./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_5_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_5_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/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 c7b71b458b3f08f188a62c7539b715f43fd7f97d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 08:59:13,456 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 08:59:13,458 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 08:59:13,465 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 08:59:13,465 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 08:59:13,466 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 08:59:13,467 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 08:59:13,468 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 08:59:13,469 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 08:59:13,470 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 08:59:13,470 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 08:59:13,471 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 08:59:13,471 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 08:59:13,472 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 08:59:13,473 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 08:59:13,473 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 08:59:13,474 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 08:59:13,475 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 08:59:13,477 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 08:59:13,478 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 08:59:13,478 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 08:59:13,479 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 08:59:13,481 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 08:59:13,481 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 08:59:13,481 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 08:59:13,482 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 08:59:13,483 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 08:59:13,483 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 08:59:13,484 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 08:59:13,484 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 08:59:13,485 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 08:59:13,485 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 08:59:13,485 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 08:59:13,485 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 08:59:13,486 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 08:59:13,487 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 08:59:13,487 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 08:59:13,494 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 08:59:13,495 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 08:59:13,495 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 08:59:13,495 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 08:59:13,496 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 08:59:13,496 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 08:59:13,496 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 08:59:13,496 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 08:59:13,496 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 08:59:13,497 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 08:59:13,497 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 08:59:13,497 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 08:59:13,497 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 08:59:13,497 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 08:59:13,497 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 08:59:13,497 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 08:59:13,498 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 08:59:13,498 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 08:59:13,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 08:59:13,498 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 08:59:13,498 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 08:59:13,498 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 08:59:13,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 08:59:13,499 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 08:59:13,499 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 08:59:13,499 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 08:59:13,499 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 08:59:13,499 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 08:59:13,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 08:59:13,500 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_3510c34d-0755-46d1-9d38-af34956bb94e/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 -> c7b71b458b3f08f188a62c7539b715f43fd7f97d [2018-11-10 08:59:13,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 08:59:13,530 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 08:59:13,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 08:59:13,534 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 08:59:13,534 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 08:59:13,534 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_5_true-unreach-call_true-termination.c [2018-11-10 08:59:13,570 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/data/cb36954e9/c72cb41b77d142b6910ed7c50a5b315b/FLAGfc94073f4 [2018-11-10 08:59:13,957 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 08:59:13,957 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/sv-benchmarks/c/recursive-simple/fibo_5_true-unreach-call_true-termination.c [2018-11-10 08:59:13,961 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/data/cb36954e9/c72cb41b77d142b6910ed7c50a5b315b/FLAGfc94073f4 [2018-11-10 08:59:13,973 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/data/cb36954e9/c72cb41b77d142b6910ed7c50a5b315b [2018-11-10 08:59:13,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 08:59:13,976 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 08:59:13,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 08:59:13,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 08:59:13,980 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 08:59:13,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:59:13" (1/1) ... [2018-11-10 08:59:13,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31137421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:59:13, skipping insertion in model container [2018-11-10 08:59:13,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:59:13" (1/1) ... [2018-11-10 08:59:13,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 08:59:13,998 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 08:59:14,085 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:59:14,087 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 08:59:14,096 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:59:14,104 INFO L193 MainTranslator]: Completed translation [2018-11-10 08:59:14,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:59:14 WrapperNode [2018-11-10 08:59:14,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 08:59:14,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 08:59:14,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 08:59:14,105 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 08:59:14,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:59:14" (1/1) ... [2018-11-10 08:59:14,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:59:14" (1/1) ... [2018-11-10 08:59:14,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:59:14" (1/1) ... [2018-11-10 08:59:14,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:59:14" (1/1) ... [2018-11-10 08:59:14,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:59:14" (1/1) ... [2018-11-10 08:59:14,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:59:14" (1/1) ... [2018-11-10 08:59:14,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:59:14" (1/1) ... [2018-11-10 08:59:14,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 08:59:14,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 08:59:14,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 08:59:14,122 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 08:59:14,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:59:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 08:59:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 08:59:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 08:59:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2018-11-10 08:59:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 08:59:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 08:59:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 08:59:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2018-11-10 08:59:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 08:59:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 08:59:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 