./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/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-a4ecdab [2020-11-22 12:47:32,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:47:32,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:47:32,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:47:32,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:47:32,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:47:32,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:47:32,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:47:32,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:47:32,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:47:32,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:47:32,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:47:32,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:47:32,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:47:32,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:47:32,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:47:32,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:47:32,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:47:32,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:47:32,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:47:32,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:47:32,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:47:32,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:47:32,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:47:32,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:47:32,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:47:32,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:47:32,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:47:32,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:47:32,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:47:32,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:47:32,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:47:32,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:47:32,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:47:32,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:47:32,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:47:32,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:47:32,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:47:32,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:47:32,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:47:32,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:47:32,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-22 12:47:32,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:47:32,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:47:32,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:47:32,195 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:47:32,195 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:47:32,195 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:47:32,196 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:47:32,196 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:47:32,196 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:47:32,197 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:47:32,197 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:47:32,197 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:47:32,197 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:47:32,198 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:47:32,198 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:47:32,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:47:32,199 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:47:32,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:47:32,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:47:32,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:47:32,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:47:32,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:47:32,200 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 12:47:32,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:47:32,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:47:32,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:47:32,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:47:32,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:47:32,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:47:32,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:47:32,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:47:32,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:47:32,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:47:32,203 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:47:32,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:47:32,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:47:32,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:47:32,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:47:32,205 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_af50b99f-70c7-403b-8c23-a603cb00c733/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9072a9376e1e28de1ef4dc11b7134f6f175023b7 [2020-11-22 12:47:32,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:47:32,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:47:32,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:47:32,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:47:32,543 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:47:32,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2020-11-22 12:47:32,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan/data/af8f62f74/19bb0206381a4708b353c4084cfb35ed/FLAG41bd4a40d [2020-11-22 12:47:33,156 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:47:33,157 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2020-11-22 12:47:33,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan/data/af8f62f74/19bb0206381a4708b353c4084cfb35ed/FLAG41bd4a40d [2020-11-22 12:47:33,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan/data/af8f62f74/19bb0206381a4708b353c4084cfb35ed [2020-11-22 12:47:33,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:47:33,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:47:33,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:33,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:47:33,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:47:33,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:33" (1/1) ... [2020-11-22 12:47:33,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e9e9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33, skipping insertion in model container [2020-11-22 12:47:33,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:33" (1/1) ... [2020-11-22 12:47:33,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:47:33,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:47:33,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:33,794 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:47:33,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:33,822 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:47:33,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33 WrapperNode [2020-11-22 12:47:33,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:33,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:47:33,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:47:33,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:47:33,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33" (1/1) ... [2020-11-22 12:47:33,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33" (1/1) ... [2020-11-22 12:47:33,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:47:33,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:47:33,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:47:33,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:47:33,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33" (1/1) ... [2020-11-22 12:47:33,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33" (1/1) ... [2020-11-22 12:47:33,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33" (1/1) ... [2020-11-22 12:47:33,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33" (1/1) ... [2020-11-22 12:47:33,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33" (1/1) ... [2020-11-22 12:47:33,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33" (1/1) ... [2020-11-22 12:47:33,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33" (1/1) ... [2020-11-22 12:47:33,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:47:33,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:47:33,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:47:33,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:47:33,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/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 12:47:33,968 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-11-22 12:47:33,968 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-11-22 12:47:33,968 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-11-22 12:47:33,968 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-11-22 12:47:33,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:47:33,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:47:34,400 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:47:34,400 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-22 12:47:34,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:34 BoogieIcfgContainer [2020-11-22 12:47:34,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:47:34,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:47:34,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:47:34,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:47:34,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:47:33" (1/3) ... [2020-11-22 12:47:34,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b36365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:47:34, skipping insertion in model container [2020-11-22 12:47:34,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33" (2/3) ... [2020-11-22 12:47:34,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b36365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:47:34, skipping insertion in model container [2020-11-22 12:47:34,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:34" (3/3) ... [2020-11-22 12:47:34,419 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1b.c [2020-11-22 12:47:34,432 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:47:34,436 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-22 12:47:34,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-22 12:47:34,482 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:47:34,482 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:47:34,482 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:47:34,482 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:47:34,482 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:47:34,483 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:47:34,483 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:47:34,483 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:47:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-22 12:47:34,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:47:34,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:34,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:47:34,514 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 12:47:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:34,528 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2020-11-22 12:47:34,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:34,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219498792] [2020-11-22 12:47:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:34,720 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 12:47:34,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219498792] [2020-11-22 12:47:34,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:34,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:47:34,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920220390] [2020-11-22 12:47:34,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:47:34,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:34,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:47:34,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:47:34,754 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2020-11-22 12:47:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:34,939 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-11-22 12:47:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:47:34,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-22 12:47:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:34,959 INFO L225 Difference]: With dead ends: 62 [2020-11-22 12:47:34,960 INFO L226 Difference]: Without dead ends: 56 [2020-11-22 12:47:34,963 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 12:47:34,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-22 12:47:35,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-11-22 12:47:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-22 12:47:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-11-22 12:47:35,037 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2020-11-22 12:47:35,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:35,037 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-11-22 12:47:35,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:47:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-11-22 12:47:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:47:35,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:35,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:47:35,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:47:35,039 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 12:47:35,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:35,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2020-11-22 12:47:35,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:35,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633373937] [2020-11-22 12:47:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:35,069 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 12:47:35,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633373937] [2020-11-22 12:47:35,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:35,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:47:35,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223110176] [2020-11-22 12:47:35,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:47:35,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:35,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:47:35,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:35,073 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2020-11-22 12:47:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:35,112 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-11-22 12:47:35,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:47:35,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-22 12:47:35,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:35,117 INFO L225 Difference]: With dead ends: 52 [2020-11-22 12:47:35,117 INFO L226 Difference]: Without dead ends: 50 [2020-11-22 12:47:35,118 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 12:47:35,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-22 12:47:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-11-22 12:47:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-22 12:47:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-11-22 12:47:35,142 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2020-11-22 12:47:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:35,143 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-11-22 12:47:35,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:47:35,143 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-11-22 12:47:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:47:35,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:35,144 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:35,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:47:35,145 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 12:47:35,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:35,145 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2020-11-22 12:47:35,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:35,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967483787] [2020-11-22 12:47:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:35,345 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 12:47:35,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967483787] [2020-11-22 12:47:35,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:35,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-22 12:47:35,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400685056] [2020-11-22 12:47:35,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 12:47:35,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:35,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 12:47:35,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:47:35,348 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2020-11-22 12:47:35,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:35,829 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-11-22 12:47:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-22 12:47:35,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-11-22 12:47:35,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:35,832 INFO L225 Difference]: With dead ends: 66 [2020-11-22 12:47:35,832 INFO L226 Difference]: Without dead ends: 63 [2020-11-22 12:47:35,833 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 12:47:35,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-22 12:47:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-11-22 12:47:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-22 12:47:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-11-22 12:47:35,857 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2020-11-22 12:47:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:35,857 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-11-22 12:47:35,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 12:47:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-11-22 12:47:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:47:35,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:35,860 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:35,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:47:35,861 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 12:47:35,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:35,864 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2020-11-22 12:47:35,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:35,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044889092] [2020-11-22 12:47:35,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:35,899 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 12:47:35,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044889092] [2020-11-22 12:47:35,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:35,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:47:35,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247496941] [2020-11-22 12:47:35,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:47:35,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:35,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:47:35,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:35,902 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2020-11-22 12:47:35,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:35,925 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-11-22 12:47:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:47:35,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-22 12:47:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:35,930 INFO L225 Difference]: With dead ends: 61 [2020-11-22 12:47:35,932 INFO L226 Difference]: Without dead ends: 60 [2020-11-22 12:47:35,933 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 12:47:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-22 12:47:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-11-22 12:47:35,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-22 12:47:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-11-22 12:47:35,954 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2020-11-22 12:47:35,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:35,955 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-11-22 12:47:35,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:47:35,955 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-11-22 12:47:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 12:47:35,957 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:35,958 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 12:47:35,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:47:35,960 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 12:47:35,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:35,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2020-11-22 12:47:35,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:35,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726530002] [2020-11-22 12:47:35,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:36,050 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 12:47:36,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726530002] [2020-11-22 12:47:36,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:36,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:47:36,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290524531] [2020-11-22 12:47:36,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:47:36,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:36,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:47:36,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:47:36,053 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-11-22 12:47:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:36,137 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2020-11-22 12:47:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:47:36,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-22 12:47:36,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:36,141 INFO L225 Difference]: With dead ends: 93 [2020-11-22 12:47:36,142 INFO L226 Difference]: Without dead ends: 92 [2020-11-22 12:47:36,142 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 12:47:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-22 12:47:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2020-11-22 12:47:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-22 12:47:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-11-22 12:47:36,177 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2020-11-22 12:47:36,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:36,177 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-11-22 12:47:36,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:47:36,178 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-11-22 12:47:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 12:47:36,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:36,180 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 12:47:36,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:47:36,181 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 12:47:36,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:36,182 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2020-11-22 12:47:36,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:36,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501257907] [2020-11-22 12:47:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:36,273 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 12:47:36,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501257907] [2020-11-22 12:47:36,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:36,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:47:36,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871671825] [2020-11-22 12:47:36,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:47:36,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:36,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:47:36,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:47:36,278 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2020-11-22 12:47:36,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:36,418 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-11-22 12:47:36,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:47:36,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-22 12:47:36,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:36,422 INFO L225 Difference]: With dead ends: 93 [2020-11-22 12:47:36,422 INFO L226 Difference]: Without dead ends: 89 [2020-11-22 12:47:36,423 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 12:47:36,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-22 12:47:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-11-22 12:47:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-22 12:47:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2020-11-22 12:47:36,442 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2020-11-22 12:47:36,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:36,442 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2020-11-22 12:47:36,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:47:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2020-11-22 12:47:36,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 12:47:36,444 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:36,444 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 12:47:36,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:47:36,445 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 12:47:36,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:36,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102097, now seen corresponding path program 1 times [2020-11-22 12:47:36,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:36,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511988351] [2020-11-22 12:47:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:36,491 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 12:47:36,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511988351] [2020-11-22 12:47:36,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691091693] [2020-11-22 12:47:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/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 12:47:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:36,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:47:36,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:47:36,643 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 12:47:36,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:47:36,787 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 12:47:36,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:47:36,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2020-11-22 12:47:36,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299151268] [2020-11-22 12:47:36,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:47:36,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:36,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:47:36,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:47:36,790 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 5 states. [2020-11-22 12:47:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:36,894 INFO L93 Difference]: Finished difference Result 149 states and 199 transitions. [2020-11-22 12:47:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:47:36,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-22 12:47:36,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:36,896 INFO L225 Difference]: With dead ends: 149 [2020-11-22 12:47:36,896 INFO L226 Difference]: Without dead ends: 78 [2020-11-22 12:47:36,899 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 12:47:36,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-22 12:47:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-22 12:47:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-22 12:47:36,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2020-11-22 12:47:36,928 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 24 [2020-11-22 12:47:36,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:36,929 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2020-11-22 12:47:36,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:47:36,929 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2020-11-22 12:47:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-22 12:47:36,937 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:36,937 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 12:47:37,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-22 12:47:37,138 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 12:47:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:37,139 INFO L82 PathProgramCache]: Analyzing trace with hash 407346927, now seen corresponding path program 1 times [2020-11-22 12:47:37,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:37,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571739618] [2020-11-22 12:47:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-11-22 12:47:37,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571739618] [2020-11-22 12:47:37,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:37,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-22 12:47:37,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415022773] [2020-11-22 12:47:37,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 12:47:37,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:37,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 12:47:37,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:47:37,268 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 8 states. [2020-11-22 12:47:37,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:37,375 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-11-22 12:47:37,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:47:37,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-11-22 12:47:37,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:37,378 INFO L225 Difference]: With dead ends: 78 [2020-11-22 12:47:37,378 INFO L226 Difference]: Without dead ends: 76 [2020-11-22 12:47:37,379 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 [2020-11-22 12:47:37,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-22 12:47:37,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-11-22 12:47:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-22 12:47:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2020-11-22 12:47:37,395 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 60 [2020-11-22 12:47:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:37,396 