./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/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 0.2.0-a4ecdab [2020-11-28 03:13:49,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:49,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:49,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:49,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:49,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:49,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:49,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:49,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:49,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:49,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:49,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:49,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:49,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:49,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:49,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:49,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:49,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:49,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:49,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:49,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:49,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:49,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:49,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:49,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:49,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:49,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:49,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:49,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:49,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:49,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:49,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:49,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:49,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:49,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:49,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:49,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:49,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:49,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:49,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:49,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:49,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 03:13:49,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:49,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:49,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:49,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:49,879 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:49,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:49,880 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:13:49,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:49,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:49,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:49,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:49,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:49,881 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:13:49,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:49,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:49,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:49,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:49,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:49,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:49,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:49,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:49,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:49,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:49,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:49,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:49,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:13:49,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:49,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:49,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c27ad91a5bec233234e07a14bfd5505e082df4cd [2020-11-28 03:13:50,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:50,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:50,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:50,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:50,158 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:50,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2020-11-28 03:13:50,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/data/c5c921633/7e72cda91a0147679f316341c15034e6/FLAGd01338cd1 [2020-11-28 03:13:50,624 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:50,625 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2020-11-28 03:13:50,635 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/data/c5c921633/7e72cda91a0147679f316341c15034e6/FLAGd01338cd1 [2020-11-28 03:13:51,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/data/c5c921633/7e72cda91a0147679f316341c15034e6 [2020-11-28 03:13:51,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:51,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:51,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:51,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:51,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:51,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef2d0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51, skipping insertion in model container [2020-11-28 03:13:51,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:51,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:51,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:51,227 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:51,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:51,252 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:51,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51 WrapperNode [2020-11-28 03:13:51,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:51,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:51,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:51,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:51,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:51,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:51,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:51,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:51,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:51,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:51,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:51,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:51,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/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 [2020-11-28 03:13:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-11-28 03:13:51,397 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-11-28 03:13:51,397 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-11-28 03:13:51,398 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-11-28 03:13:51,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:51,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:51,674 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:51,674 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 03:13:51,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:51 BoogieIcfgContainer [2020-11-28 03:13:51,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:51,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:51,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:51,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:51,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:51" (1/3) ... [2020-11-28 03:13:51,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e437b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:51, skipping insertion in model container [2020-11-28 03:13:51,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (2/3) ... [2020-11-28 03:13:51,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e437b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:51, skipping insertion in model container [2020-11-28 03:13:51,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:51" (3/3) ... [2020-11-28 03:13:51,704 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2020-11-28 03:13:51,715 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:51,734 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-28 03:13:51,759 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-28 03:13:51,785 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:51,785 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:51,785 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:51,786 