./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/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 751def0588f132c393a8666a5acb62e8205c40a1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 10:43:45,509 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:43:45,510 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:43:45,520 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:43:45,520 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:43:45,522 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:43:45,523 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:43:45,524 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:43:45,527 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:43:45,528 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:43:45,529 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:43:45,529 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:43:45,531 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:43:45,532 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:43:45,537 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:43:45,538 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:43:45,539 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:43:45,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:43:45,545 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:43:45,547 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:43:45,547 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:43:45,548 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:43:45,550 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:43:45,550 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:43:45,550 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:43:45,551 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:43:45,552 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:43:45,552 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:43:45,553 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:43:45,554 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:43:45,554 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:43:45,554 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:43:45,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:43:45,554 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:43:45,555 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:43:45,556 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:43:45,556 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 10:43:45,568 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:43:45,569 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:43:45,569 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:43:45,569 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 10:43:45,570 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:43:45,570 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:43:45,570 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:43:45,570 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:43:45,571 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:43:45,571 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:43:45,571 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:43:45,571 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:43:45,571 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:43:45,571 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:43:45,571 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:43:45,572 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:43:45,572 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:43:45,572 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:43:45,572 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:43:45,572 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:43:45,572 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:43:45,573 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:43:45,573 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:43:45,573 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:43:45,573 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:43:45,573 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:43:45,573 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:43:45,573 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:43:45,574 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:43:45,574 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:43:45,574 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_0c581fed-9124-4861-adf6-c0dbf64703fe/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 -> 751def0588f132c393a8666a5acb62e8205c40a1 [2018-11-18 10:43:45,605 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:43:45,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:43:45,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:43:45,627 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:43:45,627 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:43:45,628 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/bin-2019/uautomizer/../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i [2018-11-18 10:43:45,681 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/bin-2019/uautomizer/data/7a2727475/beca0a83d06b4e07a44624ae90ce1176/FLAG0398bbe7f [2018-11-18 10:43:46,046 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:43:46,046 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/sv-benchmarks/c/loop-invgen/SpamAssassin-loop_true-unreach-call_false-termination.i [2018-11-18 10:43:46,051 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/bin-2019/uautomizer/data/7a2727475/beca0a83d06b4e07a44624ae90ce1176/FLAG0398bbe7f [2018-11-18 10:43:46,061 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/bin-2019/uautomizer/data/7a2727475/beca0a83d06b4e07a44624ae90ce1176 [2018-11-18 10:43:46,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:43:46,067 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:43:46,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:43:46,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:43:46,071 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:43:46,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:43:46" (1/1) ... [2018-11-18 10:43:46,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c4f020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:46, skipping insertion in model container [2018-11-18 10:43:46,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:43:46" (1/1) ... [2018-11-18 10:43:46,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:43:46,098 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:43:46,232 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:43:46,235 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:43:46,249 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:43:46,260 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:43:46,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:46 WrapperNode [2018-11-18 10:43:46,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:43:46,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:43:46,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:43:46,261 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:43:46,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:46" (1/1) ... [2018-11-18 10:43:46,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:46" (1/1) ... [2018-11-18 10:43:46,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:46" (1/1) ... [2018-11-18 10:43:46,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:46" (1/1) ... [2018-11-18 10:43:46,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:46" (1/1) ... [2018-11-18 10:43:46,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:46" (1/1) ... [2018-11-18 10:43:46,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:46" (1/1) ... [2018-11-18 10:43:46,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:43:46,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:43:46,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:43:46,287 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:43:46,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/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 [2018-11-18 10:43:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:43:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:43:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 10:43:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:43:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:43:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 10:43:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 10:43:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 10:43:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:43:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:43:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:43:46,664 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:43:46,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:43:46 BoogieIcfgContainer [2018-11-18 10:43:46,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:43:46,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:43:46,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:43:46,668 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:43:46,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:43:46" (1/3) ... [2018-11-18 10:43:46,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0ff4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:43:46, skipping insertion in model container [2018-11-18 10:43:46,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:43:46" (2/3) ... [2018-11-18 10:43:46,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0ff4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:43:46, skipping insertion in model container [2018-11-18 10:43:46,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:43:46" (3/3) ... [2018-11-18 10:43:46,671 INFO L112 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop_true-unreach-call_false-termination.i [2018-11-18 10:43:46,679 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:43:46,685 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:43:46,695 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:43:46,718 