./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:36:11,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:36:11,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:36:11,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:36:11,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:36:11,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:36:11,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:36:11,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:36:11,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:36:11,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:36:11,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:36:11,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:36:11,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:36:11,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:36:11,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:36:11,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:36:11,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:36:11,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:36:11,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:36:11,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:36:11,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:36:11,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:36:11,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:36:11,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:36:11,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:36:11,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:36:11,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:36:11,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:36:11,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:36:11,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:36:11,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:36:11,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:36:11,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:36:11,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:36:11,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:36:11,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:36:11,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:36:11,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:36:11,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:36:11,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:36:11,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:36:11,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:36:11,339 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:36:11,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:36:11,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:36:11,341 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:36:11,341 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:36:11,341 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:36:11,341 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:36:11,342 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:36:11,342 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:36:11,342 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:36:11,343 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:36:11,344 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:36:11,344 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:36:11,344 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:36:11,345 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:36:11,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:36:11,346 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:36:11,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:36:11,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:36:11,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:36:11,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:36:11,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:36:11,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:36:11,347 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:36:11,347 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:36:11,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:36:11,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:36:11,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:36:11,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:36:11,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:36:11,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:36:11,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:36:11,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:36:11,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:36:11,352 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:36:11,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:36:11,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:36:11,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:36:11,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:36:11,353 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_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 [2021-10-29 04:36:11,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:36:11,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:36:11,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:36:11,696 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:36:11,697 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:36:11,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2021-10-29 04:36:11,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/data/dd79727f7/f1925924f17c4291b7872078741f0475/FLAG8ce2d0424 [2021-10-29 04:36:12,237 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:36:12,240 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2021-10-29 04:36:12,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/data/dd79727f7/f1925924f17c4291b7872078741f0475/FLAG8ce2d0424 [2021-10-29 04:36:12,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/data/dd79727f7/f1925924f17c4291b7872078741f0475 [2021-10-29 04:36:12,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:36:12,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:36:12,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:36:12,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:36:12,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:36:12,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67323177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12, skipping insertion in model container [2021-10-29 04:36:12,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:36:12,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:36:12,797 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c[439,452] [2021-10-29 04:36:12,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:36:12,811 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:36:12,824 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c[439,452] [2021-10-29 04:36:12,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:36:12,840 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:36:12,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12 WrapperNode [2021-10-29 04:36:12,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:36:12,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:36:12,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:36:12,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:36:12,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:36:12,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:36:12,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:36:12,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:36:12,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:36:12,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:36:12,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:36:12,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:36:12,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12" (1/1) ... [2021-10-29 04:36:12,907 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:36:12,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:36:12,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:36:12,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:36:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-10-29 04:36:12,960 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-10-29 04:36:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:36:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:36:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2021-10-29 04:36:12,961 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2021-10-29 04:36:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:36:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:36:12,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:36:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 04:36:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:36:13,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:36:13,177 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 04:36:13,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:36:13 BoogieIcfgContainer [2021-10-29 04:36:13,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:36:13,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:36:13,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:36:13,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:36:13,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:36:12" (1/3) ... [2021-10-29 04:36:13,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21154ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:36:13, skipping insertion in model container [2021-10-29 04:36:13,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:36:12" (2/3) ... [2021-10-29 04:36:13,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21154ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:36:13, skipping insertion in model container [2021-10-29 04:36:13,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:36:13" (3/3) ... [2021-10-29 04:36:13,188 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2021-10-29 04:36:13,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:36:13,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:36:13,243 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:36:13,250 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, mAutomataTypeConcurrency=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 [2021-10-29 04:36:13,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:36:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-10-29 04:36:13,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:36:13,272 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:36:13,272 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:36:13,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:36:13,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:36:13,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1887683012, now seen corresponding path program 1 times [2021-10-29 04:36:13,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:36:13,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386897250] [2021-10-29 04:36:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:13,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:36:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:36:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:13,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:36:13,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386897250] [2021-10-29 04:36:13,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386897250] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:36:13,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:36:13,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:36:13,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172034430] [2021-10-29 04:36:13,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:36:13,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:36:13,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:36:13,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:36:13,576 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-10-29 04:36:13,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:36:13,682 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-10-29 04:36:13,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:36:13,684 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 [2021-10-29 04:36:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:36:13,692 INFO L225 Difference]: With dead ends: 28 [2021-10-29 04:36:13,692 INFO L226 Difference]: Without dead ends: 13 [2021-10-29 04:36:13,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:36:13,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-29 04:36:13,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-29 04:36:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-10-29 04:36:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-29 04:36:13,727 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2021-10-29 04:36:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:36:13,727 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-29 04:36:13,728 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) [2021-10-29 04:36:13,728 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-29 04:36:13,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 04:36:13,729 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:36:13,729 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:36:13,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:36:13,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:36:13,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:36:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1895315787, now seen corresponding path program 1 times [2021-10-29 04:36:13,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:36:13,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001363784] [2021-10-29 04:36:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:13,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:36:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:36:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:13,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:36:13,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001363784] [2021-10-29 04:36:13,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001363784] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:36:13,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661321247] [2021-10-29 04:36:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:13,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:13,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:36:13,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:36:13,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:36:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:36:14,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-29 04:36:14,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:36:14,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 04:36:14,232 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:36:14,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-10-29 04:36:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:14,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:36:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:14,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661321247] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:36:14,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [129160933] [2021-10-29 04:36:14,706 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 04:36:14,706 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:36:14,721 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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-10-29 04:36:14,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:36:14,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 23 [2021-10-29 04:36:14,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902384726] [2021-10-29 04:36:14,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-29 04:36:14,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:36:14,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-29 04:36:14,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2021-10-29 04:36:14,733 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 24 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 14 states have internal predecessors, (21), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:36:15,006 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-29 04:36:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-29 04:36:15,008 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 14 states have internal predecessors, (21), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 04:36:15,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:36:15,009 INFO L225 Difference]: With dead ends: 27 [2021-10-29 04:36:15,009 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 04:36:15,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2021-10-29 04:36:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 04:36:15,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-29 04:36:15,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-29 04:36:15,016 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2021-10-29 04:36:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:36:15,017 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-29 04:36:15,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 14 states have internal predecessors, (21), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:15,017 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-29 04:36:15,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 04:36:15,018 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:36:15,018 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-10-29 04:36:15,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-29 04:36:15,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:15,240 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:36:15,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:36:15,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1664768235, now seen corresponding path program 2 times [2021-10-29 04:36:15,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:36:15,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881026132] [2021-10-29 04:36:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:36:15,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:36:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:36:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:36:15,539 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:36:15,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881026132] [2021-10-29 04:36:15,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881026132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:36:15,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818129517] [2021-10-29 04:36:15,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:36:15,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:36:15,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:36:15,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:36:15,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-29 04:36:15,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:36:15,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-29 04:36:15,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:36:15,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-10-29 04:36:15,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-29 04:36:15,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-29 04:36:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-29 04:36:15,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:36:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-29 04:36:16,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818129517] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:36:16,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1933338221] [2021-10-29 04:36:16,043 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 04:36:16,043 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:36:16,044 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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-10-29 04:36:16,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:36:16,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 26 [2021-10-29 04:36:16,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364831204] [2021-10-29 04:36:16,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-29 04:36:16,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:36:16,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-29 04:36:16,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2021-10-29 04:36:16,048 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 10 states have call successors, (12), 10 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:36:16,434 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-29 04:36:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-29 04:36:16,434 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 10 states have call successors, (12), 10 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-29 04:36:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:36:16,435 INFO L225 Difference]: With dead ends: 29 [2021-10-29 04:36:16,435 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:36:16,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=1313, Unknown=0, NotChecked=0, Total=1560 [2021-10-29 04:36:16,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:36:16,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:36:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:16,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:36:16,440 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-29 04:36:16,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:36:16,440 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:36:16,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 10 states have call successors, (12), 10 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:36:16,441 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:36:16,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:36:16,443 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fooErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:36:16,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:36:16,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:36:16,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:36:16,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:36:16,970 INFO L857 garLoopResultBuilder]: For program point fooEXIT(lines 11 20) no Hoare annotation was computed. [2021-10-29 04:36:16,970 INFO L853 garLoopResultBuilder]: At program point fooENTRY(lines 11 20) the Hoare annotation is: (let ((.cse4 (select |#memory_int| |foo_#in~p.base|)) (.cse3 (select |old(#memory_int)| |foo_#in~p.base|))) (let ((.cse2 (not (= |foo_#in~p.offset| 0))) (.cse0 (select .cse3 |foo_#in~p.offset|)) (.cse1 (select .cse4 |foo_#in~p.offset|))) (and (or (not (<= .cse0 13)) (<= .cse1 13)) (or (not (<= .cse0 12)) (<= .cse1 12)) (or (= .cse1 10) .cse2 (not (= .cse0 10))) (or (not (= (select .cse3 0) 11)) .cse2 (= (select .cse4 0) 11)) (or (not (< .cse0 21)) (< .cse1 21))))) [2021-10-29 04:36:16,971 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-10-29 04:36:16,971 INFO L857 garLoopResultBuilder]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-10-29 04:36:16,971 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 19) no Hoare annotation was computed. [2021-10-29 04:36:16,971 INFO L853 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (let ((.cse4 (select |old(#memory_int)| |foo_#in~p.base|)) (.cse5 (select |#memory_int| |foo_#in~p.base|))) (let ((.cse1 (select .cse5 |foo_#in~p.offset|)) (.cse0 (select .cse4 |foo_#in~p.offset|)) (.cse3 (not (= |foo_#in~p.offset| 0))) (.cse2 (select (select |#memory_int| foo_~p.base) foo_~p.offset))) (and (or (not (< .cse0 21)) (and (< .cse1 21) (< .cse2 20))) (or (and (<= .cse1 12) (<= .cse2 12)) (not (<= .cse0 12))) (or (not (<= .cse0 13)) (<= .cse1 13)) (or (and (= .cse1 10) (= foo_~p.offset 0) (= .cse2 10)) .cse3 (not (= .cse0 10))) (or (not (= (select .cse4 0) 11)) .cse3 (and (<= .cse2 11) (= (select .cse5 0) 11)))))) [2021-10-29 04:36:16,971 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 19) no Hoare annotation was computed. [2021-10-29 04:36:16,972 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 11 20) no Hoare annotation was computed. [2021-10-29 04:36:16,972 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:36:16,972 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:36:16,972 INFO L853 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (= (select (select |#memory_int| ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset) 10) (= ULTIMATE.start_main_~p~0.offset 0)) [2021-10-29 04:36:16,972 INFO L857 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-10-29 04:36:16,972 INFO L857 garLoopResultBuilder]: For program point plusFINAL(lines 6 9) no Hoare annotation was computed. [2021-10-29 04:36:16,972 INFO L853 garLoopResultBuilder]: At program point plusENTRY(lines 6 9) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (< .cse0 20) (not (< .cse1 20))) (or (not (= .cse1 10)) (not (= |plus_#in~p.offset| 0)) (= .cse0 10)) (or (<= .cse0 11) (not (<= .cse1 11))) (or (<= .cse0 12) (not (<= .cse1 12))))) [2021-10-29 04:36:16,973 INFO L857 garLoopResultBuilder]: For program point plusEXIT(lines 6 9) no Hoare annotation was computed. [2021-10-29 04:36:16,973 INFO L853 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (let ((.cse3 (select |#memory_int| plus_~p.base))) (let ((.cse2 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse0 (select .cse3 plus_~p.offset)) (.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (< .cse0 21) (not (< .cse1 20))) (or (not (= .cse1 10)) (not (= |plus_#in~p.offset| 0)) (and (= plus_~p.offset 0) (<= .cse2 11) (= (select .cse3 0) 11))) (or (and (<= .cse2 12) (<= .cse0 12)) (not (<= .cse1 11))) (or (and (< .cse2 20) (<= .cse0 13)) (not (<= .cse1 12)))))) [2021-10-29 04:36:16,976 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1] [2021-10-29 04:36:16,977 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:36:16,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:36:16 BoogieIcfgContainer [2021-10-29 04:36:16,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:36:16,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:36:16,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:36:16,989 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:36:16,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:36:13" (3/4) ... [2021-10-29 04:36:16,993 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:36:17,001 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2021-10-29 04:36:17,002 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2021-10-29 04:36:17,008 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-29 04:36:17,009 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 04:36:17,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-29 04:36:17,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:36:17,059 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:36:17,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:36:17,060 INFO L168 Benchmark]: Toolchain (without parser) took 4454.36 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 51.7 MB in the beginning and 65.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:17,060 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:36:17,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.24 ms. Allocated memory is still 92.3 MB. Free memory was 51.5 MB in the beginning and 68.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:17,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.10 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 66.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:17,064 INFO L168 Benchmark]: Boogie Preprocessor took 19.82 ms. Allocated memory is still 92.3 MB. Free memory was 66.5 MB in the beginning and 65.7 MB in the end (delta: 876.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:36:17,064 INFO L168 Benchmark]: RCFGBuilder took 284.16 ms. Allocated memory is still 92.3 MB. Free memory was 65.7 MB in the beginning and 54.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:17,065 INFO L168 Benchmark]: TraceAbstraction took 3805.77 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 54.0 MB in the beginning and 67.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:17,066 INFO L168 Benchmark]: Witness Printer took 70.91 ms. Allocated memory is still 115.3 MB. Free memory was 67.4 MB in the beginning and 65.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:36:17,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.24 ms. Allocated memory is still 92.3 MB. Free memory was 51.5 MB in the beginning and 68.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.10 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 66.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.82 ms. Allocated memory is still 92.3 MB. Free memory was 66.5 MB in the beginning and 65.7 MB in the end (delta: 876.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 284.16 ms. Allocated memory is still 92.3 MB. Free memory was 65.7 MB in the beginning and 54.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3805.77 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 54.0 MB in the beginning and 67.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * Witness Printer took 70.91 ms. Allocated memory is still 115.3 MB. Free memory was 67.4 MB in the beginning and 65.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 14 SDslu, 71 SDs, 0 SdLazy, 255 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, InterpolantAutomatonStates: 48, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 21 PreInvPairs, 21 NumberOfFragments, 389 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 208 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 70 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 562 SizeOfPredicates, 26 NumberOfNonLiveVariables, 218 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 40/69 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 04:36:17,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4052f87-6310-47e4-8baf-42a8afbe029f/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...