./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-loops/verisec_sendmail__tTflag_arr_one_loop_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector-loops/verisec_sendmail__tTflag_arr_one_loop_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/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 eda42c9201fdedd9f50669e53ef2af5b1d7cb675 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-02 08:46:42,416 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 08:46:42,417 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 08:46:42,423 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 08:46:42,423 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 08:46:42,424 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 08:46:42,424 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 08:46:42,425 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 08:46:42,426 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 08:46:42,426 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 08:46:42,427 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 08:46:42,427 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 08:46:42,427 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 08:46:42,428 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 08:46:42,428 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 08:46:42,429 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 08:46:42,429 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 08:46:42,430 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 08:46:42,431 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 08:46:42,432 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 08:46:42,432 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 08:46:42,433 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 08:46:42,434 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 08:46:42,434 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 08:46:42,434 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 08:46:42,434 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 08:46:42,435 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 08:46:42,435 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 08:46:42,436 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 08:46:42,436 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 08:46:42,436 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 08:46:42,437 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 08:46:42,437 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 08:46:42,437 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 08:46:42,437 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 08:46:42,438 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 08:46:42,438 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 08:46:42,445 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 08:46:42,445 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 08:46:42,445 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 08:46:42,445 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 08:46:42,446 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 08:46:42,446 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 08:46:42,446 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 08:46:42,446 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 08:46:42,446 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 08:46:42,446 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 08:46:42,447 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 08:46:42,447 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 08:46:42,447 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 08:46:42,447 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 08:46:42,447 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 08:46:42,447 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 08:46:42,447 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 08:46:42,447 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 08:46:42,448 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 08:46:42,448 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 08:46:42,448 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 08:46:42,448 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 08:46:42,448 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 08:46:42,448 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 08:46:42,448 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 08:46:42,449 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 08:46:42,449 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 08:46:42,449 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 08:46:42,449 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 08:46:42,449 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 08:46:42,449 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/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 -> eda42c9201fdedd9f50669e53ef2af5b1d7cb675 [2018-12-02 08:46:42,467 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 08:46:42,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 08:46:42,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 08:46:42,480 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 08:46:42,480 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 08:46:42,480 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector-loops/verisec_sendmail__tTflag_arr_one_loop_false-unreach-call_true-termination.i [2018-12-02 08:46:42,520 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/data/08f952158/1d6dfaea82384b09b3a3464449470f30/FLAG220747b4d [2018-12-02 08:46:42,962 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 08:46:42,963 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/sv-benchmarks/c/bitvector-loops/verisec_sendmail__tTflag_arr_one_loop_false-unreach-call_true-termination.i [2018-12-02 08:46:42,966 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/data/08f952158/1d6dfaea82384b09b3a3464449470f30/FLAG220747b4d [2018-12-02 08:46:42,975 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/data/08f952158/1d6dfaea82384b09b3a3464449470f30 [2018-12-02 08:46:42,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 08:46:42,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 08:46:42,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 08:46:42,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 08:46:42,980 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 08:46:42,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:46:42" (1/1) ... [2018-12-02 08:46:42,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7a2c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:42, skipping insertion in model container [2018-12-02 08:46:42,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:46:42" (1/1) ... [2018-12-02 08:46:42,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 08:46:42,996 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 08:46:43,082 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 08:46:43,084 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 08:46:43,096 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 08:46:43,106 INFO L195 MainTranslator]: Completed translation [2018-12-02 08:46:43,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43 WrapperNode [2018-12-02 08:46:43,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 08:46:43,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 08:46:43,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 08:46:43,107 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 08:46:43,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43" (1/1) ... [2018-12-02 08:46:43,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43" (1/1) ... [2018-12-02 08:46:43,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 08:46:43,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 08:46:43,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 08:46:43,120 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 08:46:43,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43" (1/1) ... [2018-12-02 08:46:43,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43" (1/1) ... [2018-12-02 08:46:43,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43" (1/1) ... [2018-12-02 08:46:43,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43" (1/1) ... [2018-12-02 08:46:43,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43" (1/1) ... [2018-12-02 08:46:43,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43" (1/1) ... [2018-12-02 08:46:43,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43" (1/1) ... [2018-12-02 08:46:43,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 08:46:43,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 08:46:43,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 08:46:43,162 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 08:46:43,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/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 [2018-12-02 08:46:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 08:46:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 