./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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_bb198588-91a0-440d-b3e3-e97adb087dc3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 0.1.23-1dbac8b [2018-11-10 05:25:44,211 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:25:44,212 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:25:44,218 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:25:44,218 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:25:44,219 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:25:44,220 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:25:44,221 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:25:44,222 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:25:44,222 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:25:44,223 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:25:44,223 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:25:44,224 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:25:44,224 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:25:44,225 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:25:44,225 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:25:44,226 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:25:44,226 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:25:44,228 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:25:44,228 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:25:44,229 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:25:44,230 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:25:44,231 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:25:44,232 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:25:44,232 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:25:44,232 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:25:44,233 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:25:44,233 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:25:44,234 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:25:44,235 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:25:44,235 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:25:44,235 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:25:44,235 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:25:44,236 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:25:44,236 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:25:44,237 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:25:44,237 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 05:25:44,244 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:25:44,244 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:25:44,245 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:25:44,245 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 05:25:44,245 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:25:44,245 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:25:44,246 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 05:25:44,246 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:25:44,246 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:25:44,246 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:25:44,246 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:25:44,246 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:25:44,246 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:25:44,247 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:25:44,247 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:25:44,247 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:25:44,247 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:25:44,247 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:25:44,247 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:25:44,247 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:25:44,248 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:25:44,248 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:25:44,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:25:44,248 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:25:44,248 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:25:44,248 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:25:44,248 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 05:25:44,249 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:25:44,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:25:44,249 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_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:25:44,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:25:44,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:25:44,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:25:44,285 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:25:44,285 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:25:44,285 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector-loops/verisec_sendmail__tTflag_arr_one_loop_false-unreach-call_true-termination.i [2018-11-10 05:25:44,327 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/bin-2019/uautomizer/data/c57383ff7/24a0d9cc9bbd45a999d9c4ae8dea2390/FLAG12632aac8 [2018-11-10 05:25:44,723 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:25:44,724 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/sv-benchmarks/c/bitvector-loops/verisec_sendmail__tTflag_arr_one_loop_false-unreach-call_true-termination.i [2018-11-10 05:25:44,727 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/bin-2019/uautomizer/data/c57383ff7/24a0d9cc9bbd45a999d9c4ae8dea2390/FLAG12632aac8 [2018-11-10 05:25:44,738 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/bin-2019/uautomizer/data/c57383ff7/24a0d9cc9bbd45a999d9c4ae8dea2390 [2018-11-10 05:25:44,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:25:44,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 05:25:44,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:25:44,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:25:44,745 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:25:44,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:25:44" (1/1) ... [2018-11-10 05:25:44,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61258a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:25:44, skipping insertion in model container [2018-11-10 05:25:44,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:25:44" (1/1) ... [2018-11-10 05:25:44,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:25:44,772 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:25:44,875 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:25:44,878 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:25:44,889 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:25:44,899 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:25:44,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:25:44 WrapperNode [2018-11-10 05:25:44,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:25:44,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:25:44,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:25:44,900 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:25:44,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:25:44" (1/1) ... [2018-11-10 05:25:44,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:25:44" (1/1) ... [2018-11-10 05:25:44,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:25:44" (1/1) ... [2018-11-10 05:25:44,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:25:44" (1/1) ... [2018-11-10 05:25:44,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:25:44" (1/1) ... [2018-11-10 05:25:44,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:25:44" (1/1) ... [2018-11-10 05:25:44,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:25:44" (1/1) ... [2018-11-10 05:25:44,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:25:44,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:25:44,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:25:44,924 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:25:44,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:25:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:25:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:25:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:25:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 05:25:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:25:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 05:25:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2018-11-10 05:25:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 05:25:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:25:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 05:25:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 05:25:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 05:25:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 05:25:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:25:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:25:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 05:25:45,123 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:25:45,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:25:45 BoogieIcfgContainer [2018-11-10 05:25:45,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:25:45,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:25:45,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:25:45,127 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:25:45,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:25:44" (1/3) ... [2018-11-10 05:25:45,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30751594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:25:45, skipping insertion in model container [2018-11-10 05:25:45,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:25:44" (2/3) ... [2018-11-10 05:25:45,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30751594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:25:45, skipping insertion in model container [2018-11-10 05:25:45,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:25:45" (3/3) ... [2018-11-10 05:25:45,130 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_sendmail__tTflag_arr_one_loop_false-unreach-call_true-termination.i [2018-11-10 05:25:45,138 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:25:45,144 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:25:45,154 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:25:45,178 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:25:45,179 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:25:45,179 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:25:45,179 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:25:45,179 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:25:45,179 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:25:45,179 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:25:45,179 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:25:45,179 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:25:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-11-10 05:25:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 05:25:45,200 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:25:45,201 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:25:45,203 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:25:45,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:25:45,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1879298752, now seen corresponding path program 1 times [2018-11-10 05:25:45,208 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:25:45,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:25:45,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:25:45,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:25:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:25:45,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:25:45,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 05:25:45,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 05:25:45,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 05:25:45,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 05:25:45,296 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-11-10 05:25:45,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:25:45,314 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2018-11-10 05:25:45,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 05:25:45,315 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-10 05:25:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:25:45,319 INFO L225 Difference]: With dead ends: 56 [2018-11-10 05:25:45,319 INFO L226 Difference]: Without dead ends: 25 [2018-11-10 05:25:45,321 INFO L605 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 [2018-11-10 05:25:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-10 05:25:45,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-10 05:25:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-10 05:25:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-10 05:25:45,344 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 17 [2018-11-10 05:25:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:25:45,344 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-10 05:25:45,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 05:25:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-10 05:25:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 05:25:45,345 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:25:45,345 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:25:45,346 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:25:45,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:25:45,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1282794520, now seen corresponding path program 1 times [2018-11-10 05:25:45,346 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:25:45,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:25:45,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:25:45,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:25:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:25:45,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:25:45,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 05:25:45,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 05:25:45,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 05:25:45,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 05:25:45,385 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 3 states. [2018-11-10 05:25:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:25:45,429 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2018-11-10 05:25:45,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 05:25:45,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-10 05:25:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:25:45,431 INFO L225 Difference]: With dead ends: 46 [2018-11-10 05:25:45,431 INFO L226 Difference]: Without dead ends: 33 [2018-11-10 05:25:45,432 INFO L605 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 [2018-11-10 05:25:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-10 05:25:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2018-11-10 05:25:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-10 05:25:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-10 05:25:45,436 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2018-11-10 05:25:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:25:45,437 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-10 05:25:45,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 05:25:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-10 05:25:45,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 05:25:45,437 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:25:45,438 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:25:45,438 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:25:45,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:25:45,438 INFO L82 PathProgramCache]: Analyzing trace with hash 309692205, now seen corresponding path program 1 times [2018-11-10 05:25:45,438 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:25:45,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:25:45,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:25:45,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:25:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:25:45,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:25:45,482 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:25:45,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:25:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:25:45,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:25:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:25:45,552 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:25:45,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-10 05:25:45,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 05:25:45,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 05:25:45,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:25:45,553 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 5 states. [2018-11-10 05:25:45,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:25:45,584 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2018-11-10 05:25:45,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 05:25:45,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-10 05:25:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:25:45,585 INFO L225 Difference]: With dead ends: 51 [2018-11-10 05:25:45,585 INFO L226 Difference]: Without dead ends: 38 [2018-11-10 05:25:45,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:25:45,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-10 05:25:45,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2018-11-10 05:25:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-10 05:25:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-11-10 05:25:45,589 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 24 [2018-11-10 