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2020-11-22 12:47:37,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 12:47:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2020-11-22 12:47:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-22 12:47:37,400 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:37,400 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] [2020-11-22 12:47:37,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:47:37,400 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]=== [2020-11-22 12:47:37,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:37,401 INFO L82 PathProgramCache]: Analyzing trace with hash -476747241, now seen corresponding path program 1 times [2020-11-22 12:47:37,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:47:37,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059472260] [2020-11-22 12:47:37,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:47:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-11-22 12:47:37,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059472260] [2020-11-22 12:47:37,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:37,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-22 12:47:37,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155738722] [2020-11-22 12:47:37,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 12:47:37,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:47:37,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 12:47:37,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:47:37,710 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand 8 states. [2020-11-22 12:47:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:37,808 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2020-11-22 12:47:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:47:37,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-11-22 12:47:37,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:37,810 INFO L225 Difference]: With dead ends: 76 [2020-11-22 12:47:37,810 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:47:37,812 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 [2020-11-22 12:47:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:47:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:47:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:47:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:47:37,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2020-11-22 12:47:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:37,814 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:47:37,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 12:47:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:47:37,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:47:37,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:47:37,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:47:38,119 INFO L274 CegarLoopResult]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2020-11-22 12:47:38,119 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (or (not (<= |f_#in~x| 2147483645)) (and (<= f_~x 2147483645) (<= 1 f_~x))) [2020-11-22 12:47:38,120 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-22 12:47:38,120 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-11-22 12:47:38,120 INFO L274 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-11-22 12:47:38,120 INFO L274 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-11-22 12:47:38,120 INFO L270 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|))) [2020-11-22 12:47:38,120 INFO L274 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-11-22 12:47:38,120 INFO L274 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-22 12:47:38,121 INFO L274 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-22 12:47:38,121 INFO L274 CegarLoopResult]: For program point L14-6(line 14) no Hoare annotation was computed. [2020-11-22 12:47:38,121 INFO L274 CegarLoopResult]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2020-11-22 12:47:38,121 INFO L274 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2020-11-22 12:47:38,121 INFO L277 CegarLoopResult]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2020-11-22 12:47:38,121 INFO L274 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-22 12:47:38,121 INFO L274 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-22 12:47:38,121 INFO L274 CegarLoopResult]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2020-11-22 12:47:38,122 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,122 INFO L274 CegarLoopResult]: For program point L19(lines 19 20) no Hoare annotation was computed. [2020-11-22 12:47:38,122 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,122 INFO L270 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)))) [2020-11-22 12:47:38,122 INFO L274 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,122 INFO L274 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,122 INFO L274 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,123 INFO L270 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)))) [2020-11-22 12:47:38,123 INFO L274 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,123 INFO L274 CegarLoopResult]: For program point L20-8(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,123 INFO L274 CegarLoopResult]: For program point L20-9(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,123 INFO L274 CegarLoopResult]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,123 INFO L274 CegarLoopResult]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2020-11-22 12:47:38,123 INFO L274 CegarLoopResult]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,123 INFO L277 CegarLoopResult]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2020-11-22 12:47:38,124 INFO L274 CegarLoopResult]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,124 INFO L274 CegarLoopResult]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,124 INFO L274 CegarLoopResult]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,124 INFO L274 CegarLoopResult]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-22 12:47:38,124 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:47:38,124 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:47:38,124 INFO L270 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-22 12:47:38,124 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-22 12:47:38,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:47:38 BoogieIcfgContainer [2020-11-22 12:47:38,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:47:38,136 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:47:38,136 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:47:38,136 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:47:38,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:34" (3/4) ... [2020-11-22 12:47:38,140 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:47:38,145 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2020-11-22 12:47:38,145 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2020-11-22 12:47:38,155 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 12:47:38,155 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:47:38,155 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:47:38,209 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_af50b99f-70c7-403b-8c23-a603cb00c733/bin/utaipan/witness.graphml [2020-11-22 12:47:38,209 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:47:38,211 INFO L168 Benchmark]: Toolchain (without parser) took 4677.27 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 91.8 MB in the beginning and 81.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:38,211 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:38,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.16 ms. Allocated memory is still 123.7 MB. Free memory was 91.5 MB in the beginning and 102.5 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:38,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.42 ms. Allocated memory is still 123.7 MB. Free memory was 102.5 MB in the beginning and 101.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:38,213 INFO L168 Benchmark]: Boogie Preprocessor took 17.41 ms. Allocated memory is still 123.7 MB. Free memory was 101.0 MB in the beginning and 100.4 MB in the end (delta: 592.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:38,213 INFO L168 Benchmark]: RCFGBuilder took 529.78 ms. Allocated memory is still 123.7 MB. Free memory was 100.4 MB in the beginning and 87.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:38,214 INFO L168 Benchmark]: TraceAbstraction took 3727.38 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 86.4 MB in the beginning and 85.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:38,214 INFO L168 Benchmark]: Witness Printer took 73.56 ms. Allocated memory is still 148.9 MB. Free memory was 85.0 MB in the beginning and 81.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:38,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.16 ms. Allocated memory is still 123.7 MB. Free memory was 91.5 MB in the beginning and 102.5 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.42 ms. Allocated memory is still 123.7 MB. Free memory was 102.5 MB in the beginning and 101.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.41 ms. Allocated memory is still 123.7 MB. Free memory was 101.0 MB in the beginning and 100.4 MB in the end (delta: 592.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 529.78 ms. Allocated memory is still 123.7 MB. Free memory was 100.4 MB in the beginning and 87.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3727.38 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 86.4 MB in the beginning and 85.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. * Witness Printer took 73.56 ms. Allocated memory is still 148.9 MB. Free memory was 85.0 MB in the beginning and 81.9 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: 3.3s, OverallIterations: 9, TraceHistogramMax: 10, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 280 SDtfs, 184 SDslu, 740 SDs, 0 SdLazy, 365 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 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: 0.2s 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, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s 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...