./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_b5_o10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b5_o10-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06e263f62ccb25342881e7c795aa9241a1fa8bd0 .......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:53:56,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:53:56,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:53:56,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:53:56,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:53:56,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:53:56,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:53:56,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:53:56,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:53:56,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:53:56,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:53:56,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:53:56,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:53:56,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:53:56,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:53:56,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:53:56,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:53:56,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:53:56,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:53:56,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:53:56,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:53:56,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:53:56,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:53:56,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:53:56,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:53:56,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:53:56,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:53:56,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:53:56,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:53:56,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:53:56,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:53:56,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:53:56,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:53:56,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:53:56,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:53:56,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:53:56,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:53:56,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:53:56,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:53:56,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:53:56,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:53:56,862 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:53:56,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:53:56,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:53:56,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:53:56,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:53:56,916 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:53:56,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:53:56,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:53:56,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:53:56,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:53:56,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:53:56,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:53:56,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:53:56,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:53:56,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:53:56,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:53:56,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:53:56,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:53:56,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:53:56,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:53:56,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:53:56,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:53:56,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:53:56,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:53:56,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:53:56,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:53:56,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:53:56,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:53:56,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:53:56,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:53:56,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06e263f62ccb25342881e7c795aa9241a1fa8bd0 [2020-12-01 15:53:57,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:53:57,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:53:57,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:53:57,284 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:53:57,285 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:53:57,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id_b5_o10-2.c [2020-12-01 15:53:57,402 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/data/eefc0ed02/6417619af95f4cf8938c6bd74d2bcfa8/FLAG613f1591f [2020-12-01 15:53:57,994 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:53:57,994 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/sv-benchmarks/c/recursive-simple/id_b5_o10-2.c [2020-12-01 15:53:58,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/data/eefc0ed02/6417619af95f4cf8938c6bd74d2bcfa8/FLAG613f1591f [2020-12-01 15:53:58,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/data/eefc0ed02/6417619af95f4cf8938c6bd74d2bcfa8 [2020-12-01 15:53:58,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:53:58,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:53:58,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:53:58,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:53:58,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:53:58,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:53:58" (1/1) ... [2020-12-01 15:53:58,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17bd0b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58, skipping insertion in model container [2020-12-01 15:53:58,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:53:58" (1/1) ... [2020-12-01 15:53:58,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:53:58,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:53:58,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:53:58,617 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:53:58,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:53:58,661 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:53:58,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58 WrapperNode [2020-12-01 15:53:58,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:53:58,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:53:58,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:53:58,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:53:58,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58" (1/1) ... [2020-12-01 15:53:58,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58" (1/1) ... [2020-12-01 15:53:58,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:53:58,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:53:58,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:53:58,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:53:58,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58" (1/1) ... [2020-12-01 15:53:58,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58" (1/1) ... [2020-12-01 15:53:58,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58" (1/1) ... [2020-12-01 15:53:58,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58" (1/1) ... [2020-12-01 15:53:58,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58" (1/1) ... [2020-12-01 15:53:58,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58" (1/1) ... [2020-12-01 15:53:58,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58" (1/1) ... [2020-12-01 15:53:58,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:53:58,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:53:58,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:53:58,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:53:58,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/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 [2020-12-01 15:53:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:53:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:53:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:53:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-12-01 15:53:58,816 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-12-01 15:53:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:53:59,096 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:53:59,096 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-01 15:53:59,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:53:59 BoogieIcfgContainer [2020-12-01 15:53:59,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:53:59,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:53:59,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:53:59,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:53:59,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:53:58" (1/3) ... [2020-12-01 15:53:59,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cedad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:53:59, skipping insertion in model container [2020-12-01 15:53:59,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:53:58" (2/3) ... [2020-12-01 15:53:59,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cedad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:53:59, skipping insertion in model container [2020-12-01 15:53:59,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:53:59" (3/3) ... [2020-12-01 15:53:59,109 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2020-12-01 15:53:59,126 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:53:59,129 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:53:59,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:53:59,173 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:53:59,174 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:53:59,174 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:53:59,174 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:53:59,174 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:53:59,174 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:53:59,175 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:53:59,175 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:53:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-01 15:53:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:53:59,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:59,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:59,200 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:59,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:59,207 INFO L82 PathProgramCache]: Analyzing trace with hash -948071546, now seen corresponding path program 1 times [2020-12-01 15:53:59,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:59,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144207167] [2020-12-01 15:53:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:59,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:53:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:53:59,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144207167] [2020-12-01 15:53:59,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:59,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:53:59,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054473774] [2020-12-01 15:53:59,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:53:59,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:59,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:53:59,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:59,494 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-12-01 15:53:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:59,573 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-12-01 15:53:59,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:53:59,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-01 15:53:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:59,601 INFO L225 Difference]: With dead ends: 30 [2020-12-01 15:53:59,601 INFO L226 Difference]: Without dead ends: 16 [2020-12-01 15:53:59,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:59,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-01 15:53:59,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-01 15:53:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-01 15:53:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-12-01 15:53:59,667 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2020-12-01 15:53:59,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:59,668 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-12-01 15:53:59,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:53:59,669 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-01 15:53:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:53:59,670 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:59,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:59,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:53:59,672 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:59,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:59,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1034741369, now seen corresponding path program 1 times [2020-12-01 15:53:59,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:59,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961079673] [2020-12-01 15:53:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:53:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:53:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:59,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:53:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:53:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 15:53:59,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961079673] [2020-12-01 15:53:59,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:53:59,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:53:59,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113622973] [2020-12-01 15:53:59,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:53:59,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:53:59,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:53:59,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:59,877 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-12-01 15:53:59,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:53:59,927 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2020-12-01 15:53:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:53:59,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-01 15:53:59,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:53:59,931 INFO L225 Difference]: With dead ends: 28 [2020-12-01 15:53:59,932 INFO L226 Difference]: Without dead ends: 20 [2020-12-01 15:53:59,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:53:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-01 15:53:59,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-12-01 15:53:59,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-01 15:53:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-12-01 15:53:59,950 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 17 [2020-12-01 15:53:59,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:53:59,951 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-12-01 15:53:59,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:53:59,953 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-12-01 15:53:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:53:59,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:53:59,956 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:53:59,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:53:59,957 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:53:59,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:53:59,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1063370520, now seen corresponding path program 1 times [2020-12-01 15:53:59,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:53:59,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305955878] [2020-12-01 15:53:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:54:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:00,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:54:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 15:54:00,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305955878] [2020-12-01 15:54:00,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343495013] [2020-12-01 15:54:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/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 [2020-12-01 15:54:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:00,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 15:54:00,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:54:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 15:54:00,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:54:00,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-01 15:54:00,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204637023] [2020-12-01 15:54:00,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:54:00,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:00,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:54:00,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:54:00,401 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 9 states. [2020-12-01 15:54:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:00,453 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-12-01 15:54:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:54:00,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-01 15:54:00,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:00,456 INFO L225 Difference]: With dead ends: 24 [2020-12-01 15:54:00,456 INFO L226 Difference]: Without dead ends: 20 [2020-12-01 15:54:00,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:54:00,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-01 15:54:00,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-01 15:54:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-01 15:54:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-01 15:54:00,463 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2020-12-01 15:54:00,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:00,464 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-01 15:54:00,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:54:00,464 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-01 15:54:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 15:54:00,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:00,466 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:00,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-01 15:54:00,692 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:00,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash 758694231, now seen corresponding path program 1 times [2020-12-01 15:54:00,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:00,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037135535] [2020-12-01 15:54:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:00,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:54:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:54:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-01 15:54:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-01 15:54:00,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037135535] [2020-12-01 15:54:00,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:00,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:54:00,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901060805] [2020-12-01 15:54:00,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:54:00,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:00,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:54:00,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:54:00,815 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-12-01 15:54:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:00,835 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-12-01 15:54:00,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:54:00,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-12-01 15:54:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:00,841 INFO L225 Difference]: With dead ends: 20 [2020-12-01 15:54:00,841 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:54:00,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:54:00,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:54:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:54:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:54:00,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:54:00,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-12-01 15:54:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:00,843 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:54:00,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:54:00,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:54:00,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:54:00,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:54:00,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:54:00,865 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:54:00,865 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:54:00,865 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:54:00,866 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:54:00,866 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-12-01 15:54:00,866 INFO L262 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-12-01 15:54:00,866 INFO L262 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-12-01 15:54:00,867 INFO L265 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-12-01 15:54:00,867 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-12-01 15:54:00,867 INFO L262 CegarLoopResult]: For program point L13(lines 13 19) no Hoare annotation was computed. [2020-12-01 15:54:00,867 INFO L262 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-12-01 15:54:00,868 INFO L262 CegarLoopResult]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2020-12-01 15:54:00,868 INFO L262 CegarLoopResult]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2020-12-01 15:54:00,868 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-01 15:54:00,868 INFO L265 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-12-01 15:54:00,868 INFO L265 CegarLoopResult]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2020-12-01 15:54:00,868 INFO L262 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-12-01 15:54:00,869 INFO L262 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-12-01 15:54:00,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:54:00 BoogieIcfgContainer [2020-12-01 15:54:00,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:54:00,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:54:00,877 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:54:00,877 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:54:00,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:53:59" (3/4) ... [2020-12-01 15:54:00,881 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:54:00,888 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2020-12-01 15:54:00,896 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-01 15:54:00,896 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:54:00,896 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:54:00,897 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:54:00,957 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a98ccbb1-6a39-447a-95ac-7ff3d3ca9fc5/bin/uautomizer/witness.graphml [2020-12-01 15:54:00,957 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:54:00,959 INFO L168 Benchmark]: Toolchain (without parser) took 2614.31 ms. Allocated memory is still 104.9 MB. Free memory was 70.9 MB in the beginning and 40.9 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:00,959 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 104.9 MB. Free memory was 76.9 MB in the beginning and 76.9 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:54:00,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.93 ms. Allocated memory is still 104.9 MB. Free memory was 70.6 MB in the beginning and 82.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:00,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.60 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 80.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:54:00,961 INFO L168 Benchmark]: Boogie Preprocessor took 23.23 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 79.5 MB in the end (delta: 990.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:00,968 INFO L168 Benchmark]: RCFGBuilder took 371.04 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 67.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:00,969 INFO L168 Benchmark]: TraceAbstraction took 1774.74 ms. Allocated memory is still 104.9 MB. Free memory was 67.8 MB in the beginning and 43.0 MB in the end (delta: 24.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:00,970 INFO L168 Benchmark]: Witness Printer took 80.52 ms. Allocated memory is still 104.9 MB. Free memory was 43.0 MB in the beginning and 40.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:00,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 104.9 MB. Free memory was 76.9 MB in the beginning and 76.9 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.93 ms. Allocated memory is still 104.9 MB. Free memory was 70.6 MB in the beginning and 82.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.60 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 80.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.23 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 79.5 MB in the end (delta: 990.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 371.04 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 67.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1774.74 ms. Allocated memory is still 104.9 MB. Free memory was 67.8 MB in the beginning and 43.0 MB in the end (delta: 24.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 80.52 ms. Allocated memory is still 104.9 MB. Free memory was 43.0 MB in the beginning and 40.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 7 SDslu, 208 SDs, 0 SdLazy, 60 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2274 SizeOfPredicates, 1 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 23/27 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...