05:25:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:25:45,589 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-11-10 05:25:45,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 05:25:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-11-10 05:25:45,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 05:25:45,590 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:25:45,590 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:25:45,590 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:25:45,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:25:45,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2107214136, now seen corresponding path program 2 times [2018-11-10 05:25:45,590 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:25:45,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:25:45,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:25:45,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:25:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:25:45,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:25:45,654 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:25:45,664 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 05:25:45,679 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-10 05:25:45,679 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:25:45,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:25:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-10 05:25:45,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:25:45,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2018-11-10 05:25:45,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 05:25:45,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 05:25:45,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-10 05:25:45,748 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 8 states. [2018-11-10 05:25:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:25:45,812 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-11-10 05:25:45,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 05:25:45,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-11-10 05:25:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:25:45,813 INFO L225 Difference]: With dead ends: 63 [2018-11-10 05:25:45,814 INFO L226 Difference]: Without dead ends: 46 [2018-11-10 05:25:45,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-11-10 05:25:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-10 05:25:45,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-11-10 05:25:45,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-10 05:25:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-11-10 05:25:45,818 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 29 [2018-11-10 05:25:45,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:25:45,819 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-11-10 05:25:45,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 05:25:45,819 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-11-10 05:25:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-10 05:25:45,820 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:25:45,820 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:25:45,820 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:25:45,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:25:45,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1141620773, now seen corresponding path program 1 times [2018-11-10 05:25:45,820 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:25:45,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:25:45,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:25:45,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:25:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 05:25:45,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:25:45,880 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:25:45,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:25:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:25:45,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:25:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 05:25:45,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:25:45,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-10 05:25:45,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 05:25:45,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 05:25:45,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:25:45,951 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 7 states. [2018-11-10 05:25:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:25:45,978 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2018-11-10 05:25:45,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 05:25:45,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2018-11-10 05:25:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:25:45,979 INFO L225 Difference]: With dead ends: 70 [2018-11-10 05:25:45,979 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 05:25:45,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:25:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 05:25:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-11-10 05:25:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-10 05:25:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2018-11-10 05:25:45,983 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 42 [2018-11-10 05:25:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:25:45,983 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2018-11-10 05:25:45,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 05:25:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2018-11-10 05:25:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-10 05:25:45,983 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:25:45,984 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:25:45,984 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:25:45,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:25:45,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1361966374, now seen corresponding path program 2 times [2018-11-10 05:25:45,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:25:45,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:25:45,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:25:45,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:25:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 05:25:46,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:25:46,034 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:25:46,041 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 05:25:46,057 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 05:25:46,057 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:25:46,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:25:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 05:25:46,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:25:46,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-10 05:25:46,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 05:25:46,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 05:25:46,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-10 05:25:46,114 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 8 states. [2018-11-10 05:25:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:25:46,148 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-11-10 05:25:46,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 05:25:46,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2018-11-10 05:25:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:25:46,149 INFO L225 Difference]: With dead ends: 75 [2018-11-10 05:25:46,149 INFO L226 Difference]: Without dead ends: 56 [2018-11-10 05:25:46,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-10 05:25:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-10 05:25:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2018-11-10 05:25:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-10 05:25:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-11-10 05:25:46,155 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 47 [2018-11-10 05:25:46,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:25:46,155 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-11-10 05:25:46,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 05:25:46,155 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-11-10 05:25:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-10 05:25:46,156 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:25:46,157 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:25:46,157 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:25:46,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:25:46,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1958270651, now seen corresponding path program 3 times [2018-11-10 05:25:46,157 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:25:46,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:25:46,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:46,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:25:46,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:25:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:25:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 05:25:46,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:25:46,226 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:25:46,232 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 05:26:29,083 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-10 05:26:29,084 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:26:29,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:26:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 05:26:29,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:26:29,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-10 05:26:29,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 05:26:29,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 05:26:29,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:26:29,821 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 9 states. [2018-11-10 05:26:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:26:29,876 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-11-10 05:26:29,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 05:26:29,877 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-11-10 05:26:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:26:29,878 INFO L225 Difference]: With dead ends: 80 [2018-11-10 05:26:29,878 INFO L226 Difference]: Without dead ends: 61 [2018-11-10 05:26:29,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:26:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-10 05:26:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2018-11-10 05:26:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-10 05:26:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2018-11-10 05:26:29,884 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 52 [2018-11-10 05:26:29,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:26:29,884 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2018-11-10 05:26:29,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 05:26:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2018-11-10 05:26:29,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-10 05:26:29,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:26:29,886 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:26:29,886 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:26:29,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:26:29,886 INFO L82 PathProgramCache]: Analyzing trace with hash -401298874, now seen corresponding path program 4 times [2018-11-10 05:26:29,886 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:26:29,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:26:29,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:29,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:26:29,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:26:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 05:26:30,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:26:30,017 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:26:30,023 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 05:26:30,047 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 05:26:30,047 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:26:30,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:26:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 05:26:30,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:26:30,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-10 05:26:30,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 05:26:30,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 05:26:30,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-10 05:26:30,089 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 10 states. [2018-11-10 05:26:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:26:30,134 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2018-11-10 05:26:30,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 05:26:30,135 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-11-10 05:26:30,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:26:30,136 INFO L225 Difference]: With dead ends: 85 [2018-11-10 05:26:30,136 INFO L226 Difference]: Without dead ends: 66 [2018-11-10 05:26:30,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-10 05:26:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-10 05:26:30,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2018-11-10 05:26:30,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-10 05:26:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-11-10 05:26:30,142 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 57 [2018-11-10 05:26:30,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:26:30,142 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-11-10 05:26:30,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 05:26:30,142 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-11-10 05:26:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-10 05:26:30,143 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:26:30,143 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:26:30,143 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:26:30,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:26:30,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1364612507, now seen corresponding path program 5 times [2018-11-10 05:26:30,144 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:26:30,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:26:30,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:30,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:26:30,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:26:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 05:26:30,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:26:30,226 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:26:30,246 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 05:26:30,292 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-11-10 05:26:30,292 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:26:30,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:26:30,320 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 05:26:30,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:26:30,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-10 05:26:30,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 05:26:30,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 05:26:30,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-10 05:26:30,346 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 11 states. [2018-11-10 05:26:30,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:26:30,384 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2018-11-10 05:26:30,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 05:26:30,384 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2018-11-10 05:26:30,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:26:30,385 INFO L225 Difference]: With dead ends: 90 [2018-11-10 05:26:30,385 INFO L226 Difference]: Without dead ends: 71 [2018-11-10 05:26:30,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-10 05:26:30,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-10 05:26:30,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2018-11-10 05:26:30,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-10 05:26:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2018-11-10 05:26:30,390 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 62 [2018-11-10 05:26:30,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:26:30,391 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2018-11-10 05:26:30,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 05:26:30,392 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2018-11-10 05:26:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-10 05:26:30,393 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:26:30,393 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:26:30,393 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:26:30,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:26:30,394 INFO L82 PathProgramCache]: Analyzing trace with hash -428640410, now seen corresponding path program 6 times [2018-11-10 05:26:30,394 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:26:30,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:26:30,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:30,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:26:30,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:26:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 05:26:30,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:26:30,468 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:26:30,480 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 05:26:30,631 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-11-10 05:26:30,631 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:26:30,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:26:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 4 refuted. 4 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-10 05:26:34,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:26:34,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2018-11-10 05:26:34,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 05:26:34,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 05:26:34,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=143, Unknown=1, NotChecked=0, Total=210 [2018-11-10 05:26:34,498 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 15 states. [2018-11-10 05:26:43,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:26:43,209 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2018-11-10 05:26:43,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 05:26:43,209 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2018-11-10 05:26:43,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:26:43,209 INFO L225 Difference]: With dead ends: 107 [2018-11-10 05:26:43,209 INFO L226 Difference]: Without dead ends: 85 [2018-11-10 05:26:43,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=174, Invalid=377, Unknown=1, NotChecked=0, Total=552 [2018-11-10 05:26:43,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-11-10 05:26:43,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2018-11-10 05:26:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-10 05:26:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2018-11-10 05:26:43,217 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 67 [2018-11-10 05:26:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:26:43,217 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2018-11-10 05:26:43,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 05:26:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2018-11-10 05:26:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-10 05:26:43,218 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:26:43,218 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:26:43,218 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:26:43,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:26:43,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2102420141, now seen corresponding path program 7 times [2018-11-10 05:26:43,218 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:26:43,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:26:43,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:43,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:26:43,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:26:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 05:26:43,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:26:43,311 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:26:43,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:26:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:26:43,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:26:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 05:26:43,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:26:43,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-11-10 05:26:43,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 05:26:43,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 05:26:43,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-10 05:26:43,376 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 14 states. [2018-11-10 05:26:43,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:26:43,448 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2018-11-10 05:26:43,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 05:26:43,449 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2018-11-10 05:26:43,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:26:43,449 INFO L225 Difference]: With dead ends: 110 [2018-11-10 05:26:43,449 INFO L226 Difference]: Without dead ends: 87 [2018-11-10 05:26:43,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-10 05:26:43,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-11-10 05:26:43,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-11-10 05:26:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-10 05:26:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-11-10 05:26:43,457 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 81 [2018-11-10 05:26:43,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:26:43,457 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-11-10 05:26:43,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 05:26:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-11-10 05:26:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-10 05:26:43,459 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:26:43,459 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:26:43,459 INFO L424 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:26:43,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:26:43,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1693802750, now seen corresponding path program 8 times [2018-11-10 05:26:43,459 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:26:43,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:26:43,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:43,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:26:43,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:26:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-11-10 05:26:43,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:26:43,568 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:26:43,584 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 05:26:55,802 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 05:26:55,803 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-11-10 05:26:56,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:26:56,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-11-10 05:26:56,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 05:26:56,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 05:26:56,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-10 05:26:56,076 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 8 states. [2018-11-10 05:26:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:26:56,115 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2018-11-10 05:26:56,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 05:26:56,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2018-11-10 05:26:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:26:56,116 INFO L225 Difference]: With dead ends: 96 [2018-11-10 05:26:56,116 INFO L226 Difference]: Without dead ends: 91 [2018-11-10 05:26:56,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:26:56,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-11-10 05:26:56,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-11-10 05:26:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-11-10 05:26:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-11-10 05:26:56,123 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 86 [2018-11-10 05:26:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:26:56,123 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-11-10 05:26:56,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 05:26:56,123 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-11-10 05:26:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-10 05:26:56,124 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:26:56,125 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:26:56,125 INFO L424 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:26:56,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:26:56,125 INFO L82 PathProgramCache]: Analyzing trace with hash -885979351, now seen corresponding path program 9 times [2018-11-10 05:26:56,125 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:26:56,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:26:56,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:56,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:26:56,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:26:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:26:58,242 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2018-11-10 05:26:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-11-10 05:26:58,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:26:58,264 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:26:58,271 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 05:28:47,820 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-11-10 05:28:47,820 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-11-10 05:28:56,022 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:28:56,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-10 05:28:56,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 05:28:56,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 05:28:56,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:28:56,023 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 9 states. [2018-11-10 05:28:56,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:28:56,097 INFO L93 Difference]: Finished difference Result 100 states and 101 transitions. [2018-11-10 05:28:56,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 05:28:56,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2018-11-10 05:28:56,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:28:56,099 INFO L225 Difference]: With dead ends: 100 [2018-11-10 05:28:56,099 INFO L226 Difference]: Without dead ends: 95 [2018-11-10 05:28:56,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-11-10 05:28:56,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-11-10 05:28:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-11-10 05:28:56,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-11-10 05:28:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-11-10 05:28:56,107 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 90 [2018-11-10 05:28:56,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:28:56,108 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-11-10 05:28:56,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 05:28:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-11-10 05:28:56,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-10 05:28:56,109 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:28:56,109 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:28:56,109 INFO L424 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:28:56,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:28:56,110 INFO L82 PathProgramCache]: Analyzing trace with hash 873006032, now seen corresponding path program 10 times [2018-11-10 05:28:56,110 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:28:56,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:28:56,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:28:56,111 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:28:56,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:28:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:28:59,166 WARN L179 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 13 [2018-11-10 05:29:07,899 WARN L179 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 13 [2018-11-10 05:29:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 42 refuted. 8 times theorem prover too weak. 297 trivial. 0 not checked. [2018-11-10 05:29:07,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:29:07,929 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:29:07,934 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 05:29:20,247 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 05:29:20,247 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-11-10 05:29:21,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:29:21,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-11-10 05:29:21,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 05:29:21,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 05:29:21,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=62, Unknown=5, NotChecked=0, Total=90 [2018-11-10 05:29:21,007 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 10 states. [2018-11-10 05:29:23,184 WARN L179 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 28 DAG size of output: 17 [2018-11-10 05:29:25,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:29:25,277 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2018-11-10 05:29:25,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 05:29:25,277 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2018-11-10 05:29:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:29:25,278 INFO L225 Difference]: With dead ends: 104 [2018-11-10 05:29:25,278 INFO L226 Difference]: Without dead ends: 99 [2018-11-10 05:29:25,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=51, Invalid=126, Unknown=5, NotChecked=0, Total=182 [2018-11-10 05:29:25,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-10 05:29:25,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-11-10 05:29:25,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-11-10 05:29:25,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-11-10 05:29:25,283 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 94 [2018-11-10 05:29:25,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:29:25,285 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-11-10 05:29:25,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 05:29:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-11-10 05:29:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-10 05:29:25,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:29:25,285 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:29:25,285 INFO L424 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:29:25,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:29:25,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1102337271, now seen corresponding path program 11 times [2018-11-10 05:29:25,286 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:29:25,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:29:25,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:29:25,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:29:25,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:29:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:29:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-11-10 05:29:25,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:29:25,504 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:29:25,517 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 05:29:37,681 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-10 05:29:37,682 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-11-10 05:29:37,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:29:37,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-11-10 05:29:37,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 05:29:37,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 05:29:37,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-10 05:29:37,738 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 11 states. [2018-11-10 05:29:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:29:39,960 INFO L93 Difference]: Finished difference Result 108 states and 109 transitions. [2018-11-10 05:29:39,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 05:29:39,960 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2018-11-10 05:29:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:29:39,961 INFO L225 Difference]: With dead ends: 108 [2018-11-10 05:29:39,961 INFO L226 Difference]: Without dead ends: 103 [2018-11-10 05:29:39,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-11-10 05:29:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-10 05:29:39,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-11-10 05:29:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-11-10 05:29:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-11-10 05:29:39,966 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 98 [2018-11-10 05:29:39,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:29:39,966 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-11-10 05:29:39,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 05:29:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-11-10 05:29:39,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-10 05:29:39,967 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:29:39,967 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:29:39,967 INFO L424 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:29:39,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:29:39,967 INFO L82 PathProgramCache]: Analyzing trace with hash -109790562, now seen corresponding path program 12 times [2018-11-10 05:29:39,967 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:29:39,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:29:39,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:29:39,968 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:29:39,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:29:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:29:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-11-10 05:29:40,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:29:40,138 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:29:40,150 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 05:30:32,651 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2018-11-10 05:30:32,651 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-11-10 05:30:34,327 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:30:34,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-11-10 05:30:34,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 05:30:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 05:30:34,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-11-10 05:30:34,328 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 12 states. [2018-11-10 05:30:34,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:30:34,397 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2018-11-10 05:30:34,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 05:30:34,397 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2018-11-10 05:30:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:30:34,398 INFO L225 Difference]: With dead ends: 112 [2018-11-10 05:30:34,398 INFO L226 Difference]: Without dead ends: 107 [2018-11-10 05:30:34,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-11-10 05:30:34,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-11-10 05:30:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-11-10 05:30:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-11-10 05:30:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-11-10 05:30:34,403 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 102 [2018-11-10 05:30:34,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:30:34,404 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-11-10 05:30:34,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 05:30:34,404 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-11-10 05:30:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-10 05:30:34,405 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:30:34,405 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:30:34,405 INFO L424 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:30:34,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:30:34,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1772876997, now seen corresponding path program 13 times [2018-11-10 05:30:34,406 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:30:34,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:30:34,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:30:34,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:30:34,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:30:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:30:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 124 refuted. 4 times theorem prover too weak. 297 trivial. 0 not checked. [2018-11-10 05:30:38,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:30:38,923 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/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 [2018-11-10 05:30:38,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:30:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-11-10 05:30:51,151 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:30:51,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-11-10 05:30:51,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 05:30:51,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 05:30:51,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=104, Unknown=2, NotChecked=0, Total=156 [2018-11-10 05:30:51,152 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 13 states. [2018-11-10 05:30:55,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:30:55,448 INFO L93 Difference]: Finished difference Result 116 states and 117 transitions. [2018-11-10 05:30:55,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 05:30:55,449 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2018-11-10 05:30:55,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:30:55,449 INFO L225 Difference]: With dead ends: 116 [2018-11-10 05:30:55,449 INFO L226 Difference]: Without dead ends: 111 [2018-11-10 05:30:55,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=76, Invalid=162, Unknown=2, NotChecked=0, Total=240 [2018-11-10 05:30:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-10 05:30:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-11-10 05:30:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-11-10 05:30:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-11-10 05:30:55,455 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 106 [2018-11-10 05:30:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:30:55,455 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-11-10 05:30:55,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 05:30:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-11-10 05:30:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-10 05:30:55,456 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:30:55,456 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:30:55,456 INFO L424 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:30:55,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:30:55,456 INFO L82 PathProgramCache]: Analyzing trace with hash 433832812, now seen corresponding path program 14 times [2018-11-10 05:30:55,456 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:30:55,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:30:55,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:30:55,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:30:55,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:30:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:31:07,596 WARN L179 SmtUtils]: Spent 11.89 s on a formula simplification. DAG size of input: 48 DAG size of output: 25 [2018-11-10 05:31:09,754 WARN L179 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 41 DAG size of output: 11 [2018-11-10 05:31:18,065 WARN L179 SmtUtils]: Spent 4.26 s on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-11-10 05:31:34,488 WARN L179 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 28 DAG size of output: 13 [2018-11-10 05:31:48,438 WARN L179 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 42 DAG size of output: 14 [2018-11-10 05:32:03,059 WARN L179 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 63 DAG size of output: 14 [2018-11-10 05:32:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 138 refuted. 24 times theorem prover too weak. 297 trivial. 0 not checked. [2018-11-10 05:32:03,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:32:03,089 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 05:32:03,096 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 05:32:15,129 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 05:32:15,129 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-11-10 05:32:15,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 05:32:15,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-11-10 05:32:15,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 05:32:15,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 05:32:15,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=116, Unknown=14, NotChecked=0, Total=182 [2018-11-10 05:32:15,181 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 14 states. [2018-11-10 05:32:15,692 WARN L179 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2018-11-10 05:32:32,609 WARN L179 SmtUtils]: Spent 12.67 s on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2018-11-10 05:32:45,431 WARN L179 SmtUtils]: Spent 2.62 s on a formula simplification that was a NOOP. DAG size: 50 [2018-11-10 05:33:07,451 WARN L179 SmtUtils]: Spent 7.31 s on a formula simplification that was a NOOP. DAG size: 39 [2018-11-10 05:33:36,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:33:36,272 INFO L93 Difference]: Finished difference Result 120 states and 121 transitions. [2018-11-10 05:33:36,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 05:33:36,272 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 110 [2018-11-10 05:33:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:33:36,273 INFO L225 Difference]: With dead ends: 120 [2018-11-10 05:33:36,273 INFO L226 Difference]: Without dead ends: 115 [2018-11-10 05:33:36,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 119.4s TimeCoverageRelationStatistics Valid=127, Invalid=270, Unknown=23, NotChecked=0, Total=420 [2018-11-10 05:33:36,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-11-10 05:33:36,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-11-10 05:33:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-11-10 05:33:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-11-10 05:33:36,279 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 110 [2018-11-10 05:33:36,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:33:36,280 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-11-10 05:33:36,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 05:33:36,280 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-11-10 05:33:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-10 05:33:36,281 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:33:36,281 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:33:36,281 INFO L424 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:33:36,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:33:36,281 INFO L82 PathProgramCache]: Analyzing trace with hash 2057692819, now seen corresponding path program 15 times [2018-11-10 05:33:36,281 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:33:36,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:33:36,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:33:36,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:33:36,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:33:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:33:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:33:36,973 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 05:33:37,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:33:37 BoogieIcfgContainer [2018-11-10 05:33:37,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:33:37,013 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:33:37,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:33:37,013 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:33:37,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:25:45" (3/4) ... [2018-11-10 05:33:37,017 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 05:33:37,076 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bb198588-91a0-440d-b3e3-e97adb087dc3/bin-2019/uautomizer/witness.graphml [2018-11-10 05:33:37,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:33:37,076 INFO L168 Benchmark]: Toolchain (without parser) took 472335.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 960.3 MB in the beginning and 876.9 MB in the end (delta: 83.5 MB). Peak memory consumption was 236.0 MB. Max. memory is 11.5 GB. [2018-11-10 05:33:37,077 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:33:37,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.51 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:33:37,078 INFO L168 Benchmark]: Boogie Preprocessor took 24.09 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:33:37,078 INFO L168 Benchmark]: RCFGBuilder took 200.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -169.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-10 05:33:37,078 INFO L168 Benchmark]: TraceAbstraction took 471887.42 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 19.4 MB). Free memory was 1.1 GB in the beginning and 882.3 MB in the end (delta: 234.1 MB). Peak memory consumption was 253.5 MB. Max. memory is 11.5 GB. [2018-11-10 05:33:37,078 INFO L168 Benchmark]: Witness Printer took 63.23 ms. Allocated memory is still 1.2 GB. Free memory was 882.3 MB in the beginning and 876.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 05:33:37,083 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.51 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.09 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 200.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -169.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 471887.42 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 19.4 MB). Free memory was 1.1 GB in the beginning and 882.3 MB in the end (delta: 234.1 MB). Peak memory consumption was 253.5 MB. Max. memory is 11.5 GB. * Witness Printer took 63.23 ms. Allocated memory is still 1.2 GB. Free memory was 882.3 MB in the beginning and 876.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 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] FCALL char in[11]; VAL [in={2147483650:0}] [L15] char *s; [L16] unsigned char c; [L17] int i, j; [L18] int idx_in; [L19] i = 0 VAL [i=0, in={2147483650:0}] [L19] COND TRUE i < 11 [L20] FCALL in[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=50, i=0, in={2147483650:0}] [L19] i++ VAL [i=1, in={2147483650:0}] [L19] COND TRUE i < 11 [L20] FCALL in[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=49, i=1, in={2147483650:0}] [L19] i++ VAL [i=2, in={2147483650:0}] [L19] COND TRUE i < 11 [L20] FCALL in[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=52, i=2, in={2147483650:0}] [L19] i++ VAL [i=3, in={2147483650:0}] [L19] COND TRUE i < 11 [L20] FCALL in[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=55, i=3, in={2147483650:0}] [L19] i++ VAL [i=4, in={2147483650:0}] [L19] COND TRUE i < 11 [L20] FCALL in[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=52, i=4, in={2147483650:0}] [L19] i++ VAL [i=5, in={2147483650:0}] [L19] COND TRUE i < 11 [L20] FCALL in[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=56, i=5, in={2147483650:0}] [L19] i++ VAL [i=6, in={2147483650:0}] [L19] COND TRUE i < 11 [L20] FCALL in[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=51, i=6, in={2147483650:0}] [L19] i++ VAL [i=7, in={2147483650:0}] [L19] COND TRUE i < 11 [L20] FCALL in[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=54, i=7, in={2147483650:0}] [L19] i++ VAL [i=8, in={2147483650:0}] [L19] COND TRUE i < 11 [L20] FCALL in[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=52, i=8, in={2147483650:0}] [L19] i++ VAL [i=9, in={2147483650:0}] [L19] COND TRUE i < 11 [L20] FCALL in[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=57, i=9, in={2147483650:0}] [L19] i++ VAL [i=10, in={2147483650:0}] [L19] COND TRUE i < 11 [L20] FCALL in[i] = __VERIFIER_nondet_char() VAL [__VERIFIER_nondet_char()=0, i=10, in={2147483650:0}] [L19] i++ VAL [i=11, in={2147483650:0}] [L19] COND FALSE !(i < 11) VAL [i=11, in={2147483650:0}] [L21] FCALL in[10] = 0 VAL [i=11, in={2147483650:0}] [L22] idx_in = 0 [L23] s = in [L24] i = 0 VAL [i=0, idx_in=0, in={2147483650:0}, s={2147483650:0}] [L25] EXPR, FCALL in[idx_in] VAL [i=0, idx_in=0, in={2147483650:0}, in[idx_in]=50, s={2147483650:0}] [L25] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ VAL [c=50, i=2, idx_in=1, in={2147483650:0}, j=2, s={2147483650:0}] [L31] EXPR, FCALL in[idx_in] VAL [c=50, i=2, idx_in=1, in={2147483650:0}, in[idx_in]=49, j=2, s={2147483650:0}] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ VAL [c=49, i=21, idx_in=2, in={2147483650:0}, j=1, s={2147483650:0}] [L31] EXPR, FCALL in[idx_in] VAL [c=49, i=21, idx_in=2, in={2147483650:0}, in[idx_in]=52, j=1, s={2147483650:0}] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ VAL [c=52, i=214, idx_in=3, in={2147483650:0}, j=4, s={2147483650:0}] [L31] EXPR, FCALL in[idx_in] VAL [c=52, i=214, idx_in=3, in={2147483650:0}, in[idx_in]=55, j=4, s={2147483650:0}] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ VAL [c=55, i=2147, idx_in=4, in={2147483650:0}, j=7, s={2147483650:0}] [L31] EXPR, FCALL in[idx_in] VAL [c=55, i=2147, idx_in=4, in={2147483650:0}, in[idx_in]=52, j=7, s={2147483650:0}] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ VAL [c=52, i=21474, idx_in=5, in={2147483650:0}, j=4, s={2147483650:0}] [L31] EXPR, FCALL in[idx_in] VAL [c=52, i=21474, idx_in=5, in={2147483650:0}, in[idx_in]=56, j=4, s={2147483650:0}] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ VAL [c=56, i=214748, idx_in=6, in={2147483650:0}, j=8, s={2147483650:0}] [L31] EXPR, FCALL in[idx_in] VAL [c=56, i=214748, idx_in=6, in={2147483650:0}, in[idx_in]=51, j=8, s={2147483650:0}] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ VAL [c=51, i=2147483, idx_in=7, in={2147483650:0}, j=3, s={2147483650:0}] [L31] EXPR, FCALL in[idx_in] VAL [c=51, i=2147483, idx_in=7, in={2147483650:0}, in[idx_in]=54, j=3, s={2147483650:0}] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ VAL [c=54, i=21474836, idx_in=8, in={2147483650:0}, j=6, s={2147483650:0}] [L31] EXPR, FCALL in[idx_in] VAL [c=54, i=21474836, idx_in=8, in={2147483650:0}, in[idx_in]=52, j=6, s={2147483650:0}] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ VAL [c=52, i=214748364, idx_in=9, in={2147483650:0}, j=4, s={2147483650:0}] [L31] EXPR, FCALL in[idx_in] VAL [c=52, i=214748364, idx_in=9, in={2147483650:0}, in[idx_in]=57, j=4, s={2147483650:0}] [L31] c = in[idx_in] [L26] COND TRUE ('0' <= c) && (c <= '9') [L28] j = c - '0' [L29] i = i * 10U + j [L30] idx_in++ VAL [c=57, i=-2147483647, idx_in=10, in={2147483650:0}, j=9, s={2147483650:0}] [L31] EXPR, FCALL in[idx_in] VAL [c=57, i=-2147483647, idx_in=10, in={2147483650:0}, in[idx_in]=0, j=9, s={2147483650:0}] [L31] c = in[idx_in] [L26] COND FALSE !(('0' <= c) && (c <= '9')) VAL [c=0, i=-2147483647, idx_in=10, in={2147483650:0}, j=9, s={2147483650:0}] [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, 34 locations, 1 error locations. UNSAFE Result, 471.8s OverallTime, 19 OverallIterations, 12 TraceHistogramMax, 101.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 391 SDtfs, 536 SDslu, 1853 SDs, 0 SdLazy, 685 SolverSat, 124 SolverUnsat, 21 SolverUnknown, 0 SolverNotchecked, 45.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 645 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 144.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=18, 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, 18 MinimizatonAttempts, 33 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 266.6s SatisfiabilityAnalysisTime, 91.6s InterpolantComputationTime, 2444 NumberOfCodeBlocks, 2414 NumberOfCodeBlocksAsserted, 89 NumberOfCheckSat, 1617 ConstructedInterpolants, 9 QuantifiedInterpolants, 365193 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1073 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 2368/4245 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...