./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label58.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_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label58.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/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 23782966f6a708a53e28f8777b4243888f62f572 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 12:56:17,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:17,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:17,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:17,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:17,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:17,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:17,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:17,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:17,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:17,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:17,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:17,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:17,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:17,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:17,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:17,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:17,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:17,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:17,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:17,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:17,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:17,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:17,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:17,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:17,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:17,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:17,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:17,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:17,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:17,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:17,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:17,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:17,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:17,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:17,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:17,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:17,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:17,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:17,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:17,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:17,582 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:56:17,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:17,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:17,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:17,614 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:17,615 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:17,615 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:17,615 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:17,615 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:17,616 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:17,616 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:17,616 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:17,616 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:17,617 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:17,617 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:17,617 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:17,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:17,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:17,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:17,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:17,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:17,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:17,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:17,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:17,620 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:17,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:17,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:17,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:17,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:17,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:17,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:17,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:17,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:17,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:17,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:17,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:17,623 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:17,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:17,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:17,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:17,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:17,624 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_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23782966f6a708a53e28f8777b4243888f62f572 [2020-11-22 12:56:17,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:17,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:17,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:17,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:17,908 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:17,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label58.c [2020-11-22 12:56:17,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/data/feae0e8ba/2011bb6ce21644d88a84c988624fc3f0/FLAGd52a795ce [2020-11-22 12:56:18,616 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:18,618 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/sv-benchmarks/c/eca-rers2012/Problem02_label58.c [2020-11-22 12:56:18,638 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/data/feae0e8ba/2011bb6ce21644d88a84c988624fc3f0/FLAGd52a795ce [2020-11-22 12:56:18,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/data/feae0e8ba/2011bb6ce21644d88a84c988624fc3f0 [2020-11-22 12:56:18,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:18,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:18,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:18,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:18,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:18,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:18" (1/1) ... [2020-11-22 12:56:19,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a726025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:18, skipping insertion in model container [2020-11-22 12:56:19,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:18" (1/1) ... [2020-11-22 12:56:19,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:19,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:19,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:19,490 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:19,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:19,668 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:19,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19 WrapperNode [2020-11-22 12:56:19,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:19,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:19,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:19,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:19,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:19,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:19,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:19,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:19,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:19,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:19,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:19,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:19,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/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 12:56:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:56:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:19,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:22,616 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:22,616 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:56:22,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:22 BoogieIcfgContainer [2020-11-22 12:56:22,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:22,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:22,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:22,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:22,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:18" (1/3) ... [2020-11-22 12:56:22,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5333e90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:22, skipping insertion in model container [2020-11-22 12:56:22,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (2/3) ... [2020-11-22 12:56:22,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5333e90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:22, skipping insertion in model container [2020-11-22 12:56:22,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:22" (3/3) ... [2020-11-22 12:56:22,627 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label58.c [2020-11-22 12:56:22,637 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:22,642 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:56:22,654 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:56:22,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:22,677 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:22,677 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:22,677 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:22,677 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:22,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:22,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:22,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:22,700 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-22 12:56:22,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-22 12:56:22,711 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:22,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:22,712 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:22,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:22,718 INFO L82 PathProgramCache]: Analyzing trace with hash -216554169, now seen corresponding path program 1 times [2020-11-22 12:56:22,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:22,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838086302] [2020-11-22 12:56:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:23,173 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 12:56:23,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838086302] [2020-11-22 12:56:23,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:23,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:56:23,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907316668] [2020-11-22 12:56:23,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:23,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:23,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:23,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:23,198 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-22 