./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o5-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d39666f7b9e3c393826226f879477647e7209cc ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:03:04,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:03:04,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:03:04,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:03:04,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:03:04,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:03:04,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:03:04,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:03:04,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:03:04,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:03:04,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:03:04,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:03:04,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:03:04,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:03:04,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:03:04,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:03:04,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:03:04,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:03:04,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:03:04,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:03:04,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:03:04,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:03:04,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:03:04,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:03:04,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:03:04,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:03:04,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:03:04,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:03:04,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:03:04,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:03:04,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:03:04,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:03:04,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:03:04,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:03:04,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:03:04,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:03:04,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:03:04,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:03:04,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:03:04,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:03:04,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:03:04,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:03:04,922 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:03:04,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:03:04,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:03:04,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:03:04,924 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:03:04,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:03:04,924 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:03:04,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:03:04,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:03:04,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:03:04,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:03:04,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:03:04,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:03:04,926 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:03:04,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:03:04,926 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:03:04,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:03:04,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:03:04,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:03:04,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:03:04,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:03:04,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:03:04,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:03:04,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:03:04,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:03:04,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:03:04,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:03:04,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:03:04,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/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(__VERIFIER_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 -> 8d39666f7b9e3c393826226f879477647e7209cc [2019-10-22 09:03:04,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:03:04,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:03:04,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:03:04,972 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:03:04,973 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:03:04,973 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id_b3_o5-2.c [2019-10-22 09:03:05,027 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/data/ba5c24354/6be8834373834f29ac9c05d7d12ce5c0/FLAGd49592b0b [2019-10-22 09:03:05,422 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:03:05,423 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/sv-benchmarks/c/recursive-simple/id_b3_o5-2.c [2019-10-22 09:03:05,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/data/ba5c24354/6be8834373834f29ac9c05d7d12ce5c0/FLAGd49592b0b [2019-10-22 09:03:05,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/data/ba5c24354/6be8834373834f29ac9c05d7d12ce5c0 [2019-10-22 09:03:05,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:03:05,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:03:05,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:03:05,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:03:05,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:03:05,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4350f7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05, skipping insertion in model container [2019-10-22 09:03:05,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,458 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:03:05,471 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:03:05,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:03:05,607 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:03:05,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:03:05,702 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:03:05,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05 WrapperNode [2019-10-22 09:03:05,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:03:05,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:03:05,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:03:05,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:03:05,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:03:05,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:03:05,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:03:05,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:03:05,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:03:05,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:03:05,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:03:05,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:03:05,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/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 [2019-10-22 09:03:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:03:05,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:03:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-10-22 09:03:05,838 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-10-22 09:03:06,052 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:03:06,054 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 09:03:06,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:03:06 BoogieIcfgContainer [2019-10-22 09:03:06,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:03:06,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:03:06,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:03:06,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:03:06,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:03:05" (1/3) ... [2019-10-22 09:03:06,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790d6add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:03:06, skipping insertion in model container [2019-10-22 09:03:06,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (2/3) ... [2019-10-22 09:03:06,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790d6add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:03:06, skipping insertion in model container [2019-10-22 09:03:06,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:03:06" (3/3) ... [2019-10-22 09:03:06,066 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c [2019-10-22 09:03:06,077 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:03:06,086 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:03:06,099 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:03:06,123 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:03:06,123 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:03:06,123 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:03:06,124 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:03:06,124 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:03:06,124 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:03:06,124 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:03:06,124 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:03:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 09:03:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 09:03:06,148 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:03:06,148 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:03:06,150 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:03:06,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:06,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1224902363, now seen corresponding path program 1 times [2019-10-22 09:03:06,165 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:03:06,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428037426] [2019-10-22 09:03:06,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:06,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:06,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:03:06,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428037426] [2019-10-22 09:03:06,349 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:03:06,349 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:03:06,349 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288417224] [2019-10-22 09:03:06,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:03:06,355 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:03:06,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:03:06,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:03:06,391 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2019-10-22 09:03:06,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:03:06,454 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-10-22 09:03:06,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:03:06,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-22 09:03:06,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:03:06,466 INFO L225 Difference]: With dead ends: 28 [2019-10-22 09:03:06,467 INFO L226 Difference]: Without dead ends: 15 [2019-10-22 09:03:06,470 INFO L600 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 [2019-10-22 09:03:06,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-22 09:03:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-22 09:03:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-22 09:03:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-10-22 09:03:06,514 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2019-10-22 09:03:06,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:03:06,515 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-10-22 09:03:06,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:03:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-10-22 09:03:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 09:03:06,522 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:03:06,522 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:03:06,522 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:03:06,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:06,523 INFO L82 PathProgramCache]: Analyzing trace with hash 510739163, now seen corresponding path program 1 times [2019-10-22 09:03:06,523 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:03:06,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473112048] [2019-10-22 09:03:06,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:06,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:06,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:03:06,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473112048] [2019-10-22 09:03:06,735 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:03:06,736 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:03:06,736 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915887436] [2019-10-22 09:03:06,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:03:06,738 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:03:06,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:03:06,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:03:06,739 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 7 states. [2019-10-22 09:03:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:03:06,778 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2019-10-22 09:03:06,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:03:06,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-10-22 09:03:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:03:06,781 INFO L225 Difference]: With dead ends: 27 [2019-10-22 09:03:06,781 INFO L226 Difference]: Without dead ends: 19 [2019-10-22 09:03:06,782 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:03:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-22 09:03:06,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2019-10-22 09:03:06,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 09:03:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-10-22 09:03:06,792 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 16 [2019-10-22 09:03:06,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:03:06,792 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-10-22 09:03:06,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:03:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-10-22 09:03:06,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 09:03:06,795 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:03:06,795 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:03:06,796 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:03:06,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:06,797 INFO L82 PathProgramCache]: Analyzing trace with hash 539368314, now seen corresponding path program 1 times [2019-10-22 09:03:06,797 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:03:06,797 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239758961] [2019-10-22 09:03:06,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:06,799 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:06,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:03:06,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239758961] [2019-10-22 09:03:06,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990314707] [2019-10-22 09:03:06,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/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 [2019-10-22 09:03:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:07,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:03:07,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:03:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:03:07,095 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:03:07,095 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-10-22 09:03:07,095 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412461406] [2019-10-22 09:03:07,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 09:03:07,096 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:03:07,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 09:03:07,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:03:07,097 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 9 states. [2019-10-22 09:03:07,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:03:07,149 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-22 09:03:07,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:03:07,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-10-22 09:03:07,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:03:07,150 INFO L225 Difference]: With dead ends: 23 [2019-10-22 09:03:07,150 INFO L226 Difference]: Without dead ends: 19 [2019-10-22 09:03:07,151 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:03:07,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-22 09:03:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-22 09:03:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 09:03:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-22 09:03:07,156 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2019-10-22 09:03:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:03:07,156 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-22 09:03:07,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 09:03:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-22 09:03:07,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 09:03:07,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:03:07,157 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:03:07,357 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:03:07,358 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:03:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:07,358 INFO L82 PathProgramCache]: Analyzing trace with hash -747825770, now seen corresponding path program 1 times [2019-10-22 09:03:07,358 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:03:07,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058532655] [2019-10-22 09:03:07,358 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:07,359 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:07,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 09:03:07,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058532655] [2019-10-22 09:03:07,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106971128] [2019-10-22 09:03:07,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/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 [2019-10-22 09:03:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:07,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:03:07,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:03:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 09:03:07,590 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:03:07,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2019-10-22 09:03:07,591 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451431472] [2019-10-22 09:03:07,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 09:03:07,591 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:03:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 09:03:07,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:03:07,592 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 11 states. [2019-10-22 09:03:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:03:07,662 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-22 09:03:07,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:03:07,662 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2019-10-22 09:03:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:03:07,663 INFO L225 Difference]: With dead ends: 31 [2019-10-22 09:03:07,663 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 09:03:07,664 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:03:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 09:03:07,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-10-22 09:03:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-22 09:03:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-10-22 09:03:07,667 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 23 [2019-10-22 09:03:07,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:03:07,667 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-10-22 09:03:07,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 09:03:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-10-22 09:03:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 09:03:07,670 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:03:07,671 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:03:07,871 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:03:07,871 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:03:07,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:07,872 INFO L82 PathProgramCache]: Analyzing trace with hash -719196619, now seen corresponding path program 2 times [2019-10-22 09:03:07,872 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:03:07,872 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334198503] [2019-10-22 09:03:07,872 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:07,873 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:07,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 09:03:08,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334198503] [2019-10-22 09:03:08,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786302472] [2019-10-22 09:03:08,014 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:03:08,059 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:03:08,059 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:03:08,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 09:03:08,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:03:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 09:03:08,091 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:03:08,091 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-10-22 09:03:08,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343165579] [2019-10-22 09:03:08,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 09:03:08,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:03:08,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 09:03:08,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:03:08,093 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 12 states. [2019-10-22 09:03:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:03:08,173 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-10-22 09:03:08,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 09:03:08,174 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2019-10-22 09:03:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:03:08,175 INFO L225 Difference]: With dead ends: 27 [2019-10-22 09:03:08,175 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 09:03:08,176 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-10-22 09:03:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 09:03:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-22 09:03:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-22 09:03:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-10-22 09:03:08,190 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 23 [2019-10-22 09:03:08,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:03:08,190 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-10-22 09:03:08,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 09:03:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-10-22 09:03:08,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 09:03:08,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:03:08,191 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:03:08,394 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:03:08,394 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:03:08,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:08,394 INFO L82 PathProgramCache]: Analyzing trace with hash -923746005, now seen corresponding path program 2 times [2019-10-22 09:03:08,395 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:03:08,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84752971] [2019-10-22 09:03:08,395 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:08,395 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:08,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 09:03:08,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84752971] [2019-10-22 09:03:08,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892046763] [2019-10-22 09:03:08,586 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:03:08,621 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:03:08,622 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:03:08,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:03:08,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:03:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-22 09:03:08,679 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:03:08,679 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2019-10-22 09:03:08,679 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322570239] [2019-10-22 09:03:08,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:03:08,682 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:03:08,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:03:08,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:03:08,683 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2019-10-22 09:03:08,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:03:08,694 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-22 09:03:08,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:03:08,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 09:03:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:03:08,696 INFO L225 Difference]: With dead ends: 23 [2019-10-22 09:03:08,696 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:03:08,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:03:08,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:03:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:03:08,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:03:08,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:03:08,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-10-22 09:03:08,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:03:08,698 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:03:08,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:03:08,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:03:08,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:03:08,900 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:03:08,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:03:08,914 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:03:08,914 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:03:08,914 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:03:08,914 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2019-10-22 09:03:08,915 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-10-22 09:03:08,915 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2019-10-22 09:03:08,915 INFO L446 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: true [2019-10-22 09:03:08,915 INFO L443 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-10-22 09:03:08,915 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 17) no Hoare annotation was computed. [2019-10-22 09:03:08,916 INFO L443 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2019-10-22 09:03:08,916 INFO L443 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2019-10-22 09:03:08,916 INFO L446 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2019-10-22 09:03:08,916 INFO L443 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2019-10-22 09:03:08,916 INFO L446 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: true [2019-10-22 09:03:08,916 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 09:03:08,916 INFO L443 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-10-22 09:03:08,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:03:08 BoogieIcfgContainer [2019-10-22 09:03:08,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:03:08,921 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:03:08,921 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:03:08,921 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:03:08,922 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:03:06" (3/4) ... [2019-10-22 09:03:08,926 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:03:08,934 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2019-10-22 09:03:08,939 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 09:03:08,939 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 09:03:08,988 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ecf1a89e-f972-48e8-8397-7d8b208794cb/bin/uautomizer/witness.graphml [2019-10-22 09:03:08,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:03:08,990 INFO L168 Benchmark]: Toolchain (without parser) took 3546.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 941.8 MB in the beginning and 948.3 MB in the end (delta: -6.5 MB). Peak memory consumption was 156.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:08,991 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:03:08,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 940.4 MB in the beginning and 1.2 GB in the end (delta: -222.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:08,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:08,992 INFO L168 Benchmark]: Boogie Preprocessor took 17.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:08,993 INFO L168 Benchmark]: RCFGBuilder took 303.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:08,993 INFO L168 Benchmark]: TraceAbstraction took 2863.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 951.6 MB in the end (delta: 181.8 MB). Peak memory consumption was 181.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:08,994 INFO L168 Benchmark]: Witness Printer took 67.69 ms. Allocated memory is still 1.2 GB. Free memory was 951.6 MB in the beginning and 948.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:08,996 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 258.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 940.4 MB in the beginning and 1.2 GB in the end (delta: -222.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 303.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2863.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 951.6 MB in the end (delta: 181.8 MB). Peak memory consumption was 181.8 MB. Max. memory is 11.5 GB. * Witness Printer took 67.69 ms. Allocated memory is still 1.2 GB. Free memory was 951.6 MB in the beginning and 948.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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, 16 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 17 SDslu, 371 SDs, 0 SdLazy, 123 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=5, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 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, 1.0s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 7973 SizeOfPredicates, 8 NumberOfNonLiveVariables, 240 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 98/138 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...