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:43:46,719 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:43:46,719 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:43:46,719 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:43:46,719 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:43:46,719 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:43:46,720 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:43:46,720 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:43:46,720 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:43:46,738 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-18 10:43:46,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 10:43:46,743 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:43:46,744 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:43:46,746 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:43:46,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:43:46,751 INFO L82 PathProgramCache]: Analyzing trace with hash -372910930, now seen corresponding path program 1 times [2018-11-18 10:43:46,753 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:43:46,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:43:46,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:46,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:46,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:43:46,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:43:46,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 10:43:46,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 10:43:46,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 10:43:46,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 10:43:46,940 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2018-11-18 10:43:47,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:43:47,169 INFO L93 Difference]: Finished difference Result 90 states and 153 transitions. [2018-11-18 10:43:47,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 10:43:47,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-18 10:43:47,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:43:47,177 INFO L225 Difference]: With dead ends: 90 [2018-11-18 10:43:47,177 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 10:43:47,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 10:43:47,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 10:43:47,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-11-18 10:43:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 10:43:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 60 transitions. [2018-11-18 10:43:47,216 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 60 transitions. Word has length 15 [2018-11-18 10:43:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:43:47,217 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 60 transitions. [2018-11-18 10:43:47,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 10:43:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 60 transitions. [2018-11-18 10:43:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 10:43:47,218 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:43:47,218 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:43:47,222 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:43:47,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:43:47,222 INFO L82 PathProgramCache]: Analyzing trace with hash -394866897, now seen corresponding path program 1 times [2018-11-18 10:43:47,222 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:43:47,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:43:47,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:47,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:47,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:43:47,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:43:47,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 10:43:47,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 10:43:47,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 10:43:47,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 10:43:47,329 INFO L87 Difference]: Start difference. First operand 43 states and 60 transitions. Second operand 5 states. [2018-11-18 10:43:47,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:43:47,432 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2018-11-18 10:43:47,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 10:43:47,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-18 10:43:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:43:47,435 INFO L225 Difference]: With dead ends: 58 [2018-11-18 10:43:47,435 INFO L226 Difference]: Without dead ends: 56 [2018-11-18 10:43:47,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 10:43:47,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-18 10:43:47,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2018-11-18 10:43:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-18 10:43:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2018-11-18 10:43:47,447 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 15 [2018-11-18 10:43:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:43:47,447 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2018-11-18 10:43:47,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 10:43:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2018-11-18 10:43:47,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 10:43:47,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:43:47,448 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:43:47,448 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:43:47,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:43:47,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1825950327, now seen corresponding path program 1 times [2018-11-18 10:43:47,448 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:43:47,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:43:47,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:47,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:47,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:43:47,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:43:47,535 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/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 [2018-11-18 10:43:47,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:47,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:43:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:43:47,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:43:47,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2018-11-18 10:43:47,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 10:43:47,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 10:43:47,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-18 10:43:47,631 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand 9 states. [2018-11-18 10:43:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:43:47,966 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2018-11-18 10:43:47,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 10:43:47,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-11-18 10:43:47,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:43:47,969 INFO L225 Difference]: With dead ends: 62 [2018-11-18 10:43:47,969 INFO L226 Difference]: Without dead ends: 60 [2018-11-18 10:43:47,969 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-18 10:43:47,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-18 10:43:47,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2018-11-18 10:43:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-18 10:43:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2018-11-18 10:43:47,979 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 20 [2018-11-18 10:43:47,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:43:47,979 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2018-11-18 10:43:47,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 10:43:47,979 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2018-11-18 10:43:47,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 10:43:47,980 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:43:47,980 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:43:47,980 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:43:47,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:43:47,980 INFO L82 PathProgramCache]: Analyzing trace with hash -443407858, now seen corresponding path program 1 times [2018-11-18 10:43:47,980 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:43:47,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:43:47,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:47,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:47,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 10:43:48,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:43:48,094 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/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 [2018-11-18 10:43:48,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:48,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:43:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 10:43:48,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:43:48,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2018-11-18 10:43:48,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 10:43:48,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 10:43:48,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-11-18 10:43:48,160 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand 11 states. [2018-11-18 10:43:48,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:43:48,435 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2018-11-18 10:43:48,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 10:43:48,435 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-11-18 10:43:48,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:43:48,436 INFO L225 Difference]: With dead ends: 66 [2018-11-18 10:43:48,436 INFO L226 Difference]: Without dead ends: 64 [2018-11-18 10:43:48,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-11-18 10:43:48,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-18 10:43:48,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-11-18 10:43:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-18 10:43:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2018-11-18 10:43:48,445 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 25 [2018-11-18 10:43:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:43:48,446 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2018-11-18 10:43:48,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 10:43:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2018-11-18 10:43:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 10:43:48,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:43:48,447 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:43:48,447 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:43:48,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:43:48,448 INFO L82 PathProgramCache]: Analyzing trace with hash -105052009, now seen corresponding path program 1 times [2018-11-18 10:43:48,448 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:43:48,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:43:48,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:48,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:48,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 10:43:48,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:43:48,540 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/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 [2018-11-18 10:43:48,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:48,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:43:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 10:43:48,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:43:48,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2018-11-18 10:43:48,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 10:43:48,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 10:43:48,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-18 10:43:48,599 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand 9 states. [2018-11-18 10:43:48,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:43:48,805 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2018-11-18 10:43:48,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 10:43:48,806 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-11-18 10:43:48,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:43:48,806 INFO L225 Difference]: With dead ends: 72 [2018-11-18 10:43:48,807 INFO L226 Difference]: Without dead ends: 70 [2018-11-18 10:43:48,807 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-18 10:43:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-18 10:43:48,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2018-11-18 10:43:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-18 10:43:48,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2018-11-18 10:43:48,816 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 30 [2018-11-18 10:43:48,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:43:48,817 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2018-11-18 10:43:48,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 10:43:48,817 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2018-11-18 10:43:48,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 10:43:48,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:43:48,818 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:43:48,818 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:43:48,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:43:48,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1255310588, now seen corresponding path program 1 times [2018-11-18 10:43:48,819 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:43:48,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:43:48,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:48,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:48,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-18 10:43:48,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:43:48,897 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/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 [2018-11-18 10:43:48,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:48,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:43:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-18 10:43:48,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:43:48,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-11-18 10:43:48,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 10:43:48,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 10:43:48,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-18 10:43:48,999 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand 9 states. [2018-11-18 10:43:49,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:43:49,181 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2018-11-18 10:43:49,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 10:43:49,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2018-11-18 10:43:49,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:43:49,183 INFO L225 Difference]: With dead ends: 78 [2018-11-18 10:43:49,183 INFO L226 Difference]: Without dead ends: 76 [2018-11-18 10:43:49,183 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-18 10:43:49,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-18 10:43:49,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2018-11-18 10:43:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-18 10:43:49,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2018-11-18 10:43:49,191 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 48 [2018-11-18 10:43:49,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:43:49,192 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2018-11-18 10:43:49,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 10:43:49,192 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2018-11-18 10:43:49,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-18 10:43:49,193 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:43:49,193 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:43:49,194 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:43:49,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:43:49,194 INFO L82 PathProgramCache]: Analyzing trace with hash -979286812, now seen corresponding path program 1 times [2018-11-18 10:43:49,194 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:43:49,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:43:49,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:49,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:49,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-18 10:43:49,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:43:49,287 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/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 [2018-11-18 10:43:49,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:49,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:43:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-11-18 10:43:49,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:43:49,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2018-11-18 10:43:49,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 10:43:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 10:43:49,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-18 10:43:49,419 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand 11 states. [2018-11-18 10:43:49,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:43:49,676 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2018-11-18 10:43:49,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 10:43:49,676 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2018-11-18 10:43:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:43:49,677 INFO L225 Difference]: With dead ends: 82 [2018-11-18 10:43:49,677 INFO L226 Difference]: Without dead ends: 80 [2018-11-18 10:43:49,678 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-18 10:43:49,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-11-18 10:43:49,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2018-11-18 10:43:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-18 10:43:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2018-11-18 10:43:49,686 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 58 [2018-11-18 10:43:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:43:49,687 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2018-11-18 10:43:49,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 10:43:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2018-11-18 10:43:49,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-18 10:43:49,688 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:43:49,689 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:43:49,689 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:43:49,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:43:49,689 INFO L82 PathProgramCache]: Analyzing trace with hash -2026132663, now seen corresponding path program 1 times [2018-11-18 10:43:49,689 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:43:49,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:43:49,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:49,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:49,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:43:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-11-18 10:43:49,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:43:49,788 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/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 [2018-11-18 10:43:49,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:43:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:43:49,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:43:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-11-18 10:43:49,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:43:49,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 12 [2018-11-18 10:43:49,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 10:43:49,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 10:43:49,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-18 10:43:49,903 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand 12 states. [2018-11-18 10:43:50,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:43:50,213 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2018-11-18 10:43:50,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 10:43:50,213 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2018-11-18 10:43:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:43:50,214 INFO L225 Difference]: With dead ends: 80 [2018-11-18 10:43:50,214 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 10:43:50,214 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-11-18 10:43:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 10:43:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 10:43:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 10:43:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 10:43:50,215 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2018-11-18 10:43:50,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:43:50,215 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:43:50,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 10:43:50,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:43:50,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 10:43:50,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 10:43:50,227 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:43:50,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:43:50,251 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:43:50,273 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 10:43:50,620 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-11-18 10:43:50,748 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 10:43:50,748 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:43:50,748 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:43:50,748 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 10:43:50,748 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:43:50,748 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:43:50,748 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,749 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 53) no Hoare annotation was computed. [2018-11-18 10:43:50,749 INFO L421 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,749 INFO L421 ceAbstractionStarter]: At program point L23-1(line 23) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,749 INFO L421 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,749 INFO L421 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,749 INFO L421 ceAbstractionStarter]: At program point L32-1(line 32) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,749 INFO L421 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,749 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-18 10:43:50,749 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 51) no Hoare annotation was computed. [2018-11-18 10:43:50,750 INFO L421 ceAbstractionStarter]: At program point L20-3(lines 20 51) the Hoare annotation is: (and (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,750 INFO L425 ceAbstractionStarter]: For program point L20-4(lines 20 51) no Hoare annotation was computed. [2018-11-18 10:43:50,750 INFO L421 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,750 INFO L421 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,750 INFO L425 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-11-18 10:43:50,750 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-18 10:43:50,750 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 50) no Hoare annotation was computed. [2018-11-18 10:43:50,750 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 50) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,750 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-18 10:43:50,750 INFO L425 ceAbstractionStarter]: For program point L46(line 46) no Hoare annotation was computed. [2018-11-18 10:43:50,750 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 53) no Hoare annotation was computed. [2018-11-18 10:43:50,750 INFO L421 ceAbstractionStarter]: At program point L42(lines 22 49) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,751 INFO L421 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~j~0 3) main_~bufsize~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,751 INFO L421 ceAbstractionStarter]: At program point L38-1(line 38) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~j~0 3) main_~bufsize~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,751 INFO L421 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,751 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 53) the Hoare annotation is: true [2018-11-18 10:43:50,751 INFO L421 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,751 INFO L421 ceAbstractionStarter]: At program point L26-1(line 26) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,751 INFO L425 ceAbstractionStarter]: For program point L22(lines 22 49) no Hoare annotation was computed. [2018-11-18 10:43:50,751 INFO L421 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2018-11-18 10:43:50,751 INFO L425 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-11-18 10:43:50,751 INFO L425 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-11-18 10:43:50,752 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 10:43:50,752 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 10:43:50,752 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 10:43:50,752 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 10:43:50,752 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 10:43:50,752 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 10:43:50,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:43:50 BoogieIcfgContainer [2018-11-18 10:43:50,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:43:50,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:43:50,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:43:50,763 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:43:50,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:43:46" (3/4) ... [2018-11-18 10:43:50,766 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 10:43:50,770 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 10:43:50,771 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 10:43:50,771 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 10:43:50,774 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-11-18 10:43:50,774 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-18 10:43:50,774 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 10:43:50,818 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0c581fed-9124-4861-adf6-c0dbf64703fe/bin-2019/uautomizer/witness.graphml [2018-11-18 10:43:50,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:43:50,819 INFO L168 Benchmark]: Toolchain (without parser) took 4752.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 961.1 MB in the beginning and 1.0 GB in the end (delta: -41.0 MB). Peak memory consumption was 136.8 MB. Max. memory is 11.5 GB. [2018-11-18 10:43:50,819 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:43:50,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.39 ms. Allocated memory is still 1.0 GB. Free memory was 961.1 MB in the beginning and 950.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:43:50,820 INFO L168 Benchmark]: Boogie Preprocessor took 24.77 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 947.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:43:50,820 INFO L168 Benchmark]: RCFGBuilder took 378.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 947.7 MB in the beginning and 1.1 GB in the end (delta: -125.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:43:50,821 INFO L168 Benchmark]: TraceAbstraction took 4097.26 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 83.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.9 MB). Peak memory consumption was 148.8 MB. Max. memory is 11.5 GB. [2018-11-18 10:43:50,821 INFO L168 Benchmark]: Witness Printer took 55.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 11.5 GB. [2018-11-18 10:43:50,823 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 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 193.39 ms. Allocated memory is still 1.0 GB. Free memory was 961.1 MB in the beginning and 950.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.77 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 947.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 378.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 947.7 MB in the beginning and 1.1 GB in the end (delta: -125.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4097.26 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 83.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.9 MB). Peak memory consumption was 148.8 MB. Max. memory is 11.5 GB. * Witness Printer took 55.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 <= i && limit + 4 <= bufsize - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (0 <= j && 0 <= i) && limit + 4 <= bufsize - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((0 <= j && 0 <= i) && i + 1 <= len) && j + 5 <= bufsize) && limit + 4 <= bufsize - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 44 locations, 1 error locations. SAFE Result, 4.0s OverallTime, 8 OverallIterations, 11 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 328 SDtfs, 176 SDslu, 1285 SDs, 0 SdLazy, 1417 SolverSat, 221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 335 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=7, 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, 8 MinimizatonAttempts, 38 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 58 PreInvPairs, 82 NumberOfFragments, 368 HoareAnnotationTreeSize, 58 FomulaSimplifications, 3237 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 23 FomulaSimplificationsInter, 48 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 530 NumberOfCodeBlocks, 530 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 516 ConstructedInterpolants, 0 QuantifiedInterpolants, 56646 SizeOfPredicates, 15 NumberOfNonLiveVariables, 538 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 778/856 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...