12:56:23,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:23,856 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-22 12:56:23,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:23,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-22 12:56:23,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:23,876 INFO L225 Difference]: With dead ends: 251 [2020-11-22 12:56:23,876 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 12:56:23,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:23,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 12:56:23,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 12:56:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 12:56:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2020-11-22 12:56:23,959 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2020-11-22 12:56:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:23,962 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2020-11-22 12:56:23,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2020-11-22 12:56:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-22 12:56:23,971 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:23,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:23,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:56:23,971 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:23,974 INFO L82 PathProgramCache]: Analyzing trace with hash -125443038, now seen corresponding path program 1 times [2020-11-22 12:56:23,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:23,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80481047] [2020-11-22 12:56:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:24,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80481047] [2020-11-22 12:56:24,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:24,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:56:24,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98019132] [2020-11-22 12:56:24,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:24,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:24,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:24,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:24,171 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand 3 states. [2020-11-22 12:56:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:24,731 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2020-11-22 12:56:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:24,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-22 12:56:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:24,734 INFO L225 Difference]: With dead ends: 405 [2020-11-22 12:56:24,734 INFO L226 Difference]: Without dead ends: 243 [2020-11-22 12:56:24,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-11-22 12:56:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-11-22 12:56:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-22 12:56:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 398 transitions. [2020-11-22 12:56:24,776 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 398 transitions. Word has length 85 [2020-11-22 12:56:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:24,779 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 398 transitions. [2020-11-22 12:56:24,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 398 transitions. [2020-11-22 12:56:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-22 12:56:24,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:24,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:24,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:56:24,789 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:24,789 INFO L82 PathProgramCache]: Analyzing trace with hash 97018732, now seen corresponding path program 1 times [2020-11-22 12:56:24,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:24,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917970293] [2020-11-22 12:56:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:24,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917970293] [2020-11-22 12:56:24,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34251901] [2020-11-22 12:56:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/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 12:56:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:25,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:56:25,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 12:56:25,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 12:56:25,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:56:25,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-22 12:56:25,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214383692] [2020-11-22 12:56:25,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:25,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:25,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:25,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:25,233 INFO L87 Difference]: Start difference. First operand 243 states and 398 transitions. Second operand 3 states. [2020-11-22 12:56:25,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:25,667 INFO L93 Difference]: Finished difference Result 725 states and 1191 transitions. [2020-11-22 12:56:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:25,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-22 12:56:25,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:25,673 INFO L225 Difference]: With dead ends: 725 [2020-11-22 12:56:25,673 INFO L226 Difference]: Without dead ends: 483 [2020-11-22 12:56:25,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-22 12:56:25,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-22 12:56:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-22 12:56:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 758 transitions. [2020-11-22 12:56:25,720 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 758 transitions. Word has length 89 [2020-11-22 12:56:25,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:25,721 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 758 transitions. [2020-11-22 12:56:25,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:25,721 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 758 transitions. [2020-11-22 12:56:25,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-22 12:56:25,736 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:25,741 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:25,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 12:56:25,957 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:25,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:25,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1698396190, now seen corresponding path program 1 times [2020-11-22 12:56:25,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:25,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132696843] [2020-11-22 12:56:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 12:56:26,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132696843] [2020-11-22 12:56:26,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585344114] [2020-11-22 12:56:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:26,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:56:26,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 12:56:26,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 12:56:26,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:56:26,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-11-22 12:56:26,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355237125] [2020-11-22 12:56:26,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:26,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:26,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:26,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:56:26,211 INFO L87 Difference]: Start difference. First operand 483 states and 758 transitions. Second operand 4 states. [2020-11-22 12:56:26,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:26,828 INFO L93 Difference]: Finished difference Result 1125 states and 1790 transitions. [2020-11-22 12:56:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:26,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-22 12:56:26,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:26,831 INFO L225 Difference]: With dead ends: 1125 [2020-11-22 12:56:26,832 INFO L226 Difference]: Without dead ends: 643 [2020-11-22 12:56:26,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:56:26,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-22 12:56:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-22 12:56:26,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-22 12:56:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 943 transitions. [2020-11-22 12:56:26,893 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 943 transitions. Word has length 98 [2020-11-22 12:56:26,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:26,893 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 943 transitions. [2020-11-22 12:56:26,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 943 transitions. [2020-11-22 12:56:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-22 12:56:26,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:26,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:27,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:27,125 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:27,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:27,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1884272918, now seen corresponding path program 1 times [2020-11-22 12:56:27,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:27,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307481050] [2020-11-22 12:56:27,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 12:56:27,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307481050] [2020-11-22 12:56:27,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:27,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:56:27,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266354551] [2020-11-22 12:56:27,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:27,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:27,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:27,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:27,208 INFO L87 Difference]: Start difference. First operand 643 states and 943 transitions. Second operand 3 states. [2020-11-22 12:56:27,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:27,713 INFO L93 Difference]: Finished difference Result 1843 states and 2694 transitions. [2020-11-22 12:56:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:27,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-11-22 12:56:27,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:27,715 INFO L225 Difference]: With dead ends: 1843 [2020-11-22 12:56:27,715 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:56:27,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:27,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:56:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:56:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:56:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:56:27,719 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2020-11-22 12:56:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:27,719 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:56:27,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:56:27,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:56:27,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:56:27,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:56:27,836 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-22 12:56:27,836 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-22 12:56:27,837 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-22 12:56:27,837 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-22 12:56:27,837 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-22 12:56:27,837 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-22 12:56:27,837 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-22 12:56:27,837 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-22 12:56:27,837 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-22 12:56:27,837 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-22 12:56:27,837 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-22 12:56:27,838 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-22 12:56:27,838 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-22 12:56:27,838 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-22 12:56:27,838 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-22 12:56:27,838 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-22 12:56:27,838 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-22 12:56:27,838 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-22 12:56:27,838 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-22 12:56:27,838 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-22 12:56:27,838 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-22 12:56:27,838 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-22 12:56:27,839 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-22 12:56:27,839 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-22 12:56:27,839 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-22 12:56:27,839 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-22 12:56:27,839 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:56:27,839 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-22 12:56:27,839 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-22 12:56:27,839 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-22 12:56:27,839 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-22 12:56:27,839 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-22 12:56:27,839 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-22 12:56:27,840 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-22 12:56:27,840 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-22 12:56:27,840 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-22 12:56:27,840 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:56:27,840 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-22 12:56:27,840 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-22 12:56:27,840 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-22 12:56:27,840 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-22 12:56:27,840 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-22 12:56:27,840 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-22 12:56:27,840 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-22 12:56:27,841 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-22 12:56:27,841 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-22 12:56:27,841 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-22 12:56:27,841 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-22 12:56:27,841 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-22 12:56:27,841 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-22 12:56:27,841 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-22 12:56:27,841 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-22 12:56:27,841 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-22 12:56:27,845 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (or (<= ~a11~0 0) (= ~a19~0 1) (<= ~a28~0 10)) [2020-11-22 12:56:27,845 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-22 12:56:27,845 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-22 12:56:27,845 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-22 12:56:27,845 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-22 12:56:27,846 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-22 12:56:27,847 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-22 12:56:27,847 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-22 12:56:27,847 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-22 12:56:27,847 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:56:27,848 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-22 12:56:27,848 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-22 12:56:27,848 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (or (<= ~a11~0 0) (= ~a19~0 1) (<= ~a28~0 10)) [2020-11-22 12:56:27,848 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-22 12:56:27,849 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-22 12:56:27,849 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-22 12:56:27,849 INFO L274 CegarLoopResult]: For program point L487-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 12:56:27,849 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-22 12:56:27,849 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-22 12:56:27,849 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-22 12:56:27,849 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-22 12:56:27,850 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-22 12:56:27,850 INFO L274 CegarLoopResult]: For program point L490-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 12:56:27,850 INFO L274 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-11-22 12:56:27,850 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-22 12:56:27,850 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-22 12:56:27,850 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-22 12:56:27,850 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-22 12:56:27,853 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-22 12:56:27,853 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-22 12:56:27,853 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-22 12:56:27,853 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-22 12:56:27,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:27 BoogieIcfgContainer [2020-11-22 12:56:27,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:27,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:27,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:27,878 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:27,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:22" (3/4) ... [2020-11-22 12:56:27,882 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:56:27,920 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2020-11-22 12:56:27,923 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-22 12:56:27,925 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:56:27,927 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:56:28,109 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6f7dd55c-1150-4d77-9c05-c74c6c7346e1/bin/utaipan/witness.graphml [2020-11-22 12:56:28,109 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:28,111 INFO L168 Benchmark]: Toolchain (without parser) took 9126.78 ms. Allocated memory was 142.6 MB in the beginning and 232.8 MB in the end (delta: 90.2 MB). Free memory was 112.7 MB in the beginning and 80.7 MB in the end (delta: 32.0 MB). Peak memory consumption was 122.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:28,111 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 50.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:28,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.61 ms. Allocated memory is still 142.6 MB. Free memory was 112.4 MB in the beginning and 102.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:28,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.41 ms. Allocated memory is still 142.6 MB. Free memory was 102.7 MB in the beginning and 97.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:28,113 INFO L168 Benchmark]: Boogie Preprocessor took 113.39 ms. Allocated memory is still 142.6 MB. Free memory was 97.4 MB in the beginning and 92.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:28,113 INFO L168 Benchmark]: RCFGBuilder took 2725.10 ms. Allocated memory was 142.6 MB in the beginning and 192.9 MB in the end (delta: 50.3 MB). Free memory was 92.8 MB in the beginning and 126.3 MB in the end (delta: -33.5 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:28,114 INFO L168 Benchmark]: TraceAbstraction took 5256.89 ms. Allocated memory was 192.9 MB in the beginning and 232.8 MB in the end (delta: 39.8 MB). Free memory was 126.3 MB in the beginning and 96.4 MB in the end (delta: 29.9 MB). Peak memory consumption was 68.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:28,114 INFO L168 Benchmark]: Witness Printer took 231.70 ms. Allocated memory is still 232.8 MB. Free memory was 96.4 MB in the beginning and 80.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:28,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 50.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 684.61 ms. Allocated memory is still 142.6 MB. Free memory was 112.4 MB in the beginning and 102.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.41 ms. Allocated memory is still 142.6 MB. Free memory was 102.7 MB in the beginning and 97.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 113.39 ms. Allocated memory is still 142.6 MB. Free memory was 97.4 MB in the beginning and 92.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2725.10 ms. Allocated memory was 142.6 MB in the beginning and 192.9 MB in the end (delta: 50.3 MB). Free memory was 92.8 MB in the beginning and 126.3 MB in the end (delta: -33.5 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5256.89 ms. Allocated memory was 192.9 MB in the beginning and 232.8 MB in the end (delta: 39.8 MB). Free memory was 126.3 MB in the beginning and 96.4 MB in the end (delta: 29.9 MB). Peak memory consumption was 68.7 MB. Max. memory is 16.1 GB. * Witness Printer took 231.70 ms. Allocated memory is still 232.8 MB. Free memory was 96.4 MB in the beginning and 80.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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 - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (a11 <= 0 || a19 == 1) || a28 <= 10 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (a11 <= 0 || a19 == 1) || a28 <= 10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 453 SDslu, 23 SDs, 0 SdLazy, 1298 SolverSat, 439 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 383 GetRequests, 372 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 21 HoareAnnotationTreeSize, 3 FomulaSimplifications, 218 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 52 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 638 NumberOfCodeBlocks, 638 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 816 ConstructedInterpolants, 0 QuantifiedInterpolants, 161592 SizeOfPredicates, 1 NumberOfNonLiveVariables, 501 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 127/138 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...