./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_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan --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 Taipan --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 [2020-11-22 12:58:58,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:58:58,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:58:58,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:58:58,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:58:58,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:58:58,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:58:58,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:58:58,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:58:58,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:58:58,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:58:58,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:58:58,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:58:58,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:58:58,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:58:58,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:58:58,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:58:58,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:58:58,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:58:58,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:58:58,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:58:58,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:58:58,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:58:58,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:58:58,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:58:58,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:58:58,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:58:58,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:58:58,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:58:58,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:58:58,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:58:58,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:58:58,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:58:58,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:58:58,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:58:58,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:58:58,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:58:58,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:58:58,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:58:58,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:58:58,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:58:58,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-22 12:58:58,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:58:58,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:58:58,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:58:58,885 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:58:58,886 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:58:58,886 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:58:58,886 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:58:58,886 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:58:58,886 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:58:58,887 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:58:58,888 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:58:58,888 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:58:58,888 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:58:58,888 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:58:58,888 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:58:58,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:58:58,889 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:58:58,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:58:58,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:58:58,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:58:58,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:58:58,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:58:58,891 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 12:58:58,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:58:58,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:58:58,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:58:58,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:58:58,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:58:58,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:58:58,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:58,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:58:58,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:58:58,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:58:58,895 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:58:58,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:58:58,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:58:58,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:58:58,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:58:58,896 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c27ad91a5bec233234e07a14bfd5505e082df4cd [2020-11-22 12:58:59,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:58:59,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:58:59,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:58:59,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:58:59,222 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:58:59,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2020-11-22 12:58:59,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/data/9a62a1cb3/94bd083ce75c41029e30a6aca6366e6e/FLAG080e4b3ba [2020-11-22 12:58:59,762 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:58:59,763 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2020-11-22 12:58:59,772 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/data/9a62a1cb3/94bd083ce75c41029e30a6aca6366e6e/FLAG080e4b3ba [2020-11-22 12:59:00,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/data/9a62a1cb3/94bd083ce75c41029e30a6aca6366e6e [2020-11-22 12:59:00,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:59:00,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:59:00,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:00,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:59:00,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:59:00,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3075b2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00, skipping insertion in model container [2020-11-22 12:59:00,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:59:00,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:59:00,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:00,327 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:59:00,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:00,354 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:59:00,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00 WrapperNode [2020-11-22 12:59:00,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:00,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:00,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:59:00,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:59:00,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:00,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:59:00,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:59:00,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:59:00,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:59:00,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:59:00,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:59:00,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:59:00,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/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 [2020-11-22 12:59:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-11-22 12:59:00,482 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-11-22 12:59:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-11-22 12:59:00,483 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-11-22 12:59:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:59:00,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:59:00,843 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:59:00,844 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-22 12:59:00,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:00 BoogieIcfgContainer [2020-11-22 12:59:00,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:59:00,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:59:00,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:59:00,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:59:00,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:59:00" (1/3) ... [2020-11-22 12:59:00,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a903fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:00, skipping insertion in model container [2020-11-22 12:59:00,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (2/3) ... [2020-11-22 12:59:00,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a903fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:00, skipping insertion in model container [2020-11-22 12:59:00,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:00" (3/3) ... [2020-11-22 12:59:00,866 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2020-11-22 12:59:00,875 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:59:00,879 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-22 12:59:00,890 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-22 12:59:00,916 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:59:00,917 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:59:00,917 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:59:00,917 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:59:00,917 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:59:00,917 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:59:00,918 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:59:00,918 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:59:00,939 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-22 12:59:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:59:00,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:00,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:59:00,946 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]=== [2020-11-22 12:59:00,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:00,952 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2020-11-22 12:59:00,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:00,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070328852] [2020-11-22 12:59:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:01,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070328852] [2020-11-22 12:59:01,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:01,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:01,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016499996] [2020-11-22 12:59:01,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:59:01,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:01,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:59:01,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:01,201 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2020-11-22 12:59:01,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:01,369 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-11-22 12:59:01,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:59:01,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-22 12:59:01,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:01,395 INFO L225 Difference]: With dead ends: 62 [2020-11-22 12:59:01,401 INFO L226 Difference]: Without dead ends: 56 [2020-11-22 12:59:01,405 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 [2020-11-22 12:59:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-22 12:59:01,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-11-22 12:59:01,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-22 12:59:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-11-22 12:59:01,481 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2020-11-22 12:59:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:01,482 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-11-22 12:59:01,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:59:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-11-22 12:59:01,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:59:01,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:01,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:59:01,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:59:01,487 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]=== [2020-11-22 12:59:01,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:01,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2020-11-22 12:59:01,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:01,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796604839] [2020-11-22 12:59:01,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:01,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:01,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796604839] [2020-11-22 12:59:01,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:01,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:01,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404790045] [2020-11-22 12:59:01,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:01,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:01,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:01,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:01,527 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2020-11-22 12:59:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:01,560 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-11-22 12:59:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:01,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-22 12:59:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:01,564 INFO L225 Difference]: With dead ends: 52 [2020-11-22 12:59:01,564 INFO L226 Difference]: Without dead ends: 50 [2020-11-22 12:59:01,565 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 [2020-11-22 12:59:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-22 12:59:01,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-11-22 12:59:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-22 12:59:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-11-22 12:59:01,586 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2020-11-22 12:59:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:01,587 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-11-22 12:59:01,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-11-22 12:59:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:59:01,588 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:01,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:01,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:59:01,588 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]=== [2020-11-22 12:59:01,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:01,589 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2020-11-22 12:59:01,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:01,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956886975] [2020-11-22 12:59:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:01,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956886975] [2020-11-22 12:59:01,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:01,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-22 12:59:01,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844594542] [2020-11-22 12:59:01,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 12:59:01,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:01,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 12:59:01,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:59:01,710 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2020-11-22 12:59:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:01,991 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-11-22 12:59:01,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-22 12:59:01,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-11-22 12:59:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:01,995 INFO L225 Difference]: With dead ends: 66 [2020-11-22 12:59:01,995 INFO L226 Difference]: Without dead ends: 63 [2020-11-22 12:59:01,996 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 [2020-11-22 12:59:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-22 12:59:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-11-22 12:59:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-22 12:59:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-11-22 12:59:02,017 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2020-11-22 12:59:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:02,018 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-11-22 12:59:02,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 12:59:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-11-22 12:59:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:59:02,020 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:02,020 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:02,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:59:02,022 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]=== [2020-11-22 12:59:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:02,024 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2020-11-22 12:59:02,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:02,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464471019] [2020-11-22 12:59:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 12:59:02,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464471019] [2020-11-22 12:59:02,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:02,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:02,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953468572] [2020-11-22 12:59:02,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:02,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:02,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:02,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:02,071 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2020-11-22 12:59:02,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:02,088 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-11-22 12:59:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:02,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-22 12:59:02,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:02,093 INFO L225 Difference]: With dead ends: 61 [2020-11-22 12:59:02,093 INFO L226 Difference]: Without dead ends: 60 [2020-11-22 12:59:02,096 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 [2020-11-22 12:59:02,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-22 12:59:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-11-22 12:59:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-22 12:59:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-11-22 12:59:02,105 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2020-11-22 12:59:02,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:02,105 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-11-22 12:59:02,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:02,105 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-11-22 12:59:02,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 12:59:02,106 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:02,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:02,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:59:02,106 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]=== [2020-11-22 12:59:02,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:02,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2020-11-22 12:59:02,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:02,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287853029] [2020-11-22 12:59:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 12:59:02,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287853029] [2020-11-22 12:59:02,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:02,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:59:02,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541979100] [2020-11-22 12:59:02,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:59:02,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:02,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:59:02,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:02,165 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-11-22 12:59:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:02,237 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2020-11-22 12:59:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:59:02,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-22 12:59:02,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:02,240 INFO L225 Difference]: With dead ends: 93 [2020-11-22 12:59:02,240 INFO L226 Difference]: Without dead ends: 92 [2020-11-22 12:59:02,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:59:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-22 12:59:02,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2020-11-22 12:59:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-22 12:59:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-11-22 12:59:02,259 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2020-11-22 12:59:02,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:02,260 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-11-22 12:59:02,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:59:02,260 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-11-22 12:59:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 12:59:02,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:02,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:02,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:59:02,262 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]=== [2020-11-22 12:59:02,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:02,263 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2020-11-22 12:59:02,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:02,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655247158] [2020-11-22 12:59:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 12:59:02,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655247158] [2020-11-22 12:59:02,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:02,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:59:02,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431136918] [2020-11-22 12:59:02,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:59:02,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:02,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:59:02,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:02,356 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2020-11-22 12:59:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:02,445 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-11-22 12:59:02,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:59:02,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-22 12:59:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:02,448 INFO L225 Difference]: With dead ends: 93 [2020-11-22 12:59:02,448 INFO L226 Difference]: Without dead ends: 89 [2020-11-22 12:59:02,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:59:02,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-22 12:59:02,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-11-22 12:59:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-22 12:59:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2020-11-22 12:59:02,460 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2020-11-22 12:59:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:02,461 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2020-11-22 12:59:02,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:59:02,461 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2020-11-22 12:59:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 12:59:02,462 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:02,462 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:02,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:59:02,463 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]=== [2020-11-22 12:59:02,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:02,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102097, now seen corresponding path program 1 times [2020-11-22 12:59:02,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:02,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355951226] [2020-11-22 12:59:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 12:59:02,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355951226] [2020-11-22 12:59:02,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064974616] [2020-11-22 12:59:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/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 [2020-11-22 12:59:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:02,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:59:02,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-22 12:59:02,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 12:59:02,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:59:02,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2020-11-22 12:59:02,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543514314] [2020-11-22 12:59:02,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:59:02,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:02,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:59:02,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:59:02,732 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 5 states. [2020-11-22 12:59:02,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:02,979 INFO L93 Difference]: Finished difference Result 149 states and 199 transitions. [2020-11-22 12:59:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:59:02,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-22 12:59:02,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:02,981 INFO L225 Difference]: With dead ends: 149 [2020-11-22 12:59:02,981 INFO L226 Difference]: Without dead ends: 78 [2020-11-22 12:59:02,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-22 12:59:02,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-22 12:59:02,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-22 12:59:02,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2020-11-22 12:59:02,996 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 24 [2020-11-22 12:59:02,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:02,997 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2020-11-22 12:59:02,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:59:02,997 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2020-11-22 12:59:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-22 12:59:03,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:03,004 INFO L422 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] [2020-11-22 12:59:03,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-22 12:59:03,204 INFO L429 AbstractCegarLoop]: === Iteration 8 === [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]=== [2020-11-22 12:59:03,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:03,205 INFO L82 PathProgramCache]: Analyzing trace with hash 407346927, now seen corresponding path program 1 times [2020-11-22 12:59:03,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:03,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198789488] [2020-11-22 12:59:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-22 12:59:03,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198789488] [2020-11-22 12:59:03,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680568279] [2020-11-22 12:59:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/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 [2020-11-22 12:59:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:03,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 12:59:03,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-22 12:59:03,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:03,693 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:59:03,697 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:59:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-22 12:59:03,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [148763542] [2020-11-22 12:59:03,788 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2020-11-22 12:59:03,788 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:59:03,794 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-22 12:59:03,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:59:03,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2020-11-22 12:59:03,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456769737] [2020-11-22 12:59:03,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 12:59:03,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:03,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 12:59:03,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:59:03,799 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 9 states. [2020-11-22 12:59:03,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:03,923 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2020-11-22 12:59:03,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:59:03,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-11-22 12:59:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:03,926 INFO L225 Difference]: With dead ends: 115 [2020-11-22 12:59:03,926 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:59:03,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 113 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-22 12:59:03,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:59:03,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:59:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:59:03,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:59:03,929 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2020-11-22 12:59:03,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:03,930 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:59:03,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 12:59:03,930 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:59:03,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:59:04,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:59:04,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:59:04,507 INFO L274 CegarLoopResult]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2020-11-22 12:59:04,507 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (or (not (<= |f_#in~x| 2147483646)) (and (<= f_~x 2147483646) (<= 1 f_~x) (<= |f_#in~x| f_~x))) [2020-11-22 12:59:04,507 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-22 12:59:04,508 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-11-22 12:59:04,508 INFO L274 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-11-22 12:59:04,508 INFO L274 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-11-22 12:59:04,508 INFO L270 CegarLoopResult]: At program point L14-4(line 14) the Hoare annotation is: (or (not (<= |f_#in~x| 2147483646)) (and (<= f_~x 2147483646) (<= 1 f_~x) (<= |f_#in~x| f_~x))) [2020-11-22 12:59:04,508 INFO L274 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-11-22 12:59:04,508 INFO L274 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-22 12:59:04,508 INFO L274 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-22 12:59:04,508 INFO L274 CegarLoopResult]: For program point L14-6(line 14) no Hoare annotation was computed. [2020-11-22 12:59:04,508 INFO L274 CegarLoopResult]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2020-11-22 12:59:04,509 INFO L274 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2020-11-22 12:59:04,509 INFO L277 CegarLoopResult]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2020-11-22 12:59:04,509 INFO L274 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-22 12:59:04,509 INFO L274 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-22 12:59:04,509 INFO L274 CegarLoopResult]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2020-11-22 12:59:04,509 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,509 INFO L274 CegarLoopResult]: For program point L19(lines 19 20) no Hoare annotation was computed. [2020-11-22 12:59:04,509 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,509 INFO L270 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (or (and (<= |g_#in~x| g_~x) (<= 1 g_~x) (<= g_~x 2147483647)) (not (<= |g_#in~x| 2147483647))) (or (<= g_~x 2147483646) (not (<= |g_#in~x| 2147483646)))) [2020-11-22 12:59:04,510 INFO L274 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,510 INFO L274 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,510 INFO L274 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,510 INFO L270 CegarLoopResult]: At program point L20-6(line 20) the Hoare annotation is: (and (or (and (<= 1 g_~x) (<= 0 |g_#t~ret2|) (<= |g_#in~x| 1) (<= |g_#t~ret2| 0)) (not (<= |g_#in~x| 2147483647))) (or (<= g_~x 2147483646) (not (<= |g_#in~x| 2147483646)))) [2020-11-22 12:59:04,510 INFO L274 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,510 INFO L274 CegarLoopResult]: For program point L20-8(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,510 INFO L274 CegarLoopResult]: For program point L20-9(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,511 INFO L274 CegarLoopResult]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,511 INFO L274 CegarLoopResult]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2020-11-22 12:59:04,511 INFO L274 CegarLoopResult]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,511 INFO L277 CegarLoopResult]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2020-11-22 12:59:04,511 INFO L274 CegarLoopResult]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,511 INFO L274 CegarLoopResult]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,511 INFO L274 CegarLoopResult]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,511 INFO L274 CegarLoopResult]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:59:04,511 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:59:04,511 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:59:04,512 INFO L270 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-22 12:59:04,512 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-22 12:59:04,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:59:04 BoogieIcfgContainer [2020-11-22 12:59:04,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:59:04,529 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:59:04,529 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:59:04,529 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:59:04,530 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:00" (3/4) ... [2020-11-22 12:59:04,533 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:59:04,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2020-11-22 12:59:04,540 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2020-11-22 12:59:04,550 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 12:59:04,550 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:59:04,551 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:59:04,620 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_63850cce-94a7-4d46-89d6-741938fbddd8/bin/utaipan/witness.graphml [2020-11-22 12:59:04,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:59:04,622 INFO L168 Benchmark]: Toolchain (without parser) took 4473.34 ms. Allocated memory was 86.0 MB in the beginning and 148.9 MB in the end (delta: 62.9 MB). Free memory was 45.3 MB in the beginning and 107.8 MB in the end (delta: -62.5 MB). Peak memory consumption was 966.8 kB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,623 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 61.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:04,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.20 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 45.1 MB in the beginning and 96.7 MB in the end (delta: -51.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,625 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.11 ms. Allocated memory is still 123.7 MB. Free memory was 96.7 MB in the beginning and 95.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,631 INFO L168 Benchmark]: Boogie Preprocessor took 17.53 ms. Allocated memory is still 123.7 MB. Free memory was 95.7 MB in the beginning and 94.8 MB in the end (delta: 907.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:04,631 INFO L168 Benchmark]: RCFGBuilder took 441.56 ms. Allocated memory is still 123.7 MB. Free memory was 94.8 MB in the beginning and 96.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,632 INFO L168 Benchmark]: TraceAbstraction took 3680.94 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 96.1 MB in the beginning and 109.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,633 INFO L168 Benchmark]: Witness Printer took 91.53 ms. Allocated memory is still 148.9 MB. Free memory was 109.9 MB in the beginning and 107.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 61.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 206.20 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 45.1 MB in the beginning and 96.7 MB in the end (delta: -51.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.11 ms. Allocated memory is still 123.7 MB. Free memory was 96.7 MB in the beginning and 95.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.53 ms. Allocated memory is still 123.7 MB. Free memory was 95.7 MB in the beginning and 94.8 MB in the end (delta: 907.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 441.56 ms. Allocated memory is still 123.7 MB. Free memory was 94.8 MB in the beginning and 96.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3680.94 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 96.1 MB in the beginning and 109.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 16.1 GB. * Witness Printer took 91.53 ms. Allocated memory is still 148.9 MB. Free memory was 109.9 MB in the beginning and 107.8 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, 40 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 249 SDtfs, 184 SDslu, 556 SDs, 0 SdLazy, 344 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 162 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 39 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 82 PreInvPairs, 91 NumberOfFragments, 86 HoareAnnotationTreeSize, 82 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 24106 SizeOfPredicates, 7 NumberOfNonLiveVariables, 174 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 190/205 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...