08:46:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 08:46:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 08:46:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 08:46:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 08:46:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 08:46:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 08:46:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 08:46:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 08:46:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 08:46:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 08:46:43,290 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 08:46:43,290 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 08:46:43,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:46:43 BoogieIcfgContainer [2018-12-02 08:46:43,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 08:46:43,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 08:46:43,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 08:46:43,292 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 08:46:43,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:46:42" (1/3) ... [2018-12-02 08:46:43,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1649e9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:46:43, skipping insertion in model container [2018-12-02 08:46:43,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:43" (2/3) ... [2018-12-02 08:46:43,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1649e9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:46:43, skipping insertion in model container [2018-12-02 08:46:43,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:46:43" (3/3) ... [2018-12-02 08:46:43,294 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_sendmail__tTflag_arr_one_loop_false-unreach-call_true-termination.i [2018-12-02 08:46:43,300 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 08:46:43,304 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 08:46:43,312 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 08:46:43,329 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 08:46:43,329 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 08:46:43,329 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 08:46:43,329 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 08:46:43,330 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 08:46:43,330 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 08:46:43,330 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 08:46:43,330 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 08:46:43,330 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 08:46:43,339 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-12-02 08:46:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 08:46:43,342 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:43,343 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:43,344 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:43,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:43,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1522547275, now seen corresponding path program 1 times [2018-12-02 08:46:43,348 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:43,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:43,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:46:43,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:46:43,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:46:43,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 08:46:43,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 08:46:43,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 08:46:43,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 08:46:43,434 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-12-02 08:46:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:46:43,445 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2018-12-02 08:46:43,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 08:46:43,446 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-12-02 08:46:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:46:43,451 INFO L225 Difference]: With dead ends: 36 [2018-12-02 08:46:43,451 INFO L226 Difference]: Without dead ends: 15 [2018-12-02 08:46:43,453 INFO L631 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 [2018-12-02 08:46:43,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-02 08:46:43,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-02 08:46:43,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-02 08:46:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-12-02 08:46:43,473 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-12-02 08:46:43,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:46:43,473 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-12-02 08:46:43,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 08:46:43,473 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-12-02 08:46:43,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 08:46:43,474 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:43,474 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:43,474 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:43,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:43,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1742365231, now seen corresponding path program 1 times [2018-12-02 08:46:43,475 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:43,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:43,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:46:43,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:46:43,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:46:43,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 08:46:43,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 08:46:43,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 08:46:43,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:46:43,508 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2018-12-02 08:46:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:46:43,522 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2018-12-02 08:46:43,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 08:46:43,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-12-02 08:46:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:46:43,524 INFO L225 Difference]: With dead ends: 26 [2018-12-02 08:46:43,524 INFO L226 Difference]: Without dead ends: 19 [2018-12-02 08:46:43,524 INFO L631 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 [2018-12-02 08:46:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-12-02 08:46:43,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2018-12-02 08:46:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-02 08:46:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-12-02 08:46:43,527 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2018-12-02 08:46:43,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:46:43,527 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-12-02 08:46:43,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 08:46:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-12-02 08:46:43,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 08:46:43,528 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:43,528 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:43,528 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:43,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:43,529 INFO L82 PathProgramCache]: Analyzing trace with hash 351378381, now seen corresponding path program 1 times [2018-12-02 08:46:43,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:43,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:43,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:46:43,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:46:43,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:46:43,557 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:46:43,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:46:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:43,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:46:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:46:43,613 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:46:43,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-12-02 08:46:43,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:46:43,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:46:43,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 08:46:43,615 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2018-12-02 08:46:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:46:43,640 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-12-02 08:46:43,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 08:46:43,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-12-02 08:46:43,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:46:43,641 INFO L225 Difference]: With dead ends: 28 [2018-12-02 08:46:43,641 INFO L226 Difference]: Without dead ends: 21 [2018-12-02 08:46:43,641 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 08:46:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-02 