./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/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 9072a9376e1e28de1ef4dc11b7134f6f175023b7 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:08:16,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:08:16,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:08:16,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:08:16,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:08:16,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:08:16,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:08:16,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:08:16,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:08:16,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:08:17,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:08:17,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:08:17,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:08:17,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:08:17,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:08:17,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:08:17,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:08:17,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:08:17,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:08:17,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:08:17,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:08:17,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:08:17,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:08:17,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:08:17,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:08:17,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:08:17,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:08:17,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:08:17,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:08:17,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:08:17,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:08:17,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:08:17,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:08:17,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:08:17,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:08:17,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:08:17,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:08:17,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:08:17,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:08:17,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:08:17,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:08:17,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 14:08:17,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:08:17,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:08:17,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:08:17,045 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:08:17,045 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:08:17,045 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:08:17,046 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:08:17,046 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:08:17,046 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:08:17,046 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:08:17,046 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:08:17,046 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:08:17,046 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:08:17,047 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:08:17,047 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:08:17,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:08:17,047 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 14:08:17,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:08:17,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:08:17,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 14:08:17,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:08:17,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 14:08:17,048 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 14:08:17,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 14:08:17,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:08:17,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 14:08:17,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:08:17,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:08:17,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:08:17,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:08:17,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:08:17,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 14:08:17,049 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:08:17,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:08:17,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 14:08:17,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:08:17,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:08:17,050 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_57220a80-95f8-44bf-8d55-10c9d21b0f8c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9072a9376e1e28de1ef4dc11b7134f6f175023b7 [2020-12-09 14:08:17,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:08:17,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:08:17,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:08:17,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:08:17,237 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:08:17,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2020-12-09 14:08:17,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan/data/e413a56cf/264d27ccd66548908576634ccd3468eb/FLAG0c4aee8c8 [2020-12-09 14:08:17,656 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:08:17,657 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2020-12-09 14:08:17,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan/data/e413a56cf/264d27ccd66548908576634ccd3468eb/FLAG0c4aee8c8 [2020-12-09 14:08:17,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan/data/e413a56cf/264d27ccd66548908576634ccd3468eb [2020-12-09 14:08:17,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:08:17,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:08:17,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:08:17,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:08:17,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:08:17,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:08:17" (1/1) ... [2020-12-09 14:08:17,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5566be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17, skipping insertion in model container [2020-12-09 14:08:17,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:08:17" (1/1) ... [2020-12-09 14:08:17,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:08:17,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:08:17,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:08:17,800 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:08:17,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:08:17,819 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:08:17,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17 WrapperNode [2020-12-09 14:08:17,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:08:17,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:08:17,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:08:17,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:08:17,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17" (1/1) ... [2020-12-09 14:08:17,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17" (1/1) ... [2020-12-09 14:08:17,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:08:17,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:08:17,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:08:17,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:08:17,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17" (1/1) ... [2020-12-09 14:08:17,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17" (1/1) ... [2020-12-09 14:08:17,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17" (1/1) ... [2020-12-09 14:08:17,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17" (1/1) ... [2020-12-09 14:08:17,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17" (1/1) ... [2020-12-09 14:08:17,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17" (1/1) ... [2020-12-09 14:08:17,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17" (1/1) ... [2020-12-09 14:08:17,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:08:17,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:08:17,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:08:17,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:08:17,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/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 [2020-12-09 14:08:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-12-09 14:08:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-12-09 14:08:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-12-09 14:08:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-12-09 14:08:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:08:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:08:18,050 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:08:18,051 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 14:08:18,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:18 BoogieIcfgContainer [2020-12-09 14:08:18,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:08:18,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:08:18,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:08:18,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:08:18,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:08:17" (1/3) ... [2020-12-09 14:08:18,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e18f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:08:18, skipping insertion in model container [2020-12-09 14:08:18,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:08:17" (2/3) ... [2020-12-09 14:08:18,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e18f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:08:18, skipping insertion in model container [2020-12-09 14:08:18,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:18" (3/3) ... [2020-12-09 14:08:18,058 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1b.c [2020-12-09 14:08:18,068 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:08:18,070 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-09 14:08:18,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-09 14:08:18,093 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:08:18,094 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 14:08:18,094 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:08:18,094 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:08:18,094 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:08:18,094 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:08:18,094 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:08:18,094 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:08:18,105 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-12-09 14:08:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 14:08:18,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:18,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 14:08:18,109 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]=== [2020-12-09 14:08:18,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:18,113 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2020-12-09 14:08:18,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:08:18,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975704834] [2020-12-09 14:08:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:08:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:18,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975704834] [2020-12-09 14:08:18,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:18,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:08:18,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641165862] [2020-12-09 14:08:18,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:08:18,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:08:18,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:08:18,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:08:18,245 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2020-12-09 14:08:18,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:18,329 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-09 14:08:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:08:18,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-12-09 14:08:18,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:18,337 INFO L225 Difference]: With dead ends: 62 [2020-12-09 14:08:18,338 INFO L226 Difference]: Without dead ends: 56 [2020-12-09 14:08:18,340 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 [2020-12-09 14:08:18,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-09 14:08:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-09 14:08:18,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 14:08:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-12-09 14:08:18,378 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2020-12-09 14:08:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:18,378 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-12-09 14:08:18,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:08:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-12-09 14:08:18,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 14:08:18,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:18,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 14:08:18,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 14:08:18,379 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]=== [2020-12-09 14:08:18,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:18,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2020-12-09 14:08:18,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:08:18,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586716269] [2020-12-09 14:08:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:08:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:18,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586716269] [2020-12-09 14:08:18,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:18,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:08:18,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146713699] [2020-12-09 14:08:18,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:08:18,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:08:18,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:08:18,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:08:18,397 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2020-12-09 14:08:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:18,415 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-12-09 14:08:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:08:18,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 14:08:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:18,416 INFO L225 Difference]: With dead ends: 52 [2020-12-09 14:08:18,416 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 14:08:18,417 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 [2020-12-09 14:08:18,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 14:08:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-12-09 14:08:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-09 14:08:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-12-09 14:08:18,430 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2020-12-09 14:08:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:18,430 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-12-09 14:08:18,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:08:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-12-09 14:08:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 14:08:18,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:18,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:18,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 14:08:18,431 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]=== [2020-12-09 14:08:18,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:18,432 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2020-12-09 14:08:18,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:08:18,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445139533] [2020-12-09 14:08:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:08:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:08:18,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445139533] [2020-12-09 14:08:18,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:18,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:08:18,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569778745] [2020-12-09 14:08:18,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 14:08:18,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:08:18,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 14:08:18,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-09 14:08:18,499 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2020-12-09 14:08:18,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:18,624 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-12-09 14:08:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 14:08:18,625 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-09 14:08:18,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:18,626 INFO L225 Difference]: With dead ends: 66 [2020-12-09 14:08:18,626 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 14:08:18,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-09 14:08:18,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 14:08:18,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-12-09 14:08:18,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-09 14:08:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-12-09 14:08:18,639 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2020-12-09 14:08:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:18,640 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-12-09 14:08:18,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 14:08:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-12-09 14:08:18,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 14:08:18,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:18,641 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:18,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 14:08:18,642 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]=== [2020-12-09 14:08:18,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:18,642 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2020-12-09 14:08:18,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:08:18,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089713188] [2020-12-09 14:08:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:08:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 14:08:18,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089713188] [2020-12-09 14:08:18,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:18,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:08:18,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968669097] [2020-12-09 14:08:18,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:08:18,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:08:18,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:08:18,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:08:18,673 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2020-12-09 14:08:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:18,683 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-12-09 14:08:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:08:18,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-09 14:08:18,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:18,684 INFO L225 Difference]: With dead ends: 61 [2020-12-09 14:08:18,685 INFO L226 Difference]: Without dead ends: 60 [2020-12-09 14:08:18,685 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 [2020-12-09 14:08:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-09 14:08:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-12-09 14:08:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 14:08:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-12-09 14:08:18,696 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2020-12-09 14:08:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:18,696 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-12-09 14:08:18,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:08:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-12-09 14:08:18,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 14:08:18,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:18,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:18,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 14:08:18,698 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]=== [2020-12-09 14:08:18,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:18,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2020-12-09 14:08:18,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:08:18,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822576277] [2020-12-09 14:08:18,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:08:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 14:08:18,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822576277] [2020-12-09 14:08:18,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:18,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:08:18,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050635561] [2020-12-09 14:08:18,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:08:18,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:08:18,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:08:18,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:08:18,740 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-12-09 14:08:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:18,777 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2020-12-09 14:08:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:08:18,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-09 14:08:18,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:18,779 INFO L225 Difference]: With dead ends: 93 [2020-12-09 14:08:18,779 INFO L226 Difference]: Without dead ends: 92 [2020-12-09 14:08:18,779 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 [2020-12-09 14:08:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-09 14:08:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2020-12-09 14:08:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-09 14:08:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-12-09 14:08:18,794 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2020-12-09 14:08:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:18,795 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-12-09 14:08:18,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:08:18,795 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-12-09 14:08:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 14:08:18,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:18,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:18,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 14:08:18,796 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]=== [2020-12-09 14:08:18,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:18,797 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2020-12-09 14:08:18,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:08:18,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483540681] [2020-12-09 14:08:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:08:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 14:08:18,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483540681] [2020-12-09 14:08:18,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:18,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:08:18,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928848000] [2020-12-09 14:08:18,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:08:18,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:08:18,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:08:18,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:08:18,836 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2020-12-09 14:08:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:18,873 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-12-09 14:08:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:08:18,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-09 14:08:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:18,875 INFO L225 Difference]: With dead ends: 93 [2020-12-09 14:08:18,875 INFO L226 Difference]: Without dead ends: 89 [2020-12-09 14:08:18,876 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 [2020-12-09 14:08:18,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-09 14:08:18,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-12-09 14:08:18,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-09 14:08:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2020-12-09 14:08:18,888 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2020-12-09 14:08:18,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:18,889 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2020-12-09 14:08:18,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:08:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2020-12-09 14:08:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 14:08:18,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:18,890 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] [2020-12-09 14:08:18,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 14:08:18,891 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]=== [2020-12-09 14:08:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:18,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102097, now seen corresponding path program 1 times [2020-12-09 14:08:18,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:08:18,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010528289] [2020-12-09 14:08:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:08:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 14:08:18,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010528289] [2020-12-09 14:08:18,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130253292] [2020-12-09 14:08:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/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 [2020-12-09 14:08:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:18,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 14:08:18,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:08:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 14:08:19,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:08:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 14:08:19,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 14:08:19,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2020-12-09 14:08:19,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255275663] [2020-12-09 14:08:19,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:08:19,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:08:19,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:08:19,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:08:19,079 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 5 states. [2020-12-09 14:08:19,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:19,130 INFO L93 Difference]: Finished difference Result 149 states and 199 transitions. [2020-12-09 14:08:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:08:19,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-12-09 14:08:19,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:19,132 INFO L225 Difference]: With dead ends: 149 [2020-12-09 14:08:19,132 INFO L226 Difference]: Without dead ends: 78 [2020-12-09 14:08:19,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:08:19,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-09 14:08:19,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-09 14:08:19,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-09 14:08:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2020-12-09 14:08:19,145 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 24 [2020-12-09 14:08:19,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:19,145 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2020-12-09 14:08:19,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:08:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2020-12-09 14:08:19,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-09 14:08:19,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:19,148 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] [2020-12-09 14:08:19,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-09 14:08:19,350 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]=== [2020-12-09 14:08:19,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:19,352 INFO L82 PathProgramCache]: Analyzing trace with hash 407346927, now seen corresponding path program 1 times [2020-12-09 14:08:19,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:08:19,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57020297] [2020-12-09 14:08:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:08:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 14:08:19,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57020297] [2020-12-09 14:08:19,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:19,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:08:19,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408131830] [2020-12-09 14:08:19,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:08:19,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:08:19,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:08:19,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:08:19,549 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 8 states. [2020-12-09 14:08:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:19,599 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-12-09 14:08:19,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 14:08:19,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-12-09 14:08:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:19,601 INFO L225 Difference]: With dead ends: 78 [2020-12-09 14:08:19,601 INFO L226 Difference]: Without dead ends: 76 [2020-12-09 14:08:19,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:08:19,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-09 14:08:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-09 14:08:19,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-09 14:08:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2020-12-09 14:08:19,610 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 60 [2020-12-09 14:08:19,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:19,611 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2020-12-09 14:08:19,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:08:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2020-12-09 14:08:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 14:08:19,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:08:19,616 INFO L422 BasicCegarLoop]: trace histogram [10, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-09 14:08:19,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 14:08:19,616 INFO L429 AbstractCegarLoop]: === Iteration 9 === [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]=== [2020-12-09 14:08:19,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:08:19,617 INFO L82 PathProgramCache]: Analyzing trace with hash -476747241, now seen corresponding path program 1 times [2020-12-09 14:08:19,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:08:19,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143051080] [2020-12-09 14:08:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:08:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:08:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-12-09 14:08:19,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143051080] [2020-12-09 14:08:19,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:08:19,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:08:19,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040509960] [2020-12-09 14:08:19,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:08:19,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:08:19,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:08:19,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:08:19,733 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand 8 states. [2020-12-09 14:08:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:08:19,770 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2020-12-09 14:08:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 14:08:19,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-09 14:08:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:08:19,771 INFO L225 Difference]: With dead ends: 76 [2020-12-09 14:08:19,772 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 14:08:19,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:08:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 14:08:19,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 14:08:19,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 14:08:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 14:08:19,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2020-12-09 14:08:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:08:19,773 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 14:08:19,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:08:19,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 14:08:19,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 14:08:19,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 14:08:19,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 14:08:19,904 INFO L262 CegarLoopResult]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2020-12-09 14:08:19,904 INFO L258 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (or (not (<= |f_#in~x| 2147483645)) (and (<= f_~x 2147483645) (<= 1 f_~x))) [2020-12-09 14:08:19,904 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 14:08:19,904 INFO L262 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-12-09 14:08:19,904 INFO L262 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-12-09 14:08:19,904 INFO L262 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-12-09 14:08:19,905 INFO L258 CegarLoopResult]: At program point L14-4(line 14) the Hoare annotation is: (or (not (<= |f_#in~x| 2147483645)) (and (<= f_~x 2147483645) (<= |f_#t~ret0| 0) (<= 1 f_~x) (<= 0 |f_#t~ret0|))) [2020-12-09 14:08:19,905 INFO L262 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-12-09 14:08:19,905 INFO L262 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-09 14:08:19,905 INFO L262 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-09 14:08:19,905 INFO L262 CegarLoopResult]: For program point L14-6(line 14) no Hoare annotation was computed. [2020-12-09 14:08:19,905 INFO L262 CegarLoopResult]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2020-12-09 14:08:19,905 INFO L262 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2020-12-09 14:08:19,905 INFO L265 CegarLoopResult]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2020-12-09 14:08:19,905 INFO L262 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-09 14:08:19,905 INFO L262 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-12-09 14:08:19,905 INFO L262 CegarLoopResult]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2020-12-09 14:08:19,906 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,906 INFO L262 CegarLoopResult]: For program point L19(lines 19 20) no Hoare annotation was computed. [2020-12-09 14:08:19,906 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,906 INFO L258 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (or (not (<= |g_#in~x| 2147483645)) (and (<= 1 g_~x) (<= g_~x 2147483645))) (or (and (<= |g_#in~x| g_~x) (<= g_~x 2147483647)) (not (<= |g_#in~x| 2147483647)))) [2020-12-09 14:08:19,906 INFO L262 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,906 INFO L262 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,906 INFO L262 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,906 INFO L258 CegarLoopResult]: At program point L20-6(line 20) the Hoare annotation is: (and (or (and (<= |g_#in~x| g_~x) (<= 0 |g_#t~ret2|) (<= g_~x 2147483647) (<= |g_#t~ret2| 0)) (not (<= |g_#in~x| 2147483647))) (or (not (<= |g_#in~x| 2147483645)) (and (<= 1 g_~x) (<= g_~x 2147483645)))) [2020-12-09 14:08:19,906 INFO L262 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,906 INFO L262 CegarLoopResult]: For program point L20-8(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,907 INFO L262 CegarLoopResult]: For program point L20-9(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,907 INFO L262 CegarLoopResult]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,907 INFO L262 CegarLoopResult]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2020-12-09 14:08:19,907 INFO L262 CegarLoopResult]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,907 INFO L265 CegarLoopResult]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2020-12-09 14:08:19,907 INFO L262 CegarLoopResult]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,907 INFO L262 CegarLoopResult]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,907 INFO L262 CegarLoopResult]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,907 INFO L262 CegarLoopResult]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 14:08:19,907 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 14:08:19,908 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 14:08:19,908 INFO L258 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-12-09 14:08:19,908 INFO L262 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-12-09 14:08:19,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:08:19 BoogieIcfgContainer [2020-12-09 14:08:19,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:08:19,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:08:19,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:08:19,913 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:08:19,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:08:18" (3/4) ... [2020-12-09 14:08:19,916 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 14:08:19,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2020-12-09 14:08:19,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2020-12-09 14:08:19,925 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 14:08:19,925 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 14:08:19,926 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 14:08:19,963 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_57220a80-95f8-44bf-8d55-10c9d21b0f8c/bin/utaipan/witness.graphml [2020-12-09 14:08:19,963 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:08:19,964 INFO L168 Benchmark]: Toolchain (without parser) took 2287.74 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 83.0 MB in the beginning and 114.5 MB in the end (delta: -31.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:08:19,965 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 119.5 MB. Free memory is still 99.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:08:19,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.97 ms. Allocated memory is still 119.5 MB. Free memory was 82.7 MB in the beginning and 97.3 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 14:08:19,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.86 ms. Allocated memory is still 119.5 MB. Free memory was 97.3 MB in the beginning and 95.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:08:19,966 INFO L168 Benchmark]: Boogie Preprocessor took 13.21 ms. Allocated memory is still 119.5 MB. Free memory was 95.7 MB in the beginning and 95.2 MB in the end (delta: 510.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:08:19,966 INFO L168 Benchmark]: RCFGBuilder took 196.89 ms. Allocated memory is still 119.5 MB. Free memory was 95.2 MB in the beginning and 81.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 14:08:19,967 INFO L168 Benchmark]: TraceAbstraction took 1858.99 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 81.5 MB in the beginning and 117.7 MB in the end (delta: -36.1 MB). Peak memory consumption was 67.8 MB. Max. memory is 16.1 GB. [2020-12-09 14:08:19,967 INFO L168 Benchmark]: Witness Printer took 50.19 ms. Allocated memory is still 144.7 MB. Free memory was 117.7 MB in the beginning and 114.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:08:19,969 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 119.5 MB. Free memory is still 99.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 142.97 ms. Allocated memory is still 119.5 MB. Free memory was 82.7 MB in the beginning and 97.3 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 20.86 ms. Allocated memory is still 119.5 MB. Free memory was 97.3 MB in the beginning and 95.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.21 ms. Allocated memory is still 119.5 MB. Free memory was 95.7 MB in the beginning and 95.2 MB in the end (delta: 510.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 196.89 ms. Allocated memory is still 119.5 MB. Free memory was 95.2 MB in the beginning and 81.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1858.99 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 81.5 MB in the beginning and 117.7 MB in the end (delta: -36.1 MB). Peak memory consumption was 67.8 MB. Max. memory is 16.1 GB. * Witness Printer took 50.19 ms. Allocated memory is still 144.7 MB. Free memory was 117.7 MB in the beginning and 114.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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: 1.6s, OverallIterations: 9, TraceHistogramMax: 10, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 280 SDtfs, 184 SDslu, 740 SDs, 0 SdLazy, 365 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s 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, 9 MinimizatonAttempts, 39 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 64 PreInvPairs, 76 NumberOfFragments, 91 HoareAnnotationTreeSize, 64 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 303 NumberOfCodeBlocks, 303 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 34590 SizeOfPredicates, 3 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 343/349 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...