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_label27_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:48:40,546 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:48:40,548 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:48:40,567 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:48:40,568 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:48:40,570 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:48:40,571 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:48:40,574 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:48:40,576 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:48:40,577 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:48:40,578 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:48:40,578 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:48:40,580 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:48:40,582 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:48:40,583 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:48:40,584 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:48:40,584 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:48:40,589 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:48:40,597 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:48:40,601 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:48:40,602 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:48:40,603 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:48:40,609 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:48:40,609 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:48:40,610 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:48:40,611 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:48:40,611 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:48:40,615 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:48:40,616 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:48:40,617 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:48:40,618 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:48:40,619 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:48:40,623 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 19:48:40,647 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:48:40,648 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:48:40,649 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:48:40,649 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:48:40,650 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:48:40,650 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:48:40,650 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:48:40,651 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:48:40,652 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:48:40,652 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:48:40,652 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:48:40,652 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:48:40,652 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:48:40,653 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:48:40,653 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:48:40,653 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:48:40,653 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:48:40,653 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:48:40,654 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:48:40,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:48:40,654 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:48:40,654 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:48:40,654 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:48:40,655 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:48:40,655 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:48:40,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:48:40,655 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:48:40,655 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:48:40,706 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:48:40,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:48:40,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:48:40,729 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:48:40,730 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:48:40,730 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label27_false-unreach-call.c [2018-10-26 19:48:40,792 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/96fde0fb0/c021da9fc2e24666aea5dc34995b7fed/FLAG4eb38d7a1 [2018-10-26 19:48:41,723 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:48:41,724 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label27_false-unreach-call.c [2018-10-26 19:48:41,776 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/96fde0fb0/c021da9fc2e24666aea5dc34995b7fed/FLAG4eb38d7a1 [2018-10-26 19:48:41,797 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/96fde0fb0/c021da9fc2e24666aea5dc34995b7fed [2018-10-26 19:48:41,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:48:41,813 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:48:41,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:48:41,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:48:41,820 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:48:41,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:48:41" (1/1) ... [2018-10-26 19:48:41,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f22fcff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:41, skipping insertion in model container [2018-10-26 19:48:41,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:48:41" (1/1) ... [2018-10-26 19:48:41,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:48:42,095 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:48:44,012 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:48:44,018 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:48:45,031 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:48:45,086 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:48:45,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45 WrapperNode [2018-10-26 19:48:45,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:48:45,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:48:45,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:48:45,088 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:48:45,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2018-10-26 19:48:45,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2018-10-26 19:48:46,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:48:46,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:48:46,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:48:46,310 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:48:46,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2018-10-26 19:48:46,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2018-10-26 19:48:46,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2018-10-26 19:48:46,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2018-10-26 19:48:46,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2018-10-26 19:48:46,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2018-10-26 19:48:46,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2018-10-26 19:48:46,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:48:46,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:48:46,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:48:46,964 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:48:46,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (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 19:48:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:48:47,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:48:47,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:49:04,314 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:49:04,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:49:04 BoogieIcfgContainer [2018-10-26 19:49:04,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:49:04,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:49:04,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:49:04,321 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:49:04,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:48:41" (1/3) ... [2018-10-26 19:49:04,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36715c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:49:04, skipping insertion in model container [2018-10-26 19:49:04,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (2/3) ... [2018-10-26 19:49:04,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36715c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:49:04, skipping insertion in model container [2018-10-26 19:49:04,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:49:04" (3/3) ... [2018-10-26 19:49:04,325 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label27_false-unreach-call.c [2018-10-26 19:49:04,335 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:49:04,347 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:49:04,365 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:49:04,425 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:49:04,426 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:49:04,426 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:49:04,426 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:49:04,426 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:49:04,426 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:49:04,426 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:49:04,427 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:49:04,427 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:49:04,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 19:49:04,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-26 19:49:04,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:04,490 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] [2018-10-26 19:49:04,492 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:04,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:04,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1880720510, now seen corresponding path program 1 times [2018-10-26 19:49:04,501 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:49:04,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:49:04,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:04,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:04,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:04,851 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 19:49:04,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:49:04,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:49:04,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:49:04,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:49:04,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:49:04,878 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 19:49:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:27,784 INFO L93 Difference]: Finished difference Result 6361 states and 12176 transitions. [2018-10-26 19:49:27,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:49:27,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-10-26 19:49:27,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:27,942 INFO L225 Difference]: With dead ends: 6361 [2018-10-26 19:49:27,942 INFO L226 Difference]: Without dead ends: 4605 [2018-10-26 19:49:27,952 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 19:49:27,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2018-10-26 19:49:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 3148. [2018-10-26 19:49:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2018-10-26 19:49:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5068 transitions. [2018-10-26 19:49:28,142 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5068 transitions. Word has length 28 [2018-10-26 19:49:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:28,143 INFO L481 AbstractCegarLoop]: Abstraction has 3148 states and 5068 transitions. [2018-10-26 19:49:28,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:49:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5068 transitions. [2018-10-26 19:49:28,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-26 19:49:28,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:28,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:28,148 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:28,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:28,149 INFO L82 PathProgramCache]: Analyzing trace with hash -2127246618, now seen corresponding path program 1 times [2018-10-26 19:49:28,149 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:49:28,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:49:28,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:28,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:28,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:28,582 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 19:49:29,095 WARN L179 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-26 19:49:29,817 WARN L179 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-26 19:49:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:49:29,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:49:29,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:49:29,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:49:29,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:49:29,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:49:29,991 INFO L87 Difference]: Start difference. First operand 3148 states and 5068 transitions. Second operand 6 states. [2018-10-26 19:50:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:50:06,202 INFO L93 Difference]: Finished difference Result 13170 states and 20020 transitions. [2018-10-26 19:50:06,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:50:06,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-10-26 19:50:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:50:06,250 INFO L225 Difference]: With dead ends: 13170 [2018-10-26 19:50:06,250 INFO L226 Difference]: Without dead ends: 10024 [2018-10-26 19:50:06,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:50:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10024 states. [2018-10-26 19:50:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10024 to 8652. [2018-10-26 19:50:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2018-10-26 19:50:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 12036 transitions. [2018-10-26 19:50:06,420 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 12036 transitions. Word has length 96 [2018-10-26 19:50:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:50:06,420 INFO L481 AbstractCegarLoop]: Abstraction has 8652 states and 12036 transitions. [2018-10-26 19:50:06,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:50:06,421 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 12036 transitions. [2018-10-26 19:50:06,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-26 19:50:06,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:50:06,430 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:06,430 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:50:06,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:50:06,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1184973211, now seen corresponding path program 1 times [2018-10-26 19:50:06,431 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:50:06,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:50:06,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:06,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:06,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-26 19:50:07,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:50:07,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:50:07,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:50:07,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:50:07,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:50:07,458 INFO L87 Difference]: Start difference. First operand 8652 states and 12036 transitions. Second operand 7 states. [2018-10-26 19:50:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:50:44,686 INFO L93 Difference]: Finished difference Result 26878 states and 36468 transitions. [2018-10-26 19:50:44,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:50:44,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2018-10-26 19:50:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:50:44,745 INFO L225 Difference]: With dead ends: 26878 [2018-10-26 19:50:44,745 INFO L226 Difference]: Without dead ends: 18228 [2018-10-26 19:50:44,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:50:44,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18228 states. [2018-10-26 19:50:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18228 to 15493. [2018-10-26 19:50:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15493 states. [2018-10-26 19:50:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15493 states to 15493 states and 19189 transitions. [2018-10-26 19:50:45,014 INFO L78 Accepts]: Start accepts. Automaton has 15493 states and 19189 transitions. Word has length 304 [2018-10-26 19:50:45,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:50:45,015 INFO L481 AbstractCegarLoop]: Abstraction has 15493 states and 19189 transitions. [2018-10-26 19:50:45,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:50:45,015 INFO L276 IsEmpty]: Start isEmpty. Operand 15493 states and 19189 transitions. [2018-10-26 19:50:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-10-26 19:50:45,019 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:50:45,020 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:45,020 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:50:45,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:50:45,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1745548543, now seen corresponding path program 1 times [2018-10-26 19:50:45,021 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:50:45,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:50:45,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:45,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:45,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 51 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:50:45,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:50:45,480 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 19:50:45,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:45,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:50:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:50:45,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:50:45,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 19:50:45,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:50:45,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:50:45,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:50:45,756 INFO L87 Difference]: Start difference. First operand 15493 states and 19189 transitions. Second operand 5 states. [2018-10-26 19:51:20,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:51:20,840 INFO L93 Difference]: Finished difference Result 70982 states and 95208 transitions. [2018-10-26 19:51:20,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:51:20,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2018-10-26 19:51:20,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:51:20,941 INFO L225 Difference]: With dead ends: 70982 [2018-10-26 19:51:20,941 INFO L226 Difference]: Without dead ends: 51391 [2018-10-26 19:51:20,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:51:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51391 states. [2018-10-26 19:51:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51391 to 51309. [2018-10-26 19:51:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51309 states. [2018-10-26 19:51:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51309 states to 51309 states and 60472 transitions. [2018-10-26 19:51:21,770 INFO L78 Accepts]: Start accepts. Automaton has 51309 states and 60472 transitions. Word has length 332 [2018-10-26 19:51:21,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:51:21,771 INFO L481 AbstractCegarLoop]: Abstraction has 51309 states and 60472 transitions. [2018-10-26 19:51:21,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:51:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand 51309 states and 60472 transitions. [2018-10-26 19:51:21,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-26 19:51:21,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:51:21,777 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:21,777 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:51:21,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:51:21,778 INFO L82 PathProgramCache]: Analyzing trace with hash 687775351, now seen corresponding path program 1 times [2018-10-26 19:51:21,778 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:51:21,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:51:21,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:51:21,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:51:21,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:51:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:51:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 51 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-26 19:51:22,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:51:22,347 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 19:51:22,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:51:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:51:22,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:51:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:51:22,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:51:22,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 19:51:22,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:51:22,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:51:22,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:51:22,630 INFO L87 Difference]: Start difference. First operand 51309 states and 60472 transitions. Second operand 4 states. [2018-10-26 19:51:44,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:51:44,376 INFO L93 Difference]: Finished difference Result 184884 states and 220618 transitions. [2018-10-26 19:51:44,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:51:44,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 342 [2018-10-26 19:51:44,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:51:44,549 INFO L225 Difference]: With dead ends: 184884 [2018-10-26 19:51:44,550 INFO L226 Difference]: Without dead ends: 134943 [2018-10-26 19:51:44,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 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 19:51:44,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134943 states. [2018-10-26 19:51:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134943 to 86821. [2018-10-26 19:51:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86821 states. [2018-10-26 19:51:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86821 states to 86821 states and 101826 transitions. [2018-10-26 19:51:45,825 INFO L78 Accepts]: Start accepts. Automaton has 86821 states and 101826 transitions. Word has length 342 [2018-10-26 19:51:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:51:45,826 INFO L481 AbstractCegarLoop]: Abstraction has 86821 states and 101826 transitions. [2018-10-26 19:51:45,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:51:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 86821 states and 101826 transitions. [2018-10-26 19:51:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2018-10-26 19:51:45,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:51:45,843 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, 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, 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, 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, 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 19:51:45,843 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:51:45,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:51:45,843 INFO L82 PathProgramCache]: Analyzing trace with hash 675887132, now seen corresponding path program 1 times [2018-10-26 19:51:45,843 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:51:45,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:51:45,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:51:45,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:51:45,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:51:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:51:46,838 WARN L179 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-26 19:51:47,085 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-26 19:51:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 453 proven. 4 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-10-26 19:51:47,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:51:47,652 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:51:47,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:51:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:51:47,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:51:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 457 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-10-26 19:51:48,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:51:48,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 19:51:48,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:51:48,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:51:48,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:51:48,620 INFO L87 Difference]: Start difference. First operand 86821 states and 101826 transitions. Second operand 5 states. [2018-10-26 19:52:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:52:11,207 INFO L93 Difference]: Finished difference Result 183205 states and 213687 transitions. [2018-10-26 19:52:11,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:52:11,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 645 [2018-10-26 19:52:11,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:52:11,315 INFO L225 Difference]: With dead ends: 183205 [2018-10-26 19:52:11,315 INFO L226 Difference]: Without dead ends: 93651 [2018-10-26 19:52:11,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 645 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:52:11,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93651 states. [2018-10-26 19:52:12,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93651 to 90917. [2018-10-26 19:52:12,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90917 states. [2018-10-26 19:52:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90917 states to 90917 states and 100330 transitions. [2018-10-26 19:52:12,236 INFO L78 Accepts]: Start accepts. Automaton has 90917 states and 100330 transitions. Word has length 645 [2018-10-26 19:52:12,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:52:12,236 INFO L481 AbstractCegarLoop]: Abstraction has 90917 states and 100330 transitions. [2018-10-26 19:52:12,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:52:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 90917 states and 100330 transitions. [2018-10-26 19:52:12,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-10-26 19:52:12,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:52:12,254 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 19:52:12,255 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:52:12,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:52:12,255 INFO L82 PathProgramCache]: Analyzing trace with hash 452939881, now seen corresponding path program 1 times [2018-10-26 19:52:12,255 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:52:12,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:52:12,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:52:12,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:52:12,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:52:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:52:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-26 19:52:13,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:52:13,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:52:13,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:52:13,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:52:13,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:52:13,093 INFO L87 Difference]: Start difference. First operand 90917 states and 100330 transitions. Second operand 5 states. [2018-10-26 19:52:35,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:52:35,837 INFO L93 Difference]: Finished difference Result 283097 states and 316959 transitions. [2018-10-26 19:52:35,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:52:35,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 729 [2018-10-26 19:52:35,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:52:36,076 INFO L225 Difference]: With dead ends: 283097 [2018-10-26 19:52:36,077 INFO L226 Difference]: Without dead ends: 193548 [2018-10-26 19:52:36,172 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 19:52:36,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193548 states. [2018-10-26 19:52:37,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193548 to 122342. [2018-10-26 19:52:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122342 states. [2018-10-26 19:52:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122342 states to 122342 states and 136739 transitions. [2018-10-26 19:52:38,062 INFO L78 Accepts]: Start accepts. Automaton has 122342 states and 136739 transitions. Word has length 729 [2018-10-26 19:52:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:52:38,063 INFO L481 AbstractCegarLoop]: Abstraction has 122342 states and 136739 transitions. [2018-10-26 19:52:38,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:52:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 122342 states and 136739 transitions. [2018-10-26 19:52:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2018-10-26 19:52:38,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:52:38,075 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:38,075 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:52:38,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:52:38,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1941590031, now seen corresponding path program 1 times [2018-10-26 19:52:38,076 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:52:38,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:52:38,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:52:38,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:52:38,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:52:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:52:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-26 19:52:39,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:52:39,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:52:39,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:52:39,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:52:39,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:52:39,072 INFO L87 Difference]: Start difference. First operand 122342 states and 136739 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 19:52:40,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:52:40,411 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:52:40,416 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:52:40,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:52:40 BoogieIcfgContainer [2018-10-26 19:52:40,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:52:40,418 INFO L168 Benchmark]: Toolchain (without parser) took 238605.83 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 112.2 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-26 19:52:40,419 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:52:40,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3272.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 987.0 MB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:52:40,420 INFO L168 Benchmark]: Boogie Procedure Inliner took 1221.82 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 863.5 MB). Free memory was 987.0 MB in the beginning and 2.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. [2018-10-26 19:52:40,421 INFO L168 Benchmark]: Boogie Preprocessor took 653.31 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 114.1 MB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:52:40,422 INFO L168 Benchmark]: RCFGBuilder took 17353.03 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 279.4 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -397.8 MB). Peak memory consumption was 849.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:52:40,423 INFO L168 Benchmark]: TraceAbstraction took 216099.83 ms. Allocated memory was 2.7 GB in the beginning and 4.1 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-26 19:52:40,428 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3272.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 987.0 MB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1221.82 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 863.5 MB). Free memory was 987.0 MB in the beginning and 2.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 653.31 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 114.1 MB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17353.03 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 279.4 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -397.8 MB). Peak memory consumption was 849.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216099.83 ms. Allocated memory was 2.7 GB in the beginning and 4.1 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 97). Cancelled while BasicCegarLoop was constructing difference of abstraction (122342states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1007 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 216.0s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 200.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9020 SDtfs, 44922 SDslu, 4183 SDs, 0 SdLazy, 95270 SolverSat, 18943 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 170.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1370 GetRequests, 1328 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122342occurred in iteration=7, 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: 5.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 127708 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 4685 NumberOfCodeBlocks, 4685 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4674 ConstructedInterpolants, 0 QuantifiedInterpolants, 7721705 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1613 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 2659/2732 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown