./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8 --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 f1df70d37f8afdd882c0c58eaed03ed11e314407 ................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:53:18,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:53:18,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:53:18,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:53:18,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:53:18,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:53:18,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:53:18,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:53:18,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:53:18,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:53:18,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:53:18,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:53:18,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:53:18,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:53:18,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:53:18,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:53:18,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:53:18,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:53:18,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:53:18,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:53:18,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:53:18,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:53:18,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:53:18,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:53:18,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:53:18,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:53:18,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:53:18,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:53:18,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:53:18,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:53:18,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:53:18,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:53:18,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:53:18,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:53:18,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:53:18,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:53:18,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:53:18,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:53:18,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:53:18,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:53:18,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:53:18,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-13 07:53:18,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:53:18,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:53:18,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:53:18,289 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:53:18,290 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:53:18,290 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:53:18,290 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:53:18,291 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:53:18,291 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:53:18,291 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:53:18,291 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:53:18,292 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:53:18,292 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:53:18,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:53:18,293 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:53:18,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:53:18,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:53:18,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:53:18,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:53:18,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:53:18,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:53:18,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:53:18,295 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:53:18,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:53:18,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:53:18,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:53:18,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:53:18,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:53:18,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:53:18,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:53:18,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:53:18,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:53:18,298 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:53:18,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:53:18,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:53:18,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:53:18,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:53:18,299 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_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1df70d37f8afdd882c0c58eaed03ed11e314407 [2021-10-13 07:53:18,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:53:18,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:53:18,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:53:18,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:53:18,629 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:53:18,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c [2021-10-13 07:53:18,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/data/d65a9c171/af47e894c1e649f6b096f14dfc9119b9/FLAG580874453 [2021-10-13 07:53:19,165 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:53:19,170 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c [2021-10-13 07:53:19,183 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/data/d65a9c171/af47e894c1e649f6b096f14dfc9119b9/FLAG580874453 [2021-10-13 07:53:19,570 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/data/d65a9c171/af47e894c1e649f6b096f14dfc9119b9 [2021-10-13 07:53:19,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:53:19,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:53:19,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:53:19,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:53:19,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:53:19,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4337d4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19, skipping insertion in model container [2021-10-13 07:53:19,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:53:19,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:53:19,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:53:19,749 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:53:19,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:53:19,807 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:53:19,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19 WrapperNode [2021-10-13 07:53:19,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:53:19,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:53:19,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:53:19,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:53:19,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:53:19,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:53:19,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:53:19,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:53:19,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:53:19,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:53:19,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:53:19,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:53:19,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19" (1/1) ... [2021-10-13 07:53:19,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:53:19,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:19,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:53:19,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:53:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-13 07:53:19,971 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-13 07:53:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-13 07:53:19,972 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-13 07:53:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:53:19,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:53:20,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:53:20,179 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:53:20,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:20 BoogieIcfgContainer [2021-10-13 07:53:20,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:53:20,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:53:20,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:53:20,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:53:20,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:19" (1/3) ... [2021-10-13 07:53:20,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2edd3368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:20, skipping insertion in model container [2021-10-13 07:53:20,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:19" (2/3) ... [2021-10-13 07:53:20,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2edd3368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:20, skipping insertion in model container [2021-10-13 07:53:20,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:20" (3/3) ... [2021-10-13 07:53:20,199 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex2.c [2021-10-13 07:53:20,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:53:20,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-13 07:53:20,272 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:53:20,279 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:53:20,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 07:53:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 07:53:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:53:20,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:20,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:53:20,305 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-13 07:53:20,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:20,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1512012543, now seen corresponding path program 1 times [2021-10-13 07:53:20,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:53:20,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211435804] [2021-10-13 07:53:20,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:20,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:53:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:20,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:53:20,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211435804] [2021-10-13 07:53:20,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211435804] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:20,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:20,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:53:20,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318833947] [2021-10-13 07:53:20,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:53:20,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:53:20,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:53:20,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:53:20,530 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:20,688 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-10-13 07:53:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:53:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:53:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:20,698 INFO L225 Difference]: With dead ends: 36 [2021-10-13 07:53:20,698 INFO L226 Difference]: Without dead ends: 22 [2021-10-13 07:53:20,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:53:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-13 07:53:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2021-10-13 07:53:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-13 07:53:20,745 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2021-10-13 07:53:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:20,746 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-13 07:53:20,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-13 07:53:20,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:53:20,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:20,747 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:20,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:53:20,748 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-13 07:53:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:20,749 INFO L82 PathProgramCache]: Analyzing trace with hash -372251385, now seen corresponding path program 1 times [2021-10-13 07:53:20,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:53:20,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782438803] [2021-10-13 07:53:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:20,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:53:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:53:20,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:53:20,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782438803] [2021-10-13 07:53:20,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782438803] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:20,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:20,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:53:20,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139854253] [2021-10-13 07:53:20,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:53:20,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:53:20,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:53:20,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:53:20,831 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:20,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:20,873 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-13 07:53:20,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:53:20,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:53:20,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:20,875 INFO L225 Difference]: With dead ends: 22 [2021-10-13 07:53:20,875 INFO L226 Difference]: Without dead ends: 21 [2021-10-13 07:53:20,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:53:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-13 07:53:20,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-10-13 07:53:20,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-13 07:53:20,881 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2021-10-13 07:53:20,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:20,881 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-13 07:53:20,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:20,882 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-13 07:53:20,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:53:20,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:20,883 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:20,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:53:20,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-13 07:53:20,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:20,884 INFO L82 PathProgramCache]: Analyzing trace with hash -135389413, now seen corresponding path program 1 times [2021-10-13 07:53:20,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:53:20,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046735721] [2021-10-13 07:53:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:20,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:53:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:53:20,910 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:53:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:53:20,945 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:53:20,946 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:53:20,947 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:53:20,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:53:20,950 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:53:20,950 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:53:20,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:53:20,957 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:53:20,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:20 BoogieIcfgContainer [2021-10-13 07:53:20,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:53:20,977 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:53:20,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:53:20,978 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:53:20,978 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:20" (3/4) ... [2021-10-13 07:53:20,980 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:53:21,030 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:53:21,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:53:21,032 INFO L168 Benchmark]: Toolchain (without parser) took 1454.31 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 51.2 MB in the beginning and 58.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:21,033 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 67.6 MB in the beginning and 67.6 MB in the end (delta: 38.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:21,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.53 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 51.0 MB in the beginning and 100.4 MB in the end (delta: -49.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:21,034 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.06 ms. Allocated memory is still 121.6 MB. Free memory was 100.4 MB in the beginning and 99.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:21,034 INFO L168 Benchmark]: Boogie Preprocessor took 26.42 ms. Allocated memory is still 121.6 MB. Free memory was 99.1 MB in the beginning and 98.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:21,035 INFO L168 Benchmark]: RCFGBuilder took 313.14 ms. Allocated memory is still 121.6 MB. Free memory was 98.1 MB in the beginning and 88.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:21,035 INFO L168 Benchmark]: TraceAbstraction took 785.07 ms. Allocated memory is still 121.6 MB. Free memory was 88.0 MB in the beginning and 59.8 MB in the end (delta: 28.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:21,036 INFO L168 Benchmark]: Witness Printer took 53.17 ms. Allocated memory is still 121.6 MB. Free memory was 59.8 MB in the beginning and 58.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:21,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 67.6 MB in the beginning and 67.6 MB in the end (delta: 38.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 227.53 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 51.0 MB in the beginning and 100.4 MB in the end (delta: -49.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.06 ms. Allocated memory is still 121.6 MB. Free memory was 100.4 MB in the beginning and 99.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.42 ms. Allocated memory is still 121.6 MB. Free memory was 99.1 MB in the beginning and 98.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 313.14 ms. Allocated memory is still 121.6 MB. Free memory was 98.1 MB in the beginning and 88.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 785.07 ms. Allocated memory is still 121.6 MB. Free memory was 88.0 MB in the beginning and 59.8 MB in the end (delta: 28.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 53.17 ms. Allocated memory is still 121.6 MB. Free memory was 59.8 MB in the beginning and 58.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L30] int i = __VERIFIER_nondet_int(); [L31] int x = __VERIFIER_nondet_int(); [L32] COND TRUE i >= 0 && x >= 0 [L33] CALL f(i,x) VAL [\old(i)=2147483647, \old(x)=1] [L18] COND FALSE !(i==0) VAL [\old(i)=2147483647, \old(x)=1, i=2147483647, x=1] [L21] EXPR i-1 VAL [\old(i)=2147483647, \old(x)=1, i=2147483647, x=1] [L21] CALL g(i-1,x,i) VAL [\old(a)=2147483646, \old(b)=1, \old(c)=2147483647] [L26] b+c VAL [\old(a)=2147483646, \old(b)=1, \old(c)=2147483647, a=2147483646, b=1, c=2147483647] - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 684.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 10.8ms, AutomataDifference: 250.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 23 SDslu, 84 SDs, 0 SdLazy, 44 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.5ms SsaConstructionTime, 56.6ms SatisfiabilityAnalysisTime, 127.3ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 31 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 incorrect! [2021-10-13 07:53:21,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c15364c9-7b52-439a-9b16-76eb4c661306/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...