./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan --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 aea35f6fe28f2a249b678370b7d0543ee4b994af ....................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:16,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:16,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:16,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:16,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:16,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:16,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:16,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:16,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:16,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:16,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:16,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:16,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:16,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:16,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:16,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:16,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:16,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:16,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:16,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:16,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:16,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:16,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:16,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:16,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:16,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:16,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:16,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:16,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:16,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:16,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:16,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:16,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:16,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:16,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:16,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:16,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:16,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:16,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:16,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:16,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:16,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:16,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:16,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:16,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:16,547 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:16,548 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:16,548 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:16,548 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:16,548 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:16,549 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:16,549 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:16,549 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:16,549 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:16,549 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:16,550 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:16,550 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:16,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:16,551 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:16,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:16,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:16,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:16,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:16,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:16,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:16,552 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:16,552 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:16,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:16,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:16,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:16,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:16,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:16,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:16,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:16,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:16,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:16,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:16,555 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:16,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:16,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:16,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:16,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:16,556 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aea35f6fe28f2a249b678370b7d0543ee4b994af [2020-11-22 13:05:16,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:16,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:16,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:16,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:16,849 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:16,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c [2020-11-22 13:05:16,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/data/065199756/49db95fe3c8a4ae895841c93b0fd2365/FLAG8530ba0e8 [2020-11-22 13:05:17,449 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:17,450 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/sv-benchmarks/c/recursive-simple/id2_b5_o10.c [2020-11-22 13:05:17,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/data/065199756/49db95fe3c8a4ae895841c93b0fd2365/FLAG8530ba0e8 [2020-11-22 13:05:17,827 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/data/065199756/49db95fe3c8a4ae895841c93b0fd2365 [2020-11-22 13:05:17,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:17,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:17,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:17,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:17,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:17,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:17" (1/1) ... [2020-11-22 13:05:17,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e039590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:17, skipping insertion in model container [2020-11-22 13:05:17,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:17" (1/1) ... [2020-11-22 13:05:17,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:17,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:18,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:18,045 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:18,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:18,070 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:18,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18 WrapperNode [2020-11-22 13:05:18,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:18,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:18,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:18,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:18,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:18,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:18,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:18,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:18,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... [2020-11-22 13:05:18,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:18,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:18,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:18,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:18,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-11-22 13:05:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-11-22 13:05:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:18,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-22 13:05:18,191 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-22 13:05:18,542 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:18,543 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-22 13:05:18,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:18 BoogieIcfgContainer [2020-11-22 13:05:18,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:18,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:18,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:18,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:18,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:17" (1/3) ... [2020-11-22 13:05:18,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed0b921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:18, skipping insertion in model container [2020-11-22 13:05:18,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:18" (2/3) ... [2020-11-22 13:05:18,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed0b921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:18, skipping insertion in model container [2020-11-22 13:05:18,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:18" (3/3) ... [2020-11-22 13:05:18,554 INFO L111 eAbstractionObserver]: Analyzing ICFG id2_b5_o10.c [2020-11-22 13:05:18,565 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:18,569 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:18,580 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:18,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:18,615 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:18,615 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:18,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:18,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:18,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:18,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:18,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-22 13:05:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:05:18,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:18,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:18,632 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:18,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:18,638 INFO L82 PathProgramCache]: Analyzing trace with hash 158551182, now seen corresponding path program 1 times [2020-11-22 13:05:18,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:18,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388894235] [2020-11-22 13:05:18,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:18,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388894235] [2020-11-22 13:05:18,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:18,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 13:05:18,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340464965] [2020-11-22 13:05:18,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:05:18,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:18,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:05:18,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:18,872 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-11-22 13:05:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:18,972 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-22 13:05:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:18,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-22 13:05:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:18,994 INFO L225 Difference]: With dead ends: 30 [2020-11-22 13:05:18,994 INFO L226 Difference]: Without dead ends: 20 [2020-11-22 13:05:18,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:19,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-22 13:05:19,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-22 13:05:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 13:05:19,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-22 13:05:19,031 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2020-11-22 13:05:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:19,032 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-22 13:05:19,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:05:19,032 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-22 13:05:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:05:19,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:19,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:19,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:19,034 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:19,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:19,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1894085204, now seen corresponding path program 1 times [2020-11-22 13:05:19,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:19,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144671444] [2020-11-22 13:05:19,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:19,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144671444] [2020-11-22 13:05:19,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:19,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-22 13:05:19,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603452747] [2020-11-22 13:05:19,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 13:05:19,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:19,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 13:05:19,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:19,190 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2020-11-22 13:05:19,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:19,233 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-11-22 13:05:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:05:19,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-22 13:05:19,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:19,234 INFO L225 Difference]: With dead ends: 29 [2020-11-22 13:05:19,235 INFO L226 Difference]: Without dead ends: 25 [2020-11-22 13:05:19,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-22 13:05:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-11-22 13:05:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 13:05:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-22 13:05:19,241 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-11-22 13:05:19,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:19,242 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-22 13:05:19,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 13:05:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-22 13:05:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 13:05:19,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:19,243 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:19,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:19,244 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:19,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1480520114, now seen corresponding path program 1 times [2020-11-22 13:05:19,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:19,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842670187] [2020-11-22 13:05:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 13:05:19,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842670187] [2020-11-22 13:05:19,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99052875] [2020-11-22 13:05:19,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:19,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-22 13:05:19,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:19,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 13:05:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 13:05:19,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 13:05:19,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:05:19,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 9] total 13 [2020-11-22 13:05:19,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602842608] [2020-11-22 13:05:19,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:05:19,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:19,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:05:19,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:05:19,989 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-11-22 13:05:20,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:20,012 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-11-22 13:05:20,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:20,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-22 13:05:20,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:20,013 INFO L225 Difference]: With dead ends: 23 [2020-11-22 13:05:20,013 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:20,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:05:20,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:20,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:20,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:20,015 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-11-22 13:05:20,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:20,015 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:20,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:05:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:20,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:20,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 13:05:20,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:20,255 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-11-22 13:05:20,255 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-11-22 13:05:20,255 INFO L274 CegarLoopResult]: For program point id2EXIT(lines 16 21) no Hoare annotation was computed. [2020-11-22 13:05:20,255 INFO L277 CegarLoopResult]: At program point id2ENTRY(lines 16 21) the Hoare annotation is: true [2020-11-22 13:05:20,255 INFO L274 CegarLoopResult]: For program point id2FINAL(lines 16 21) no Hoare annotation was computed. [2020-11-22 13:05:20,255 INFO L277 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-11-22 13:05:20,256 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:20,256 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:20,256 INFO L274 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-11-22 13:05:20,256 INFO L274 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-11-22 13:05:20,256 INFO L277 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-11-22 13:05:20,256 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-22 13:05:20,256 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 13:05:20,256 INFO L274 CegarLoopResult]: For program point L23(lines 23 29) no Hoare annotation was computed. [2020-11-22 13:05:20,257 INFO L274 CegarLoopResult]: For program point idFINAL(lines 9 14) no Hoare annotation was computed. [2020-11-22 13:05:20,257 INFO L277 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: true [2020-11-22 13:05:20,257 INFO L274 CegarLoopResult]: For program point idEXIT(lines 9 14) no Hoare annotation was computed. [2020-11-22 13:05:20,257 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-11-22 13:05:20,257 INFO L274 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-11-22 13:05:20,257 INFO L277 CegarLoopResult]: At program point idENTRY(lines 9 14) the Hoare annotation is: true [2020-11-22 13:05:20,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:20 BoogieIcfgContainer [2020-11-22 13:05:20,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:20,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:20,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:20,262 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:20,263 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:18" (3/4) ... [2020-11-22 13:05:20,266 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:20,274 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2020-11-22 13:05:20,274 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2020-11-22 13:05:20,283 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-22 13:05:20,283 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 13:05:20,284 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:20,286 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:20,333 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_432bb41f-47a3-4221-a778-96efd0234803/bin/utaipan/witness.graphml [2020-11-22 13:05:20,333 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:20,335 INFO L168 Benchmark]: Toolchain (without parser) took 2501.16 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 60.0 MB in the beginning and 89.4 MB in the end (delta: -29.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:20,335 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 96.5 MB. Free memory is still 76.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:20,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.22 ms. Allocated memory is still 96.5 MB. Free memory was 59.8 MB in the beginning and 73.7 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:20,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.52 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 72.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:20,337 INFO L168 Benchmark]: Boogie Preprocessor took 17.34 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 71.6 MB in the end (delta: 760.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:20,338 INFO L168 Benchmark]: RCFGBuilder took 426.92 ms. Allocated memory is still 96.5 MB. Free memory was 71.2 MB in the beginning and 56.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:20,338 INFO L168 Benchmark]: TraceAbstraction took 1715.76 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 55.6 MB in the beginning and 92.4 MB in the end (delta: -36.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:20,339 INFO L168 Benchmark]: Witness Printer took 71.12 ms. Allocated memory is still 117.4 MB. Free memory was 92.4 MB in the beginning and 89.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:20,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 96.5 MB. Free memory is still 76.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.22 ms. Allocated memory is still 96.5 MB. Free memory was 59.8 MB in the beginning and 73.7 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.52 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 72.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.34 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 71.6 MB in the end (delta: 760.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 426.92 ms. Allocated memory is still 96.5 MB. Free memory was 71.2 MB in the beginning and 56.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1715.76 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 55.6 MB in the beginning and 92.4 MB in the end (delta: -36.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 71.12 ms. Allocated memory is still 117.4 MB. Free memory was 92.4 MB in the beginning and 89.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 2 SDslu, 193 SDs, 0 SdLazy, 34 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, 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, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 4400 SizeOfPredicates, 3 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 8/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...