./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_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI --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 [2021-10-11 02:28:32,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:32,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:32,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:32,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:32,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:32,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:32,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:32,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:32,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:32,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:32,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:32,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:32,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:32,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:32,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:32,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:32,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:32,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:32,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:32,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:32,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:32,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:32,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:32,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:32,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:32,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:32,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:32,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:32,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:32,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:32,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:32,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:32,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:32,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:32,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:32,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:32,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:32,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:32,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:32,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:32,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:28:32,273 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:32,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:32,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:32,278 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:32,278 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:32,278 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:32,279 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:32,279 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:32,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:32,280 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:32,281 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:32,281 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:32,282 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:32,282 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:32,282 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:32,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:32,283 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:28:32,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:32,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:32,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:32,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:32,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:32,285 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:28:32,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:32,286 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:32,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:32,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:32,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:32,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:32,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:32,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:32,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:32,290 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:32,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:32,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:32,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:32,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:32,291 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_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9072a9376e1e28de1ef4dc11b7134f6f175023b7 [2021-10-11 02:28:32,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:32,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:32,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:32,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:32,627 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:32,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2021-10-11 02:28:32,714 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/data/e64f3f211/3ee30d58ac184c079c016b87e235315f/FLAGf580b09f6 [2021-10-11 02:28:33,197 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:33,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2021-10-11 02:28:33,212 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/data/e64f3f211/3ee30d58ac184c079c016b87e235315f/FLAGf580b09f6 [2021-10-11 02:28:33,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/data/e64f3f211/3ee30d58ac184c079c016b87e235315f [2021-10-11 02:28:33,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:33,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:33,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:33,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:33,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:33,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:33" (1/1) ... [2021-10-11 02:28:33,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3c2b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33, skipping insertion in model container [2021-10-11 02:28:33,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:33" (1/1) ... [2021-10-11 02:28:33,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:33,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:33,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:33,838 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:33,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:33,867 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:33,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33 WrapperNode [2021-10-11 02:28:33,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:33,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:33,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:33,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:33,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33" (1/1) ... [2021-10-11 02:28:33,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33" (1/1) ... [2021-10-11 02:28:33,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:33,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:33,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:33,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:33,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33" (1/1) ... [2021-10-11 02:28:33,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33" (1/1) ... [2021-10-11 02:28:33,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33" (1/1) ... [2021-10-11 02:28:33,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33" (1/1) ... [2021-10-11 02:28:33,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33" (1/1) ... [2021-10-11 02:28:33,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33" (1/1) ... [2021-10-11 02:28:33,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33" (1/1) ... [2021-10-11 02:28:33,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:33,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:33,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:33,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:33,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:33,985 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-11 02:28:33,985 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-11 02:28:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-11 02:28:33,986 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-11 02:28:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:33,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:34,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:34,220 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:28:34,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:34 BoogieIcfgContainer [2021-10-11 02:28:34,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:34,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:34,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:34,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:34,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:33" (1/3) ... [2021-10-11 02:28:34,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d79add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:34, skipping insertion in model container [2021-10-11 02:28:34,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:33" (2/3) ... [2021-10-11 02:28:34,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d79add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:34, skipping insertion in model container [2021-10-11 02:28:34,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:34" (3/3) ... [2021-10-11 02:28:34,233 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1b.c [2021-10-11 02:28:34,248 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:34,251 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2021-10-11 02:28:34,263 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-11 02:28:34,287 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:34,287 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:34,288 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:34,288 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:34,288 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:34,288 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:34,288 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:34,289 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:34,307 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-10-11 02:28:34,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:28:34,312 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:34,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:28:34,314 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]=== [2021-10-11 02:28:34,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:34,320 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2021-10-11 02:28:34,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:34,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876148762] [2021-10-11 02:28:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:34,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876148762] [2021-10-11 02:28:34,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:34,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:34,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630237136] [2021-10-11 02:28:34,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:34,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:34,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:34,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:34,611 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2021-10-11 02:28:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:34,800 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2021-10-11 02:28:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:28:34,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2021-10-11 02:28:34,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:34,814 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:28:34,814 INFO L226 Difference]: Without dead ends: 56 [2021-10-11 02:28:34,819 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 [2021-10-11 02:28:34,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-11 02:28:34,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-10-11 02:28:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-10-11 02:28:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-10-11 02:28:34,881 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2021-10-11 02:28:34,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:34,881 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-11 02:28:34,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2021-10-11 02:28:34,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:28:34,882 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:34,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:28:34,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:34,886 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]=== [2021-10-11 02:28:34,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:34,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2021-10-11 02:28:34,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:34,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116184290] [2021-10-11 02:28:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:34,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116184290] [2021-10-11 02:28:34,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:34,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:34,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485114713] [2021-10-11 02:28:34,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:34,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:34,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:34,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:34,930 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2021-10-11 02:28:34,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:34,960 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-10-11 02:28:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:34,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:28:34,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:34,963 INFO L225 Difference]: With dead ends: 52 [2021-10-11 02:28:34,963 INFO L226 Difference]: Without dead ends: 50 [2021-10-11 02:28:34,964 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 [2021-10-11 02:28:34,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-11 02:28:34,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-10-11 02:28:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-10-11 02:28:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-10-11 02:28:34,974 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2021-10-11 02:28:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:34,974 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-10-11 02:28:34,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-10-11 02:28:34,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:28:34,979 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:34,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:34,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:34,980 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]=== [2021-10-11 02:28:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:34,983 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2021-10-11 02:28:34,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:34,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551974217] [2021-10-11 02:28:34,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:35,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551974217] [2021-10-11 02:28:35,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:35,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:28:35,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708082431] [2021-10-11 02:28:35,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:28:35,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:35,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:28:35,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:28:35,166 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2021-10-11 02:28:35,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:35,393 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-10-11 02:28:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:28:35,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2021-10-11 02:28:35,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:35,395 INFO L225 Difference]: With dead ends: 66 [2021-10-11 02:28:35,396 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 02:28:35,396 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 [2021-10-11 02:28:35,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 02:28:35,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-10-11 02:28:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-10-11 02:28:35,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2021-10-11 02:28:35,426 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2021-10-11 02:28:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:35,427 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2021-10-11 02:28:35,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:28:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2021-10-11 02:28:35,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:28:35,431 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:35,431 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:35,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:28:35,432 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]=== [2021-10-11 02:28:35,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:35,433 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2021-10-11 02:28:35,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:35,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428508715] [2021-10-11 02:28:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:28:35,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428508715] [2021-10-11 02:28:35,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:35,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:35,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007204530] [2021-10-11 02:28:35,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:35,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:35,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:35,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:35,490 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2021-10-11 02:28:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:35,516 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2021-10-11 02:28:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:35,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-10-11 02:28:35,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:35,518 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:28:35,518 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 02:28:35,519 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 [2021-10-11 02:28:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 02:28:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-10-11 02:28:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-10-11 02:28:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-11 02:28:35,530 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2021-10-11 02:28:35,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:35,530 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-11 02:28:35,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:35,530 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-11 02:28:35,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:28:35,531 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:35,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:35,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:28:35,532 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]=== [2021-10-11 02:28:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:35,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2021-10-11 02:28:35,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:35,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336293381] [2021-10-11 02:28:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:28:35,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336293381] [2021-10-11 02:28:35,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:35,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:35,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576066876] [2021-10-11 02:28:35,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:35,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:35,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:35,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:35,577 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2021-10-11 02:28:35,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:35,642 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2021-10-11 02:28:35,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:28:35,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-10-11 02:28:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:35,645 INFO L225 Difference]: With dead ends: 93 [2021-10-11 02:28:35,646 INFO L226 Difference]: Without dead ends: 92 [2021-10-11 02:28:35,646 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 [2021-10-11 02:28:35,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-11 02:28:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2021-10-11 02:28:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-10-11 02:28:35,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2021-10-11 02:28:35,660 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2021-10-11 02:28:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:35,681 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2021-10-11 02:28:35,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2021-10-11 02:28:35,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:28:35,684 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:35,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:35,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:28:35,685 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]=== [2021-10-11 02:28:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:35,686 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2021-10-11 02:28:35,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:35,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674842042] [2021-10-11 02:28:35,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:28:35,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674842042] [2021-10-11 02:28:35,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:35,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:35,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141360659] [2021-10-11 02:28:35,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:35,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:35,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:35,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:35,738 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2021-10-11 02:28:35,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:35,832 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2021-10-11 02:28:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:28:35,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-10-11 02:28:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:35,838 INFO L225 Difference]: With dead ends: 93 [2021-10-11 02:28:35,838 INFO L226 Difference]: Without dead ends: 89 [2021-10-11 02:28:35,839 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 [2021-10-11 02:28:35,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-11 02:28:35,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2021-10-11 02:28:35,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-10-11 02:28:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2021-10-11 02:28:35,851 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2021-10-11 02:28:35,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:35,852 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2021-10-11 02:28:35,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:35,852 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2021-10-11 02:28:35,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:28:35,853 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:35,853 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] [2021-10-11 02:28:35,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:28:35,854 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]=== [2021-10-11 02:28:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:35,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102097, now seen corresponding path program 1 times [2021-10-11 02:28:35,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:35,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950670617] [2021-10-11 02:28:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:28:35,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950670617] [2021-10-11 02:28:35,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073554220] [2021-10-11 02:28:35,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:35,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:35,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:28:36,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:28:36,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:28:36,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2021-10-11 02:28:36,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999212491] [2021-10-11 02:28:36,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:36,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:36,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:36,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:36,183 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 5 states. [2021-10-11 02:28:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:36,265 INFO L93 Difference]: Finished difference Result 149 states and 199 transitions. [2021-10-11 02:28:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:36,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2021-10-11 02:28:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:36,269 INFO L225 Difference]: With dead ends: 149 [2021-10-11 02:28:36,269 INFO L226 Difference]: Without dead ends: 78 [2021-10-11 02:28:36,275 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 [2021-10-11 02:28:36,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-11 02:28:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-11 02:28:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-10-11 02:28:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2021-10-11 02:28:36,295 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 24 [2021-10-11 02:28:36,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:36,295 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2021-10-11 02:28:36,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:36,295 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2021-10-11 02:28:36,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-11 02:28:36,298 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:36,298 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] [2021-10-11 02:28:36,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-11 02:28:36,515 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]=== [2021-10-11 02:28:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:36,515 INFO L82 PathProgramCache]: Analyzing trace with hash 407346927, now seen corresponding path program 1 times [2021-10-11 02:28:36,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:36,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501021569] [2021-10-11 02:28:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-11 02:28:36,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501021569] [2021-10-11 02:28:36,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:36,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:28:36,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631238833] [2021-10-11 02:28:36,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:28:36,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:36,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:28:36,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:28:36,646 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 8 states. [2021-10-11 02:28:36,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:36,710 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2021-10-11 02:28:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:28:36,711 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2021-10-11 02:28:36,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:36,712 INFO L225 Difference]: With dead ends: 78 [2021-10-11 02:28:36,712 INFO L226 Difference]: Without dead ends: 76 [2021-10-11 02:28:36,713 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 [2021-10-11 02:28:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-11 02:28:36,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-11 02:28:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-10-11 02:28:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2021-10-11 02:28:36,722 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 60 [2021-10-11 02:28:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:36,723 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2021-10-11 02:28:36,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:28:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2021-10-11 02:28:36,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:28:36,727 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:36,727 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] [2021-10-11 02:28:36,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:28:36,728 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]=== [2021-10-11 02:28:36,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:36,728 INFO L82 PathProgramCache]: Analyzing trace with hash -476747241, now seen corresponding path program 1 times [2021-10-11 02:28:36,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:36,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038900774] [2021-10-11 02:28:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:36,930 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-10-11 02:28:36,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038900774] [2021-10-11 02:28:36,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:36,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:28:36,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625469116] [2021-10-11 02:28:36,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:28:36,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:36,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:28:36,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:28:36,935 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand 8 states. [2021-10-11 02:28:36,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:36,991 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2021-10-11 02:28:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:28:36,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2021-10-11 02:28:36,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:36,993 INFO L225 Difference]: With dead ends: 76 [2021-10-11 02:28:36,993 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:36,994 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 [2021-10-11 02:28:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:36,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2021-10-11 02:28:36,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:36,995 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:36,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:28:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:36,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:36,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:28:36,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:37,181 INFO L262 CegarLoopResult]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2021-10-11 02:28:37,182 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))) [2021-10-11 02:28:37,182 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-11 02:28:37,182 INFO L262 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-11 02:28:37,182 INFO L262 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2021-10-11 02:28:37,183 INFO L262 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-10-11 02:28:37,183 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|))) [2021-10-11 02:28:37,183 INFO L262 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2021-10-11 02:28:37,183 INFO L262 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-11 02:28:37,183 INFO L262 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-11 02:28:37,183 INFO L262 CegarLoopResult]: For program point L14-6(line 14) no Hoare annotation was computed. [2021-10-11 02:28:37,184 INFO L262 CegarLoopResult]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2021-10-11 02:28:37,184 INFO L262 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2021-10-11 02:28:37,184 INFO L265 CegarLoopResult]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2021-10-11 02:28:37,184 INFO L262 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-11 02:28:37,184 INFO L262 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-11 02:28:37,184 INFO L262 CegarLoopResult]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2021-10-11 02:28:37,185 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,185 INFO L262 CegarLoopResult]: For program point L19(lines 19 20) no Hoare annotation was computed. [2021-10-11 02:28:37,185 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,185 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)))) [2021-10-11 02:28:37,185 INFO L262 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,185 INFO L262 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,186 INFO L262 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,186 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)))) [2021-10-11 02:28:37,186 INFO L262 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,186 INFO L262 CegarLoopResult]: For program point L20-8(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,186 INFO L262 CegarLoopResult]: For program point L20-9(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,187 INFO L262 CegarLoopResult]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,187 INFO L262 CegarLoopResult]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2021-10-11 02:28:37,187 INFO L262 CegarLoopResult]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,187 INFO L265 CegarLoopResult]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2021-10-11 02:28:37,187 INFO L262 CegarLoopResult]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,187 INFO L262 CegarLoopResult]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,188 INFO L262 CegarLoopResult]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,188 INFO L262 CegarLoopResult]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:28:37,188 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:37,188 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:37,188 INFO L258 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-11 02:28:37,188 INFO L262 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-11 02:28:37,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:37 BoogieIcfgContainer [2021-10-11 02:28:37,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:37,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:37,194 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:37,194 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:37,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:34" (3/4) ... [2021-10-11 02:28:37,197 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:37,202 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2021-10-11 02:28:37,202 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2021-10-11 02:28:37,207 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:28:37,207 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:28:37,208 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:28:37,245 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6604c489-b8a2-4796-bb0d-4d8b518ac9dc/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:37,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:37,247 INFO L168 Benchmark]: Toolchain (without parser) took 3689.81 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 52.1 MB in the beginning and 96.2 MB in the end (delta: -44.0 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:37,248 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 57.2 MB in the beginning and 57.1 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:37,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.17 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 52.0 MB in the beginning and 89.0 MB in the end (delta: -37.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:37,249 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.45 ms. Allocated memory is still 111.1 MB. Free memory was 89.0 MB in the beginning and 87.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:37,249 INFO L168 Benchmark]: Boogie Preprocessor took 17.25 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 86.9 MB in the end (delta: 949.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:37,250 INFO L168 Benchmark]: RCFGBuilder took 307.49 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 73.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:37,251 INFO L168 Benchmark]: TraceAbstraction took 2967.33 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 73.2 MB in the beginning and 99.3 MB in the end (delta: -26.1 MB). Peak memory consumption was 57.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:37,251 INFO L168 Benchmark]: Witness Printer took 52.28 ms. Allocated memory is still 134.2 MB. Free memory was 99.3 MB in the beginning and 96.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:37,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 57.2 MB in the beginning and 57.1 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.17 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 52.0 MB in the beginning and 89.0 MB in the end (delta: -37.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.45 ms. Allocated memory is still 111.1 MB. Free memory was 89.0 MB in the beginning and 87.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.25 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 86.9 MB in the end (delta: 949.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 307.49 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 73.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2967.33 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 73.2 MB in the beginning and 99.3 MB in the end (delta: -26.1 MB). Peak memory consumption was 57.3 MB. Max. memory is 16.1 GB. * Witness Printer took 52.28 ms. Allocated memory is still 134.2 MB. Free memory was 99.3 MB in the beginning and 96.2 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: 2.7s, OverallIterations: 9, TraceHistogramMax: 10, AutomataDifference: 0.9s, 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, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s 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, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s 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...