./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/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_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/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 0.1.23-635dfa2 [2018-12-08 11:33:04,504 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 11:33:04,505 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 11:33:04,513 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 11:33:04,513 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 11:33:04,514 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 11:33:04,514 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 11:33:04,515 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 11:33:04,516 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 11:33:04,517 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 11:33:04,518 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 11:33:04,518 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 11:33:04,519 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 11:33:04,519 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 11:33:04,520 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 11:33:04,520 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 11:33:04,521 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 11:33:04,522 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 11:33:04,523 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 11:33:04,524 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 11:33:04,525 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 11:33:04,526 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 11:33:04,528 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 11:33:04,528 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 11:33:04,528 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 11:33:04,529 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 11:33:04,529 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 11:33:04,530 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 11:33:04,531 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 11:33:04,531 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 11:33:04,531 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 11:33:04,532 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 11:33:04,532 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 11:33:04,532 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 11:33:04,533 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 11:33:04,533 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 11:33:04,534 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 11:33:04,544 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 11:33:04,544 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 11:33:04,544 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 11:33:04,545 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 11:33:04,545 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 11:33:04,545 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 11:33:04,545 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 11:33:04,546 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 11:33:04,546 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 11:33:04,546 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 11:33:04,546 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 11:33:04,546 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 11:33:04,546 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 11:33:04,546 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 11:33:04,546 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 11:33:04,546 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 11:33:04,546 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 11:33:04,547 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 11:33:04,547 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 11:33:04,547 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 11:33:04,547 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 11:33:04,547 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 11:33:04,547 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 11:33:04,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 11:33:04,547 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 11:33:04,548 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 11:33:04,548 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 11:33:04,548 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 11:33:04,548 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 11:33:04,548 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 11:33:04,548 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_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/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 [2018-12-08 11:33:04,571 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 11:33:04,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 11:33:04,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 11:33:04,583 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 11:33:04,584 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 11:33:04,584 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c [2018-12-08 11:33:04,623 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/data/5904519c1/7592590baf794e42a2e05dccfbeb174c/FLAGef23adce1 [2018-12-08 11:33:04,962 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 11:33:04,963 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/sv-benchmarks/c/recursive-simple/id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c [2018-12-08 11:33:04,966 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/data/5904519c1/7592590baf794e42a2e05dccfbeb174c/FLAGef23adce1 [2018-12-08 11:33:04,975 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/data/5904519c1/7592590baf794e42a2e05dccfbeb174c [2018-12-08 11:33:04,978 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 11:33:04,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 11:33:04,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 11:33:04,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 11:33:04,983 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 11:33:04,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:33:04" (1/1) ... [2018-12-08 11:33:04,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7084b22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:04, skipping insertion in model container [2018-12-08 11:33:04,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:33:04" (1/1) ... [2018-12-08 11:33:04,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 11:33:05,000 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 11:33:05,093 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 11:33:05,095 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 11:33:05,105 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 11:33:05,113 INFO L195 MainTranslator]: Completed translation [2018-12-08 11:33:05,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05 WrapperNode [2018-12-08 11:33:05,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 11:33:05,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 11:33:05,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 11:33:05,114 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 11:33:05,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05" (1/1) ... [2018-12-08 11:33:05,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05" (1/1) ... [2018-12-08 11:33:05,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 11:33:05,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 11:33:05,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 11:33:05,127 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 11:33:05,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05" (1/1) ... [2018-12-08 11:33:05,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05" (1/1) ... [2018-12-08 11:33:05,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05" (1/1) ... [2018-12-08 11:33:05,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05" (1/1) ... [2018-12-08 11:33:05,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05" (1/1) ... [2018-12-08 11:33:05,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05" (1/1) ... [2018-12-08 11:33:05,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05" (1/1) ... [2018-12-08 11:33:05,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 11:33:05,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 11:33:05,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 11:33:05,137 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 11:33:05,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 11:33:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 11:33:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 11:33:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2018-12-08 11:33:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2018-12-08 11:33:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 11:33:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 11:33:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 11:33:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 11:33:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-12-08 11:33:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-12-08 11:33:05,289 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 11:33:05,289 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-08 11:33:05,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:33:05 BoogieIcfgContainer [2018-12-08 11:33:05,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 11:33:05,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 11:33:05,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 11:33:05,292 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 11:33:05,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 11:33:04" (1/3) ... [2018-12-08 11:33:05,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228735e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:33:05, skipping insertion in model container [2018-12-08 11:33:05,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:33:05" (2/3) ... [2018-12-08 11:33:05,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228735e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:33:05, skipping insertion in model container [2018-12-08 11:33:05,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:33:05" (3/3) ... [2018-12-08 11:33:05,294 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_b2_o3_true-unreach-call_true-termination_true-no-overflow.c [2018-12-08 11:33:05,299 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 11:33:05,303 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 11:33:05,312 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 11:33:05,329 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 11:33:05,329 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 11:33:05,329 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 11:33:05,329 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 11:33:05,329 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 11:33:05,329 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 11:33:05,329 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 11:33:05,329 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 11:33:05,329 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 11:33:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-12-08 11:33:05,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 11:33:05,343 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 11:33:05,343 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 11:33:05,344 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 11:33:05,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:33:05,348 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2018-12-08 11:33:05,349 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:33:05,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:33:05,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:33:05,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:33:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 11:33:05,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 11:33:05,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 11:33:05,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 11:33:05,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 11:33:05,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 11:33:05,487 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-12-08 11:33:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 11:33:05,511 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-12-08 11:33:05,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 11:33:05,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-08 11:33:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 11:33:05,518 INFO L225 Difference]: With dead ends: 40 [2018-12-08 11:33:05,518 INFO L226 Difference]: Without dead ends: 26 [2018-12-08 11:33:05,520 INFO L631 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 [2018-12-08 11:33:05,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-08 11:33:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-08 11:33:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-08 11:33:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-12-08 11:33:05,543 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-12-08 11:33:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 11:33:05,543 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-12-08 11:33:05,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 11:33:05,543 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-12-08 11:33:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-08 11:33:05,544 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 11:33:05,544 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 11:33:05,545 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 11:33:05,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:33:05,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2018-12-08 11:33:05,545 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:33:05,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:33:05,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:33:05,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:33:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 11:33:05,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 11:33:05,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 11:33:05,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 11:33:05,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 11:33:05,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 11:33:05,598 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-12-08 11:33:05,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 11:33:05,611 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2018-12-08 11:33:05,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 11:33:05,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-08 11:33:05,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 11:33:05,612 INFO L225 Difference]: With dead ends: 44 [2018-12-08 11:33:05,612 INFO L226 Difference]: Without dead ends: 32 [2018-12-08 11:33:05,613 INFO L631 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 [2018-12-08 11:33:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-08 11:33:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-12-08 11:33:05,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-08 11:33:05,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-12-08 11:33:05,617 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-12-08 11:33:05,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 11:33:05,617 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-12-08 11:33:05,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 11:33:05,617 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-12-08 11:33:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-08 11:33:05,617 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 11:33:05,617 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 11:33:05,618 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 11:33:05,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:33:05,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2018-12-08 11:33:05,618 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:33:05,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:33:05,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:33:05,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:33:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 11:33:05,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 11:33:05,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 11:33:05,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 11:33:05,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 11:33:05,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 11:33:05,697 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2018-12-08 11:33:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 11:33:05,735 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-08 11:33:05,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 11:33:05,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-12-08 11:33:05,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 11:33:05,737 INFO L225 Difference]: With dead ends: 36 [2018-12-08 11:33:05,737 INFO L226 Difference]: Without dead ends: 32 [2018-12-08 11:33:05,737 INFO L631 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 [2018-12-08 11:33:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-08 11:33:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-12-08 11:33:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-08 11:33:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-12-08 11:33:05,741 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-12-08 11:33:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 11:33:05,742 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-12-08 11:33:05,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 11:33:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-12-08 11:33:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 11:33:05,742 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 11:33:05,742 INFO L402 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] [2018-12-08 11:33:05,743 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 11:33:05,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:33:05,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1423155149, now seen corresponding path program 1 times [2018-12-08 11:33:05,743 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:33:05,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:33:05,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:33:05,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:33:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 11:33:05,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 11:33:05,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 11:33:05,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 11:33:05,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 11:33:05,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 11:33:05,789 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2018-12-08 11:33:05,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 11:33:05,801 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-12-08 11:33:05,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 11:33:05,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-12-08 11:33:05,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 11:33:05,802 INFO L225 Difference]: With dead ends: 48 [2018-12-08 11:33:05,802 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 11:33:05,802 INFO L631 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 [2018-12-08 11:33:05,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 11:33:05,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-12-08 11:33:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-08 11:33:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-08 11:33:05,807 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-12-08 11:33:05,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 11:33:05,807 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-08 11:33:05,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 11:33:05,807 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-08 11:33:05,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 11:33:05,808 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 11:33:05,808 INFO L402 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] [2018-12-08 11:33:05,808 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 11:33:05,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:33:05,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1226641644, now seen corresponding path program 1 times [2018-12-08 11:33:05,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:33:05,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:33:05,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:33:05,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:33:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 11:33:05,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 11:33:05,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 11:33:05,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 11:33:05,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 11:33:05,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 11:33:05,853 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-12-08 11:33:05,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 11:33:05,861 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-12-08 11:33:05,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 11:33:05,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-12-08 11:33:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 11:33:05,861 INFO L225 Difference]: With dead ends: 40 [2018-12-08 11:33:05,862 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 11:33:05,862 INFO L631 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 [2018-12-08 11:33:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 11:33:05,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-12-08 11:33:05,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-08 11:33:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-08 11:33:05,865 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-12-08 11:33:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 11:33:05,865 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-08 11:33:05,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 11:33:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-08 11:33:05,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 11:33:05,865 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 11:33:05,865 INFO L402 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] [2018-12-08 11:33:05,866 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 11:33:05,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:33:05,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2018-12-08 11:33:05,866 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:33:05,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:33:05,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:33:05,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:33:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 11:33:05,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 11:33:05,939 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 11:33:05,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:33:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:33:05,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:33:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 11:33:06,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 11:33:06,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-12-08 11:33:06,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-08 11:33:06,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-08 11:33:06,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-12-08 11:33:06,028 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 12 states. [2018-12-08 11:33:06,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 11:33:06,096 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-12-08 11:33:06,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-08 11:33:06,096 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-12-08 11:33:06,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 11:33:06,097 INFO L225 Difference]: With dead ends: 58 [2018-12-08 11:33:06,097 INFO L226 Difference]: Without dead ends: 42 [2018-12-08 11:33:06,098 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-12-08 11:33:06,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-08 11:33:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2018-12-08 11:33:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-08 11:33:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-08 11:33:06,101 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-12-08 11:33:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 11:33:06,102 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-08 11:33:06,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-08 11:33:06,102 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-08 11:33:06,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-08 11:33:06,102 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 11:33:06,103 INFO L402 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] [2018-12-08 11:33:06,103 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 11:33:06,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:33:06,103 INFO L82 PathProgramCache]: Analyzing trace with hash 906172561, now seen corresponding path program 1 times [2018-12-08 11:33:06,103 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:33:06,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:33:06,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:06,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:33:06,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:33:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-08 11:33:06,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 11:33:06,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 11:33:06,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 11:33:06,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 11:33:06,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 11:33:06,150 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-12-08 11:33:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 11:33:06,163 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-12-08 11:33:06,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 11:33:06,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-12-08 11:33:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 11:33:06,164 INFO L225 Difference]: With dead ends: 54 [2018-12-08 11:33:06,164 INFO L226 Difference]: Without dead ends: 40 [2018-12-08 11:33:06,164 INFO L631 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 [2018-12-08 11:33:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-08 11:33:06,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-12-08 11:33:06,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-08 11:33:06,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-12-08 11:33:06,169 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 34 [2018-12-08 11:33:06,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 11:33:06,169 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-12-08 11:33:06,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 11:33:06,169 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-12-08 11:33:06,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-08 11:33:06,170 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 11:33:06,170 INFO L402 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] [2018-12-08 11:33:06,170 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 11:33:06,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:33:06,171 INFO L82 PathProgramCache]: Analyzing trace with hash 709659056, now seen corresponding path program 1 times [2018-12-08 11:33:06,171 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:33:06,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:33:06,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:06,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:33:06,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:33:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-08 11:33:06,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 11:33:06,279 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 11:33:06,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:33:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:33:06,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:33:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-08 11:33:06,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 11:33:06,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-12-08 11:33:06,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-08 11:33:06,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-08 11:33:06,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-12-08 11:33:06,328 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 12 states. [2018-12-08 11:33:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 11:33:06,384 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2018-12-08 11:33:06,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-08 11:33:06,385 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-12-08 11:33:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 11:33:06,386 INFO L225 Difference]: With dead ends: 70 [2018-12-08 11:33:06,386 INFO L226 Difference]: Without dead ends: 52 [2018-12-08 11:33:06,386 INFO L631 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 [2018-12-08 11:33:06,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-08 11:33:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2018-12-08 11:33:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-08 11:33:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2018-12-08 11:33:06,390 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 34 [2018-12-08 11:33:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 11:33:06,390 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2018-12-08 11:33:06,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-08 11:33:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2018-12-08 11:33:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-12-08 11:33:06,391 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 11:33:06,392 INFO L402 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] [2018-12-08 11:33:06,392 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 11:33:06,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:33:06,392 INFO L82 PathProgramCache]: Analyzing trace with hash -797786941, now seen corresponding path program 2 times [2018-12-08 11:33:06,392 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:33:06,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:33:06,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:06,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:33:06,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:33:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:33:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-08 11:33:06,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 11:33:06,556 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 11:33:06,561 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 11:33:06,570 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 11:33:06,571 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 11:33:06,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:33:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-08 11:33:06,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 11:33:06,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 17 [2018-12-08 11:33:06,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-08 11:33:06,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-08 11:33:06,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-12-08 11:33:06,596 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 17 states. [2018-12-08 11:33:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 11:33:06,671 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2018-12-08 11:33:06,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-08 11:33:06,672 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2018-12-08 11:33:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 11:33:06,672 INFO L225 Difference]: With dead ends: 58 [2018-12-08 11:33:06,672 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 11:33:06,673 INFO L631 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 [2018-12-08 11:33:06,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 11:33:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 11:33:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 11:33:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 11:33:06,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2018-12-08 11:33:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 11:33:06,673 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 11:33:06,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-08 11:33:06,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 11:33:06,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 11:33:06,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 11:33:06,685 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-08 11:33:06,686 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 11:33:06,686 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-12-08 11:33:06,686 INFO L451 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: true [2018-12-08 11:33:06,686 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-12-08 11:33:06,686 INFO L448 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-12-08 11:33:06,686 INFO L448 ceAbstractionStarter]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2018-12-08 11:33:06,686 INFO L451 ceAbstractionStarter]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2018-12-08 11:33:06,686 INFO L448 ceAbstractionStarter]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2018-12-08 11:33:06,686 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 11:33:06,686 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 11:33:06,686 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 11:33:06,686 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 11:33:06,686 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2018-12-08 11:33:06,686 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-12-08 11:33:06,686 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2018-12-08 11:33:06,687 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-12-08 11:33:06,687 INFO L451 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: true [2018-12-08 11:33:06,687 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-12-08 11:33:06,687 INFO L448 ceAbstractionStarter]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2018-12-08 11:33:06,687 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2018-12-08 11:33:06,687 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2018-12-08 11:33:06,687 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2018-12-08 11:33:06,687 INFO L448 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-12-08 11:33:06,687 INFO L451 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: true [2018-12-08 11:33:06,687 INFO L448 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-12-08 11:33:06,688 INFO L448 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-12-08 11:33:06,688 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2018-12-08 11:33:06,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 11:33:06 BoogieIcfgContainer [2018-12-08 11:33:06,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 11:33:06,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 11:33:06,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 11:33:06,690 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 11:33:06,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:33:05" (3/4) ... [2018-12-08 11:33:06,694 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 11:33:06,698 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 11:33:06,698 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2018-12-08 11:33:06,698 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 11:33:06,698 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-12-08 11:33:06,701 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-08 11:33:06,701 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-08 11:33:06,701 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 11:33:06,731 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e9d17043-45ec-4bfc-8fe0-0b56b74ee93c/bin-2019/uautomizer/witness.graphml [2018-12-08 11:33:06,731 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 11:33:06,731 INFO L168 Benchmark]: Toolchain (without parser) took 1753.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -122.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 11:33:06,732 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 11:33:06,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.26 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-08 11:33:06,733 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.12 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 11:33:06,733 INFO L168 Benchmark]: Boogie Preprocessor took 10.50 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 11:33:06,733 INFO L168 Benchmark]: RCFGBuilder took 152.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -141.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2018-12-08 11:33:06,734 INFO L168 Benchmark]: TraceAbstraction took 1399.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2018-12-08 11:33:06,734 INFO L168 Benchmark]: Witness Printer took 40.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-08 11:33:06,736 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 134.26 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.12 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.50 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 152.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -141.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1399.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. * Witness Printer took 40.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. 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, 1.3s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 262 SDtfs, 28 SDslu, 1482 SDs, 0 SdLazy, 323 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 109 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s 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, 0.0s SatisfiabilityAnalysisTime, 0.6s 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...