08:46:43,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2018-12-02 08:46:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-02 08:46:43,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-12-02 08:46:43,643 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2018-12-02 08:46:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:46:43,643 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-12-02 08:46:43,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:46:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-12-02 08:46:43,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 08:46:43,644 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:43,644 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:43,644 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:43,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:43,644 INFO L82 PathProgramCache]: Analyzing trace with hash -652155413, now seen corresponding path program 2 times [2018-12-02 08:46:43,644 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:43,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:43,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:46:43,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:46:43,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:46:43,678 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:46:43,685 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 08:46:43,697 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-02 08:46:43,697 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 08:46:43,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:46:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 08:46:43,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-02 08:46:43,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2018-12-02 08:46:43,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 08:46:43,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 08:46:43,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-02 08:46:43,743 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2018-12-02 08:46:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:46:43,785 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2018-12-02 08:46:43,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 08:46:43,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-12-02 08:46:43,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:46:43,786 INFO L225 Difference]: With dead ends: 34 [2018-12-02 08:46:43,786 INFO L226 Difference]: Without dead ends: 23 [2018-12-02 08:46:43,786 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-12-02 08:46:43,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-02 08:46:43,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-12-02 08:46:43,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-02 08:46:43,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-02 08:46:43,788 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2018-12-02 08:46:43,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:46:43,788 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-02 08:46:43,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 08:46:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-02 08:46:43,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 08:46:43,789 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:43,789 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:43,789 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:43,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:43,789 INFO L82 PathProgramCache]: Analyzing trace with hash -2123854327, now seen corresponding path program 1 times [2018-12-02 08:46:43,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:43,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:43,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:46:43,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 08:46:43,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:46:43,827 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:46:43,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:46:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:43,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:46:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 08:46:43,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:46:43,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-12-02 08:46:43,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 08:46:43,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 08:46:43,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-02 08:46:43,874 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2018-12-02 08:46:43,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:46:43,894 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-12-02 08:46:43,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 08:46:43,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-12-02 08:46:43,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:46:43,895 INFO L225 Difference]: With dead ends: 34 [2018-12-02 08:46:43,895 INFO L226 Difference]: Without dead ends: 25 [2018-12-02 08:46:43,895 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-02 08:46:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-02 08:46:43,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-12-02 08:46:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 08:46:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-12-02 08:46:43,897 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21 [2018-12-02 08:46:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:46:43,898 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-12-02 08:46:43,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 08:46:43,898 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-12-02 08:46:43,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 08:46:43,898 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:43,898 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:43,898 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:43,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:43,898 INFO L82 PathProgramCache]: Analyzing trace with hash -428652121, now seen corresponding path program 2 times [2018-12-02 08:46:43,899 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:43,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:43,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:46:43,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 08:46:43,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:46:43,935 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:46:43,940 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 08:46:43,953 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 08:46:43,953 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 08:46:43,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:46:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 08:46:43,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:46:43,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-02 08:46:43,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 08:46:43,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 08:46:43,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-02 08:46:43,979 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2018-12-02 08:46:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:46:44,001 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-12-02 08:46:44,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 08:46:44,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-02 08:46:44,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:46:44,002 INFO L225 Difference]: With dead ends: 36 [2018-12-02 08:46:44,002 INFO L226 Difference]: Without dead ends: 27 [2018-12-02 08:46:44,003 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-02 08:46:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-02 08:46:44,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-12-02 08:46:44,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-02 08:46:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-12-02 08:46:44,007 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2018-12-02 08:46:44,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:46:44,007 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-12-02 08:46:44,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 08:46:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-12-02 08:46:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 08:46:44,008 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:44,008 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:44,008 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:44,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:44,008 INFO L82 PathProgramCache]: Analyzing trace with hash 868062661, now seen corresponding path program 3 times [2018-12-02 08:46:44,008 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:44,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:44,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:44,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:46:44,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 