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/eca-rers2012/Problem19_label55_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:51:52,484 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:51:52,486 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:51:52,508 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:51:52,508 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:51:52,510 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:51:52,511 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:51:52,516 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:51:52,519 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:51:52,527 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:51:52,528 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:51:52,529 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:51:52,531 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:51:52,532 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:51:52,533 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:51:52,534 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:51:52,537 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:51:52,539 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:51:52,543 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:51:52,544 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:51:52,545 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:51:52,549 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:51:52,551 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:51:52,551 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:51:52,552 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:51:52,555 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:51:52,556 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:51:52,558 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:51:52,560 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:51:52,562 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:51:52,562 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:51:52,564 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:51:52,564 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:51:52,564 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:51:52,565 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:51:52,567 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:51:52,567 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 [2018-10-26 19:51:52,592 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:51:52,592 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:51:52,593 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:51:52,594 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:51:52,594 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:51:52,594 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:51:52,595 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:51:52,595 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:51:52,595 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:51:52,595 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:51:52,595 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:51:52,596 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:51:52,596 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:51:52,596 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:51:52,596 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:51:52,596 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:51:52,596 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:51:52,597 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:51:52,597 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:51:52,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:51:52,597 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:51:52,597 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:51:52,598 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:51:52,598 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:51:52,598 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:51:52,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:51:52,598 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:51:52,598 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:51:52,648 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:51:52,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:51:52,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:51:52,670 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:51:52,670 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:51:52,671 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label55_false-unreach-call.c [2018-10-26 19:51:52,746 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1c1922ef1/7c3b9e414c95442bb627b5cb4489a7d4/FLAG122a4d675 [2018-10-26 19:51:53,724 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:51:53,725 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label55_false-unreach-call.c [2018-10-26 19:51:53,774 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1c1922ef1/7c3b9e414c95442bb627b5cb4489a7d4/FLAG122a4d675 [2018-10-26 19:51:53,792 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1c1922ef1/7c3b9e414c95442bb627b5cb4489a7d4 [2018-10-26 19:51:53,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:51:53,809 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:51:53,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:51:53,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:51:53,816 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:51:53,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:51:53" (1/1) ... [2018-10-26 19:51:53,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:53, skipping insertion in model container [2018-10-26 19:51:53,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:51:53" (1/1) ... [2018-10-26 19:51:53,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:51:54,101 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:51:56,085 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:51:56,092 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:51:57,159 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:51:57,215 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:51:57,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57 WrapperNode [2018-10-26 19:51:57,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:51:57,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:51:57,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:51:57,217 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:51:57,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57" (1/1) ... [2018-10-26 19:51:57,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57" (1/1) ... [2018-10-26 19:51:58,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:51:58,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:51:58,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:51:58,387 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:51:58,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57" (1/1) ... [2018-10-26 19:51:58,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57" (1/1) ... [2018-10-26 19:51:58,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57" (1/1) ... [2018-10-26 19:51:58,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57" (1/1) ... [2018-10-26 19:51:58,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57" (1/1) ... [2018-10-26 19:51:58,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57" (1/1) ... [2018-10-26 19:51:59,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57" (1/1) ... [2018-10-26 19:51:59,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:51:59,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:51:59,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:51:59,163 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:51:59,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57" (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 [2018-10-26 19:51:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:51:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:51:59,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:52:16,759 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:52:16,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:52:16 BoogieIcfgContainer [2018-10-26 19:52:16,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:52:16,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:52:16,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:52:16,765 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:52:16,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:51:53" (1/3) ... [2018-10-26 19:52:16,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58339dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:52:16, skipping insertion in model container [2018-10-26 19:52:16,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:51:57" (2/3) ... [2018-10-26 19:52:16,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58339dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:52:16, skipping insertion in model container [2018-10-26 19:52:16,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:52:16" (3/3) ... [2018-10-26 19:52:16,771 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label55_false-unreach-call.c [2018-10-26 19:52:16,781 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:52:16,794 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:52:16,809 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:52:16,869 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:52:16,869 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:52:16,870 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:52:16,870 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:52:16,870 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:52:16,870 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:52:16,870 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:52:16,870 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:52:16,870 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:52:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 19:52:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 19:52:16,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:52:16,931 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:52:16,934 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:52:16,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:52:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1961166346, now seen corresponding path program 1 times [2018-10-26 19:52:16,942 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:52:16,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:52:16,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:52:16,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:52:16,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:52:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:52:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:52:17,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:52:17,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:52:17,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:52:17,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:52:17,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:52:17,280 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 19:52:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:52:46,913 INFO L93 Difference]: Finished difference Result 6322 states and 12078 transitions. [2018-10-26 19:52:46,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:52:46,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-26 19:52:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:52:47,068 INFO L225 Difference]: With dead ends: 6322 [2018-10-26 19:52:47,068 INFO L226 Difference]: Without dead ends: 4566 [2018-10-26 19:52:47,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:52:47,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2018-10-26 19:52:47,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4562. [2018-10-26 19:52:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4562 states. [2018-10-26 19:52:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4562 states to 4562 states and 7763 transitions. [2018-10-26 19:52:47,283 INFO L78 Accepts]: Start accepts. Automaton has 4562 states and 7763 transitions. Word has length 15 [2018-10-26 19:52:47,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:52:47,284 INFO L481 AbstractCegarLoop]: Abstraction has 4562 states and 7763 transitions. [2018-10-26 19:52:47,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:52:47,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4562 states and 7763 transitions. [2018-10-26 19:52:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-26 19:52:47,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:52:47,289 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:52:47,290 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:52:47,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:52:47,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2034846289, now seen corresponding path program 1 times [2018-10-26 19:52:47,290 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:52:47,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:52:47,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:52:47,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:52:47,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:52:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:52:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:52:47,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:52:47,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:52:47,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:52:47,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:52:47,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:52:47,738 INFO L87 Difference]: Start difference. First operand 4562 states and 7763 transitions. Second operand 4 states. [2018-10-26 19:53:18,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:53:18,081 INFO L93 Difference]: Finished difference Result 17536 states and 30099 transitions. [2018-10-26 19:53:18,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:53:18,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2018-10-26 19:53:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:53:18,146 INFO L225 Difference]: With dead ends: 17536 [2018-10-26 19:53:18,147 INFO L226 Difference]: Without dead ends: 12976 [2018-10-26 19:53:18,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:53:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2018-10-26 19:53:18,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 8660. [2018-10-26 19:53:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8660 states. [2018-10-26 19:53:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14380 transitions. [2018-10-26 19:53:18,363 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14380 transitions. Word has length 85 [2018-10-26 19:53:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:53:18,364 INFO L481 AbstractCegarLoop]: Abstraction has 8660 states and 14380 transitions. [2018-10-26 19:53:18,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:53:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14380 transitions. [2018-10-26 19:53:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-26 19:53:18,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:18,371 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:18,371 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:18,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:18,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1538210270, now seen corresponding path program 1 times [2018-10-26 19:53:18,373 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:53:18,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:53:18,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:18,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:18,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:53:18,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:53:18,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:53:18,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:53:18,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:53:18,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:53:18,779 INFO L87 Difference]: Start difference. First operand 8660 states and 14380 transitions. Second operand 4 states. [2018-10-26 19:53:38,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:53:38,279 INFO L93 Difference]: Finished difference Result 33813 states and 56473 transitions. [2018-10-26 19:53:38,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:53:38,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2018-10-26 19:53:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:53:38,365 INFO L225 Difference]: With dead ends: 33813 [2018-10-26 19:53:38,366 INFO L226 Difference]: Without dead ends: 25155 [2018-10-26 19:53:38,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:53:38,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25155 states. [2018-10-26 19:53:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25155 to 16865. [2018-10-26 19:53:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16865 states. [2018-10-26 19:53:38,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16865 states to 16865 states and 24314 transitions. [2018-10-26 19:53:38,774 INFO L78 Accepts]: Start accepts. Automaton has 16865 states and 24314 transitions. Word has length 107 [2018-10-26 19:53:38,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:53:38,776 INFO L481 AbstractCegarLoop]: Abstraction has 16865 states and 24314 transitions. [2018-10-26 19:53:38,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:53:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 16865 states and 24314 transitions. [2018-10-26 19:53:38,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-26 19:53:38,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:53:38,783 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:53:38,783 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:53:38,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:53:38,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1362622900, now seen corresponding path program 1 times [2018-10-26 19:53:38,785 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:53:38,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:53:38,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:38,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:53:38,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:53:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:53:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:53:39,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:53:39,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:53:39,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:53:39,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:53:39,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:53:39,120 INFO L87 Difference]: Start difference. First operand 16865 states and 24314 transitions. Second operand 4 states. [2018-10-26 19:54:01,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:54:01,108 INFO L93 Difference]: Finished difference Result 65426 states and 94868 transitions. [2018-10-26 19:54:01,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:54:01,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2018-10-26 19:54:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:54:01,215 INFO L225 Difference]: With dead ends: 65426 [2018-10-26 19:54:01,216 INFO L226 Difference]: Without dead ends: 48563 [2018-10-26 19:54:01,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:54:01,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48563 states. [2018-10-26 19:54:01,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48563 to 48550. [2018-10-26 19:54:01,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48550 states. [2018-10-26 19:54:01,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48550 states to 48550 states and 63472 transitions. [2018-10-26 19:54:01,900 INFO L78 Accepts]: Start accepts. Automaton has 48550 states and 63472 transitions. Word has length 116 [2018-10-26 19:54:01,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:54:01,900 INFO L481 AbstractCegarLoop]: Abstraction has 48550 states and 63472 transitions. [2018-10-26 19:54:01,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:54:01,901 INFO L276 IsEmpty]: Start isEmpty. Operand 48550 states and 63472 transitions. [2018-10-26 19:54:01,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-26 19:54:01,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:54:01,912 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:54:01,913 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:54:01,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:54:01,913 INFO L82 PathProgramCache]: Analyzing trace with hash 571693272, now seen corresponding path program 1 times [2018-10-26 19:54:01,913 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:54:01,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:54:01,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:54:01,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:54:01,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:54:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:54:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-26 19:54:02,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:54:02,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:54:02,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:54:02,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:54:02,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:54:02,321 INFO L87 Difference]: Start difference. First operand 48550 states and 63472 transitions. Second operand 4 states. [2018-10-26 19:54:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:54:19,222 INFO L93 Difference]: Finished difference Result 112127 states and 144774 transitions. [2018-10-26 19:54:19,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:54:19,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-10-26 19:54:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:54:19,310 INFO L225 Difference]: With dead ends: 112127 [2018-10-26 19:54:19,310 INFO L226 Difference]: Without dead ends: 63579 [2018-10-26 19:54:19,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:54:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63579 states. [2018-10-26 19:54:20,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63579 to 63570. [2018-10-26 19:54:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63570 states. [2018-10-26 19:54:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63570 states to 63570 states and 77358 transitions. [2018-10-26 19:54:20,667 INFO L78 Accepts]: Start accepts. Automaton has 63570 states and 77358 transitions. Word has length 178 [2018-10-26 19:54:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:54:20,668 INFO L481 AbstractCegarLoop]: Abstraction has 63570 states and 77358 transitions. [2018-10-26 19:54:20,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:54:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 63570 states and 77358 transitions. [2018-10-26 19:54:20,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2018-10-26 19:54:20,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:54:20,691 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:54:20,691 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:54:20,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:54:20,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1273459280, now seen corresponding path program 1 times [2018-10-26 19:54:20,695 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:54:20,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:54:20,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:54:20,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:54:20,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:54:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:54:21,724 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-26 19:54:22,242 WARN L179 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-10-26 19:54:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-26 19:54:23,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:54:23,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 19:54:23,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:54:23,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:54:23,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:54:23,530 INFO L87 Difference]: Start difference. First operand 63570 states and 77358 transitions. Second operand 8 states. [2018-10-26 19:54:47,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:54:47,666 INFO L93 Difference]: Finished difference Result 174483 states and 212363 transitions. [2018-10-26 19:54:47,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 19:54:47,667 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 751 [2018-10-26 19:54:47,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:54:47,819 INFO L225 Difference]: With dead ends: 174483 [2018-10-26 19:54:47,819 INFO L226 Difference]: Without dead ends: 110915 [2018-10-26 19:54:47,872 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-10-26 19:54:47,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110915 states. [2018-10-26 19:54:48,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110915 to 64936. [2018-10-26 19:54:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64936 states. [2018-10-26 19:54:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64936 states to 64936 states and 78730 transitions. [2018-10-26 19:54:49,001 INFO L78 Accepts]: Start accepts. Automaton has 64936 states and 78730 transitions. Word has length 751 [2018-10-26 19:54:49,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:54:49,002 INFO L481 AbstractCegarLoop]: Abstraction has 64936 states and 78730 transitions. [2018-10-26 19:54:49,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:54:49,002 INFO L276 IsEmpty]: Start isEmpty. Operand 64936 states and 78730 transitions. [2018-10-26 19:54:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2018-10-26 19:54:49,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:54:49,035 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:54:49,036 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:54:49,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:54:49,036 INFO L82 PathProgramCache]: Analyzing trace with hash 781104325, now seen corresponding path program 1 times [2018-10-26 19:54:49,036 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:54:49,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:54:49,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:54:49,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:54:49,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:54:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:54:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-10-26 19:54:50,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:54:50,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:54:50,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:54:50,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:54:50,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:54:50,303 INFO L87 Difference]: Start difference. First operand 64936 states and 78730 transitions. Second operand 5 states. [2018-10-26 19:55:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:55:21,661 INFO L93 Difference]: Finished difference Result 229770 states and 282817 transitions. [2018-10-26 19:55:21,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:55:21,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 870 [2018-10-26 19:55:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:55:21,852 INFO L225 Difference]: With dead ends: 229770 [2018-10-26 19:55:21,852 INFO L226 Difference]: Without dead ends: 166202 [2018-10-26 19:55:21,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:55:22,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166202 states. [2018-10-26 19:55:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166202 to 127786. [2018-10-26 19:55:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127786 states. [2018-10-26 19:55:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127786 states to 127786 states and 154598 transitions. [2018-10-26 19:55:23,256 INFO L78 Accepts]: Start accepts. Automaton has 127786 states and 154598 transitions. Word has length 870 [2018-10-26 19:55:23,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:55:23,257 INFO L481 AbstractCegarLoop]: Abstraction has 127786 states and 154598 transitions. [2018-10-26 19:55:23,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:55:23,257 INFO L276 IsEmpty]: Start isEmpty. Operand 127786 states and 154598 transitions. [2018-10-26 19:55:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2018-10-26 19:55:23,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:55:23,297 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:55:23,298 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:55:23,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:55:23,298 INFO L82 PathProgramCache]: Analyzing trace with hash 792380523, now seen corresponding path program 1 times [2018-10-26 19:55:23,298 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:55:23,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:55:23,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:55:23,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:55:23,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:55:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:55:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-10-26 19:55:25,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:55:25,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:55:25,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:55:25,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:55:25,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:55:25,285 INFO L87 Difference]: Start difference. First operand 127786 states and 154598 transitions. Second operand 3 states. [2018-10-26 19:55:37,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:55:37,377 INFO L93 Difference]: Finished difference Result 291085 states and 352937 transitions. [2018-10-26 19:55:37,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:55:37,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 954 [2018-10-26 19:55:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:55:37,537 INFO L225 Difference]: With dead ends: 291085 [2018-10-26 19:55:37,537 INFO L226 Difference]: Without dead ends: 164667 [2018-10-26 19:55:37,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:55:37,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164667 states. [2018-10-26 19:55:38,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164667 to 157836. [2018-10-26 19:55:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157836 states. [2018-10-26 19:55:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157836 states to 157836 states and 188439 transitions. [2018-10-26 19:55:39,057 INFO L78 Accepts]: Start accepts. Automaton has 157836 states and 188439 transitions. Word has length 954 [2018-10-26 19:55:39,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:55:39,059 INFO L481 AbstractCegarLoop]: Abstraction has 157836 states and 188439 transitions. [2018-10-26 19:55:39,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:55:39,060 INFO L276 IsEmpty]: Start isEmpty. Operand 157836 states and 188439 transitions. [2018-10-26 19:55:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2018-10-26 19:55:39,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:55:39,080 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:55:39,080 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:55:39,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:55:39,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2063917265, now seen corresponding path program 1 times [2018-10-26 19:55:39,081 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:55:39,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:55:39,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:55:39,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:55:39,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:55:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:55:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2018-10-26 19:55:41,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:55:41,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:55:41,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:55:41,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:55:41,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:55:41,466 INFO L87 Difference]: Start difference. First operand 157836 states and 188439 transitions. Second operand 3 states. Received shutdown request... [2018-10-26 19:55:48,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:55:48,467 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:55:48,473 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:55:48,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:55:48 BoogieIcfgContainer [2018-10-26 19:55:48,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:55:48,474 INFO L168 Benchmark]: Toolchain (without parser) took 234668.00 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -679.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-26 19:55:48,476 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-26 19:55:48,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3406.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:55:48,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 1169.79 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 879.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:55:48,478 INFO L168 Benchmark]: Boogie Preprocessor took 775.64 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.9 MB). Peak memory consumption was 101.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:55:48,479 INFO L168 Benchmark]: RCFGBuilder took 17597.83 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 295.7 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -387.3 MB). Peak memory consumption was 834.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:55:48,480 INFO L168 Benchmark]: TraceAbstraction took 211711.95 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 699.4 MB). Free memory was 2.5 GB in the beginning and 2.1 GB in the end (delta: 380.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-26 19:55:48,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 3406.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1169.79 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 879.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 775.64 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.9 MB). Peak memory consumption was 101.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17597.83 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 295.7 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -387.3 MB). Peak memory consumption was 834.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211711.95 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 699.4 MB). Free memory was 2.5 GB in the beginning and 2.1 GB in the end (delta: 380.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 58). Cancelled while BasicCegarLoop was constructing difference of abstraction (157836states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (73159 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 211.6s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 194.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14192 SDtfs, 37330 SDslu, 8745 SDs, 0 SdLazy, 67711 SolverSat, 19447 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 165.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157836occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 103858 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 4087 NumberOfCodeBlocks, 4087 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4078 ConstructedInterpolants, 0 QuantifiedInterpolants, 9134544 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 2531/2531 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown