java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4_true-unreach-call.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b6335f6 [2018-10-23 09:43:15,562 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 09:43:15,564 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 09:43:15,576 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 09:43:15,576 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 09:43:15,577 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 09:43:15,579 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 09:43:15,581 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 09:43:15,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 09:43:15,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 09:43:15,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 09:43:15,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 09:43:15,586 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 09:43:15,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 09:43:15,588 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 09:43:15,589 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 09:43:15,590 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 09:43:15,592 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 09:43:15,594 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 09:43:15,596 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 09:43:15,597 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 09:43:15,598 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 09:43:15,601 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 09:43:15,601 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 09:43:15,602 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 09:43:15,603 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 09:43:15,604 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 09:43:15,604 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 09:43:15,605 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 09:43:15,607 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 09:43:15,607 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 09:43:15,608 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 09:43:15,608 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 09:43:15,608 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 09:43:15,609 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 09:43:15,610 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 09:43:15,610 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 09:43:15,634 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 09:43:15,635 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 09:43:15,635 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 09:43:15,636 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 09:43:15,636 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 09:43:15,636 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 09:43:15,638 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 09:43:15,638 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 09:43:15,638 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 09:43:15,639 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 09:43:15,639 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 09:43:15,639 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 09:43:15,639 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 09:43:15,639 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 09:43:15,640 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 09:43:15,640 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 09:43:15,641 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 09:43:15,641 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 09:43:15,641 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 09:43:15,641 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 09:43:15,641 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 09:43:15,642 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 09:43:15,643 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 09:43:15,643 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 09:43:15,643 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 09:43:15,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 09:43:15,643 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 09:43:15,644 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 09:43:15,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 09:43:15,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 09:43:15,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 09:43:15,717 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 09:43:15,717 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 09:43:15,718 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4_true-unreach-call.c.v+lhb-reducer.c [2018-10-23 09:43:15,782 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/286043faf/2b57f6f0ec5e4ce9b3270154ba6b3e10/FLAG7842760d9 [2018-10-23 09:43:16,326 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 09:43:16,327 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4_true-unreach-call.c.v+lhb-reducer.c [2018-10-23 09:43:16,338 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/286043faf/2b57f6f0ec5e4ce9b3270154ba6b3e10/FLAG7842760d9 [2018-10-23 09:43:16,353 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/286043faf/2b57f6f0ec5e4ce9b3270154ba6b3e10 [2018-10-23 09:43:16,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 09:43:16,365 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 09:43:16,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 09:43:16,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 09:43:16,373 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 09:43:16,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:43:16" (1/1) ... [2018-10-23 09:43:16,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27dd508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16, skipping insertion in model container [2018-10-23 09:43:16,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:43:16" (1/1) ... [2018-10-23 09:43:16,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 09:43:16,433 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 09:43:16,797 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:43:16,813 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 09:43:16,942 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:43:16,961 INFO L193 MainTranslator]: Completed translation [2018-10-23 09:43:16,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16 WrapperNode [2018-10-23 09:43:16,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 09:43:16,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 09:43:16,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 09:43:16,963 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 09:43:16,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16" (1/1) ... [2018-10-23 09:43:17,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16" (1/1) ... [2018-10-23 09:43:17,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 09:43:17,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 09:43:17,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 09:43:17,171 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 09:43:17,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16" (1/1) ... [2018-10-23 09:43:17,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16" (1/1) ... [2018-10-23 09:43:17,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16" (1/1) ... [2018-10-23 09:43:17,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16" (1/1) ... [2018-10-23 09:43:17,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16" (1/1) ... [2018-10-23 09:43:17,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16" (1/1) ... [2018-10-23 09:43:17,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16" (1/1) ... [2018-10-23 09:43:17,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 09:43:17,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 09:43:17,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 09:43:17,283 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 09:43:17,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-23 09:43:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-10-23 09:43:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-23 09:43:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-23 09:43:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 09:43:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 09:43:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-23 09:43:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-23 09:43:20,184 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 09:43:20,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:43:20 BoogieIcfgContainer [2018-10-23 09:43:20,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 09:43:20,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 09:43:20,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 09:43:20,191 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 09:43:20,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:43:16" (1/3) ... [2018-10-23 09:43:20,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d279df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:43:20, skipping insertion in model container [2018-10-23 09:43:20,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:43:16" (2/3) ... [2018-10-23 09:43:20,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d279df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:43:20, skipping insertion in model container [2018-10-23 09:43:20,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:43:20" (3/3) ... [2018-10-23 09:43:20,195 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4_true-unreach-call.c.v+lhb-reducer.c [2018-10-23 09:43:20,205 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 09:43:20,214 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 09:43:20,232 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 09:43:20,272 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 09:43:20,272 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 09:43:20,273 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 09:43:20,273 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 09:43:20,273 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 09:43:20,273 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 09:43:20,274 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 09:43:20,274 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 09:43:20,274 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 09:43:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states. [2018-10-23 09:43:20,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-10-23 09:43:20,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:20,329 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:20,332 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:20,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:20,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1287496581, now seen corresponding path program 1 times [2018-10-23 09:43:20,340 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:20,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:20,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:20,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:43:20,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:43:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:22,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:43:22,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2018-10-23 09:43:22,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-23 09:43:22,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-23 09:43:22,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2018-10-23 09:43:22,327 INFO L87 Difference]: Start difference. First operand 453 states. Second operand 18 states. [2018-10-23 09:43:24,734 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-23 09:43:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:43:25,303 INFO L93 Difference]: Finished difference Result 511 states and 545 transitions. [2018-10-23 09:43:25,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 09:43:25,306 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 280 [2018-10-23 09:43:25,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:43:25,324 INFO L225 Difference]: With dead ends: 511 [2018-10-23 09:43:25,324 INFO L226 Difference]: Without dead ends: 291 [2018-10-23 09:43:25,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2018-10-23 09:43:25,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-23 09:43:25,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2018-10-23 09:43:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-10-23 09:43:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-10-23 09:43:25,384 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 280 [2018-10-23 09:43:25,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:43:25,386 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-10-23 09:43:25,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-23 09:43:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-10-23 09:43:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-23 09:43:25,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:25,393 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:25,393 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:25,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:25,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1230532042, now seen corresponding path program 1 times [2018-10-23 09:43:25,394 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:25,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:25,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:25,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:43:25,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:43:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:26,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:43:26,267 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-23 09:43:26,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:43:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:43:27,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:43:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:27,266 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:43:27,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 19 [2018-10-23 09:43:27,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-23 09:43:27,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-23 09:43:27,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2018-10-23 09:43:27,269 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 19 states. [2018-10-23 09:43:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:43:28,764 INFO L93 Difference]: Finished difference Result 300 states and 300 transitions. [2018-10-23 09:43:28,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 09:43:28,765 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 286 [2018-10-23 09:43:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:43:28,771 INFO L225 Difference]: With dead ends: 300 [2018-10-23 09:43:28,772 INFO L226 Difference]: Without dead ends: 297 [2018-10-23 09:43:28,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 285 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2018-10-23 09:43:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-10-23 09:43:28,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 293. [2018-10-23 09:43:28,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-10-23 09:43:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-10-23 09:43:28,791 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 286 [2018-10-23 09:43:28,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:43:28,792 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-10-23 09:43:28,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-23 09:43:28,793 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-10-23 09:43:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-10-23 09:43:28,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:28,798 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:28,799 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:28,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:28,799 INFO L82 PathProgramCache]: Analyzing trace with hash -334104537, now seen corresponding path program 2 times [2018-10-23 09:43:28,799 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:28,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:28,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:28,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:43:28,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:43:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:29,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:43:29,511 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-23 09:43:29,521 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:43:41,936 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:43:41,937 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:43:41,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:43:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:42,118 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:43:42,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 20 [2018-10-23 09:43:42,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-23 09:43:42,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-23 09:43:42,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2018-10-23 09:43:42,121 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 20 states. [2018-10-23 09:43:43,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:43:43,210 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2018-10-23 09:43:43,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 09:43:43,210 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 292 [2018-10-23 09:43:43,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:43:43,213 INFO L225 Difference]: With dead ends: 306 [2018-10-23 09:43:43,213 INFO L226 Difference]: Without dead ends: 303 [2018-10-23 09:43:43,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 291 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2018-10-23 09:43:43,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-23 09:43:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-10-23 09:43:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-23 09:43:43,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-10-23 09:43:43,227 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 292 [2018-10-23 09:43:43,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:43:43,228 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-10-23 09:43:43,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-23 09:43:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-10-23 09:43:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-23 09:43:43,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:43:43,234 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:43:43,234 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:43:43,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:43:43,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2032297304, now seen corresponding path program 3 times [2018-10-23 09:43:43,235 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:43:43,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:43:43,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:43,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:43:43,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:43:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:43:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:43:44,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:43:44,854 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-23 09:43:44,862 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:44:21,277 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-23 09:44:21,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:44:21,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:44:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:44:21,478 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:44:21,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16] total 21 [2018-10-23 09:44:21,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-23 09:44:21,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-23 09:44:21,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2018-10-23 09:44:21,480 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 21 states. [2018-10-23 09:44:22,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:44:22,614 INFO L93 Difference]: Finished difference Result 312 states and 312 transitions. [2018-10-23 09:44:22,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-23 09:44:22,615 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 298 [2018-10-23 09:44:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:44:22,618 INFO L225 Difference]: With dead ends: 312 [2018-10-23 09:44:22,619 INFO L226 Difference]: Without dead ends: 309 [2018-10-23 09:44:22,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 297 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2018-10-23 09:44:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-10-23 09:44:22,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2018-10-23 09:44:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-10-23 09:44:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-10-23 09:44:22,629 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 298 [2018-10-23 09:44:22,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:44:22,630 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-10-23 09:44:22,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-23 09:44:22,630 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-10-23 09:44:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-23 09:44:22,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:44:22,632 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:44:22,632 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:44:22,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:44:22,633 INFO L82 PathProgramCache]: Analyzing trace with hash 880437705, now seen corresponding path program 4 times [2018-10-23 09:44:22,633 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:44:22,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:44:22,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:22,634 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:44:22,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:44:23,153 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-10-23 09:44:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:44:23,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:44:23,490 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-23 09:44:23,505 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:44:26,040 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:44:26,040 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:44:26,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:44:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:44:26,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:44:26,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 22 [2018-10-23 09:44:26,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-23 09:44:26,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-23 09:44:26,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2018-10-23 09:44:26,287 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 22 states. [2018-10-23 09:44:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:44:27,512 INFO L93 Difference]: Finished difference Result 318 states and 318 transitions. [2018-10-23 09:44:27,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-23 09:44:27,513 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 304 [2018-10-23 09:44:27,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:44:27,516 INFO L225 Difference]: With dead ends: 318 [2018-10-23 09:44:27,516 INFO L226 Difference]: Without dead ends: 315 [2018-10-23 09:44:27,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 303 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2018-10-23 09:44:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-23 09:44:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2018-10-23 09:44:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-10-23 09:44:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-10-23 09:44:27,525 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 304 [2018-10-23 09:44:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:44:27,526 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-10-23 09:44:27,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-23 09:44:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-10-23 09:44:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-23 09:44:27,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:44:27,529 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:44:27,529 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:44:27,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:44:27,529 INFO L82 PathProgramCache]: Analyzing trace with hash 6264186, now seen corresponding path program 5 times [2018-10-23 09:44:27,529 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:44:27,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:44:27,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:27,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:44:27,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:44:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:44:28,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:44:28,663 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-23 09:44:28,673 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:44:30,656 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-23 09:44:30,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:44:30,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:44:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:44:30,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:44:30,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18] total 23 [2018-10-23 09:44:30,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-23 09:44:30,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-23 09:44:30,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2018-10-23 09:44:30,817 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 23 states. [2018-10-23 09:44:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:44:32,642 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2018-10-23 09:44:32,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-23 09:44:32,643 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 310 [2018-10-23 09:44:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:44:32,646 INFO L225 Difference]: With dead ends: 324 [2018-10-23 09:44:32,646 INFO L226 Difference]: Without dead ends: 321 [2018-10-23 09:44:32,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=1088, Unknown=0, NotChecked=0, Total=1190 [2018-10-23 09:44:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-10-23 09:44:32,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2018-10-23 09:44:32,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-23 09:44:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-23 09:44:32,654 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 310 [2018-10-23 09:44:32,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:44:32,655 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-23 09:44:32,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-23 09:44:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-23 09:44:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-23 09:44:32,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:44:32,657 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:44:32,657 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:44:32,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:44:32,658 INFO L82 PathProgramCache]: Analyzing trace with hash -878217109, now seen corresponding path program 6 times [2018-10-23 09:44:32,658 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:44:32,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:44:32,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:32,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:44:32,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:44:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:44:33,155 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-10-23 09:44:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:44:33,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:44:33,917 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-23 09:44:33,925 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-23 09:45:46,378 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-23 09:45:46,379 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:45:46,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:45:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:45:46,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:45:46,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19] total 24 [2018-10-23 09:45:46,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-23 09:45:46,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-23 09:45:46,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2018-10-23 09:45:46,701 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 24 states. [2018-10-23 09:45:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:45:48,100 INFO L93 Difference]: Finished difference Result 330 states and 330 transitions. [2018-10-23 09:45:48,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 09:45:48,102 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 316 [2018-10-23 09:45:48,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:45:48,105 INFO L225 Difference]: With dead ends: 330 [2018-10-23 09:45:48,105 INFO L226 Difference]: Without dead ends: 327 [2018-10-23 09:45:48,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 315 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2018-10-23 09:45:48,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-23 09:45:48,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 323. [2018-10-23 09:45:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-10-23 09:45:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-10-23 09:45:48,113 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 316 [2018-10-23 09:45:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:45:48,114 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-10-23 09:45:48,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-23 09:45:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-10-23 09:45:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-23 09:45:48,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:45:48,116 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:45:48,116 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:45:48,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:45:48,116 INFO L82 PathProgramCache]: Analyzing trace with hash -759455076, now seen corresponding path program 7 times [2018-10-23 09:45:48,116 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:45:48,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:45:48,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:45:48,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:45:48,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:45:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:45:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:45:49,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:45:49,776 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-23 09:45:49,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:45:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:45:51,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:45:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:45:51,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:45:51,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20] total 25 [2018-10-23 09:45:51,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-23 09:45:51,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-23 09:45:51,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2018-10-23 09:45:51,592 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 25 states. [2018-10-23 09:45:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:45:53,203 INFO L93 Difference]: Finished difference Result 336 states and 336 transitions. [2018-10-23 09:45:53,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-23 09:45:53,203 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 322 [2018-10-23 09:45:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:45:53,207 INFO L225 Difference]: With dead ends: 336 [2018-10-23 09:45:53,207 INFO L226 Difference]: Without dead ends: 333 [2018-10-23 09:45:53,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 321 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=1368, Unknown=0, NotChecked=0, Total=1482 [2018-10-23 09:45:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-23 09:45:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2018-10-23 09:45:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-10-23 09:45:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-10-23 09:45:53,215 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 322 [2018-10-23 09:45:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:45:53,215 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-10-23 09:45:53,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-23 09:45:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-10-23 09:45:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-23 09:45:53,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:45:53,218 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:45:53,218 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:45:53,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:45:53,218 INFO L82 PathProgramCache]: Analyzing trace with hash 546939917, now seen corresponding path program 8 times [2018-10-23 09:45:53,219 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:45:53,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:45:53,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:45:53,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:45:53,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:45:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:45:54,091 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-10-23 09:45:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:45:55,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:45:55,657 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-23 09:45:55,664 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:46:08,742 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:46:08,742 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:46:08,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:46:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:46:09,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:46:09,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21] total 26 [2018-10-23 09:46:09,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-23 09:46:09,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-23 09:46:09,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2018-10-23 09:46:09,090 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 26 states. [2018-10-23 09:46:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:46:11,274 INFO L93 Difference]: Finished difference Result 342 states and 342 transitions. [2018-10-23 09:46:11,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-23 09:46:11,276 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 328 [2018-10-23 09:46:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:46:11,278 INFO L225 Difference]: With dead ends: 342 [2018-10-23 09:46:11,279 INFO L226 Difference]: Without dead ends: 339 [2018-10-23 09:46:11,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=120, Invalid=1520, Unknown=0, NotChecked=0, Total=1640 [2018-10-23 09:46:11,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-23 09:46:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2018-10-23 09:46:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-23 09:46:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-10-23 09:46:11,292 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 328 [2018-10-23 09:46:11,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:46:11,293 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-10-23 09:46:11,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-23 09:46:11,293 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-10-23 09:46:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-23 09:46:11,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:46:11,296 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:46:11,296 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:46:11,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:46:11,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1339231422, now seen corresponding path program 9 times [2018-10-23 09:46:11,297 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:46:11,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:46:11,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:46:11,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:46:11,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:46:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:46:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:46:13,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:46:13,551 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 09:46:13,593 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:47:33,323 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-10-23 09:47:33,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:47:33,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:47:33,424 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-10-23 09:47:33,436 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-23 09:47:33,437 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-23 09:47:33,463 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:47:33,485 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:47:33,485 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2018-10-23 09:47:33,719 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-10-23 09:47:33,724 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:33,725 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-10-23 09:47:33,726 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-23 09:47:33,730 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:47:33,734 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:47:33,734 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2018-10-23 09:47:33,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2018-10-23 09:47:33,830 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:33,834 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:33,836 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:33,837 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 52 [2018-10-23 09:47:33,837 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-23 09:47:33,880 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:47:33,887 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:47:33,888 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2018-10-23 09:47:34,995 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2018-10-23 09:47:35,000 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:35,001 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:35,001 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:35,002 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:35,003 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:35,006 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:35,007 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:35,009 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:35,011 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:35,014 INFO L700 Elim1Store]: detected not equals via solver [2018-10-23 09:47:35,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 191 [2018-10-23 09:47:35,030 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-23 09:47:35,085 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-23 09:47:35,096 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-23 09:47:35,096 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:85, output treesize:41 [2018-10-23 09:47:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 95 proven. 52 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-23 09:47:35,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:47:35,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 18] total 43 [2018-10-23 09:47:35,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-23 09:47:35,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-23 09:47:35,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2018-10-23 09:47:35,681 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 43 states. [2018-10-23 09:47:41,335 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2018-10-23 09:47:41,665 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-23 09:47:41,954 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2018-10-23 09:47:42,839 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2018-10-23 09:47:43,130 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2018-10-23 09:47:43,654 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2018-10-23 09:47:43,990 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-10-23 09:47:44,307 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 Received shutdown request... [2018-10-23 09:47:44,784 WARN L187 SmtUtils]: Removed 7 from assertion stack [2018-10-23 09:47:44,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-23 09:47:44,785 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 09:47:44,789 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 09:47:44,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:47:44 BoogieIcfgContainer [2018-10-23 09:47:44,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 09:47:44,790 INFO L168 Benchmark]: Toolchain (without parser) took 268426.04 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 949.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -707.4 MB). Peak memory consumption was 242.1 MB. Max. memory is 7.1 GB. [2018-10-23 09:47:44,793 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 09:47:44,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-23 09:47:44,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 207.33 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -795.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2018-10-23 09:47:44,795 INFO L168 Benchmark]: Boogie Preprocessor took 111.61 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 09:47:44,796 INFO L168 Benchmark]: RCFGBuilder took 2902.89 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 146.2 MB). Peak memory consumption was 146.2 MB. Max. memory is 7.1 GB. [2018-10-23 09:47:44,797 INFO L168 Benchmark]: TraceAbstraction took 264602.62 ms. Allocated memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: 223.3 MB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -79.8 MB). Peak memory consumption was 143.6 MB. Max. memory is 7.1 GB. [2018-10-23 09:47:44,801 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 596.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 207.33 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -795.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.61 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 2902.89 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 146.2 MB). Peak memory consumption was 146.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 264602.62 ms. Allocated memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: 223.3 MB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -79.8 MB). Peak memory consumption was 143.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 465]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 465). Cancelled while BasicCegarLoop was constructing difference of abstraction (335states) and FLOYD_HOARE automaton (currently 36 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 65. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 453 locations, 1 error locations. TIMEOUT Result, 264.5s OverallTime, 10 OverallIterations, 10 TraceHistogramMax, 24.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2590 SDtfs, 3269 SDslu, 44704 SDs, 0 SdLazy, 13254 SolverSat, 346 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3139 GetRequests, 2768 SyntacticMatches, 17 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1604 ImplicationChecksByTransitivity, 21.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=453occurred in iteration=0, 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 36 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 221.4s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 5860 NumberOfCodeBlocks, 5842 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 5841 ConstructedInterpolants, 0 QuantifiedInterpolants, 5377491 SizeOfPredicates, 31 NumberOfNonLiveVariables, 8301 ConjunctsInSsa, 297 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 191/1710 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown