./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c --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_62d3d3ec-007c-45dc-86d9-0ad115229609/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/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 f345f307410a5ddbdd0513896d69ca703c67be23 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:54:07,809 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:54:07,810 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:54:07,817 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:54:07,818 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:54:07,818 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:54:07,819 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:54:07,820 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:54:07,822 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:54:07,822 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:54:07,823 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:54:07,823 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:54:07,824 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:54:07,825 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:54:07,826 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:54:07,827 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:54:07,827 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:54:07,829 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:54:07,830 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:54:07,831 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:54:07,832 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:54:07,833 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:54:07,835 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:54:07,835 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:54:07,835 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:54:07,836 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:54:07,837 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:54:07,837 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:54:07,839 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:54:07,839 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:54:07,839 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:54:07,840 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:54:07,840 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:54:07,840 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:54:07,841 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:54:07,841 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:54:07,842 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 16:54:07,851 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:54:07,851 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:54:07,852 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:54:07,852 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 16:54:07,853 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:54:07,853 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:54:07,853 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 16:54:07,853 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:54:07,853 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:54:07,853 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:54:07,853 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:54:07,853 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:54:07,854 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:54:07,854 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:54:07,854 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:54:07,854 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:54:07,854 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:54:07,854 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:54:07,854 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:54:07,854 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:54:07,854 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:54:07,855 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:54:07,855 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:54:07,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:54:07,855 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:54:07,855 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:54:07,855 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:54:07,855 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 16:54:07,855 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:54:07,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:54:07,855 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_62d3d3ec-007c-45dc-86d9-0ad115229609/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 -> f345f307410a5ddbdd0513896d69ca703c67be23 [2018-11-18 16:54:07,880 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:54:07,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:54:07,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:54:07,893 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:54:07,893 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:54:07,893 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c [2018-11-18 16:54:07,934 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/bin-2019/uautomizer/data/b8f7885af/5470eb242912400ca89f1ba7131852d3/FLAGbcb8720de [2018-11-18 16:54:08,333 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:54:08,333 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/sv-benchmarks/c/recursive-simple/id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c [2018-11-18 16:54:08,338 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/bin-2019/uautomizer/data/b8f7885af/5470eb242912400ca89f1ba7131852d3/FLAGbcb8720de [2018-11-18 16:54:08,348 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/bin-2019/uautomizer/data/b8f7885af/5470eb242912400ca89f1ba7131852d3 [2018-11-18 16:54:08,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:54:08,351 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 16:54:08,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:54:08,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:54:08,354 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:54:08,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:54:08" (1/1) ... [2018-11-18 16:54:08,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77041c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:08, skipping insertion in model container [2018-11-18 16:54:08,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:54:08" (1/1) ... [2018-11-18 16:54:08,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:54:08,374 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:54:08,488 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:54:08,490 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:54:08,501 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:54:08,510 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:54:08,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:08 WrapperNode [2018-11-18 16:54:08,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:54:08,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:54:08,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:54:08,511 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:54:08,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:08" (1/1) ... [2018-11-18 16:54:08,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:08" (1/1) ... [2018-11-18 16:54:08,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:08" (1/1) ... [2018-11-18 16:54:08,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:08" (1/1) ... [2018-11-18 16:54:08,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:08" (1/1) ... [2018-11-18 16:54:08,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:08" (1/1) ... [2018-11-18 16:54:08,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:08" (1/1) ... [2018-11-18 16:54:08,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:54:08,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:54:08,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:54:08,528 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:54:08,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/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 16:54:08,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:54:08,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:54:08,601 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-18 16:54:08,601 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2018-11-18 16:54:08,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:54:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2018-11-18 16:54:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 16:54:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-18 16:54:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2018-11-18 16:54:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:54:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:54:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:54:08,725 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:54:08,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:54:08 BoogieIcfgContainer [2018-11-18 16:54:08,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:54:08,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:54:08,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:54:08,729 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:54:08,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:54:08" (1/3) ... [2018-11-18 16:54:08,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427b03a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:54:08, skipping insertion in model container [2018-11-18 16:54:08,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:08" (2/3) ... [2018-11-18 16:54:08,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427b03a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:54:08, skipping insertion in model container [2018-11-18 16:54:08,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:54:08" (3/3) ... [2018-11-18 16:54:08,732 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c [2018-11-18 16:54:08,740 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:54:08,746 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:54:08,758 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:54:08,783 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:54:08,783 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:54:08,783 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:54:08,783 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:54:08,784 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:54:08,784 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:54:08,784 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:54:08,784 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:54:08,784 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:54:08,798 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-18 16:54:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 16:54:08,803 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:08,804 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:08,805 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:08,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:08,810 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2018-11-18 16:54:08,811 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:08,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:08,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:08,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:08,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:08,985 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 16:54:08,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:08,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:54:08,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:54:08,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:54:08,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:08,999 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-11-18 16:54:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:09,032 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-11-18 16:54:09,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:54:09,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-18 16:54:09,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:09,039 INFO L225 Difference]: With dead ends: 40 [2018-11-18 16:54:09,039 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 16:54:09,042 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 16:54:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 16:54:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 16:54:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-18 16:54:09,070 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-11-18 16:54:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:09,070 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-18 16:54:09,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:54:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-18 16:54:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 16:54:09,072 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:09,072 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:09,072 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:09,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:09,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2018-11-18 16:54:09,072 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:09,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:09,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:09,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:09,163 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 16:54:09,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:09,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:54:09,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:54:09,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:54:09,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:09,166 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-11-18 16:54:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:09,190 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2018-11-18 16:54:09,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:54:09,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-18 16:54:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:09,192 INFO L225 Difference]: With dead ends: 44 [2018-11-18 16:54:09,192 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 16:54:09,193 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:09,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 16:54:09,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-18 16:54:09,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 16:54:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-18 16:54:09,199 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-11-18 16:54:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:09,199 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-18 16:54:09,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:54:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-18 16:54:09,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 16:54:09,200 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:09,200 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:09,200 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:09,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:09,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2018-11-18 16:54:09,201 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:09,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:09,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:09,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:09,320 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 16:54:09,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:09,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 16:54:09,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 16:54:09,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 16:54:09,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:54:09,321 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2018-11-18 16:54:09,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:09,352 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-18 16:54:09,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 16:54:09,352 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-11-18 16:54:09,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:09,353 INFO L225 Difference]: With dead ends: 36 [2018-11-18 16:54:09,353 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 16:54:09,354 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:54:09,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 16:54:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-18 16:54:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 16:54:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-18 16:54:09,358 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-11-18 16:54:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:09,358 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-18 16:54:09,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 16:54:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-18 16:54:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 16:54:09,359 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:09,359 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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 16:54:09,360 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:09,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:09,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1423155149, now seen corresponding path program 1 times [2018-11-18 16:54:09,360 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:09,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:09,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:09,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 16:54:09,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:09,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:54:09,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:54:09,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:54:09,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:09,422 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2018-11-18 16:54:09,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:09,436 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-11-18 16:54:09,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:54:09,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-18 16:54:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:09,438 INFO L225 Difference]: With dead ends: 48 [2018-11-18 16:54:09,438 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 16:54:09,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 16:54:09,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-11-18 16:54:09,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 16:54:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-11-18 16:54:09,442 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-11-18 16:54:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:09,442 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-11-18 16:54:09,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:54:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-11-18 16:54:09,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 16:54:09,443 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:09,443 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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 16:54:09,443 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:09,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:09,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1226641644, now seen corresponding path program 1 times [2018-11-18 16:54:09,444 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:09,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:09,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:09,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 16:54:09,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:09,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:54:09,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:54:09,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:54:09,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:09,519 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-11-18 16:54:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:09,529 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-11-18 16:54:09,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:54:09,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-18 16:54:09,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:09,530 INFO L225 Difference]: With dead ends: 40 [2018-11-18 16:54:09,530 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 16:54:09,531 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:09,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 16:54:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-11-18 16:54:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 16:54:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-11-18 16:54:09,535 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-11-18 16:54:09,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:09,535 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-11-18 16:54:09,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:54:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-11-18 16:54:09,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 16:54:09,536 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:09,536 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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 16:54:09,536 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:09,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:09,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2018-11-18 16:54:09,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:09,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:09,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:09,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:09,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 16:54:09,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:54:09,706 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/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 16:54:09,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:09,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:54:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 16:54:09,828 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:54:09,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-11-18 16:54:09,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 16:54:09,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 16:54:09,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-11-18 16:54:09,829 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 12 states. [2018-11-18 16:54:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:09,932 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-11-18 16:54:09,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 16:54:09,933 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-11-18 16:54:09,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:09,934 INFO L225 Difference]: With dead ends: 58 [2018-11-18 16:54:09,934 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 16:54:09,934 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-11-18 16:54:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 16:54:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2018-11-18 16:54:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 16:54:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-11-18 16:54:09,938 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-11-18 16:54:09,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:09,939 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-11-18 16:54:09,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 16:54:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-11-18 16:54:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 16:54:09,939 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:09,939 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:09,940 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:09,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:09,940 INFO L82 PathProgramCache]: Analyzing trace with hash 906172561, now seen corresponding path program 1 times [2018-11-18 16:54:09,940 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:09,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:09,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:09,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 16:54:10,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:10,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:54:10,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:54:10,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:54:10,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:10,023 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-11-18 16:54:10,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:10,052 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-11-18 16:54:10,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:54:10,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-11-18 16:54:10,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:10,053 INFO L225 Difference]: With dead ends: 54 [2018-11-18 16:54:10,053 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 16:54:10,054 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:54:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 16:54:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-11-18 16:54:10,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 16:54:10,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-18 16:54:10,057 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 34 [2018-11-18 16:54:10,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:10,057 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-18 16:54:10,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:54:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-18 16:54:10,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 16:54:10,058 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:10,058 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:10,058 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:10,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:10,058 INFO L82 PathProgramCache]: Analyzing trace with hash 709659056, now seen corresponding path program 1 times [2018-11-18 16:54:10,058 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:10,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:10,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:10,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:10,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 16:54:10,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:54:10,178 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/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 16:54:10,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:10,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:54:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 16:54:10,251 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:54:10,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-11-18 16:54:10,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 16:54:10,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 16:54:10,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-11-18 16:54:10,252 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 12 states. [2018-11-18 16:54:10,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:10,327 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2018-11-18 16:54:10,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 16:54:10,328 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-11-18 16:54:10,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:10,329 INFO L225 Difference]: With dead ends: 70 [2018-11-18 16:54:10,329 INFO L226 Difference]: Without dead ends: 52 [2018-11-18 16:54:10,330 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-11-18 16:54:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-18 16:54:10,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2018-11-18 16:54:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 16:54:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2018-11-18 16:54:10,334 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 34 [2018-11-18 16:54:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:10,335 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2018-11-18 16:54:10,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 16:54:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2018-11-18 16:54:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 16:54:10,337 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:10,337 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:10,337 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:54:10,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:10,338 INFO L82 PathProgramCache]: Analyzing trace with hash -797786941, now seen corresponding path program 2 times [2018-11-18 16:54:10,338 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:10,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:10,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:10,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:10,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 16:54:10,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:54:10,514 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/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 16:54:10,520 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 16:54:10,531 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 16:54:10,531 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:54:10,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:54:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 16:54:10,558 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:54:10,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 17 [2018-11-18 16:54:10,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 16:54:10,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 16:54:10,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-11-18 16:54:10,559 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 17 states. [2018-11-18 16:54:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:10,629 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2018-11-18 16:54:10,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 16:54:10,630 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2018-11-18 16:54:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:10,631 INFO L225 Difference]: With dead ends: 58 [2018-11-18 16:54:10,631 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 16:54:10,631 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2018-11-18 16:54:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 16:54:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 16:54:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 16:54:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 16:54:10,632 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2018-11-18 16:54:10,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:10,632 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:54:10,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 16:54:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 16:54:10,633 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 16:54:10,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 16:54:10,650 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 16:54:10,651 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:54:10,651 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-18 16:54:10,651 INFO L428 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: true [2018-11-18 16:54:10,651 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-18 16:54:10,651 INFO L425 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-11-18 16:54:10,651 INFO L425 ceAbstractionStarter]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2018-11-18 16:54:10,651 INFO L428 ceAbstractionStarter]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2018-11-18 16:54:10,651 INFO L425 ceAbstractionStarter]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2018-11-18 16:54:10,651 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:54:10,651 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 16:54:10,651 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 16:54:10,651 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 16:54:10,652 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2018-11-18 16:54:10,652 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-18 16:54:10,652 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2018-11-18 16:54:10,652 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-11-18 16:54:10,652 INFO L428 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: true [2018-11-18 16:54:10,652 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2018-11-18 16:54:10,652 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-18 16:54:10,652 INFO L425 ceAbstractionStarter]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2018-11-18 16:54:10,652 INFO L425 ceAbstractionStarter]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2018-11-18 16:54:10,652 INFO L425 ceAbstractionStarter]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2018-11-18 16:54:10,652 INFO L425 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-11-18 16:54:10,653 INFO L428 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: true [2018-11-18 16:54:10,653 INFO L425 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-11-18 16:54:10,653 INFO L425 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-11-18 16:54:10,653 INFO L428 ceAbstractionStarter]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2018-11-18 16:54:10,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:54:10 BoogieIcfgContainer [2018-11-18 16:54:10,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:54:10,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:54:10,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:54:10,656 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:54:10,656 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:54:08" (3/4) ... [2018-11-18 16:54:10,658 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 16:54:10,663 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 16:54:10,663 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2018-11-18 16:54:10,663 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 16:54:10,664 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-18 16:54:10,666 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 16:54:10,667 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 16:54:10,667 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 16:54:10,696 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_62d3d3ec-007c-45dc-86d9-0ad115229609/bin-2019/uautomizer/witness.graphml [2018-11-18 16:54:10,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:54:10,697 INFO L168 Benchmark]: Toolchain (without parser) took 2346.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 955.4 MB in the beginning and 869.2 MB in the end (delta: 86.2 MB). Peak memory consumption was 236.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:10,698 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 977.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:54:10,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.94 ms. Allocated memory is still 1.0 GB. Free memory was 955.4 MB in the beginning and 944.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:10,699 INFO L168 Benchmark]: Boogie Preprocessor took 16.72 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 939.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:10,699 INFO L168 Benchmark]: RCFGBuilder took 197.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -192.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:10,699 INFO L168 Benchmark]: TraceAbstraction took 1928.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 869.2 MB in the end (delta: 262.4 MB). Peak memory consumption was 262.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:10,700 INFO L168 Benchmark]: Witness Printer took 40.70 ms. Allocated memory is still 1.2 GB. Free memory is still 869.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:54:10,701 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 977.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 159.94 ms. Allocated memory is still 1.0 GB. Free memory was 955.4 MB in the beginning and 944.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.72 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 939.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 197.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -192.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1928.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 869.2 MB in the end (delta: 262.4 MB). Peak memory consumption was 262.4 MB. Max. memory is 11.5 GB. * Witness Printer took 40.70 ms. Allocated memory is still 1.2 GB. Free memory is still 869.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 262 SDtfs, 28 SDslu, 1482 SDs, 0 SdLazy, 323 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 109 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=8, 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, 9 MinimizatonAttempts, 24 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 333 ConstructedInterpolants, 0 QuantifiedInterpolants, 31593 SizeOfPredicates, 10 NumberOfNonLiveVariables, 225 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 61/93 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...