./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/stateful_check.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_dd163597-bb32-451c-9831-9216aa7b6738/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/stateful_check.c -s /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/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 1225f82562543767c482452e9133e4a69d5dae70 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:31,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:31,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:31,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:31,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:31,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:31,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:31,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:31,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:31,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:31,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:31,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:31,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:31,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:31,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:31,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:31,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:31,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:31,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:31,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:31,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:31,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:31,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:31,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:31,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:31,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:31,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:31,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:31,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:31,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:31,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:31,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:31,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:31,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:31,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:31,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:31,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:31,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:31,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:31,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:31,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:31,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:56:31,909 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:31,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:31,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:31,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:31,913 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:31,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:31,914 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:31,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:31,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:31,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:31,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:56:31,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:31,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:56:31,916 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:31,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:31,916 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:31,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:56:31,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:31,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:31,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:31,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:31,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:31,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:31,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:31,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:56:31,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:31,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:31,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:56:31,918 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_dd163597-bb32-451c-9831-9216aa7b6738/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 -> 1225f82562543767c482452e9133e4a69d5dae70 [2019-10-22 08:56:31,954 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:31,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:31,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:31,968 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:31,968 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:31,969 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/stateful_check.c [2019-10-22 08:56:32,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/bin/uautomizer/data/1edb5d6ae/f2b354c60540484c8430872a92e13287/FLAGe0aed3bb7 [2019-10-22 08:56:32,397 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:32,401 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/sv-benchmarks/c/ldv-regression/stateful_check.c [2019-10-22 08:56:32,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/bin/uautomizer/data/1edb5d6ae/f2b354c60540484c8430872a92e13287/FLAGe0aed3bb7 [2019-10-22 08:56:32,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/bin/uautomizer/data/1edb5d6ae/f2b354c60540484c8430872a92e13287 [2019-10-22 08:56:32,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:32,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:32,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:32,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:32,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:32,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:32" (1/1) ... [2019-10-22 08:56:32,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16afa5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:32, skipping insertion in model container [2019-10-22 08:56:32,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:32" (1/1) ... [2019-10-22 08:56:32,822 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:32,839 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:33,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:33,012 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:33,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:33,097 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:33,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33 WrapperNode [2019-10-22 08:56:33,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:33,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:33,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:33,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:33,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33" (1/1) ... [2019-10-22 08:56:33,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33" (1/1) ... [2019-10-22 08:56:33,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:33,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:33,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:33,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:33,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33" (1/1) ... [2019-10-22 08:56:33,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33" (1/1) ... [2019-10-22 08:56:33,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33" (1/1) ... [2019-10-22 08:56:33,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33" (1/1) ... [2019-10-22 08:56:33,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33" (1/1) ... [2019-10-22 08:56:33,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33" (1/1) ... [2019-10-22 08:56:33,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33" (1/1) ... [2019-10-22 08:56:33,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:33,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:33,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:33,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:33,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/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 08:56:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:33,452 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:33,452 INFO L284 CfgBuilder]: Removed 35 assume(true) statements. [2019-10-22 08:56:33,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:33 BoogieIcfgContainer [2019-10-22 08:56:33,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:33,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:33,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:33,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:33,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:32" (1/3) ... [2019-10-22 08:56:33,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c59cca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:33, skipping insertion in model container [2019-10-22 08:56:33,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:33" (2/3) ... [2019-10-22 08:56:33,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c59cca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:33, skipping insertion in model container [2019-10-22 08:56:33,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:33" (3/3) ... [2019-10-22 08:56:33,460 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2019-10-22 08:56:33,476 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:33,481 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-22 08:56:33,501 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-22 08:56:33,533 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:33,533 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:56:33,533 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:33,534 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:33,534 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:33,534 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:33,534 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:33,535 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-10-22 08:56:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:56:33,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:33,555 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:56:33,557 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:33,562 INFO L82 PathProgramCache]: Analyzing trace with hash 889605129, now seen corresponding path program 1 times [2019-10-22 08:56:33,570 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:33,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547819341] [2019-10-22 08:56:33,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:33,653 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 08:56:33,653 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547819341] [2019-10-22 08:56:33,654 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:33,654 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:56:33,654 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712116657] [2019-10-22 08:56:33,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:56:33,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:33,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:56:33,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:56:33,669 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2019-10-22 08:56:33,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:33,686 INFO L93 Difference]: Finished difference Result 89 states and 123 transitions. [2019-10-22 08:56:33,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:56:33,687 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 08:56:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:33,697 INFO L225 Difference]: With dead ends: 89 [2019-10-22 08:56:33,697 INFO L226 Difference]: Without dead ends: 42 [2019-10-22 08:56:33,699 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:56:33,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-22 08:56:33,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-10-22 08:56:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-22 08:56:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2019-10-22 08:56:33,725 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 6 [2019-10-22 08:56:33,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:33,725 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2019-10-22 08:56:33,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:56:33,725 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2019-10-22 08:56:33,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:56:33,726 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:33,726 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:33,726 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:33,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:33,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1804046918, now seen corresponding path program 1 times [2019-10-22 08:56:33,727 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:33,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953686199] [2019-10-22 08:56:33,727 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,727 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:33,754 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 08:56:33,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953686199] [2019-10-22 08:56:33,755 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:33,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:56:33,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453491639] [2019-10-22 08:56:33,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:33,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:33,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:33,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:33,757 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 3 states. [2019-10-22 08:56:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:33,796 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2019-10-22 08:56:33,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:33,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 08:56:33,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:33,798 INFO L225 Difference]: With dead ends: 70 [2019-10-22 08:56:33,798 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 08:56:33,799 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:33,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 08:56:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-10-22 08:56:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-10-22 08:56:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2019-10-22 08:56:33,808 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 85 transitions. Word has length 7 [2019-10-22 08:56:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:33,808 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 85 transitions. [2019-10-22 08:56:33,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2019-10-22 08:56:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:56:33,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:33,809 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:33,809 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:33,810 INFO L82 PathProgramCache]: Analyzing trace with hash -147365405, now seen corresponding path program 1 times [2019-10-22 08:56:33,810 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:33,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597524727] [2019-10-22 08:56:33,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:33,856 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 08:56:33,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597524727] [2019-10-22 08:56:33,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:33,857 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:33,857 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983786194] [2019-10-22 08:56:33,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:33,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:33,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:33,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:33,858 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand 3 states. [2019-10-22 08:56:33,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:33,940 INFO L93 Difference]: Finished difference Result 150 states and 212 transitions. [2019-10-22 08:56:33,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:33,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-22 08:56:33,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:33,942 INFO L225 Difference]: With dead ends: 150 [2019-10-22 08:56:33,942 INFO L226 Difference]: Without dead ends: 90 [2019-10-22 08:56:33,943 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:33,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-10-22 08:56:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2019-10-22 08:56:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-10-22 08:56:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 122 transitions. [2019-10-22 08:56:33,954 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 122 transitions. Word has length 15 [2019-10-22 08:56:33,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:33,954 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 122 transitions. [2019-10-22 08:56:33,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 122 transitions. [2019-10-22 08:56:33,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 08:56:33,955 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:33,955 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:33,955 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:33,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:33,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1293798555, now seen corresponding path program 1 times [2019-10-22 08:56:33,956 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:33,956 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030414444] [2019-10-22 08:56:33,956 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,956 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 08:56:34,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030414444] [2019-10-22 08:56:34,000 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:34,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:34,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618225974] [2019-10-22 08:56:34,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:34,001 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:34,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:34,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:34,002 INFO L87 Difference]: Start difference. First operand 87 states and 122 transitions. Second operand 3 states. [2019-10-22 08:56:34,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:34,021 INFO L93 Difference]: Finished difference Result 208 states and 300 transitions. [2019-10-22 08:56:34,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:34,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 08:56:34,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:34,023 INFO L225 Difference]: With dead ends: 208 [2019-10-22 08:56:34,023 INFO L226 Difference]: Without dead ends: 124 [2019-10-22 08:56:34,024 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:34,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-10-22 08:56:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2019-10-22 08:56:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-22 08:56:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 177 transitions. [2019-10-22 08:56:34,035 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 177 transitions. Word has length 22 [2019-10-22 08:56:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:34,035 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 177 transitions. [2019-10-22 08:56:34,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:34,035 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 177 transitions. [2019-10-22 08:56:34,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 08:56:34,036 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:34,036 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:34,036 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1319564790, now seen corresponding path program 1 times [2019-10-22 08:56:34,037 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,037 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866673222] [2019-10-22 08:56:34,037 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,037 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866673222] [2019-10-22 08:56:34,084 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907786171] [2019-10-22 08:56:34,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/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 08:56:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:56:34,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,139 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:34,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-10-22 08:56:34,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475437246] [2019-10-22 08:56:34,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:56:34,140 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:34,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:56:34,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:34,141 INFO L87 Difference]: Start difference. First operand 121 states and 177 transitions. Second operand 5 states. [2019-10-22 08:56:34,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:34,227 INFO L93 Difference]: Finished difference Result 344 states and 529 transitions. [2019-10-22 08:56:34,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:56:34,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-22 08:56:34,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:34,232 INFO L225 Difference]: With dead ends: 344 [2019-10-22 08:56:34,232 INFO L226 Difference]: Without dead ends: 226 [2019-10-22 08:56:34,232 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:34,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2019-10-22 08:56:34,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 217. [2019-10-22 08:56:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2019-10-22 08:56:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 327 transitions. [2019-10-22 08:56:34,249 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 327 transitions. Word has length 22 [2019-10-22 08:56:34,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:34,249 INFO L462 AbstractCegarLoop]: Abstraction has 217 states and 327 transitions. [2019-10-22 08:56:34,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:56:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 327 transitions. [2019-10-22 08:56:34,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 08:56:34,250 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:34,250 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:34,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:34,456 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:34,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1040975168, now seen corresponding path program 1 times [2019-10-22 08:56:34,457 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678027300] [2019-10-22 08:56:34,457 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,457 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 08:56:34,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678027300] [2019-10-22 08:56:34,519 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:34,519 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:56:34,519 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171962372] [2019-10-22 08:56:34,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:34,520 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:34,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:34,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:34,521 INFO L87 Difference]: Start difference. First operand 217 states and 327 transitions. Second operand 4 states. [2019-10-22 08:56:34,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:34,604 INFO L93 Difference]: Finished difference Result 629 states and 979 transitions. [2019-10-22 08:56:34,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:34,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-10-22 08:56:34,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:34,606 INFO L225 Difference]: With dead ends: 629 [2019-10-22 08:56:34,606 INFO L226 Difference]: Without dead ends: 415 [2019-10-22 08:56:34,608 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:34,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2019-10-22 08:56:34,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 313. [2019-10-22 08:56:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2019-10-22 08:56:34,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 487 transitions. [2019-10-22 08:56:34,628 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 487 transitions. Word has length 29 [2019-10-22 08:56:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:34,628 INFO L462 AbstractCegarLoop]: Abstraction has 313 states and 487 transitions. [2019-10-22 08:56:34,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:34,628 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 487 transitions. [2019-10-22 08:56:34,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 08:56:34,630 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:34,630 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:34,630 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:34,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1446791270, now seen corresponding path program 1 times [2019-10-22 08:56:34,631 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993698423] [2019-10-22 08:56:34,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,671 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:34,671 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:56:34,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:34 BoogieIcfgContainer [2019-10-22 08:56:34,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:34,702 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:34,702 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:34,702 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:34,702 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:33" (3/4) ... [2019-10-22 08:56:34,704 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:56:34,746 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_dd163597-bb32-451c-9831-9216aa7b6738/bin/uautomizer/witness.graphml [2019-10-22 08:56:34,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:34,748 INFO L168 Benchmark]: Toolchain (without parser) took 1938.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.5 MB). Free memory was 944.5 MB in the beginning and 1.0 GB in the end (delta: -103.7 MB). Peak memory consumption was 80.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:34,748 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:34,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.5 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -235.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:34,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:34,749 INFO L168 Benchmark]: Boogie Preprocessor took 19.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:34,750 INFO L168 Benchmark]: RCFGBuilder took 299.57 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: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:34,750 INFO L168 Benchmark]: TraceAbstraction took 1247.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 94.2 MB). Peak memory consumption was 94.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:34,751 INFO L168 Benchmark]: Witness Printer took 44.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:34,753 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.5 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -235.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 299.57 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: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1247.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 94.2 MB). Peak memory consumption was 94.2 MB. Max. memory is 11.5 GB. * Witness Printer took 44.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; VAL [ldv_mutex=1, open_called=0] [L74] int ldv_s_misc_fops_file_operations = 0; [L69] open_called = 0 [L70] return 0; VAL [ldv_mutex=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: VAL [ldv_mutex=1, open_called=0] [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; VAL [ldv_mutex=1, open_called=0] [L83] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: VAL [ldv_mutex=1, open_called=0] [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L52] return 0; VAL [ldv_mutex=1, open_called=0] [L91] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: VAL [ldv_mutex=1, open_called=0] [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L48] return 0; VAL [ldv_mutex=1, open_called=0] [L99] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: VAL [ldv_mutex=1, open_called=0] [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L34] COND FALSE !(\read(open_called)) VAL [ldv_mutex=1, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [ldv_mutex=1, open_called=0] [L17] ldv_mutex = 2 VAL [ldv_mutex=2, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [ldv_mutex=2, open_called=0] [L4] __VERIFIER_error() VAL [ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 5 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 297 SDtfs, 164 SDslu, 310 SDs, 0 SdLazy, 98 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=6, 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, 117 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 5084 SizeOfPredicates, 1 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 14/20 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 incorrect! Received shutdown request...