08:46:44,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:46:44,068 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:46:44,075 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 08:46:44,101 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-02 08:46:44,102 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 08:46:44,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:46:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-12-02 08:46:44,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:46:44,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2018-12-02 08:46:44,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 08:46:44,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 08:46:44,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-12-02 08:46:44,258 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 12 states. [2018-12-02 08:46:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:46:44,455 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-12-02 08:46:44,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 08:46:44,455 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-12-02 08:46:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:46:44,456 INFO L225 Difference]: With dead ends: 44 [2018-12-02 08:46:44,456 INFO L226 Difference]: Without dead ends: 32 [2018-12-02 08:46:44,456 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2018-12-02 08:46:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-02 08:46:44,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-12-02 08:46:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-02 08:46:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-12-02 08:46:44,460 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2018-12-02 08:46:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:46:44,460 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-12-02 08:46:44,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 08:46:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-12-02 08:46:44,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-02 08:46:44,460 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:44,460 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:44,461 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:44,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:44,461 INFO L82 PathProgramCache]: Analyzing trace with hash -208022531, now seen corresponding path program 4 times [2018-12-02 08:46:44,461 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:44,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:44,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:44,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:46:44,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 08:46:44,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:46:44,518 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:46:44,528 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 08:46:44,542 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 08:46:44,542 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 08:46:44,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:46:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 08:46:44,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:46:44,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-12-02 08:46:44,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 08:46:44,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 08:46:44,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-02 08:46:44,578 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 11 states. [2018-12-02 08:46:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:46:44,606 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-12-02 08:46:44,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 08:46:44,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2018-12-02 08:46:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:46:44,607 INFO L225 Difference]: With dead ends: 44 [2018-12-02 08:46:44,607 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 08:46:44,607 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-02 08:46:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 08:46:44,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-12-02 08:46:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-02 08:46:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-12-02 08:46:44,611 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-12-02 08:46:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:46:44,611 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-12-02 08:46:44,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 08:46:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-12-02 08:46:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 08:46:44,612 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:44,612 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:44,613 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:44,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash 80038431, now seen corresponding path program 5 times [2018-12-02 08:46:44,613 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:44,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:44,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:44,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:46:44,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 08:46:44,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:46:44,685 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:46:44,693 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 08:46:44,723 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-12-02 08:46:44,723 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 08:46:44,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:46:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 08:46:44,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:46:44,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-12-02 08:46:44,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 08:46:44,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 08:46:44,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-02 08:46:44,748 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 12 states. [2018-12-02 08:46:44,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:46:44,775 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2018-12-02 08:46:44,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 08:46:44,775 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-12-02 08:46:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:46:44,776 INFO L225 Difference]: With dead ends: 46 [2018-12-02 08:46:44,776 INFO L226 Difference]: Without dead ends: 36 [2018-12-02 08:46:44,776 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-02 08:46:44,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-02 08:46:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-12-02 08:46:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 08:46:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-12-02 08:46:44,781 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-12-02 08:46:44,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:46:44,781 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-12-02 08:46:44,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 08:46:44,781 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-12-02 08:46:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-02 08:46:44,781 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:44,782 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:44,782 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:44,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:44,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2028715969, now seen corresponding path program 6 times [2018-12-02 08:46:44,782 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:44,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:44,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:44,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:46:44,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 08:46:44,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:46:44,888 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:46:44,894 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 08:46:44,937 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-12-02 08:46:44,937 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 08:46:44,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:46:45,540 WARN L180 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2018-12-02 08:46:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-12-02 08:46:46,521 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:46:46,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2018-12-02 08:46:46,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-02 08:46:46,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-02 08:46:46,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2018-12-02 08:46:46,522 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 17 states. [2018-12-02 08:46:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:46:50,421 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2018-12-02 08:46:50,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-02 08:46:50,421 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 34 [2018-12-02 08:46:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:46:50,422 INFO L225 Difference]: With dead ends: 57 [2018-12-02 08:46:50,422 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 08:46:50,422 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=207, Invalid=443, Unknown=0, NotChecked=0, Total=650 [2018-12-02 08:46:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 08:46:50,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-12-02 08:46:50,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 08:46:50,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2018-12-02 08:46:50,427 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 34 [2018-12-02 08:46:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:46:50,427 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2018-12-02 08:46:50,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-02 08:46:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2018-12-02 08:46:50,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 08:46:50,428 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:50,428 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:50,428 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:50,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:50,429 INFO L82 PathProgramCache]: Analyzing trace with hash 775785179, now seen corresponding path program 7 times [2018-12-02 08:46:50,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:50,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:50,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:50,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:46:50,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-02 08:46:50,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:46:50,496 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:46:50,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:46:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:50,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:46:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-02 08:46:50,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 08:46:50,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-12-02 08:46:50,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-02 08:46:50,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-02 08:46:50,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-02 08:46:50,545 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 14 states. [2018-12-02 08:46:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:46:50,577 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-12-02 08:46:50,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-02 08:46:50,578 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2018-12-02 08:46:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:46:50,578 INFO L225 Difference]: With dead ends: 51 [2018-12-02 08:46:50,578 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 08:46:50,578 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-02 08:46:50,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 08:46:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-02 08:46:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 08:46:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2018-12-02 08:46:50,583 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 37 [2018-12-02 08:46:50,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:46:50,583 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2018-12-02 08:46:50,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-02 08:46:50,584 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2018-12-02 08:46:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-02 08:46:50,584 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:46:50,584 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:46:50,584 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:46:50,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:46:50,585 INFO L82 PathProgramCache]: Analyzing trace with hash 491342457, now seen corresponding path program 8 times [2018-12-02 08:46:50,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:46:50,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:46:50,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:50,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:46:50,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:46:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:46:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-12-02 08:46:50,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:46:50,733 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:46:50,738 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 08:47:02,759 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 08:47:02,759 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-12-02 08:47:02,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-02 08:47:02,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-12-02 08:47:02,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 08:47:02,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 08:47:02,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-12-02 08:47:02,792 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2018-12-02 08:47:02,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:47:02,838 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2018-12-02 08:47:02,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 08:47:02,838 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-12-02 08:47:02,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:47:02,838 INFO L225 Difference]: With dead ends: 46 [2018-12-02 08:47:02,838 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 08:47:02,839 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-02 08:47:02,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 08:47:02,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 08:47:02,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 08:47:02,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-12-02 08:47:02,843 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 39 [2018-12-02 08:47:02,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:47:02,843 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-12-02 08:47:02,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 08:47:02,844 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-12-02 08:47:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-02 08:47:02,844 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:47:02,844 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:47:02,844 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:47:02,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:47:02,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1912715259, now seen corresponding path program 9 times [2018-12-02 08:47:02,845 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:47:02,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:47:02,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:47:02,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:47:02,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:47:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:47:03,697 WARN L180 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 13 [2018-12-02 08:47:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-12-02 08:47:03,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:47:03,720 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:47:03,725 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 08:48:55,165 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-12-02 08:48:55,165 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-12-02 08:48:55,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-02 08:48:55,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-12-02 08:48:55,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 08:48:55,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 08:48:55,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-12-02 08:48:55,363 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 10 states. [2018-12-02 08:48:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:48:55,417 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2018-12-02 08:48:55,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 08:48:55,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-12-02 08:48:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:48:55,417 INFO L225 Difference]: With dead ends: 47 [2018-12-02 08:48:55,417 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 08:48:55,418 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-12-02 08:48:55,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 08:48:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-12-02 08:48:55,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-02 08:48:55,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2018-12-02 08:48:55,422 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 40 [2018-12-02 08:48:55,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:48:55,422 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2018-12-02 08:48:55,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 08:48:55,422 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2018-12-02 08:48:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-12-02 08:48:55,422 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:48:55,422 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:48:55,422 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:48:55,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:48:55,423 INFO L82 PathProgramCache]: Analyzing trace with hash 870906873, now seen corresponding path program 10 times [2018-12-02 08:48:55,423 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:48:55,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:48:55,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:48:55,423 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:48:55,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:48:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:48:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-12-02 08:48:55,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:48:55,498 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:48:55,504 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 08:49:07,527 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 08:49:07,528 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-12-02 08:49:07,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-02 08:49:07,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-12-02 08:49:07,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 08:49:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 08:49:07,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-02 08:49:07,594 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 11 states. [2018-12-02 08:49:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:49:07,654 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2018-12-02 08:49:07,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 08:49:07,654 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-12-02 08:49:07,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:49:07,655 INFO L225 Difference]: With dead ends: 48 [2018-12-02 08:49:07,655 INFO L226 Difference]: Without dead ends: 43 [2018-12-02 08:49:07,655 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-12-02 08:49:07,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-02 08:49:07,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-02 08:49:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 08:49:07,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-12-02 08:49:07,661 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 41 [2018-12-02 08:49:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:49:07,661 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-12-02 08:49:07,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 08:49:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-12-02 08:49:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-02 08:49:07,662 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:49:07,662 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:49:07,662 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:49:07,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:49:07,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1263847045, now seen corresponding path program 11 times [2018-12-02 08:49:07,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:49:07,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:49:07,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:49:07,663 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:49:07,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:49:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:49:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-12-02 08:49:07,798 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:49:07,798 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:49:07,806 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 08:49:19,996 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-12-02 08:49:19,996 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-12-02 08:49:20,098 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-02 08:49:20,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-12-02 08:49:20,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 08:49:20,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 08:49:20,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-12-02 08:49:20,099 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 12 states. [2018-12-02 08:49:20,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:49:20,143 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-12-02 08:49:20,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 08:49:20,144 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-12-02 08:49:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:49:20,144 INFO L225 Difference]: With dead ends: 49 [2018-12-02 08:49:20,144 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 08:49:20,145 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-12-02 08:49:20,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 08:49:20,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-02 08:49:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 08:49:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2018-12-02 08:49:20,149 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2018-12-02 08:49:20,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:49:20,149 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2018-12-02 08:49:20,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 08:49:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2018-12-02 08:49:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-12-02 08:49:20,150 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:49:20,150 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:49:20,150 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:49:20,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:49:20,150 INFO L82 PathProgramCache]: Analyzing trace with hash 560090489, now seen corresponding path program 12 times [2018-12-02 08:49:20,150 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:49:20,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:49:20,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:49:20,151 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:49:20,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:49:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:49:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-12-02 08:49:20,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:49:20,320 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:49:20,328 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 08:50:10,888 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2018-12-02 08:50:10,888 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-12-02 08:50:11,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-02 08:50:11,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-12-02 08:50:11,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-02 08:50:11,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-02 08:50:11,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-12-02 08:50:11,978 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 13 states. [2018-12-02 08:50:12,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:50:12,042 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2018-12-02 08:50:12,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-02 08:50:12,042 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2018-12-02 08:50:12,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:50:12,043 INFO L225 Difference]: With dead ends: 50 [2018-12-02 08:50:12,043 INFO L226 Difference]: Without dead ends: 45 [2018-12-02 08:50:12,043 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2018-12-02 08:50:12,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-02 08:50:12,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-02 08:50:12,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-02 08:50:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-12-02 08:50:12,050 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 43 [2018-12-02 08:50:12,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:50:12,050 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-12-02 08:50:12,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-02 08:50:12,050 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-12-02 08:50:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-12-02 08:50:12,051 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:50:12,051 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:50:12,051 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:50:12,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:50:12,051 INFO L82 PathProgramCache]: Analyzing trace with hash 218473733, now seen corresponding path program 13 times [2018-12-02 08:50:12,052 