:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-15 21:19:48,959 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-15 21:19:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-15 21:19:48,959 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-15 21:19:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:19:48,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:19:49,160 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:19:49,161 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 21:19:49,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:19:49 BoogieIcfgContainer [2019-11-15 21:19:49,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:19:49,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:19:49,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:19:49,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:19:49,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:19:48" (1/3) ... [2019-11-15 21:19:49,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52270de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:19:49, skipping insertion in model container [2019-11-15 21:19:49,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:19:48" (2/3) ... [2019-11-15 21:19:49,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52270de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:19:49, skipping insertion in model container [2019-11-15 21:19:49,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:19:49" (3/3) ... [2019-11-15 21:19:49,179 INFO L109 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2019-11-15 21:19:49,188 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:19:49,203 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-15 21:19:49,220 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-15 21:19:49,246 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:19:49,246 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:19:49,247 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:19:49,247 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:19:49,247 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:19:49,247 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:19:49,247 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:19:49,249 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:19:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-11-15 21:19:49,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 21:19:49,274 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:19:49,275 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 21:19:49,277 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:19:49,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:19:49,283 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2019-11-15 21:19:49,290 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:19:49,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248315934] [2019-11-15 21:19:49,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:49,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:49,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:19:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:19:49,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248315934] [2019-11-15 21:19:49,476 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:19:49,477 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:19:49,477 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063025404] [2019-11-15 21:19:49,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:19:49,483 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:19:49,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:19:49,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:19:49,500 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2019-11-15 21:19:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:19:49,614 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2019-11-15 21:19:49,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:19:49,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-15 21:19:49,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:19:49,624 INFO L225 Difference]: With dead ends: 64 [2019-11-15 21:19:49,625 INFO L226 Difference]: Without dead ends: 56 [2019-11-15 21:19:49,628 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 [2019-11-15 21:19:49,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-15 21:19:49,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2019-11-15 21:19:49,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-15 21:19:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2019-11-15 21:19:49,673 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2019-11-15 21:19:49,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:19:49,673 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2019-11-15 21:19:49,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:19:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2019-11-15 21:19:49,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 21:19:49,674 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:19:49,674 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 21:19:49,675 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:19:49,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:19:49,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2019-11-15 21:19:49,676 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:19:49,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700115162] [2019-11-15 21:19:49,676 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:49,676 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:49,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:19:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:19:49,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700115162] [2019-11-15 21:19:49,697 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:19:49,697 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:19:49,697 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599976161] [2019-11-15 21:19:49,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:19:49,699 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:19:49,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:19:49,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:19:49,700 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2019-11-15 21:19:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:19:49,725 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2019-11-15 21:19:49,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:19:49,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-15 21:19:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:19:49,727 INFO L225 Difference]: With dead ends: 52 [2019-11-15 21:19:49,727 INFO L226 Difference]: Without dead ends: 50 [2019-11-15 21:19:49,728 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 [2019-11-15 21:19:49,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-15 21:19:49,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-11-15 21:19:49,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-15 21:19:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2019-11-15 21:19:49,739 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2019-11-15 21:19:49,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:19:49,740 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2019-11-15 21:19:49,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:19:49,740 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2019-11-15 21:19:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 21:19:49,741 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:19:49,742 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:19:49,742 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:19:49,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:19:49,743 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2019-11-15 21:19:49,744 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:19:49,744 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598832031] [2019-11-15 21:19:49,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:49,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:49,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:19:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:19:49,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598832031] [2019-11-15 21:19:49,843 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:19:49,843 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 21:19:49,843 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686672797] [2019-11-15 21:19:49,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 21:19:49,844 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:19:49,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 21:19:49,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:19:49,844 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2019-11-15 21:19:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:19:50,070 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2019-11-15 21:19:50,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 21:19:50,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-11-15 21:19:50,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:19:50,073 INFO L225 Difference]: With dead ends: 66 [2019-11-15 21:19:50,074 INFO L226 Difference]: Without dead ends: 63 [2019-11-15 21:19:50,074 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-15 21:19:50,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-15 21:19:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2019-11-15 21:19:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-15 21:19:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2019-11-15 21:19:50,092 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2019-11-15 21:19:50,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:19:50,093 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2019-11-15 21:19:50,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 21:19:50,093 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2019-11-15 21:19:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 21:19:50,094 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:19:50,094 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:19:50,096 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:19:50,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:19:50,096 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2019-11-15 21:19:50,097 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:19:50,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591658696] [2019-11-15 21:19:50,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:50,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:50,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:19:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 21:19:50,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591658696] [2019-11-15 21:19:50,148 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:19:50,149 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:19:50,149 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276507047] [2019-11-15 21:19:50,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:19:50,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:19:50,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:19:50,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:19:50,151 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2019-11-15 21:19:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:19:50,164 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2019-11-15 21:19:50,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:19:50,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-15 21:19:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:19:50,171 INFO L225 Difference]: With dead ends: 61 [2019-11-15 21:19:50,171 INFO L226 Difference]: Without dead ends: 60 [2019-11-15 21:19:50,172 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 [2019-11-15 21:19:50,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-15 21:19:50,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2019-11-15 21:19:50,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-15 21:19:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2019-11-15 21:19:50,183 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2019-11-15 21:19:50,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:19:50,184 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2019-11-15 21:19:50,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:19:50,184 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2019-11-15 21:19:50,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 21:19:50,185 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:19:50,185 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:19:50,186 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:19:50,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:19:50,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2019-11-15 21:19:50,186 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:19:50,187 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887696989] [2019-11-15 21:19:50,187 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:50,187 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:50,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:19:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 21:19:50,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887696989] [2019-11-15 21:19:50,247 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:19:50,247 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 21:19:50,247 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777330265] [2019-11-15 21:19:50,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:19:50,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:19:50,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:19:50,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:19:50,248 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2019-11-15 21:19:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:19:50,304 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2019-11-15 21:19:50,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:19:50,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-15 21:19:50,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:19:50,306 INFO L225 Difference]: With dead ends: 93 [2019-11-15 21:19:50,306 INFO L226 Difference]: Without dead ends: 92 [2019-11-15 21:19:50,307 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 [2019-11-15 21:19:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-15 21:19:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2019-11-15 21:19:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-15 21:19:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2019-11-15 21:19:50,322 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2019-11-15 21:19:50,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:19:50,323 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2019-11-15 21:19:50,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:19:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2019-11-15 21:19:50,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 21:19:50,324 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:19:50,324 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:19:50,325 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:19:50,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:19:50,325 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2019-11-15 21:19:50,326 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:19:50,326 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830756729] [2019-11-15 21:19:50,326 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:50,326 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:50,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:19:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 21:19:50,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830756729] [2019-11-15 21:19:50,394 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:19:50,395 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 21:19:50,395 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436832022] [2019-11-15 21:19:50,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:19:50,395 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:19:50,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:19:50,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:19:50,396 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2019-11-15 21:19:50,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:19:50,473 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2019-11-15 21:19:50,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:19:50,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-15 21:19:50,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:19:50,477 INFO L225 Difference]: With dead ends: 93 [2019-11-15 21:19:50,477 INFO L226 Difference]: Without dead ends: 89 [2019-11-15 21:19:50,478 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 [2019-11-15 21:19:50,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-11-15 21:19:50,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2019-11-15 21:19:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-15 21:19:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2019-11-15 21:19:50,501 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2019-11-15 21:19:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:19:50,509 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2019-11-15 21:19:50,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:19:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2019-11-15 21:19:50,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 21:19:50,511 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:19:50,512 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:19:50,512 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:19:50,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:19:50,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102097, now seen corresponding path program 1 times [2019-11-15 21:19:50,513 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:19:50,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247674221] [2019-11-15 21:19:50,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:50,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:50,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:19:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 21:19:50,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247674221] [2019-11-15 21:19:50,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915803162] [2019-11-15 21:19:50,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:19:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:50,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:19:50,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:19:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 21:19:50,706 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 21:19:50,706 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-11-15 21:19:50,707 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78549282] [2019-11-15 21:19:50,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 21:19:50,707 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:19:50,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 21:19:50,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:19:50,708 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 5 states. [2019-11-15 21:19:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:19:50,789 INFO L93 Difference]: Finished difference Result 149 states and 199 transitions. [2019-11-15 21:19:50,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:19:50,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-11-15 21:19:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:19:50,794 INFO L225 Difference]: With dead ends: 149 [2019-11-15 21:19:50,794 INFO L226 Difference]: Without dead ends: 78 [2019-11-15 21:19:50,796 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:19:50,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-15 21:19:50,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-11-15 21:19:50,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-15 21:19:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2019-11-15 21:19:50,812 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 24 [2019-11-15 21:19:50,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:19:50,812 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2019-11-15 21:19:50,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 21:19:50,813 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2019-11-15 21:19:50,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-15 21:19:50,824 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:19:50,824 INFO L380 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:19:51,029 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:19:51,030 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:19:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:19:51,030 INFO L82 PathProgramCache]: Analyzing trace with hash 518188496, now seen corresponding path program 1 times [2019-11-15 21:19:51,031 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:19:51,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488673576] [2019-11-15 21:19:51,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:51,032 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:51,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:19:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 24 proven. 38 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-11-15 21:19:51,408 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488673576] [2019-11-15 21:19:51,409 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420669371] [2019-11-15 21:19:51,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:19:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:51,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 21:19:51,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:19:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-11-15 21:19:51,529 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:19:51,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 17 [2019-11-15 21:19:51,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145341792] [2019-11-15 21:19:51,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-15 21:19:51,534 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:19:51,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-15 21:19:51,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2019-11-15 21:19:51,535 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 17 states. [2019-11-15 21:19:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:19:51,977 INFO L93 Difference]: Finished difference Result 153 states and 193 transitions. [2019-11-15 21:19:51,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-15 21:19:51,978 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2019-11-15 21:19:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:19:51,980 INFO L225 Difference]: With dead ends: 153 [2019-11-15 21:19:51,980 INFO L226 Difference]: Without dead ends: 82 [2019-11-15 21:19:51,982 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2019-11-15 21:19:51,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-15 21:19:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2019-11-15 21:19:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-15 21:19:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2019-11-15 21:19:51,992 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 76 [2019-11-15 21:19:51,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:19:51,992 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2019-11-15 21:19:51,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-15 21:19:51,993 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2019-11-15 21:19:51,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-15 21:19:51,999 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:19:51,999 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] [2019-11-15 21:19:52,203 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:19:52,207 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:19:52,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:19:52,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1929359181, now seen corresponding path program 2 times [2019-11-15 21:19:52,208 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:19:52,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434737600] [2019-11-15 21:19:52,208 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:52,208 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:52,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:19:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-11-15 21:19:52,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434737600] [2019-11-15 21:19:52,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894422830] [2019-11-15 21:19:52,466 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:19:52,549 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:19:52,549 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:19:52,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 21:19:52,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:19:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-15 21:19:52,638 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:19:52,638 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 17 [2019-11-15 21:19:52,638 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085730391] [2019-11-15 21:19:52,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 21:19:52,639 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:19:52,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 21:19:52,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2019-11-15 21:19:52,640 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 18 states. [2019-11-15 21:19:53,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:19:53,174 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2019-11-15 21:19:53,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-15 21:19:53,175 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 68 [2019-11-15 21:19:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:19:53,177 INFO L225 Difference]: With dead ends: 124 [2019-11-15 21:19:53,177 INFO L226 Difference]: Without dead ends: 122 [2019-11-15 21:19:53,178 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=862, Unknown=0, NotChecked=0, Total=992 [2019-11-15 21:19:53,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-15 21:19:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 112. [2019-11-15 21:19:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-15 21:19:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 132 transitions. [2019-11-15 21:19:53,190 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 132 transitions. Word has length 68 [2019-11-15 21:19:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:19:53,191 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 132 transitions. [2019-11-15 21:19:53,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 21:19:53,191 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 132 transitions. [2019-11-15 21:19:53,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-15 21:19:53,192 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:19:53,193 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:19:53,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:19:53,396 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:19:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:19:53,396 INFO L82 PathProgramCache]: Analyzing trace with hash -257147105, now seen corresponding path program 1 times [2019-11-15 21:19:53,396 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:19:53,396 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271555178] [2019-11-15 21:19:53,396 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:53,397 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:19:53,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:19:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-15 21:19:53,613 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271555178] [2019-11-15 21:19:53,613 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269806342] [2019-11-15 21:19:53,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:19:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:19:53,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 21:19:53,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:19:53,809 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-15 21:19:53,809 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:19:53,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 19 [2019-11-15 21:19:53,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513991059] [2019-11-15 21:19:53,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-15 21:19:53,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:19:53,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-15 21:19:53,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2019-11-15 21:19:53,811 INFO L87 Difference]: Start difference. First operand 112 states and 132 transitions. Second operand 19 states. [2019-11-15 21:19:54,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:19:54,127 INFO L93 Difference]: Finished difference Result 153 states and 183 transitions. [2019-11-15 21:19:54,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 21:19:54,130 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 61 [2019-11-15 21:19:54,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:19:54,131 INFO L225 Difference]: With dead ends: 153 [2019-11-15 21:19:54,131 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 21:19:54,132 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2019-11-15 21:19:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 21:19:54,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 21:19:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 21:19:54,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 21:19:54,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2019-11-15 21:19:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:19:54,135 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:19:54,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-15 21:19:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 21:19:54,136 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 21:19:54,339 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:19:54,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 21:19:54,571 INFO L443 ceAbstractionStarter]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2019-11-15 21:19:54,571 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| 2147483646))) [2019-11-15 21:19:54,571 INFO L443 ceAbstractionStarter]: For program point L13(lines 13 14) no Hoare annotation was computed. [2019-11-15 21:19:54,571 INFO L443 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-11-15 21:19:54,571 INFO L443 ceAbstractionStarter]: For program point L14-2(line 14) no Hoare annotation was computed. [2019-11-15 21:19:54,571 INFO L443 ceAbstractionStarter]: For program point L14-3(line 14) no Hoare annotation was computed. [2019-11-15 21:19:54,572 INFO L439 ceAbstractionStarter]: At program point L14-4(line 14) the Hoare annotation is: (or (and (<= 1 (+ f_~x |f_#t~ret0|)) (<= |f_#t~ret0| 0) (= |f_#in~x| f_~x)) (not (<= |f_#in~x| 2147483646))) [2019-11-15 21:19:54,572 INFO L443 ceAbstractionStarter]: For program point L14-5(line 14) no Hoare annotation was computed. [2019-11-15 21:19:54,572 INFO L443 ceAbstractionStarter]: For program point L14-6(line 14) no Hoare annotation was computed. [2019-11-15 21:19:54,572 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2019-11-15 21:19:54,572 INFO L443 ceAbstractionStarter]: For program point L14-7(line 14) no Hoare annotation was computed. [2019-11-15 21:19:54,572 INFO L446 ceAbstractionStarter]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2019-11-15 21:19:54,572 INFO L443 ceAbstractionStarter]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-15 21:19:54,572 INFO L443 ceAbstractionStarter]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-15 21:19:54,572 INFO L443 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-15 21:19:54,572 INFO L443 ceAbstractionStarter]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-11-15 21:19:54,572 INFO L443 ceAbstractionStarter]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,573 INFO L443 ceAbstractionStarter]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2019-11-15 21:19:54,573 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,573 INFO L443 ceAbstractionStarter]: For program point L19(lines 19 20) no Hoare annotation was computed. [2019-11-15 21:19:54,573 INFO L443 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,573 INFO L439 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (and (or (= |g_#in~x| g_~x) (not (<= |g_#in~x| 2147483647))) (or (<= 1 g_~x) (not (<= |g_#in~x| 2147483646)))) [2019-11-15 21:19:54,573 INFO L443 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,573 INFO L443 ceAbstractionStarter]: For program point L20-4(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,573 INFO L443 ceAbstractionStarter]: For program point L20-5(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,573 INFO L439 ceAbstractionStarter]: At program point L20-6(line 20) the Hoare annotation is: (or (not (<= |g_#in~x| 2147483647)) (and (<= 0 |g_#t~ret2|) (<= 1 g_~x) (<= |g_#t~ret2| 0) (= |g_#in~x| g_~x) (<= |g_#in~x| 1))) [2019-11-15 21:19:54,574 INFO L443 ceAbstractionStarter]: For program point L20-7(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,574 INFO L443 ceAbstractionStarter]: For program point L20-8(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,574 INFO L443 ceAbstractionStarter]: For program point L20-9(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,574 INFO L443 ceAbstractionStarter]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2019-11-15 21:19:54,574 INFO L443 ceAbstractionStarter]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,574 INFO L443 ceAbstractionStarter]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,574 INFO L443 ceAbstractionStarter]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,574 INFO L446 ceAbstractionStarter]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2019-11-15 21:19:54,574 INFO L443 ceAbstractionStarter]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,575 INFO L443 ceAbstractionStarter]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-15 21:19:54,575 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 21:19:54,575 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 21:19:54,575 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 21:19:54,575 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-11-15 21:19:54,575 INFO L443 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2019-11-15 21:19:54,575 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 27) no Hoare annotation was computed. [2019-11-15 21:19:54,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:19:54 BoogieIcfgContainer [2019-11-15 21:19:54,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:19:54,580 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:19:54,580 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:19:54,580 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:19:54,581 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:19:49" (3/4) ... [2019-11-15 21:19:54,591 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 21:19:54,597 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2019-11-15 21:19:54,598 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2019-11-15 21:19:54,605 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-15 21:19:54,605 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 21:19:54,661 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_30cc9f34-87fd-49b2-89d9-cfffdee436f4/bin/uautomizer/witness.graphml [2019-11-15 21:19:54,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:19:54,663 INFO L168 Benchmark]: Toolchain (without parser) took 6100.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.3 MB). Free memory was 948.9 MB in the beginning and 944.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 215.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:19:54,663 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:19:54,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:19:54,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:19:54,665 INFO L168 Benchmark]: Boogie Preprocessor took 24.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:19:54,665 INFO L168 Benchmark]: RCFGBuilder took 262.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:19:54,666 INFO L168 Benchmark]: TraceAbstraction took 5416.17 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 955.2 MB in the end (delta: 156.2 MB). Peak memory consumption was 224.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:19:54,666 INFO L168 Benchmark]: Witness Printer took 81.51 ms. Allocated memory is still 1.2 GB. Free memory was 955.2 MB in the beginning and 944.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:19:54,669 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 278.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 262.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5416.17 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 955.2 MB in the end (delta: 156.2 MB). Peak memory consumption was 224.9 MB. Max. memory is 11.5 GB. * Witness Printer took 81.51 ms. Allocated memory is still 1.2 GB. Free memory was 955.2 MB in the beginning and 944.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 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: 5.3s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 280 SDtfs, 334 SDslu, 942 SDs, 0 SdLazy, 1222 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 395 GetRequests, 281 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=9, 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, 53 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 121 PreInvPairs, 127 NumberOfFragments, 72 HoareAnnotationTreeSize, 121 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 186 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 542 NumberOfCodeBlocks, 542 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 528 ConstructedInterpolants, 0 QuantifiedInterpolants, 72867 SizeOfPredicates, 8 NumberOfNonLiveVariables, 465 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 432/525 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...