08:59:14,314 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 08:59:14,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:59:14 BoogieIcfgContainer [2018-11-10 08:59:14,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 08:59:14,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 08:59:14,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 08:59:14,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 08:59:14,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 08:59:13" (1/3) ... [2018-11-10 08:59:14,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf933cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:59:14, skipping insertion in model container [2018-11-10 08:59:14,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:59:14" (2/3) ... [2018-11-10 08:59:14,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf933cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:59:14, skipping insertion in model container [2018-11-10 08:59:14,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:59:14" (3/3) ... [2018-11-10 08:59:14,319 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_5_true-unreach-call_true-termination.c [2018-11-10 08:59:14,325 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 08:59:14,331 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 08:59:14,343 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 08:59:14,363 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 08:59:14,364 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 08:59:14,364 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 08:59:14,364 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 08:59:14,364 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 08:59:14,364 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 08:59:14,364 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 08:59:14,364 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 08:59:14,364 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 08:59:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-10 08:59:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 08:59:14,385 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:59:14,386 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:59:14,388 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:59:14,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:59:14,392 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2018-11-10 08:59:14,394 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:59:14,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:59:14,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:14,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:59:14,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:59:14,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:59:14,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 08:59:14,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 08:59:14,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 08:59:14,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:59:14,556 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2018-11-10 08:59:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:59:14,639 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-11-10 08:59:14,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 08:59:14,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-10 08:59:14,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:59:14,647 INFO L225 Difference]: With dead ends: 35 [2018-11-10 08:59:14,647 INFO L226 Difference]: Without dead ends: 21 [2018-11-10 08:59:14,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 08:59:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-10 08:59:14,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-10 08:59:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-10 08:59:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-11-10 08:59:14,678 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2018-11-10 08:59:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:59:14,678 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-11-10 08:59:14,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 08:59:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2018-11-10 08:59:14,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 08:59:14,680 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:59:14,680 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:59:14,680 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:59:14,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:59:14,681 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2018-11-10 08:59:14,681 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:59:14,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:59:14,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:14,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:59:14,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:59:14,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:59:14,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 08:59:14,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 08:59:14,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 08:59:14,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 08:59:14,719 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2018-11-10 08:59:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:59:14,795 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-11-10 08:59:14,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 08:59:14,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-10 08:59:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:59:14,797 INFO L225 Difference]: With dead ends: 27 [2018-11-10 08:59:14,797 INFO L226 Difference]: Without dead ends: 23 [2018-11-10 08:59:14,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 08:59:14,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-10 08:59:14,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-11-10 08:59:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-10 08:59:14,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-11-10 08:59:14,802 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2018-11-10 08:59:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:59:14,803 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-11-10 08:59:14,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 08:59:14,803 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2018-11-10 08:59:14,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 08:59:14,804 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:59:14,804 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:59:14,804 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:59:14,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:59:14,804 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2018-11-10 08:59:14,804 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:59:14,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:59:14,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:14,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:59:14,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-10 08:59:14,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:59:14,879 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:59:14,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:59:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:14,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:59:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-10 08:59:14,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:59:14,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-11-10 08:59:14,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 08:59:14,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 08:59:14,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-10 08:59:14,977 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 8 states. [2018-11-10 08:59:15,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:59:15,076 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2018-11-10 08:59:15,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 08:59:15,077 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-11-10 08:59:15,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:59:15,077 INFO L225 Difference]: With dead ends: 38 [2018-11-10 08:59:15,077 INFO L226 Difference]: Without dead ends: 23 [2018-11-10 08:59:15,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-11-10 08:59:15,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-10 08:59:15,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-10 08:59:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 08:59:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-11-10 08:59:15,083 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2018-11-10 08:59:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:59:15,084 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-10 08:59:15,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 08:59:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-10 08:59:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 08:59:15,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:59:15,085 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:59:15,086 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:59:15,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:59:15,086 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2018-11-10 08:59:15,086 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:59:15,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:59:15,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:15,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:59:15,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 08:59:15,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:59:15,135 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:59:15,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:59:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:15,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:59:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 08:59:15,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:59:15,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-10 08:59:15,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 08:59:15,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 08:59:15,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-10 08:59:15,181 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2018-11-10 08:59:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:59:15,223 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2018-11-10 08:59:15,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 08:59:15,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-11-10 08:59:15,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:59:15,224 INFO L225 Difference]: With dead ends: 32 [2018-11-10 08:59:15,225 INFO L226 Difference]: Without dead ends: 28 [2018-11-10 08:59:15,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-10 08:59:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-10 08:59:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-10 08:59:15,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-10 08:59:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2018-11-10 08:59:15,230 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 27 [2018-11-10 08:59:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:59:15,231 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2018-11-10 08:59:15,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 08:59:15,231 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2018-11-10 08:59:15,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-10 08:59:15,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:59:15,232 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:59:15,232 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:59:15,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:59:15,232 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2018-11-10 08:59:15,232 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:59:15,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:59:15,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:15,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:59:15,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-10 08:59:15,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:59:15,283 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:59:15,296 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 08:59:15,318 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 08:59:15,318 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 08:59:15,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:59:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-10 08:59:15,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:59:15,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2018-11-10 08:59:15,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 08:59:15,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 08:59:15,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-10 08:59:15,380 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 8 states. [2018-11-10 08:59:15,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:59:15,464 INFO L93 Difference]: Finished difference Result 40 states and 60 transitions. [2018-11-10 08:59:15,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 08:59:15,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2018-11-10 08:59:15,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:59:15,466 INFO L225 Difference]: With dead ends: 40 [2018-11-10 08:59:15,466 INFO L226 Difference]: Without dead ends: 36 [2018-11-10 08:59:15,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-10 08:59:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-10 08:59:15,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-10 08:59:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-10 08:59:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2018-11-10 08:59:15,474 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 40 [2018-11-10 08:59:15,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:59:15,475 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2018-11-10 08:59:15,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 08:59:15,475 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2018-11-10 08:59:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-10 08:59:15,477 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:59:15,477 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:59:15,478 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:59:15,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:59:15,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1474757101, now seen corresponding path program 3 times [2018-11-10 08:59:15,478 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:59:15,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:59:15,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:15,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 08:59:15,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 176 proven. 28 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-11-10 08:59:15,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:59:15,684 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:59:15,690 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 08:59:15,719 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-11-10 08:59:15,719 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 08:59:15,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:59:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2018-11-10 08:59:15,764 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:59:15,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 12 [2018-11-10 08:59:15,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 08:59:15,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 08:59:15,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-10 08:59:15,765 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand 12 states. [2018-11-10 08:59:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:59:15,961 INFO L93 Difference]: Finished difference Result 76 states and 143 transitions. [2018-11-10 08:59:15,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 08:59:15,961 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2018-11-10 08:59:15,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:59:15,963 INFO L225 Difference]: With dead ends: 76 [2018-11-10 08:59:15,963 INFO L226 Difference]: Without dead ends: 49 [2018-11-10 08:59:15,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2018-11-10 08:59:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-10 08:59:15,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2018-11-10 08:59:15,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-10 08:59:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions. [2018-11-10 08:59:15,973 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 63 transitions. Word has length 96 [2018-11-10 08:59:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:59:15,974 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 63 transitions. [2018-11-10 08:59:15,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 08:59:15,974 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 63 transitions. [2018-11-10 08:59:15,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-10 08:59:15,976 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:59:15,976 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:59:15,977 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:59:15,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:59:15,977 INFO L82 PathProgramCache]: Analyzing trace with hash 2001184551, now seen corresponding path program 4 times [2018-11-10 08:59:15,977 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:59:15,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:59:15,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:15,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 08:59:15,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-10 08:59:16,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:59:16,040 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:59:16,050 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 08:59:16,060 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 08:59:16,060 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 08:59:16,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:59:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-10 08:59:16,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:59:16,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2018-11-10 08:59:16,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 08:59:16,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 08:59:16,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-10 08:59:16,113 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand 8 states. [2018-11-10 08:59:16,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:59:16,192 INFO L93 Difference]: Finished difference Result 52 states and 81 transitions. [2018-11-10 08:59:16,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 08:59:16,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2018-11-10 08:59:16,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:59:16,194 INFO L225 Difference]: With dead ends: 52 [2018-11-10 08:59:16,194 INFO L226 Difference]: Without dead ends: 48 [2018-11-10 08:59:16,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-10 08:59:16,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-10 08:59:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-10 08:59:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-10 08:59:16,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 77 transitions. [2018-11-10 08:59:16,203 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 77 transitions. Word has length 68 [2018-11-10 08:59:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:59:16,204 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 77 transitions. [2018-11-10 08:59:16,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 08:59:16,204 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 77 transitions. [2018-11-10 08:59:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-10 08:59:16,206 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:59:16,206 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 19, 11, 11, 11, 11, 11, 11, 11, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:59:16,206 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:59:16,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:59:16,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1548772748, now seen corresponding path program 5 times [2018-11-10 08:59:16,207 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:59:16,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:59:16,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:16,208 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 08:59:16,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 294 proven. 145 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2018-11-10 08:59:16,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:59:16,377 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:59:16,386 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 08:59:16,425 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-11-10 08:59:16,425 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 08:59:16,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:59:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 822 proven. 67 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2018-11-10 08:59:16,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:59:16,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2018-11-10 08:59:16,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 08:59:16,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 08:59:16,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-11-10 08:59:16,529 INFO L87 Difference]: Start difference. First operand 48 states and 77 transitions. Second operand 16 states. [2018-11-10 08:59:16,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:59:16,970 INFO L93 Difference]: Finished difference Result 131 states and 277 transitions. [2018-11-10 08:59:16,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-10 08:59:16,971 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 164 [2018-11-10 08:59:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:59:16,972 INFO L225 Difference]: With dead ends: 131 [2018-11-10 08:59:16,972 INFO L226 Difference]: Without dead ends: 66 [2018-11-10 08:59:16,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=752, Unknown=0, NotChecked=0, Total=992 [2018-11-10 08:59:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-10 08:59:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2018-11-10 08:59:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-10 08:59:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2018-11-10 08:59:16,985 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 164 [2018-11-10 08:59:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:59:16,987 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2018-11-10 08:59:16,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 08:59:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2018-11-10 08:59:16,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-10 08:59:16,988 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:59:16,988 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:59:16,989 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:59:16,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:59:16,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1200034344, now seen corresponding path program 6 times [2018-11-10 08:59:16,989 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:59:16,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:59:16,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:16,990 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 08:59:16,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-11-10 08:59:17,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:59:17,196 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:59:17,202 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 08:59:17,230 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-10 08:59:17,230 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 08:59:17,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:59:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-11-10 08:59:17,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:59:17,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 20 [2018-11-10 08:59:17,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-10 08:59:17,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-10 08:59:17,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2018-11-10 08:59:17,472 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand 20 states. [2018-11-10 08:59:17,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:59:17,588 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2018-11-10 08:59:17,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 08:59:17,589 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 109 [2018-11-10 08:59:17,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:59:17,590 INFO L225 Difference]: With dead ends: 85 [2018-11-10 08:59:17,590 INFO L226 Difference]: Without dead ends: 81 [2018-11-10 08:59:17,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2018-11-10 08:59:17,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-10 08:59:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2018-11-10 08:59:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-10 08:59:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2018-11-10 08:59:17,599 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 109 [2018-11-10 08:59:17,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:59:17,600 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2018-11-10 08:59:17,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-10 08:59:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2018-11-10 08:59:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-10 08:59:17,601 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:59:17,603 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 15, 8, 8, 8, 8, 8, 8, 8, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:59:17,603 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:59:17,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:59:17,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1929709105, now seen corresponding path program 7 times [2018-11-10 08:59:17,604 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:59:17,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:59:17,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:17,605 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 08:59:17,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:59:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 97 proven. 239 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2018-11-10 08:59:17,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:59:17,696 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:59:17,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:59:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:59:17,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:59:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 97 proven. 239 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2018-11-10 08:59:17,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 08:59:17,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-10 08:59:17,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 08:59:17,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 08:59:17,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-10 08:59:17,788 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 9 states. [2018-11-10 08:59:17,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:59:17,874 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2018-11-10 08:59:17,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 08:59:17,875 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2018-11-10 08:59:17,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:59:17,875 INFO L225 Difference]: With dead ends: 69 [2018-11-10 08:59:17,876 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 08:59:17,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-10 08:59:17,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 08:59:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 08:59:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 08:59:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 08:59:17,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 124 [2018-11-10 08:59:17,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:59:17,877 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:59:17,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 08:59:17,878 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 08:59:17,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 08:59:17,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 08:59:18,232 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2018-11-10 08:59:18,270 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 08:59:18,270 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:59:18,270 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:59:18,270 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 08:59:18,270 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 08:59:18,270 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 08:59:18,270 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 23 30) the Hoare annotation is: true [2018-11-10 08:59:18,270 INFO L425 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-11-10 08:59:18,270 INFO L425 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L421 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (and (<= 5 main_~x~0) (<= main_~x~0 5)) [2018-11-10 08:59:18,271 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 23 30) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L425 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L425 ceAbstractionStarter]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 23 30) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L425 ceAbstractionStarter]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L425 ceAbstractionStarter]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L421 ceAbstractionStarter]: At program point L11(line 11) the Hoare annotation is: (and (<= fibo_~n |fibo_#in~n|) (<= |fibo_#in~n| fibo_~n) (< 1 fibo_~n)) [2018-11-10 08:59:18,271 INFO L425 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L421 ceAbstractionStarter]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse2 (<= 3 |fibo_#in~n|)) (.cse4 (<= |fibo_#in~n| 2)) (.cse5 (<= |fibo_#t~ret0| 1)) (.cse6 (<= 1 |fibo_#t~ret0|))) (let ((.cse0 (and .cse4 .cse5 .cse6)) (.cse1 (and .cse2 .cse5 (<= |fibo_#in~n| 3) .cse6))) (and (or .cse0 (<= 4 |fibo_#in~n|) .cse1) (or (and (<= 3 |fibo_#t~ret0|) (<= |fibo_#t~ret0| 3)) (<= 6 |fibo_#in~n|) (<= |fibo_#in~n| 4)) (or .cse0 .cse1 (and (<= 2 |fibo_#t~ret0|) (<= |fibo_#t~ret0| 2)) (<= 5 |fibo_#in~n|)) (let ((.cse3 (<= fibo_~n |fibo_#in~n|))) (or (and .cse2 .cse3 (<= |fibo_#in~n| fibo_~n)) (and .cse4 .cse3 (< 1 fibo_~n))))))) [2018-11-10 08:59:18,271 INFO L425 ceAbstractionStarter]: For program point L8(lines 8 12) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L425 ceAbstractionStarter]: For program point L11-3(line 11) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L425 ceAbstractionStarter]: For program point L6(lines 6 12) no Hoare annotation was computed. [2018-11-10 08:59:18,271 INFO L428 ceAbstractionStarter]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2018-11-10 08:59:18,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 08:59:18 BoogieIcfgContainer [2018-11-10 08:59:18,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 08:59:18,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 08:59:18,274 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 08:59:18,274 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 08:59:18,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:59:14" (3/4) ... [2018-11-10 08:59:18,277 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 08:59:18,282 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 08:59:18,282 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 08:59:18,283 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2018-11-10 08:59:18,286 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-10 08:59:18,286 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 08:59:18,286 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 08:59:18,315 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3510c34d-0755-46d1-9d38-af34956bb94e/bin-2019/uautomizer/witness.graphml [2018-11-10 08:59:18,315 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 08:59:18,316 INFO L168 Benchmark]: Toolchain (without parser) took 4340.52 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 313.5 MB). Free memory was 960.2 MB in the beginning and 1.3 GB in the end (delta: -305.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2018-11-10 08:59:18,316 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:59:18,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.04 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 08:59:18,317 INFO L168 Benchmark]: Boogie Preprocessor took 16.64 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:59:18,317 INFO L168 Benchmark]: RCFGBuilder took 192.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 949.4 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-10 08:59:18,317 INFO L168 Benchmark]: TraceAbstraction took 3958.49 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 171.4 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -147.3 MB). Peak memory consumption was 405.9 MB. Max. memory is 11.5 GB. [2018-11-10 08:59:18,318 INFO L168 Benchmark]: Witness Printer took 42.05 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2018-11-10 08:59:18,320 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 128.04 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.64 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 192.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 949.4 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3958.49 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 171.4 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -147.3 MB). Peak memory consumption was 405.9 MB. Max. memory is 11.5 GB. * Witness Printer took 42.05 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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 4 procedures, 24 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 10 OverallIterations, 23 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 217 SDtfs, 195 SDslu, 901 SDs, 0 SdLazy, 947 SolverSat, 255 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 804 GetRequests, 673 SyntacticMatches, 10 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=9, 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, 10 MinimizatonAttempts, 29 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 80 PreInvPairs, 182 NumberOfFragments, 119 HoareAnnotationTreeSize, 80 FomulaSimplifications, 1789 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 739 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1335 NumberOfCodeBlocks, 1227 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1317 ConstructedInterpolants, 0 QuantifiedInterpolants, 278889 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1213 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 5576/6844 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...