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:50:12,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:50:12,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:50:12,052 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 08:50:12,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:50:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:50:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-12-02 08:50:12,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 08:50:12,241 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 08:50:12,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:50:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-12-02 08:50:24,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-02 08:50:24,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-12-02 08:50:24,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-02 08:50:24,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-02 08:50:24,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-12-02 08:50:24,450 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 14 states. [2018-12-02 08:50:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:50:24,495 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-12-02 08:50:24,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-02 08:50:24,495 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2018-12-02 08:50:24,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:50:24,495 INFO L225 Difference]: With dead ends: 51 [2018-12-02 08:50:24,495 INFO L226 Difference]: Without dead ends: 46 [2018-12-02 08:50:24,496 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-12-02 08:50:24,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-02 08:50:24,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-12-02 08:50:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-02 08:50:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2018-12-02 08:50:24,499 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 44 [2018-12-02 08:50:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:50:24,500 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2018-12-02 08:50:24,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-02 08:50:24,500 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2018-12-02 08:50:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-02 08:50:24,500 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:50:24,500 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:50:24,500 INFO L423 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 08:50:24,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:50:24,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1781711111, now seen corresponding path program 14 times [2018-12-02 08:50:24,500 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:50:24,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:50:24,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:50:24,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:50:24,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:50:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 08:50:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 08:50:25,469 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 08:50:25,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:50:25 BoogieIcfgContainer [2018-12-02 08:50:25,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 08:50:25,490 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 08:50:25,490 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 08:50:25,490 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 08:50:25,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:46:43" (3/4) ... [2018-12-02 08:50:25,491 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 08:50:25,526 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6c398fcb-066e-4343-ad00-7ae2c28f9a6d/bin-2019/uautomizer/witness.graphml [2018-12-02 08:50:25,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 08:50:25,527 INFO L168 Benchmark]: Toolchain (without parser) took 222549.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 953.3 MB in the beginning and 851.8 MB in the end (delta: 101.5 MB). Peak memory consumption was 233.1 MB. Max. memory is 11.5 GB. [2018-12-02 08:50:25,527 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 08:50:25,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.48 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 941.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-02 08:50:25,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.71 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 08:50:25,528 INFO L168 Benchmark]: Boogie Preprocessor took 41.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-12-02 08:50:25,528 INFO L168 Benchmark]: RCFGBuilder took 128.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-12-02 08:50:25,528 INFO L168 Benchmark]: TraceAbstraction took 222199.07 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 22.5 MB). Free memory was 1.1 GB in the beginning and 857.5 MB in the end (delta: 235.0 MB). Peak memory consumption was 293.5 MB. Max. memory is 11.5 GB. [2018-12-02 08:50:25,528 INFO L168 Benchmark]: Witness Printer took 36.53 ms. Allocated memory is still 1.2 GB. Free memory was 857.5 MB in the beginning and 851.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 11.5 GB. [2018-12-02 08:50:25,529 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 128.48 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 941.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.71 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 128.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 222199.07 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 22.5 MB). Free memory was 1.1 GB in the beginning and 857.5 MB in the end (delta: 235.0 MB). Peak memory consumption was 293.5 MB. Max. memory is 11.5 GB. * Witness Printer took 36.53 ms. Allocated memory is still 1.2 GB. Free memory was 857.5 MB in the beginning and 851.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] char in[11]; [L15] char *s; [L16] unsigned char c; [L17] int i, j; [L18] int idx_in; [L19] i = 0 VAL [i=0, in={4294967286:0}] [L19] COND TRUE i < 11 [L20] in[i] = __VERIFIER_nondet_char() [L19] i++ VAL [i=1, in={4294967286:0}] [L19] COND TRUE i < 11 [L20] in[i] = __VERIFIER_nondet_char() [L19] i++ VAL [i=2, in={4294967286:0}] [L19] COND TRUE i < 11 [L20] in[i] = __VERIFIER_nondet_char() [L19] i++ VAL [i=3, in={4294967286:0}] [L19] COND TRUE i < 11 [L20] in[i] = __VERIFIER_nondet_char() [L19] i++ VAL [i=4, in={4294967286:0}] [L19] COND TRUE i < 11 [L20] in[i] = __VERIFIER_nondet_char() [L19] i++ VAL [i=5, in={4294967286:0}] [L19] COND TRUE i < 11 [L20] in[i] = __VERIFIER_nondet_char() [L19] i++ VAL [i=6, in={4294967286:0}] [L19] COND TRUE i < 11 [L20] in[i] = __VERIFIER_nondet_char() [L19] i++ VAL [i=7, in={4294967286:0}] [L19] COND TRUE i < 11 [L20] in[i] = __VERIFIER_nondet_char() [L19] i++ VAL [i=8, in={4294967286:0}] [L19] COND TRUE i < 11 [L20] in[i] = __VERIFIER_nondet_char() [L19] i++ VAL [i=9, in={4294967286:0}] [L19] COND TRUE i < 11 [L20] in[i] = __VERIFIER_nondet_char() [L19] i++ VAL [i=10, in={4294967286:0}] [L19] COND TRUE i < 11 [L20] in[i] = __VERIFIER_nondet_char() [L19] i++ VAL [i=11, in={4294967286:0}] [L19] COND FALSE !(i < 11) VAL [i=11, in={4294967286:0}] [L21] in[10] = 0 [L22] idx_in = 0 [L23] s = in [L24] i = 0 [L25] EXPR in[idx_in] [L25] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ [L31] EXPR in[idx_in] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ [L31] EXPR in[idx_in] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ [L31] EXPR in[idx_in] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ [L31] EXPR in[idx_in] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ [L31] EXPR in[idx_in] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ [L31] EXPR in[idx_in] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ [L31] EXPR in[idx_in] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ [L31] EXPR in[idx_in] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ [L31] EXPR in[idx_in] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ [L31] EXPR in[idx_in] [L31] c = in[idx_in] [L26] COND FALSE !(('0' <= c) && (c <= '9')) VAL [c=0, i=-12, idx_in=10, in={4294967286:0}, j=0, s={4294967286:0}] [L34] CALL __VERIFIER_assert (i >= 0) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNSAFE Result, 222.1s OverallTime, 18 OverallIterations, 11 TraceHistogramMax, 4.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 213 SDtfs, 139 SDslu, 992 SDs, 0 SdLazy, 561 SolverSat, 123 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 406 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 17 MinimizatonAttempts, 18 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 210.9s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1037 NumberOfCodeBlocks, 1015 NumberOfCodeBlocksAsserted, 83 NumberOfCheckSat, 717 ConstructedInterpolants, 7 QuantifiedInterpolants, 60070 SizeOfPredicates, 17 NumberOfNonLiveVariables, 940 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 26 InterpolantComputations, 3 PerfectInterpolantSequences, 901/1653 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...