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:51,786 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:51,786 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:51,786 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:51,786 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-11-28 03:13:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 03:13:51,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:51,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 03:13:51,815 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:51,825 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2020-11-28 03:13:51,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:51,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109286446] [2020-11-28 03:13:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:52,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109286446] [2020-11-28 03:13:52,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:52,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:13:52,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493944067] [2020-11-28 03:13:52,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:13:52,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:52,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:13:52,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:52,028 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2020-11-28 03:13:52,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:52,190 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-11-28 03:13:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:13:52,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-28 03:13:52,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:52,203 INFO L225 Difference]: With dead ends: 64 [2020-11-28 03:13:52,203 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:13:52,219 INFO L677 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 [2020-11-28 03:13:52,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:13:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-11-28 03:13:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 03:13:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-11-28 03:13:52,263 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2020-11-28 03:13:52,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:52,263 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-11-28 03:13:52,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:13:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-11-28 03:13:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:13:52,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:52,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:13:52,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:13:52,269 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:52,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:52,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2020-11-28 03:13:52,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:52,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232470131] [2020-11-28 03:13:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:52,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232470131] [2020-11-28 03:13:52,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:52,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:13:52,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375450754] [2020-11-28 03:13:52,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:52,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:52,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:52,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:52,295 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2020-11-28 03:13:52,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:52,339 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-11-28 03:13:52,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:52,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 03:13:52,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:52,341 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:13:52,341 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:13:52,342 INFO L677 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 [2020-11-28 03:13:52,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:13:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-11-28 03:13:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-28 03:13:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-11-28 03:13:52,356 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2020-11-28 03:13:52,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:52,357 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-11-28 03:13:52,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:52,358 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-11-28 03:13:52,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:13:52,359 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:52,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:52,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:13:52,361 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:52,365 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2020-11-28 03:13:52,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:52,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443061780] [2020-11-28 03:13:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:52,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443061780] [2020-11-28 03:13:52,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:52,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:13:52,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210391579] [2020-11-28 03:13:52,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:13:52,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:52,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:13:52,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:13:52,467 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2020-11-28 03:13:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:52,713 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-11-28 03:13:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:13:52,714 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-11-28 03:13:52,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:52,715 INFO L225 Difference]: With dead ends: 66 [2020-11-28 03:13:52,715 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 03:13:52,716 INFO L677 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 [2020-11-28 03:13:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 03:13:52,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-11-28 03:13:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 03:13:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-11-28 03:13:52,728 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2020-11-28 03:13:52,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:52,728 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-11-28 03:13:52,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:13:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-11-28 03:13:52,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:13:52,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:52,729 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:52,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:13:52,730 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:52,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:52,730 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2020-11-28 03:13:52,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:52,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272280025] [2020-11-28 03:13:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-28 03:13:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:13:52,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272280025] [2020-11-28 03:13:52,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:52,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:13:52,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731593880] [2020-11-28 03:13:52,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:13:52,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:52,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:13:52,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:13:52,767 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2020-11-28 03:13:52,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:52,785 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-11-28 03:13:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:13:52,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:13:52,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:52,790 INFO L225 Difference]: With dead ends: 61 [2020-11-28 03:13:52,790 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 03:13:52,791 INFO L677 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 [2020-11-28 03:13:52,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 03:13:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-11-28 03:13:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 03:13:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-11-28 03:13:52,812 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2020-11-28 03:13:52,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:52,813 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-11-28 03:13:52,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:13:52,813 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-11-28 03:13:52,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:13:52,814 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:52,814 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:52,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:13:52,815 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:52,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:52,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2020-11-28 03:13:52,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:52,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686224070] [2020-11-28 03:13:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:52,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:13:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:13:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 03:13:52,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686224070] [2020-11-28 03:13:52,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:52,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:13:52,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528992403] [2020-11-28 03:13:52,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:13:52,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:52,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:13:52,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:52,930 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-11-28 03:13:53,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:53,012 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2020-11-28 03:13:53,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:13:53,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-28 03:13:53,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:53,015 INFO L225 Difference]: With dead ends: 93 [2020-11-28 03:13:53,015 INFO L226 Difference]: Without dead ends: 92 [2020-11-28 03:13:53,015 INFO L677 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 [2020-11-28 03:13:53,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-28 03:13:53,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2020-11-28 03:13:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-28 03:13:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-11-28 03:13:53,031 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2020-11-28 03:13:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:53,031 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-11-28 03:13:53,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:13:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-11-28 03:13:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:13:53,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:53,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:53,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:13:53,034 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:53,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:53,034 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2020-11-28 03:13:53,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:53,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444267771] [2020-11-28 03:13:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:13:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:53,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-28 03:13:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 03:13:53,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444267771] [2020-11-28 03:13:53,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:53,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:13:53,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934907539] [2020-11-28 03:13:53,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:13:53,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:53,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:13:53,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:53,105 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2020-11-28 03:13:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:53,220 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-11-28 03:13:53,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:13:53,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-28 03:13:53,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:53,225 INFO L225 Difference]: With dead ends: 93 [2020-11-28 03:13:53,226 INFO L226 Difference]: Without dead ends: 89 [2020-11-28 03:13:53,226 INFO L677 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 [2020-11-28 03:13:53,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-28 03:13:53,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-11-28 03:13:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-28 03:13:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2020-11-28 03:13:53,247 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2020-11-28 03:13:53,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:53,248 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2020-11-28 03:13:53,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:13:53,253 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2020-11-28 03:13:53,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:13:53,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:53,256 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:53,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:13:53,257 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:13:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash -2082036524, now seen corresponding path program 1 times [2020-11-28 03:13:53,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:53,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389950517] [2020-11-28 03:13:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-28 03:13:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-28 03:13:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:53,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-28 03:13:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 03:13:53,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389950517] [2020-11-28 03:13:53,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251276998] [2020-11-28 03:13:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/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 [2020-11-28 03:13:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:53,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:13:53,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 03:13:53,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:13:53,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2020-11-28 03:13:53,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095605029] [2020-11-28 03:13:53,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:13:53,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:53,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:13:53,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:13:53,543 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 10 states. [2020-11-28 03:13:53,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:53,752 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2020-11-28 03:13:53,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:13:53,753 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-11-28 03:13:53,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:53,754 INFO L225 Difference]: With dead ends: 123 [2020-11-28 03:13:53,754 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:13:53,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:13:53,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:13:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:13:53,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:13:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:13:53,757 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-11-28 03:13:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:53,757 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:13:53,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:13:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:13:53,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:13:53,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-28 03:13:53,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:13:54,303 INFO L274 CegarLoopResult]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2020-11-28 03:13:54,303 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (or (not (<= |f_#in~x| 2147483646)) (and (<= f_~x 2147483646) (<= 1 f_~x) (<= |f_#in~x| f_~x))) (not (<= (+ |f_#in~x| 1) 0))) [2020-11-28 03:13:54,303 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-28 03:13:54,304 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-11-28 03:13:54,304 INFO L274 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-11-28 03:13:54,304 INFO L274 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-11-28 03:13:54,304 INFO L270 CegarLoopResult]: At program point L14-4(line 14) the Hoare annotation is: (and (or (not (<= |f_#in~x| 2147483646)) (and (<= f_~x 2147483646) (<= 1 f_~x) (<= |f_#in~x| f_~x))) (not (<= (+ |f_#in~x| 1) 0))) [2020-11-28 03:13:54,304 INFO L274 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-11-28 03:13:54,304 INFO L274 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-28 03:13:54,304 INFO L274 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-28 03:13:54,305 INFO L274 CegarLoopResult]: For program point L14-6(line 14) no Hoare annotation was computed. [2020-11-28 03:13:54,305 INFO L274 CegarLoopResult]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2020-11-28 03:13:54,305 INFO L274 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2020-11-28 03:13:54,306 INFO L277 CegarLoopResult]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2020-11-28 03:13:54,307 INFO L274 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-28 03:13:54,307 INFO L274 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-28 03:13:54,307 INFO L274 CegarLoopResult]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2020-11-28 03:13:54,307 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,307 INFO L274 CegarLoopResult]: For program point L19(lines 19 20) no Hoare annotation was computed. [2020-11-28 03:13:54,307 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,307 INFO L270 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (or (not (<= |g_#in~x| 2147483646)) (<= 1 g_~x)) (or (= |g_#in~x| g_~x) (not (<= |g_#in~x| 2147483647)))) [2020-11-28 03:13:54,308 INFO L274 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,308 INFO L274 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,308 INFO L274 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,308 INFO L270 CegarLoopResult]: At program point L20-6(line 20) the Hoare annotation is: (and (or (and (<= g_~x 1) (= |g_#in~x| g_~x)) (not (<= |g_#in~x| 2147483647))) (or (not (<= |g_#in~x| 2147483646)) (and (<= 1 g_~x) (<= 0 |g_#t~ret2|) (<= |g_#t~ret2| 0)))) [2020-11-28 03:13:54,308 INFO L274 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,308 INFO L274 CegarLoopResult]: For program point L20-8(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,308 INFO L274 CegarLoopResult]: For program point L20-9(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,309 INFO L274 CegarLoopResult]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,309 INFO L274 CegarLoopResult]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2020-11-28 03:13:54,309 INFO L274 CegarLoopResult]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,309 INFO L277 CegarLoopResult]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2020-11-28 03:13:54,309 INFO L274 CegarLoopResult]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,309 INFO L274 CegarLoopResult]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,309 INFO L274 CegarLoopResult]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,310 INFO L274 CegarLoopResult]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 03:13:54,310 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:13:54,310 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:13:54,310 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:13:54,310 INFO L270 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-28 03:13:54,310 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-28 03:13:54,310 INFO L274 CegarLoopResult]: For program point L24(lines 24 27) no Hoare annotation was computed. [2020-11-28 03:13:54,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:13:54 BoogieIcfgContainer [2020-11-28 03:13:54,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:13:54,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:54,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:54,317 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:54,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:51" (3/4) ... [2020-11-28 03:13:54,321 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:13:54,328 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2020-11-28 03:13:54,328 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2020-11-28 03:13:54,335 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 03:13:54,336 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 03:13:54,399 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e09c0527-6891-4434-b728-3c4d413fdbe7/bin/uautomizer/witness.graphml [2020-11-28 03:13:54,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:54,401 INFO L168 Benchmark]: Toolchain (without parser) took 3349.59 ms. Allocated memory is still 117.4 MB. Free memory was 98.2 MB in the beginning and 76.8 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:54,401 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 56.4 MB in the beginning and 56.3 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:54,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.43 ms. Allocated memory is still 117.4 MB. Free memory was 97.9 MB in the beginning and 89.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:54,405 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.23 ms. Allocated memory is still 117.4 MB. Free memory was 89.4 MB in the beginning and 88.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:54,406 INFO L168 Benchmark]: Boogie Preprocessor took 15.85 ms. Allocated memory is still 117.4 MB. Free memory was 88.2 MB in the beginning and 87.2 MB in the end (delta: 988.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:54,406 INFO L168 Benchmark]: RCFGBuilder took 381.52 ms. Allocated memory is still 117.4 MB. Free memory was 87.2 MB in the beginning and 75.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:54,409 INFO L168 Benchmark]: TraceAbstraction took 2634.02 ms. Allocated memory is still 117.4 MB. Free memory was 74.7 MB in the beginning and 78.9 MB in the end (delta: -4.1 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:54,409 INFO L168 Benchmark]: Witness Printer took 82.07 ms. Allocated memory is still 117.4 MB. Free memory was 78.9 MB in the beginning and 76.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:54,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 56.4 MB in the beginning and 56.3 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 190.43 ms. Allocated memory is still 117.4 MB. Free memory was 97.9 MB in the beginning and 89.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.23 ms. Allocated memory is still 117.4 MB. Free memory was 89.4 MB in the beginning and 88.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.85 ms. Allocated memory is still 117.4 MB. Free memory was 88.2 MB in the beginning and 87.2 MB in the end (delta: 988.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 381.52 ms. Allocated memory is still 117.4 MB. Free memory was 87.2 MB in the beginning and 75.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2634.02 ms. Allocated memory is still 117.4 MB. Free memory was 74.7 MB in the beginning and 78.9 MB in the end (delta: -4.1 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.1 GB. * Witness Printer took 82.07 ms. Allocated memory is still 117.4 MB. Free memory was 78.9 MB in the beginning and 76.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 225 SDtfs, 182 SDslu, 525 SDs, 0 SdLazy, 326 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 39 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 55 PreInvPairs, 61 NumberOfFragments, 94 HoareAnnotationTreeSize, 55 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 63 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 5670 SizeOfPredicates, 3 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 29/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...