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-crafted/simple_array_index_value_true-unreach-call4.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b6335f6 [2018-10-23 09:35:05,473 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 09:35:05,475 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 09:35:05,493 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 09:35:05,493 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 09:35:05,495 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 09:35:05,499 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 09:35:05,501 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 09:35:05,504 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 09:35:05,505 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 09:35:05,507 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 09:35:05,507 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 09:35:05,511 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 09:35:05,512 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 09:35:05,515 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 09:35:05,516 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 09:35:05,517 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 09:35:05,526 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 09:35:05,528 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 09:35:05,533 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 09:35:05,534 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 09:35:05,536 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 09:35:05,540 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 09:35:05,555 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 09:35:05,582 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 09:35:05,583 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 09:35:05,583 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 09:35:05,584 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 09:35:05,584 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 09:35:05,585 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 09:35:05,585 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 09:35:05,585 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 09:35:05,585 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 09:35:05,585 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 09:35:05,586 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 09:35:05,586 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 09:35:05,586 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 09:35:05,586 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 09:35:05,586 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 09:35:05,587 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 09:35:05,587 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 09:35:05,587 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 09:35:05,587 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 09:35:05,588 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 09:35:05,588 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 09:35:05,588 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 09:35:05,588 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 09:35:05,588 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 09:35:05,589 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 09:35:05,589 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 09:35:05,589 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 09:35:05,589 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 09:35:05,635 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 09:35:05,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 09:35:05,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 09:35:05,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 09:35:05,653 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 09:35:05,654 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call4.i.v+lhb-reducer.c [2018-10-23 09:35:05,715 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd8dc5f0c/202c33eb346b4904891bd5d4dbe5085f/FLAGa8297838f [2018-10-23 09:35:06,114 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 09:35:06,115 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call4.i.v+lhb-reducer.c [2018-10-23 09:35:06,122 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd8dc5f0c/202c33eb346b4904891bd5d4dbe5085f/FLAGa8297838f [2018-10-23 09:35:06,135 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd8dc5f0c/202c33eb346b4904891bd5d4dbe5085f [2018-10-23 09:35:06,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 09:35:06,148 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 09:35:06,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 09:35:06,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 09:35:06,153 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 09:35:06,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:35:06" (1/1) ... [2018-10-23 09:35:06,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d555d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06, skipping insertion in model container [2018-10-23 09:35:06,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:35:06" (1/1) ... [2018-10-23 09:35:06,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 09:35:06,196 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 09:35:06,408 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:35:06,418 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 09:35:06,464 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:35:06,502 INFO L193 MainTranslator]: Completed translation [2018-10-23 09:35:06,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06 WrapperNode [2018-10-23 09:35:06,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 09:35:06,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 09:35:06,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 09:35:06,505 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 09:35:06,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06" (1/1) ... [2018-10-23 09:35:06,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06" (1/1) ... [2018-10-23 09:35:06,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 09:35:06,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 09:35:06,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 09:35:06,555 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 09:35:06,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06" (1/1) ... [2018-10-23 09:35:06,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06" (1/1) ... [2018-10-23 09:35:06,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06" (1/1) ... [2018-10-23 09:35:06,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06" (1/1) ... [2018-10-23 09:35:06,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06" (1/1) ... [2018-10-23 09:35:06,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06" (1/1) ... [2018-10-23 09:35:06,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06" (1/1) ... [2018-10-23 09:35:06,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 09:35:06,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 09:35:06,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 09:35:06,581 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 09:35:06,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06" (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 09:35:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 09:35:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 09:35:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-23 09:35:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-23 09:35:07,241 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 09:35:07,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:35:07 BoogieIcfgContainer [2018-10-23 09:35:07,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 09:35:07,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 09:35:07,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 09:35:07,248 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 09:35:07,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:35:06" (1/3) ... [2018-10-23 09:35:07,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1252bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:35:07, skipping insertion in model container [2018-10-23 09:35:07,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:35:06" (2/3) ... [2018-10-23 09:35:07,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1252bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:35:07, skipping insertion in model container [2018-10-23 09:35:07,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:35:07" (3/3) ... [2018-10-23 09:35:07,251 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_true-unreach-call4.i.v+lhb-reducer.c [2018-10-23 09:35:07,261 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 09:35:07,269 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-10-23 09:35:07,286 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-10-23 09:35:07,318 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 09:35:07,319 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 09:35:07,319 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 09:35:07,319 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 09:35:07,319 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 09:35:07,319 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 09:35:07,320 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 09:35:07,320 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 09:35:07,320 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 09:35:07,337 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-10-23 09:35:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-23 09:35:07,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:35:07,345 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:35:07,348 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:35:07,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:35:07,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2070563183, now seen corresponding path program 1 times [2018-10-23 09:35:07,356 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:35:07,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:35:07,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:07,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:35:07,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:35:07,507 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 09:35:07,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:35:07,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 09:35:07,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 09:35:07,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 09:35:07,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 09:35:07,528 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2018-10-23 09:35:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:35:07,778 INFO L93 Difference]: Finished difference Result 114 states and 139 transitions. [2018-10-23 09:35:07,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 09:35:07,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-23 09:35:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:35:07,791 INFO L225 Difference]: With dead ends: 114 [2018-10-23 09:35:07,792 INFO L226 Difference]: Without dead ends: 51 [2018-10-23 09:35:07,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 09:35:07,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-23 09:35:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2018-10-23 09:35:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-23 09:35:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-10-23 09:35:07,836 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 10 [2018-10-23 09:35:07,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:35:07,838 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-10-23 09:35:07,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 09:35:07,839 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-10-23 09:35:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-23 09:35:07,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:35:07,840 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:35:07,840 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:35:07,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:35:07,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2140661612, now seen corresponding path program 1 times [2018-10-23 09:35:07,841 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:35:07,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:35:07,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:07,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:35:07,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:35:08,008 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 09:35:08,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:35:08,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 09:35:08,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 09:35:08,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 09:35:08,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-23 09:35:08,014 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 4 states. [2018-10-23 09:35:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:35:08,252 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2018-10-23 09:35:08,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 09:35:08,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-23 09:35:08,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:35:08,254 INFO L225 Difference]: With dead ends: 67 [2018-10-23 09:35:08,254 INFO L226 Difference]: Without dead ends: 65 [2018-10-23 09:35:08,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 09:35:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-23 09:35:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 43. [2018-10-23 09:35:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-23 09:35:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-10-23 09:35:08,263 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 10 [2018-10-23 09:35:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:35:08,263 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-10-23 09:35:08,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 09:35:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-10-23 09:35:08,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-23 09:35:08,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:35:08,265 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:35:08,265 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:35:08,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:35:08,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2013215913, now seen corresponding path program 1 times [2018-10-23 09:35:08,265 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:35:08,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:35:08,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:08,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:35:08,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:35:08,323 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 09:35:08,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:35:08,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 09:35:08,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 09:35:08,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 09:35:08,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 09:35:08,325 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 3 states. [2018-10-23 09:35:08,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:35:08,441 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2018-10-23 09:35:08,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 09:35:08,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-23 09:35:08,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:35:08,443 INFO L225 Difference]: With dead ends: 73 [2018-10-23 09:35:08,444 INFO L226 Difference]: Without dead ends: 47 [2018-10-23 09:35:08,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 09:35:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-23 09:35:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2018-10-23 09:35:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-23 09:35:08,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-10-23 09:35:08,450 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 11 [2018-10-23 09:35:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:35:08,450 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-10-23 09:35:08,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 09:35:08,450 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-10-23 09:35:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-23 09:35:08,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:35:08,451 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:35:08,452 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:35:08,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:35:08,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1852178964, now seen corresponding path program 1 times [2018-10-23 09:35:08,452 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:35:08,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:35:08,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:08,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:35:08,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:35:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:35:08,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:35:08,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 09:35:08,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 09:35:08,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 09:35:08,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 09:35:08,538 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 3 states. [2018-10-23 09:35:08,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:35:08,550 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-10-23 09:35:08,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 09:35:08,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-10-23 09:35:08,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:35:08,551 INFO L225 Difference]: With dead ends: 50 [2018-10-23 09:35:08,551 INFO L226 Difference]: Without dead ends: 34 [2018-10-23 09:35:08,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 09:35:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-23 09:35:08,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-10-23 09:35:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-23 09:35:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2018-10-23 09:35:08,557 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2018-10-23 09:35:08,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:35:08,557 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2018-10-23 09:35:08,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 09:35:08,558 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2018-10-23 09:35:08,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-23 09:35:08,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:35:08,558 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:35:08,559 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:35:08,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:35:08,559 INFO L82 PathProgramCache]: Analyzing trace with hash 147701691, now seen corresponding path program 1 times [2018-10-23 09:35:08,559 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:35:08,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:35:08,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:08,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:35:08,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:35:08,684 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 09:35:08,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:35:08,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 09:35:08,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 09:35:08,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 09:35:08,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-23 09:35:08,686 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2018-10-23 09:35:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:35:08,899 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-10-23 09:35:08,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 09:35:08,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-10-23 09:35:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:35:08,904 INFO L225 Difference]: With dead ends: 67 [2018-10-23 09:35:08,904 INFO L226 Difference]: Without dead ends: 65 [2018-10-23 09:35:08,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-10-23 09:35:08,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-23 09:35:08,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 32. [2018-10-23 09:35:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-23 09:35:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2018-10-23 09:35:08,911 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 19 [2018-10-23 09:35:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:35:08,912 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2018-10-23 09:35:08,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 09:35:08,912 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2018-10-23 09:35:08,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-23 09:35:08,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:35:08,913 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:35:08,914 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:35:08,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:35:08,914 INFO L82 PathProgramCache]: Analyzing trace with hash 166618976, now seen corresponding path program 1 times [2018-10-23 09:35:08,914 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:35:08,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:35:08,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:08,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:35:08,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:35:09,139 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 09:35:09,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:35:09,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 09:35:09,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 09:35:09,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 09:35:09,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 09:35:09,143 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2018-10-23 09:35:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:35:09,792 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2018-10-23 09:35:09,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 09:35:09,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-10-23 09:35:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:35:09,796 INFO L225 Difference]: With dead ends: 107 [2018-10-23 09:35:09,796 INFO L226 Difference]: Without dead ends: 84 [2018-10-23 09:35:09,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-10-23 09:35:09,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-23 09:35:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 38. [2018-10-23 09:35:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-23 09:35:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-10-23 09:35:09,806 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 19 [2018-10-23 09:35:09,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:35:09,806 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-10-23 09:35:09,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 09:35:09,806 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-10-23 09:35:09,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-23 09:35:09,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:35:09,807 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:35:09,808 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:35:09,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:35:09,808 INFO L82 PathProgramCache]: Analyzing trace with hash 296175317, now seen corresponding path program 1 times [2018-10-23 09:35:09,808 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:35:09,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:35:09,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:09,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:35:09,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:35:09,949 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 09:35:09,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:35:09,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 09:35:09,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 09:35:09,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 09:35:09,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 09:35:09,951 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 5 states. [2018-10-23 09:35:10,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:35:10,105 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2018-10-23 09:35:10,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 09:35:10,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-10-23 09:35:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:35:10,107 INFO L225 Difference]: With dead ends: 77 [2018-10-23 09:35:10,107 INFO L226 Difference]: Without dead ends: 54 [2018-10-23 09:35:10,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 09:35:10,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-23 09:35:10,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2018-10-23 09:35:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-23 09:35:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-10-23 09:35:10,116 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 20 [2018-10-23 09:35:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:35:10,116 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-10-23 09:35:10,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 09:35:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-10-23 09:35:10,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-23 09:35:10,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:35:10,117 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] [2018-10-23 09:35:10,118 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:35:10,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:35:10,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1986066373, now seen corresponding path program 1 times [2018-10-23 09:35:10,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:35:10,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:35:10,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:10,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:35:10,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:35:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:35:10,647 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2018-10-23 09:35:11,241 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2018-10-23 09:35:43,290 WARN L179 SmtUtils]: Spent 22.51 s on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-23 09:35:47,035 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 09:35:47,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:35:47,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-10-23 09:35:47,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-23 09:35:47,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-23 09:35:47,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2018-10-23 09:35:47,037 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 16 states. [2018-10-23 09:35:53,604 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2018-10-23 09:36:03,868 WARN L179 SmtUtils]: Spent 7.21 s on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2018-10-23 09:36:29,695 WARN L179 SmtUtils]: Spent 19.27 s on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2018-10-23 09:36:52,538 WARN L179 SmtUtils]: Spent 7.83 s on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2018-10-23 09:37:39,775 WARN L179 SmtUtils]: Spent 43.32 s on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2018-10-23 09:38:29,353 WARN L179 SmtUtils]: Spent 41.86 s on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2018-10-23 09:39:08,800 WARN L179 SmtUtils]: Spent 39.39 s on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2018-10-23 09:39:55,221 WARN L179 SmtUtils]: Spent 39.16 s on a formula simplification. DAG size of input: 94 DAG size of output: 74 Received shutdown request... [2018-10-23 09:40:00,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-23 09:40:00,457 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 09:40:00,461 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 09:40:00,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:40:00 BoogieIcfgContainer [2018-10-23 09:40:00,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 09:40:00,462 INFO L168 Benchmark]: Toolchain (without parser) took 294315.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -385.6 MB). Peak memory consumption was 373.6 MB. Max. memory is 7.1 GB. [2018-10-23 09:40:00,464 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 09:40:00,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.36 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-23 09:40:00,465 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.32 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 09:40:00,466 INFO L168 Benchmark]: Boogie Preprocessor took 25.11 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 09:40:00,466 INFO L168 Benchmark]: RCFGBuilder took 661.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -795.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-10-23 09:40:00,467 INFO L168 Benchmark]: TraceAbstraction took 293218.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 399.3 MB). Peak memory consumption was 399.3 MB. Max. memory is 7.1 GB. [2018-10-23 09:40:00,472 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.36 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.32 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. * Boogie Preprocessor took 25.11 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. * RCFGBuilder took 661.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -795.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 293218.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 399.3 MB). Peak memory consumption was 399.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was constructing difference of abstraction (38states) and FLOYD_HOARE automaton (currently 18 states, 16 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 68). Cancelled while BasicCegarLoop was constructing difference of abstraction (38states) and FLOYD_HOARE automaton (currently 18 states, 16 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 162). Cancelled while BasicCegarLoop was constructing difference of abstraction (38states) and FLOYD_HOARE automaton (currently 18 states, 16 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 104). Cancelled while BasicCegarLoop was constructing difference of abstraction (38states) and FLOYD_HOARE automaton (currently 18 states, 16 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 65 locations, 4 error locations. TIMEOUT Result, 293.1s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 255.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 294 SDtfs, 414 SDslu, 393 SDs, 0 SdLazy, 293 SolverSat, 26 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 26.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 264.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 140 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 37.5s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 30396 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown