./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.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_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/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 554582d6fc3de8e87f5dd30e5019302b6e1b96be ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:32:24,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:32:24,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:32:24,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:32:24,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:32:24,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:32:24,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:32:24,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:32:24,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:32:24,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:32:24,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:32:24,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:32:24,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:32:24,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:32:24,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:32:24,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:32:24,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:32:24,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:32:24,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:32:24,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:32:24,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:32:24,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:32:24,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:32:24,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:32:24,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:32:24,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:32:24,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:32:24,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:32:24,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:32:24,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:32:24,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:32:24,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:32:24,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:32:24,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:32:24,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:32:24,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:32:24,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:32:24,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:32:24,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:32:24,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:32:24,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:32:24,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-30 02:32:24,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:32:24,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:32:24,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:32:24,260 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:32:24,260 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:32:24,261 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:32:24,261 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:32:24,261 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:32:24,262 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:32:24,262 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:32:24,263 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:32:24,264 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:32:24,264 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:32:24,264 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:32:24,265 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:32:24,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:32:24,266 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:32:24,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:32:24,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:32:24,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:32:24,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:32:24,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:32:24,268 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:32:24,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:32:24,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:32:24,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:32:24,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:32:24,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:32:24,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:32:24,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:32:24,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:32:24,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:32:24,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:32:24,273 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:32:24,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:32:24,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:32:24,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:32:24,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:32:24,274 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_81a4fd08-bd69-439c-9dc1-146d401f9f42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2020-11-30 02:32:24,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:32:24,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:32:24,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:32:24,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:32:24,635 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:32:24,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2020-11-30 02:32:24,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/data/d56a1fa6c/66a5b0ce36264a0bab3a7db9ce86f9b8/FLAGc81968aa6 [2020-11-30 02:32:25,237 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:32:25,238 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2020-11-30 02:32:25,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/data/d56a1fa6c/66a5b0ce36264a0bab3a7db9ce86f9b8/FLAGc81968aa6 [2020-11-30 02:32:25,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/data/d56a1fa6c/66a5b0ce36264a0bab3a7db9ce86f9b8 [2020-11-30 02:32:25,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:32:25,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:32:25,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:32:25,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:32:25,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:32:25,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:32:25" (1/1) ... [2020-11-30 02:32:25,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbb6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25, skipping insertion in model container [2020-11-30 02:32:25,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:32:25" (1/1) ... [2020-11-30 02:32:25,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:32:25,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:32:25,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:32:25,896 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:32:25,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:32:25,959 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:32:25,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25 WrapperNode [2020-11-30 02:32:25,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:32:25,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:32:25,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:32:25,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:32:25,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25" (1/1) ... [2020-11-30 02:32:25,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25" (1/1) ... [2020-11-30 02:32:25,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:32:25,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:32:25,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:32:25,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:32:26,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25" (1/1) ... [2020-11-30 02:32:26,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25" (1/1) ... [2020-11-30 02:32:26,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25" (1/1) ... [2020-11-30 02:32:26,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25" (1/1) ... [2020-11-30 02:32:26,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25" (1/1) ... [2020-11-30 02:32:26,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25" (1/1) ... [2020-11-30 02:32:26,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25" (1/1) ... [2020-11-30 02:32:26,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:32:26,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:32:26,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:32:26,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:32:26,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/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 [2020-11-30 02:32:26,109 INFO L130 BoogieDeclarations]: Found specification of procedure p [2020-11-30 02:32:26,109 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2020-11-30 02:32:26,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:32:26,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:32:26,388 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:32:26,388 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-30 02:32:26,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:32:26 BoogieIcfgContainer [2020-11-30 02:32:26,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:32:26,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:32:26,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:32:26,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:32:26,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:32:25" (1/3) ... [2020-11-30 02:32:26,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe504db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:32:26, skipping insertion in model container [2020-11-30 02:32:26,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:32:25" (2/3) ... [2020-11-30 02:32:26,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe504db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:32:26, skipping insertion in model container [2020-11-30 02:32:26,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:32:26" (3/3) ... [2020-11-30 02:32:26,419 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2020-11-30 02:32:26,433 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:32:26,442 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 02:32:26,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 02:32:26,494 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:32:26,494 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:32:26,494 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:32:26,494 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:32:26,494 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:32:26,495 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:32:26,495 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:32:26,495 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:32:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-30 02:32:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:32:26,515 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:32:26,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:32:26,516 INFO L429 AbstractCegarLoop]: === Iteration 1 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:32:26,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:32:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1571177437, now seen corresponding path program 1 times [2020-11-30 02:32:26,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:32:26,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930596979] [2020-11-30 02:32:26,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:32:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:32:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:32:26,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930596979] [2020-11-30 02:32:26,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:32:26,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:32:26,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653937233] [2020-11-30 02:32:26,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:32:26,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:32:26,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:32:26,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:32:26,777 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2020-11-30 02:32:27,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:32:27,002 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2020-11-30 02:32:27,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:32:27,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-30 02:32:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:32:27,015 INFO L225 Difference]: With dead ends: 42 [2020-11-30 02:32:27,015 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 02:32:27,019 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 [2020-11-30 02:32:27,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 02:32:27,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2020-11-30 02:32:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 02:32:27,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-30 02:32:27,066 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2020-11-30 02:32:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:32:27,066 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-30 02:32:27,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:32:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-30 02:32:27,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:32:27,067 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:32:27,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:32:27,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:32:27,068 INFO L429 AbstractCegarLoop]: === Iteration 2 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:32:27,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:32:27,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1461860328, now seen corresponding path program 1 times [2020-11-30 02:32:27,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:32:27,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44869106] [2020-11-30 02:32:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:32:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:32:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:32:27,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44869106] [2020-11-30 02:32:27,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:32:27,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:32:27,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044949585] [2020-11-30 02:32:27,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:32:27,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:32:27,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:32:27,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:32:27,117 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-11-30 02:32:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:32:27,137 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-11-30 02:32:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:32:27,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-30 02:32:27,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:32:27,139 INFO L225 Difference]: With dead ends: 19 [2020-11-30 02:32:27,140 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 02:32:27,141 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 [2020-11-30 02:32:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 02:32:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 02:32:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 02:32:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-30 02:32:27,148 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2020-11-30 02:32:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:32:27,148 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-30 02:32:27,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:32:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-30 02:32:27,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:32:27,149 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:32:27,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:32:27,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:32:27,150 INFO L429 AbstractCegarLoop]: === Iteration 3 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:32:27,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:32:27,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1461867311, now seen corresponding path program 1 times [2020-11-30 02:32:27,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:32:27,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203794976] [2020-11-30 02:32:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:32:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:32:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:32:27,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203794976] [2020-11-30 02:32:27,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:32:27,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:32:27,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469815276] [2020-11-30 02:32:27,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:32:27,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:32:27,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:32:27,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:32:27,247 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-11-30 02:32:27,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:32:27,352 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-30 02:32:27,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:32:27,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-30 02:32:27,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:32:27,355 INFO L225 Difference]: With dead ends: 30 [2020-11-30 02:32:27,355 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 02:32:27,356 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 [2020-11-30 02:32:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 02:32:27,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-11-30 02:32:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 02:32:27,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-11-30 02:32:27,367 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2020-11-30 02:32:27,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:32:27,367 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-11-30 02:32:27,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:32:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-30 02:32:27,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:32:27,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:32:27,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:32:27,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:32:27,369 INFO L429 AbstractCegarLoop]: === Iteration 4 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:32:27,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:32:27,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1926753568, now seen corresponding path program 1 times [2020-11-30 02:32:27,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:32:27,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419433647] [2020-11-30 02:32:27,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:32:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:32:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:32:27,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419433647] [2020-11-30 02:32:27,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:32:27,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:32:27,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889575992] [2020-11-30 02:32:27,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:32:27,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:32:27,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:32:27,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:32:27,454 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2020-11-30 02:32:27,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:32:27,477 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-11-30 02:32:27,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:32:27,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-30 02:32:27,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:32:27,479 INFO L225 Difference]: With dead ends: 24 [2020-11-30 02:32:27,479 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 02:32:27,480 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 [2020-11-30 02:32:27,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 02:32:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 02:32:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 02:32:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-30 02:32:27,487 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2020-11-30 02:32:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:32:27,487 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-30 02:32:27,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:32:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-30 02:32:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:32:27,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:32:27,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:32:27,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:32:27,489 INFO L429 AbstractCegarLoop]: === Iteration 5 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:32:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:32:27,490 INFO L82 PathProgramCache]: Analyzing trace with hash 168982822, now seen corresponding path program 1 times [2020-11-30 02:32:27,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:32:27,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633773525] [2020-11-30 02:32:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:32:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:32:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:32:27,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633773525] [2020-11-30 02:32:27,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301738389] [2020-11-30 02:32:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/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 [2020-11-30 02:32:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:32:27,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:32:27,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:32:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:32:27,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:32:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:32:27,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1104209378] [2020-11-30 02:32:27,960 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-30 02:32:27,961 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:32:27,969 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 02:32:27,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:32:27,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2020-11-30 02:32:27,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45591390] [2020-11-30 02:32:27,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 02:32:27,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:32:27,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 02:32:27,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:32:27,984 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 12 states. [2020-11-30 02:32:28,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:32:28,203 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-11-30 02:32:28,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:32:28,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-11-30 02:32:28,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:32:28,207 INFO L225 Difference]: With dead ends: 33 [2020-11-30 02:32:28,208 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 02:32:28,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-11-30 02:32:28,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 02:32:28,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 16. [2020-11-30 02:32:28,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:32:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-30 02:32:28,215 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2020-11-30 02:32:28,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:32:28,219 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-30 02:32:28,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 02:32:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-30 02:32:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:32:28,222 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:32:28,222 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:32:28,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:32:28,423 INFO L429 AbstractCegarLoop]: === Iteration 6 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:32:28,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:32:28,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1019019044, now seen corresponding path program 1 times [2020-11-30 02:32:28,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:32:28,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931915164] [2020-11-30 02:32:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:32:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:32:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:32:28,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931915164] [2020-11-30 02:32:28,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248451551] [2020-11-30 02:32:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:32:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:32:28,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:32:28,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:32:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:32:28,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:32:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:32:28,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [353506799] [2020-11-30 02:32:28,777 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-11-30 02:32:28,777 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:32:28,777 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 02:32:28,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:32:28,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2020-11-30 02:32:28,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042036656] [2020-11-30 02:32:28,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 02:32:28,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:32:28,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 02:32:28,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:32:28,786 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 12 states. [2020-11-30 02:32:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:32:29,011 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-11-30 02:32:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:32:29,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2020-11-30 02:32:29,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:32:29,016 INFO L225 Difference]: With dead ends: 22 [2020-11-30 02:32:29,016 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:32:29,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-11-30 02:32:29,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:32:29,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:32:29,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:32:29,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:32:29,019 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-30 02:32:29,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:32:29,019 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:32:29,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 02:32:29,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:32:29,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:32:29,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:32:29,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:32:29,654 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2020-11-30 02:32:29,658 INFO L274 CegarLoopResult]: For program point pEXIT(lines 12 22) no Hoare annotation was computed. [2020-11-30 02:32:29,658 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-11-30 02:32:29,658 INFO L274 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-11-30 02:32:29,658 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-11-30 02:32:29,659 INFO L277 CegarLoopResult]: At program point pENTRY(lines 12 22) the Hoare annotation is: true [2020-11-30 02:32:29,659 INFO L270 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (or (and (<= p_~n 2147483647) (<= p_~r 2147483647) (<= 1 p_~n) (<= p_~m 2147483647)) (not (<= |p_#in~n| 2147483647)) (not (<= |p_#in~m| 2147483647)) (not (<= |p_#in~r| 2147483647))) [2020-11-30 02:32:29,660 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-11-30 02:32:29,660 INFO L274 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-11-30 02:32:29,660 INFO L274 CegarLoopResult]: For program point L13(lines 13 21) no Hoare annotation was computed. [2020-11-30 02:32:29,660 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-11-30 02:32:29,661 INFO L274 CegarLoopResult]: For program point pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-30 02:32:29,661 INFO L270 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~n| 2147483647))) (.cse1 (not (<= |p_#in~m| 2147483647))) (.cse2 (not (<= |p_#in~r| 2147483647)))) (and (or .cse0 .cse1 .cse2 (and (<= p_~n 2147483647) (<= p_~m 2147483647) (<= 1 p_~r))) (or (<= p_~r 2147483647) .cse0 .cse1 .cse2))) [2020-11-30 02:32:29,662 INFO L274 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-11-30 02:32:29,662 INFO L274 CegarLoopResult]: For program point pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-30 02:32:29,662 INFO L274 CegarLoopResult]: For program point pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-30 02:32:29,663 INFO L274 CegarLoopResult]: For program point pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-30 02:32:29,663 INFO L274 CegarLoopResult]: For program point pFINAL(lines 12 22) no Hoare annotation was computed. [2020-11-30 02:32:29,663 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:32:29,663 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:32:29,665 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~r~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2020-11-30 02:32:29,666 INFO L274 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-11-30 02:32:29,666 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-11-30 02:32:29,666 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 30) the Hoare annotation is: (<= ULTIMATE.start_main_~r~0 2147483647) [2020-11-30 02:32:29,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:32:29 BoogieIcfgContainer [2020-11-30 02:32:29,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:32:29,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:32:29,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:32:29,684 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:32:29,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:32:26" (3/4) ... [2020-11-30 02:32:29,688 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:32:29,693 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2020-11-30 02:32:29,699 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 02:32:29,701 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 02:32:29,701 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:32:29,765 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_81a4fd08-bd69-439c-9dc1-146d401f9f42/bin/utaipan/witness.graphml [2020-11-30 02:32:29,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:32:29,767 INFO L168 Benchmark]: Toolchain (without parser) took 4112.68 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 52.7 MB in the beginning and 68.0 MB in the end (delta: -15.4 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:32:29,768 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 83.9 MB. Free memory was 58.6 MB in the beginning and 58.5 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:32:29,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.32 ms. Allocated memory is still 83.9 MB. Free memory was 52.4 MB in the beginning and 63.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:32:29,770 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.45 ms. Allocated memory is still 83.9 MB. Free memory was 63.7 MB in the beginning and 62.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:32:29,770 INFO L168 Benchmark]: Boogie Preprocessor took 21.34 ms. Allocated memory is still 83.9 MB. Free memory was 62.5 MB in the beginning and 61.7 MB in the end (delta: 713.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:32:29,771 INFO L168 Benchmark]: RCFGBuilder took 369.79 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 50.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:32:29,772 INFO L168 Benchmark]: TraceAbstraction took 3278.68 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 49.9 MB in the beginning and 71.0 MB in the end (delta: -21.1 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:32:29,773 INFO L168 Benchmark]: Witness Printer took 82.25 ms. Allocated memory is still 102.8 MB. Free memory was 71.0 MB in the beginning and 68.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:32:29,780 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 83.9 MB. Free memory was 58.6 MB in the beginning and 58.5 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.32 ms. Allocated memory is still 83.9 MB. Free memory was 52.4 MB in the beginning and 63.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.45 ms. Allocated memory is still 83.9 MB. Free memory was 63.7 MB in the beginning and 62.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.34 ms. Allocated memory is still 83.9 MB. Free memory was 62.5 MB in the beginning and 61.7 MB in the end (delta: 713.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 369.79 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 50.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3278.68 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 49.9 MB in the beginning and 71.0 MB in the end (delta: -21.1 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. * Witness Printer took 82.25 ms. Allocated memory is still 102.8 MB. Free memory was 71.0 MB in the beginning and 68.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: r <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 149 SDslu, 139 SDs, 0 SdLazy, 193 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 29 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 80 HoareAnnotationTreeSize, 17 FomulaSimplifications, 430 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 70 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2309 SizeOfPredicates, 4 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 0/15 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...