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_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:09:58,235 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:09:58,237 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:09:58,254 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:09:58,254 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:09:58,255 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:09:58,257 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:09:58,260 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:09:58,262 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:09:58,262 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:09:58,265 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:09:58,266 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:09:58,267 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:09:58,268 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:09:58,269 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:09:58,270 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:09:58,271 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:09:58,272 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:09:58,274 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:09:58,276 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:09:58,277 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:09:58,278 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:09:58,281 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:09:58,281 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:09:58,281 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:09:58,282 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:09:58,283 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:09:58,284 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:09:58,285 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:09:58,286 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:09:58,286 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:09:58,287 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:09:58,287 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:09:58,287 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:09:58,288 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:09:58,289 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:09:58,290 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 22:09:58,314 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:09:58,314 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:09:58,315 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:09:58,315 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:09:58,316 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:09:58,316 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:09:58,316 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:09:58,317 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:09:58,317 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:09:58,317 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:09:58,317 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:09:58,317 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:09:58,318 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:09:58,319 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:09:58,319 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:09:58,319 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:09:58,320 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:09:58,320 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:09:58,320 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:09:58,320 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:09:58,320 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:09:58,321 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:09:58,322 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:09:58,322 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:09:58,322 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:09:58,322 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:09:58,323 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:09:58,323 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:09:58,373 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:09:58,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:09:58,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:09:58,392 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:09:58,393 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:09:58,394 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label23_true-unreach-call.c [2018-10-26 22:09:58,460 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/93e2978c2/7dc8c96469214a62af4ce8991e2044d4/FLAG3c0135682 [2018-10-26 22:09:59,392 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:09:59,393 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label23_true-unreach-call.c [2018-10-26 22:09:59,438 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/93e2978c2/7dc8c96469214a62af4ce8991e2044d4/FLAG3c0135682 [2018-10-26 22:09:59,452 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/93e2978c2/7dc8c96469214a62af4ce8991e2044d4 [2018-10-26 22:09:59,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:09:59,465 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:09:59,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:09:59,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:09:59,471 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:09:59,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:09:59" (1/1) ... [2018-10-26 22:09:59,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:09:59, skipping insertion in model container [2018-10-26 22:09:59,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:09:59" (1/1) ... [2018-10-26 22:09:59,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:09:59,713 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:10:01,567 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:10:01,572 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:10:02,618 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:10:02,678 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:10:02,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02 WrapperNode [2018-10-26 22:10:02,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:10:02,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:10:02,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:10:02,682 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:10:02,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02" (1/1) ... [2018-10-26 22:10:02,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02" (1/1) ... [2018-10-26 22:10:03,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:10:03,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:10:03,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:10:03,843 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:10:03,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02" (1/1) ... [2018-10-26 22:10:03,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02" (1/1) ... [2018-10-26 22:10:03,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02" (1/1) ... [2018-10-26 22:10:03,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02" (1/1) ... [2018-10-26 22:10:04,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02" (1/1) ... [2018-10-26 22:10:04,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02" (1/1) ... [2018-10-26 22:10:04,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02" (1/1) ... [2018-10-26 22:10:04,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:10:04,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:10:04,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:10:04,911 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:10:04,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02" (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 22:10:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 22:10:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:10:04,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:10:24,630 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:10:24,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:10:24 BoogieIcfgContainer [2018-10-26 22:10:24,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:10:24,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:10:24,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:10:24,638 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:10:24,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:09:59" (1/3) ... [2018-10-26 22:10:24,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3b2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:10:24, skipping insertion in model container [2018-10-26 22:10:24,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:02" (2/3) ... [2018-10-26 22:10:24,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3b2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:10:24, skipping insertion in model container [2018-10-26 22:10:24,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:10:24" (3/3) ... [2018-10-26 22:10:24,643 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label23_true-unreach-call.c [2018-10-26 22:10:24,653 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:10:24,664 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:10:24,683 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:10:24,739 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:10:24,740 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:10:24,740 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:10:24,740 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:10:24,741 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:10:24,741 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:10:24,741 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:10:24,741 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:10:24,741 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:10:24,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 22:10:24,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 22:10:24,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:10:24,800 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:10:24,802 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:10:24,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:10:24,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-10-26 22:10:24,812 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:10:24,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:10:24,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:24,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:10:24,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:10:25,309 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 22:10:25,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:10:25,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:10:25,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:10:25,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:10:25,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:10:25,337 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 22:10:54,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:10:54,006 INFO L93 Difference]: Finished difference Result 6431 states and 12286 transitions. [2018-10-26 22:10:54,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:10:54,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-26 22:10:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:10:54,062 INFO L225 Difference]: With dead ends: 6431 [2018-10-26 22:10:54,062 INFO L226 Difference]: Without dead ends: 4675 [2018-10-26 22:10:54,074 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 22:10:54,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2018-10-26 22:10:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4581. [2018-10-26 22:10:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4581 states. [2018-10-26 22:10:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 7890 transitions. [2018-10-26 22:10:54,308 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 7890 transitions. Word has length 53 [2018-10-26 22:10:54,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:10:54,308 INFO L481 AbstractCegarLoop]: Abstraction has 4581 states and 7890 transitions. [2018-10-26 22:10:54,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:10:54,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 7890 transitions. [2018-10-26 22:10:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-26 22:10:54,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:10:54,316 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, 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] [2018-10-26 22:10:54,316 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:10:54,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:10:54,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1222712374, now seen corresponding path program 1 times [2018-10-26 22:10:54,317 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:10:54,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:10:54,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:54,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:10:54,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:10:54,802 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:10:55,316 WARN L179 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-26 22:10:55,744 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-10-26 22:10:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:10:56,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:10:56,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:10:56,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:10:56,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:10:56,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:10:56,103 INFO L87 Difference]: Start difference. First operand 4581 states and 7890 transitions. Second operand 6 states. [2018-10-26 22:10:56,286 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-26 22:11:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:11:26,349 INFO L93 Difference]: Finished difference Result 17384 states and 28714 transitions. [2018-10-26 22:11:26,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:11:26,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-26 22:11:26,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:11:26,422 INFO L225 Difference]: With dead ends: 17384 [2018-10-26 22:11:26,422 INFO L226 Difference]: Without dead ends: 12805 [2018-10-26 22:11:26,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 3 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 22:11:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12805 states. [2018-10-26 22:11:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12805 to 11430. [2018-10-26 22:11:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2018-10-26 22:11:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 17329 transitions. [2018-10-26 22:11:26,674 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 17329 transitions. Word has length 125 [2018-10-26 22:11:26,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:11:26,674 INFO L481 AbstractCegarLoop]: Abstraction has 11430 states and 17329 transitions. [2018-10-26 22:11:26,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:11:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 17329 transitions. [2018-10-26 22:11:26,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-26 22:11:26,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:11:26,684 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:11:26,684 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:11:26,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:11:26,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1620575188, now seen corresponding path program 1 times [2018-10-26 22:11:26,685 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:11:26,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:11:26,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:26,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:11:26,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:11:27,259 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:11:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-26 22:11:27,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:11:27,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:11:27,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:11:27,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:11:27,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:11:27,685 INFO L87 Difference]: Start difference. First operand 11430 states and 17329 transitions. Second operand 7 states. [2018-10-26 22:12:05,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:12:05,901 INFO L93 Difference]: Finished difference Result 35166 states and 54823 transitions. [2018-10-26 22:12:05,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:12:05,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2018-10-26 22:12:05,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:12:05,979 INFO L225 Difference]: With dead ends: 35166 [2018-10-26 22:12:05,980 INFO L226 Difference]: Without dead ends: 23738 [2018-10-26 22:12:05,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:12:06,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23738 states. [2018-10-26 22:12:06,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23738 to 19636. [2018-10-26 22:12:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19636 states. [2018-10-26 22:12:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19636 states to 19636 states and 26064 transitions. [2018-10-26 22:12:06,406 INFO L78 Accepts]: Start accepts. Automaton has 19636 states and 26064 transitions. Word has length 349 [2018-10-26 22:12:06,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:12:06,407 INFO L481 AbstractCegarLoop]: Abstraction has 19636 states and 26064 transitions. [2018-10-26 22:12:06,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:12:06,407 INFO L276 IsEmpty]: Start isEmpty. Operand 19636 states and 26064 transitions. [2018-10-26 22:12:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-26 22:12:06,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:12:06,415 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:12:06,417 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:12:06,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:12:06,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1938607278, now seen corresponding path program 1 times [2018-10-26 22:12:06,418 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:12:06,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:12:06,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:06,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:12:06,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:12:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 101 proven. 4 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-26 22:12:07,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:12:07,107 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 22:12:07,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:12:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:12:07,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:12:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:12:07,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:12:07,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 22:12:07,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:12:07,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:12:07,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:12:07,540 INFO L87 Difference]: Start difference. First operand 19636 states and 26064 transitions. Second operand 5 states. [2018-10-26 22:12:49,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:12:49,364 INFO L93 Difference]: Finished difference Result 103731 states and 147636 transitions. [2018-10-26 22:12:49,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:12:49,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 377 [2018-10-26 22:12:49,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:12:49,513 INFO L225 Difference]: With dead ends: 103731 [2018-10-26 22:12:49,513 INFO L226 Difference]: Without dead ends: 85463 [2018-10-26 22:12:49,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 378 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 22:12:49,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85463 states. [2018-10-26 22:12:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85463 to 55148. [2018-10-26 22:12:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55148 states. [2018-10-26 22:12:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55148 states to 55148 states and 69979 transitions. [2018-10-26 22:12:50,749 INFO L78 Accepts]: Start accepts. Automaton has 55148 states and 69979 transitions. Word has length 377 [2018-10-26 22:12:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:12:50,750 INFO L481 AbstractCegarLoop]: Abstraction has 55148 states and 69979 transitions. [2018-10-26 22:12:50,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:12:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 55148 states and 69979 transitions. [2018-10-26 22:12:50,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-10-26 22:12:50,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:12:50,760 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, 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, 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] [2018-10-26 22:12:50,761 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:12:50,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:12:50,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1789369963, now seen corresponding path program 1 times [2018-10-26 22:12:50,761 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:12:50,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:12:50,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:50,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:12:50,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:12:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 238 proven. 65 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-26 22:12:51,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:12:51,339 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 22:12:51,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:12:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:12:51,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:12:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-26 22:12:51,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:12:51,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 22:12:51,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:12:51,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:12:51,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:12:51,742 INFO L87 Difference]: Start difference. First operand 55148 states and 69979 transitions. Second operand 5 states. [2018-10-26 22:13:27,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:13:27,774 INFO L93 Difference]: Finished difference Result 222669 states and 295346 transitions. [2018-10-26 22:13:27,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:13:27,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 429 [2018-10-26 22:13:27,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:13:27,997 INFO L225 Difference]: With dead ends: 222669 [2018-10-26 22:13:27,997 INFO L226 Difference]: Without dead ends: 163423 [2018-10-26 22:13:28,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 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 22:13:28,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163423 states. [2018-10-26 22:13:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163423 to 160599. [2018-10-26 22:13:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160599 states. [2018-10-26 22:13:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160599 states to 160599 states and 188063 transitions. [2018-10-26 22:13:29,935 INFO L78 Accepts]: Start accepts. Automaton has 160599 states and 188063 transitions. Word has length 429 [2018-10-26 22:13:29,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:13:29,936 INFO L481 AbstractCegarLoop]: Abstraction has 160599 states and 188063 transitions. [2018-10-26 22:13:29,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:13:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 160599 states and 188063 transitions. [2018-10-26 22:13:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2018-10-26 22:13:29,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:13:29,962 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:29,962 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:13:29,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:13:29,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1041195184, now seen corresponding path program 1 times [2018-10-26 22:13:29,963 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:13:29,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:13:29,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:29,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:13:29,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:13:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 101 proven. 72 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2018-10-26 22:13:31,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:13:31,787 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 22:13:31,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:13:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:13:32,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:13:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-10-26 22:13:32,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:13:32,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 22:13:32,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:13:32,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:13:32,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:13:32,447 INFO L87 Difference]: Start difference. First operand 160599 states and 188063 transitions. Second operand 5 states. [2018-10-26 22:13:51,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:13:51,340 INFO L93 Difference]: Finished difference Result 397694 states and 470256 transitions. [2018-10-26 22:13:51,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:13:51,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 775 [2018-10-26 22:13:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:13:51,714 INFO L225 Difference]: With dead ends: 397694 [2018-10-26 22:13:51,714 INFO L226 Difference]: Without dead ends: 238463 [2018-10-26 22:13:51,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 774 SyntacticMatches, 1 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 22:13:52,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238463 states. Received shutdown request... [2018-10-26 22:13:54,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238463 to 237090. [2018-10-26 22:13:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237090 states. [2018-10-26 22:13:54,450 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:13:54,455 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:13:54,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:13:54 BoogieIcfgContainer [2018-10-26 22:13:54,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:13:54,456 INFO L168 Benchmark]: Toolchain (without parser) took 234991.63 ms. Allocated memory was 1.6 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-26 22:13:54,457 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:13:54,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3212.13 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:13:54,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 1162.99 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 871.4 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-26 22:13:54,459 INFO L168 Benchmark]: Boogie Preprocessor took 1068.10 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: 94.7 MB). Peak memory consumption was 94.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:13:54,460 INFO L168 Benchmark]: RCFGBuilder took 19719.70 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 274.2 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -369.8 MB). Peak memory consumption was 883.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:13:54,461 INFO L168 Benchmark]: TraceAbstraction took 209821.41 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -2.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-26 22:13:54,467 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 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3212.13 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1162.99 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 871.4 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1068.10 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: 94.7 MB). Peak memory consumption was 94.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 19719.70 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 274.2 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -369.8 MB). Peak memory consumption was 883.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209821.41 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -2.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 172). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 209.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 195.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6956 SDtfs, 45204 SDslu, 3671 SDs, 0 SdLazy, 80291 SolverSat, 28039 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 166.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1620 GetRequests, 1585 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160599occurred 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: 6.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 38710 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 3689 NumberOfCodeBlocks, 3689 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3680 ConstructedInterpolants, 0 QuantifiedInterpolants, 6674394 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1881 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 1849/1990 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown