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_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:05:50,364 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:05:50,367 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:05:50,380 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:05:50,380 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:05:50,381 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:05:50,383 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:05:50,385 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:05:50,386 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:05:50,387 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:05:50,388 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:05:50,388 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:05:50,389 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:05:50,390 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:05:50,392 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:05:50,392 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:05:50,393 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:05:50,395 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:05:50,397 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:05:50,399 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:05:50,400 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:05:50,402 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:05:50,404 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:05:50,404 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:05:50,405 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:05:50,406 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:05:50,407 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:05:50,408 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:05:50,409 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:05:50,410 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:05:50,413 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:05:50,414 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:05:50,415 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:05:50,415 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:05:50,416 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:05:50,416 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:05:50,417 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 22:05:50,446 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:05:50,446 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:05:50,447 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:05:50,447 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:05:50,451 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:05:50,452 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:05:50,452 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:05:50,452 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:05:50,452 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:05:50,452 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:05:50,453 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:05:50,453 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:05:50,453 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:05:50,453 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:05:50,453 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:05:50,455 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:05:50,455 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:05:50,455 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:05:50,455 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:05:50,456 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:05:50,456 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:05:50,456 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:05:50,456 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:05:50,456 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:05:50,457 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:05:50,457 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:05:50,457 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:05:50,457 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:05:50,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:05:50,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:05:50,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:05:50,535 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:05:50,535 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:05:50,536 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label00_true-unreach-call.c [2018-10-26 22:05:50,618 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/64629a392/0afff92de7534147af5cc574275f260f/FLAGf65643f55 [2018-10-26 22:05:51,528 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:05:51,529 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label00_true-unreach-call.c [2018-10-26 22:05:51,583 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/64629a392/0afff92de7534147af5cc574275f260f/FLAGf65643f55 [2018-10-26 22:05:51,602 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/64629a392/0afff92de7534147af5cc574275f260f [2018-10-26 22:05:51,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:05:51,619 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:05:51,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:05:51,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:05:51,626 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:05:51,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:05:51" (1/1) ... [2018-10-26 22:05:51,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695bf9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:51, skipping insertion in model container [2018-10-26 22:05:51,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:05:51" (1/1) ... [2018-10-26 22:05:51,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:05:51,934 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:05:53,875 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:05:53,880 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:05:54,932 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:05:54,993 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:05:54,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54 WrapperNode [2018-10-26 22:05:54,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:05:54,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:05:54,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:05:54,995 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:05:55,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54" (1/1) ... [2018-10-26 22:05:55,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54" (1/1) ... [2018-10-26 22:05:56,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:05:56,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:05:56,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:05:56,087 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:05:56,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54" (1/1) ... [2018-10-26 22:05:56,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54" (1/1) ... [2018-10-26 22:05:56,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54" (1/1) ... [2018-10-26 22:05:56,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54" (1/1) ... [2018-10-26 22:05:56,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54" (1/1) ... [2018-10-26 22:05:56,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54" (1/1) ... [2018-10-26 22:05:56,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54" (1/1) ... [2018-10-26 22:05:56,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:05:56,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:05:56,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:05:56,742 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:05:56,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54" (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 22:05:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 22:05:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:05:56,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:06:14,314 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:06:14,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:06:14 BoogieIcfgContainer [2018-10-26 22:06:14,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:06:14,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:06:14,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:06:14,320 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:06:14,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:05:51" (1/3) ... [2018-10-26 22:06:14,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c10d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:06:14, skipping insertion in model container [2018-10-26 22:06:14,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:05:54" (2/3) ... [2018-10-26 22:06:14,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c10d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:06:14, skipping insertion in model container [2018-10-26 22:06:14,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:06:14" (3/3) ... [2018-10-26 22:06:14,324 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label00_true-unreach-call.c [2018-10-26 22:06:14,335 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:06:14,345 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:06:14,363 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:06:14,424 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:06:14,424 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:06:14,424 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:06:14,425 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:06:14,425 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:06:14,425 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:06:14,425 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:06:14,425 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:06:14,425 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:06:14,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 22:06:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-26 22:06:14,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:06:14,490 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:06:14,492 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:06:14,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:06:14,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1074275470, now seen corresponding path program 1 times [2018-10-26 22:06:14,501 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:06:14,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:06:14,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:06:14,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:06:14,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:06:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:06:15,281 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-26 22:06:15,360 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 22:06:15,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:06:15,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:06:15,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:06:15,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:06:15,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:06:15,386 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 22:06:37,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:06:37,411 INFO L93 Difference]: Finished difference Result 6324 states and 12081 transitions. [2018-10-26 22:06:37,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:06:37,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-10-26 22:06:37,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:06:37,484 INFO L225 Difference]: With dead ends: 6324 [2018-10-26 22:06:37,484 INFO L226 Difference]: Without dead ends: 4568 [2018-10-26 22:06:37,498 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 22:06:37,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2018-10-26 22:06:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4563. [2018-10-26 22:06:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-26 22:06:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7487 transitions. [2018-10-26 22:06:37,726 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7487 transitions. Word has length 41 [2018-10-26 22:06:37,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:06:37,727 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7487 transitions. [2018-10-26 22:06:37,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:06:37,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7487 transitions. [2018-10-26 22:06:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-26 22:06:37,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:06:37,735 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:06:37,736 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:06:37,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:06:37,736 INFO L82 PathProgramCache]: Analyzing trace with hash 215777173, now seen corresponding path program 1 times [2018-10-26 22:06:37,736 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:06:37,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:06:37,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:06:37,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:06:37,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:06:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:06:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:06:38,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:06:38,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:06:38,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:06:38,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:06:38,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:06:38,133 INFO L87 Difference]: Start difference. First operand 4563 states and 7487 transitions. Second operand 4 states. [2018-10-26 22:07:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:07:04,383 INFO L93 Difference]: Finished difference Result 17544 states and 29003 transitions. [2018-10-26 22:07:04,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:07:04,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2018-10-26 22:07:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:07:04,449 INFO L225 Difference]: With dead ends: 17544 [2018-10-26 22:07:04,450 INFO L226 Difference]: Without dead ends: 12983 [2018-10-26 22:07:04,458 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 22:07:04,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2018-10-26 22:07:04,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 12980. [2018-10-26 22:07:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12980 states. [2018-10-26 22:07:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12980 states to 12980 states and 20479 transitions. [2018-10-26 22:07:04,714 INFO L78 Accepts]: Start accepts. Automaton has 12980 states and 20479 transitions. Word has length 119 [2018-10-26 22:07:04,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:07:04,715 INFO L481 AbstractCegarLoop]: Abstraction has 12980 states and 20479 transitions. [2018-10-26 22:07:04,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:07:04,715 INFO L276 IsEmpty]: Start isEmpty. Operand 12980 states and 20479 transitions. [2018-10-26 22:07:04,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-26 22:07:04,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:04,726 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:07:04,726 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:04,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:04,727 INFO L82 PathProgramCache]: Analyzing trace with hash -378716299, now seen corresponding path program 1 times [2018-10-26 22:07:04,727 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:04,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:04,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:04,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:04,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:07:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:07:05,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:07:05,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:07:05,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:07:05,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:07:05,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:07:05,085 INFO L87 Difference]: Start difference. First operand 12980 states and 20479 transitions. Second operand 4 states. [2018-10-26 22:07:23,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:07:23,749 INFO L93 Difference]: Finished difference Result 50899 states and 80619 transitions. [2018-10-26 22:07:23,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:07:23,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-10-26 22:07:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:07:23,873 INFO L225 Difference]: With dead ends: 50899 [2018-10-26 22:07:23,874 INFO L226 Difference]: Without dead ends: 37921 [2018-10-26 22:07:23,902 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 22:07:23,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37921 states. [2018-10-26 22:07:24,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37921 to 37908. [2018-10-26 22:07:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37908 states. [2018-10-26 22:07:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37908 states to 37908 states and 50827 transitions. [2018-10-26 22:07:24,634 INFO L78 Accepts]: Start accepts. Automaton has 37908 states and 50827 transitions. Word has length 139 [2018-10-26 22:07:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:07:24,635 INFO L481 AbstractCegarLoop]: Abstraction has 37908 states and 50827 transitions. [2018-10-26 22:07:24,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:07:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 37908 states and 50827 transitions. [2018-10-26 22:07:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-26 22:07:24,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:24,641 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:07:24,641 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:24,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:24,644 INFO L82 PathProgramCache]: Analyzing trace with hash 15763358, now seen corresponding path program 1 times [2018-10-26 22:07:24,644 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:24,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:24,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:24,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:24,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:07:25,012 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:07:25,513 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-26 22:07:25,625 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-26 22:07:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:07:25,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:07:25,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:07:25,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:07:25,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:07:25,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:07:25,852 INFO L87 Difference]: Start difference. First operand 37908 states and 50827 transitions. Second operand 6 states. [2018-10-26 22:07:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:07:53,473 INFO L93 Difference]: Finished difference Result 125117 states and 164448 transitions. [2018-10-26 22:07:53,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:07:53,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-26 22:07:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:07:53,929 INFO L225 Difference]: With dead ends: 125117 [2018-10-26 22:07:53,929 INFO L226 Difference]: Without dead ends: 87211 [2018-10-26 22:07:53,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:07:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87211 states. [2018-10-26 22:07:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87211 to 85740. [2018-10-26 22:07:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85740 states. [2018-10-26 22:07:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85740 states to 85740 states and 110313 transitions. [2018-10-26 22:07:54,979 INFO L78 Accepts]: Start accepts. Automaton has 85740 states and 110313 transitions. Word has length 146 [2018-10-26 22:07:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:07:54,980 INFO L481 AbstractCegarLoop]: Abstraction has 85740 states and 110313 transitions. [2018-10-26 22:07:54,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:07:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 85740 states and 110313 transitions. [2018-10-26 22:07:54,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-26 22:07:54,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:54,983 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:07:54,983 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:54,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:54,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1493354488, now seen corresponding path program 1 times [2018-10-26 22:07:54,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:54,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:54,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:54,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:54,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:07:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:07:55,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:07:55,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:07:55,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:07:55,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:07:55,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:07:55,414 INFO L87 Difference]: Start difference. First operand 85740 states and 110313 transitions. Second operand 4 states. [2018-10-26 22:08:13,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:08:13,153 INFO L93 Difference]: Finished difference Result 215378 states and 276266 transitions. [2018-10-26 22:08:13,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:08:13,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 277 [2018-10-26 22:08:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:08:13,298 INFO L225 Difference]: With dead ends: 215378 [2018-10-26 22:08:13,299 INFO L226 Difference]: Without dead ends: 118708 [2018-10-26 22:08:13,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 22:08:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118708 states. [2018-10-26 22:08:14,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118708 to 118544. [2018-10-26 22:08:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118544 states. [2018-10-26 22:08:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118544 states to 118544 states and 145183 transitions. [2018-10-26 22:08:14,465 INFO L78 Accepts]: Start accepts. Automaton has 118544 states and 145183 transitions. Word has length 277 [2018-10-26 22:08:14,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:08:14,465 INFO L481 AbstractCegarLoop]: Abstraction has 118544 states and 145183 transitions. [2018-10-26 22:08:14,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:08:14,466 INFO L276 IsEmpty]: Start isEmpty. Operand 118544 states and 145183 transitions. [2018-10-26 22:08:14,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2018-10-26 22:08:14,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:08:14,480 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:08:14,480 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:08:14,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:08:14,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1821230627, now seen corresponding path program 1 times [2018-10-26 22:08:14,481 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:08:14,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:08:14,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:14,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:08:14,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:08:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-26 22:08:16,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:08:16,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:08:16,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:08:16,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:08:16,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:08:16,006 INFO L87 Difference]: Start difference. First operand 118544 states and 145183 transitions. Second operand 4 states. [2018-10-26 22:08:32,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:08:32,048 INFO L93 Difference]: Finished difference Result 235722 states and 288992 transitions. [2018-10-26 22:08:32,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:08:32,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 585 [2018-10-26 22:08:32,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:08:32,179 INFO L225 Difference]: With dead ends: 235722 [2018-10-26 22:08:32,179 INFO L226 Difference]: Without dead ends: 118546 [2018-10-26 22:08:32,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 22:08:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118546 states. [2018-10-26 22:08:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118546 to 114412. [2018-10-26 22:08:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114412 states. [2018-10-26 22:08:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114412 states to 114412 states and 127873 transitions. [2018-10-26 22:08:33,191 INFO L78 Accepts]: Start accepts. Automaton has 114412 states and 127873 transitions. Word has length 585 [2018-10-26 22:08:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:08:33,192 INFO L481 AbstractCegarLoop]: Abstraction has 114412 states and 127873 transitions. [2018-10-26 22:08:33,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:08:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 114412 states and 127873 transitions. [2018-10-26 22:08:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-10-26 22:08:33,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:08:33,208 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:08:33,208 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:08:33,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:08:33,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1730665567, now seen corresponding path program 1 times [2018-10-26 22:08:33,209 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:08:33,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:08:33,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:33,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:08:33,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:08:34,250 WARN L179 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-26 22:08:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 401 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-26 22:08:35,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:08:35,483 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:08:35,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:08:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:08:35,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:08:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-26 22:08:36,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:08:36,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 22:08:36,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:08:36,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:08:36,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:08:36,023 INFO L87 Difference]: Start difference. First operand 114412 states and 127873 transitions. Second operand 5 states. [2018-10-26 22:08:58,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:08:58,186 INFO L93 Difference]: Finished difference Result 254812 states and 283736 transitions. [2018-10-26 22:08:58,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:08:58,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 592 [2018-10-26 22:08:58,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:08:58,341 INFO L225 Difference]: With dead ends: 254812 [2018-10-26 22:08:58,341 INFO L226 Difference]: Without dead ends: 132162 [2018-10-26 22:08:58,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 592 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:08:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132162 states. [2018-10-26 22:08:59,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132162 to 86807. [2018-10-26 22:08:59,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86807 states. [2018-10-26 22:09:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86807 states to 86807 states and 92932 transitions. [2018-10-26 22:09:01,465 INFO L78 Accepts]: Start accepts. Automaton has 86807 states and 92932 transitions. Word has length 592 [2018-10-26 22:09:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:09:01,466 INFO L481 AbstractCegarLoop]: Abstraction has 86807 states and 92932 transitions. [2018-10-26 22:09:01,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:09:01,466 INFO L276 IsEmpty]: Start isEmpty. Operand 86807 states and 92932 transitions. [2018-10-26 22:09:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2018-10-26 22:09:01,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:09:01,480 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:09:01,480 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:09:01,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:09:01,481 INFO L82 PathProgramCache]: Analyzing trace with hash -4044790, now seen corresponding path program 1 times [2018-10-26 22:09:01,481 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:09:01,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:09:01,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:01,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:01,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-10-26 22:09:04,002 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:09:04,003 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:09:04,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:05,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:09:05,443 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 16 [2018-10-26 22:09:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-10-26 22:09:07,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:09:07,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-26 22:09:07,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:09:07,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:09:07,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:09:07,155 INFO L87 Difference]: Start difference. First operand 86807 states and 92932 transitions. Second operand 7 states. [2018-10-26 22:09:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:09:41,363 INFO L93 Difference]: Finished difference Result 310788 states and 332259 transitions. [2018-10-26 22:09:41,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:09:41,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 837 [2018-10-26 22:09:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:09:41,682 INFO L225 Difference]: With dead ends: 310788 [2018-10-26 22:09:41,682 INFO L226 Difference]: Without dead ends: 225349 [2018-10-26 22:09:41,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:09:41,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225349 states. Received shutdown request... [2018-10-26 22:09:42,748 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:09:42,753 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:09:42,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:09:42 BoogieIcfgContainer [2018-10-26 22:09:42,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:09:42,754 INFO L168 Benchmark]: Toolchain (without parser) took 231136.51 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 911.0 MB in the end (delta: 503.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-26 22:09:42,756 INFO L168 Benchmark]: CDTParser took 0.27 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 22:09:42,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3373.64 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: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:09:42,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 1092.14 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.3 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 117.1 MB. Max. memory is 7.1 GB. [2018-10-26 22:09:42,758 INFO L168 Benchmark]: Boogie Preprocessor took 654.02 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: 98.3 MB). Peak memory consumption was 98.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:09:42,759 INFO L168 Benchmark]: RCFGBuilder took 17574.45 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 267.4 MB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 546.3 MB). Peak memory consumption was 813.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:09:42,760 INFO L168 Benchmark]: TraceAbstraction took 208436.85 ms. Allocated memory was 2.7 GB in the beginning and 3.2 GB in the end (delta: 557.3 MB). Free memory was 1.5 GB in the beginning and 911.0 MB in the end (delta: 620.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-26 22:09:42,766 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 3373.64 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: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1092.14 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.3 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 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 654.02 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: 98.3 MB). Peak memory consumption was 98.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17574.45 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 267.4 MB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 546.3 MB). Peak memory consumption was 813.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208436.85 ms. Allocated memory was 2.7 GB in the beginning and 3.2 GB in the end (delta: 557.3 MB). Free memory was 1.5 GB in the beginning and 911.0 MB in the end (delta: 620.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 136). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 208.3s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 186.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11966 SDtfs, 42742 SDslu, 4002 SDs, 0 SdLazy, 76602 SolverSat, 19299 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 157.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1468 GetRequests, 1436 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118544occurred in iteration=5, 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: 8.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 51145 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 4165 NumberOfCodeBlocks, 4165 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4155 ConstructedInterpolants, 39 QuantifiedInterpolants, 16075713 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1660 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 2509/2745 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown