./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/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 6b2483ed4878f440f5477fb40e4fe96958613e0f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 10:01:45,994 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:01:45,995 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:01:46,005 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:01:46,005 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:01:46,006 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:01:46,007 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:01:46,008 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:01:46,009 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:01:46,010 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:01:46,010 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:01:46,011 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:01:46,011 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:01:46,012 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:01:46,013 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:01:46,014 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:01:46,015 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:01:46,016 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:01:46,018 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:01:46,019 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:01:46,020 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:01:46,021 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:01:46,023 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:01:46,023 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:01:46,023 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:01:46,024 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:01:46,025 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:01:46,026 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:01:46,026 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:01:46,027 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:01:46,027 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:01:46,028 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:01:46,028 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:01:46,028 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:01:46,029 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:01:46,030 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:01:46,030 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 10:01:46,040 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:01:46,040 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:01:46,041 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:01:46,041 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 10:01:46,042 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:01:46,042 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:01:46,042 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:01:46,042 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:01:46,042 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:01:46,042 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:01:46,043 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:01:46,043 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:01:46,043 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:01:46,043 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:01:46,043 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:01:46,043 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:01:46,043 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:01:46,043 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:01:46,044 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:01:46,044 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:01:46,044 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:01:46,044 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:01:46,044 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:01:46,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:01:46,045 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:01:46,046 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:01:46,046 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:01:46,046 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:01:46,046 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:01:46,046 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:01:46,046 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_99116130-3671-4d34-9f8f-011dbfb4efb7/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 -> 6b2483ed4878f440f5477fb40e4fe96958613e0f [2018-11-18 10:01:46,071 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:01:46,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:01:46,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:01:46,084 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:01:46,084 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:01:46,085 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i [2018-11-18 10:01:46,133 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/data/e078264c0/2e9a4c70a9e340d88865206e43fc13fd/FLAG56f9c7b97 [2018-11-18 10:01:46,461 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:01:46,462 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/sv-benchmarks/c/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i [2018-11-18 10:01:46,466 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/data/e078264c0/2e9a4c70a9e340d88865206e43fc13fd/FLAG56f9c7b97 [2018-11-18 10:01:46,924 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/data/e078264c0/2e9a4c70a9e340d88865206e43fc13fd [2018-11-18 10:01:46,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:01:46,928 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:01:46,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:01:46,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:01:46,932 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:01:46,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:01:46" (1/1) ... [2018-11-18 10:01:46,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383ef775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:46, skipping insertion in model container [2018-11-18 10:01:46,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:01:46" (1/1) ... [2018-11-18 10:01:46,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:01:46,960 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:01:47,064 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:01:47,067 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:01:47,077 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:01:47,085 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:01:47,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:47 WrapperNode [2018-11-18 10:01:47,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:01:47,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:01:47,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:01:47,086 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:01:47,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:47" (1/1) ... [2018-11-18 10:01:47,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:47" (1/1) ... [2018-11-18 10:01:47,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:47" (1/1) ... [2018-11-18 10:01:47,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:47" (1/1) ... [2018-11-18 10:01:47,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:47" (1/1) ... [2018-11-18 10:01:47,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:47" (1/1) ... [2018-11-18 10:01:47,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:47" (1/1) ... [2018-11-18 10:01:47,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:01:47,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:01:47,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:01:47,110 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:01:47,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:01:47,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:01:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:01:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 10:01:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:01:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:01:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 10:01:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 10:01:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 10:01:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:01:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:01:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:01:47,345 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:01:47,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:01:47 BoogieIcfgContainer [2018-11-18 10:01:47,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:01:47,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:01:47,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:01:47,349 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:01:47,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:01:46" (1/3) ... [2018-11-18 10:01:47,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720f483d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:01:47, skipping insertion in model container [2018-11-18 10:01:47,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:47" (2/3) ... [2018-11-18 10:01:47,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720f483d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:01:47, skipping insertion in model container [2018-11-18 10:01:47,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:01:47" (3/3) ... [2018-11-18 10:01:47,353 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_variant_true-unreach-call_true-termination.c.i [2018-11-18 10:01:47,361 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:01:47,372 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:01:47,385 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:01:47,410 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:01:47,411 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:01:47,411 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:01:47,411 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:01:47,411 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:01:47,411 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:01:47,412 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:01:47,412 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:01:47,412 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:01:47,429 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-18 10:01:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 10:01:47,434 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:47,435 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:47,441 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:47,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash 380045771, now seen corresponding path program 1 times [2018-11-18 10:01:47,448 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:47,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:47,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:47,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:47,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:47,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:01:47,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:01:47,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 10:01:47,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 10:01:47,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:01:47,568 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-18 10:01:47,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:47,582 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-11-18 10:01:47,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 10:01:47,583 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-18 10:01:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:47,588 INFO L225 Difference]: With dead ends: 35 [2018-11-18 10:01:47,588 INFO L226 Difference]: Without dead ends: 15 [2018-11-18 10:01:47,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:01:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-18 10:01:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-18 10:01:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 10:01:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-18 10:01:47,613 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-11-18 10:01:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:47,613 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-18 10:01:47,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 10:01:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-18 10:01:47,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 10:01:47,614 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:47,614 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:47,614 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:47,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:47,615 INFO L82 PathProgramCache]: Analyzing trace with hash 137515447, now seen corresponding path program 1 times [2018-11-18 10:01:47,615 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:47,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:47,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:47,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:47,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:47,900 WARN L180 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2018-11-18 10:01:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:48,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:01:48,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 10:01:48,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 10:01:48,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 10:01:48,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 10:01:48,107 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2018-11-18 10:01:48,331 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 11 [2018-11-18 10:01:48,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:48,357 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-18 10:01:48,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 10:01:48,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-18 10:01:48,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:48,358 INFO L225 Difference]: With dead ends: 23 [2018-11-18 10:01:48,358 INFO L226 Difference]: Without dead ends: 17 [2018-11-18 10:01:48,358 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-18 10:01:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-18 10:01:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 10:01:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 10:01:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-18 10:01:48,363 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-11-18 10:01:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:48,363 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-18 10:01:48,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 10:01:48,364 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-18 10:01:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 10:01:48,364 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:48,364 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:48,371 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:48,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:48,371 INFO L82 PathProgramCache]: Analyzing trace with hash -431115791, now seen corresponding path program 1 times [2018-11-18 10:01:48,371 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:48,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:48,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:48,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:48,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:48,569 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-11-18 10:01:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:48,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:48,805 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:01:48,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:48,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:48,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:01:48,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-11-18 10:01:48,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 10:01:48,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 10:01:48,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-18 10:01:48,947 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 12 states. [2018-11-18 10:01:49,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:49,031 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-18 10:01:49,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 10:01:49,031 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2018-11-18 10:01:49,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:49,032 INFO L225 Difference]: With dead ends: 25 [2018-11-18 10:01:49,032 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 10:01:49,032 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-11-18 10:01:49,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 10:01:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 10:01:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 10:01:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-18 10:01:49,035 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-11-18 10:01:49,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:49,035 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-18 10:01:49,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 10:01:49,035 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-18 10:01:49,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 10:01:49,035 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:49,035 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:49,035 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:49,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:49,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1424888917, now seen corresponding path program 2 times [2018-11-18 10:01:49,036 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:49,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:49,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:49,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:49,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:49,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:49,221 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:01:49,240 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 10:01:49,252 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 10:01:49,252 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 10:01:49,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:49,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:01:49,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-11-18 10:01:49,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 10:01:49,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 10:01:49,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-11-18 10:01:49,406 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 14 states. [2018-11-18 10:01:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:49,568 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-11-18 10:01:49,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 10:01:49,568 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2018-11-18 10:01:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:49,569 INFO L225 Difference]: With dead ends: 31 [2018-11-18 10:01:49,569 INFO L226 Difference]: Without dead ends: 23 [2018-11-18 10:01:49,569 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2018-11-18 10:01:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-18 10:01:49,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-18 10:01:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 10:01:49,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-18 10:01:49,574 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-11-18 10:01:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:49,575 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-18 10:01:49,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 10:01:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-18 10:01:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 10:01:49,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:49,576 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:49,576 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:49,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:49,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1072393119, now seen corresponding path program 3 times [2018-11-18 10:01:49,576 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:49,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:49,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:49,577 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:01:49,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 10:01:49,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:49,759 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:01:49,766 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 10:01:49,785 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-18 10:01:49,785 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 10:01:49,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:49,954 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:01:49,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2018-11-18 10:01:49,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 10:01:49,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 10:01:49,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2018-11-18 10:01:49,956 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 17 states. [2018-11-18 10:01:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:50,120 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-11-18 10:01:50,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 10:01:50,120 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 22 [2018-11-18 10:01:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:50,120 INFO L225 Difference]: With dead ends: 27 [2018-11-18 10:01:50,120 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 10:01:50,121 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2018-11-18 10:01:50,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 10:01:50,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 10:01:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 10:01:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 10:01:50,122 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-11-18 10:01:50,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:50,122 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:01:50,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 10:01:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:01:50,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 10:01:50,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 10:01:50,247 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 10:01:50,248 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:01:50,248 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:01:50,248 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 10:01:50,248 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:01:50,248 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:01:50,248 INFO L421 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 0) (<= 0 .cse0))) [2018-11-18 10:01:50,248 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2018-11-18 10:01:50,248 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 23) no Hoare annotation was computed. [2018-11-18 10:01:50,248 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 23) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0 main_~z~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-11-18 10:01:50,248 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-18 10:01:50,248 INFO L425 ceAbstractionStarter]: For program point L19-4(lines 10 28) no Hoare annotation was computed. [2018-11-18 10:01:50,248 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2018-11-18 10:01:50,248 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 28) the Hoare annotation is: true [2018-11-18 10:01:50,249 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-11-18 10:01:50,249 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-18 10:01:50,249 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 10:01:50,249 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 10:01:50,249 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 10:01:50,249 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 10:01:50,249 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 10:01:50,249 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 10:01:50,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:01:50 BoogieIcfgContainer [2018-11-18 10:01:50,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:01:50,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:01:50,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:01:50,259 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:01:50,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:01:47" (3/4) ... [2018-11-18 10:01:50,262 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 10:01:50,266 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 10:01:50,267 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 10:01:50,267 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 10:01:50,270 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-18 10:01:50,270 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-18 10:01:50,271 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 10:01:50,306 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_99116130-3671-4d34-9f8f-011dbfb4efb7/bin-2019/uautomizer/witness.graphml [2018-11-18 10:01:50,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:01:50,307 INFO L168 Benchmark]: Toolchain (without parser) took 3380.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 959.2 MB in the beginning and 896.4 MB in the end (delta: 62.9 MB). Peak memory consumption was 233.3 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:50,308 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:01:50,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.72 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:50,310 INFO L168 Benchmark]: Boogie Preprocessor took 24.53 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:50,310 INFO L168 Benchmark]: RCFGBuilder took 235.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -211.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:50,311 INFO L168 Benchmark]: TraceAbstraction took 2911.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 896.4 MB in the end (delta: 261.0 MB). Peak memory consumption was 261.0 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:50,311 INFO L168 Benchmark]: Witness Printer took 48.07 ms. Allocated memory is still 1.2 GB. Free memory is still 896.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:01:50,312 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.72 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.53 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 235.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -211.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2911.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 896.4 MB in the end (delta: 261.0 MB). Peak memory consumption was 261.0 MB. Max. memory is 11.5 GB. * Witness Printer took 48.07 ms. Allocated memory is still 1.2 GB. Free memory is still 896.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x + j <= i + y + z && i + y + z <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 2.8s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 32 SDslu, 266 SDs, 0 SdLazy, 243 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 33 HoareAnnotationTreeSize, 13 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 192 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 18547 SizeOfPredicates, 15 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 2/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...