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/Problem17_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:27:40,185 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:27:40,189 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:27:40,205 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:27:40,205 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:27:40,206 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:27:40,208 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:27:40,210 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:27:40,213 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:27:40,219 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:27:40,220 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:27:40,221 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:27:40,221 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:27:40,222 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:27:40,224 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:27:40,224 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:27:40,225 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:27:40,227 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:27:40,229 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:27:40,231 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:27:40,232 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:27:40,233 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:27:40,235 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:27:40,236 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:27:40,236 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:27:40,237 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:27:40,238 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:27:40,239 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:27:40,239 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:27:40,241 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:27:40,241 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:27:40,242 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:27:40,244 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:27:40,268 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:27:40,268 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:27:40,269 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:27:40,269 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:27:40,270 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:27:40,270 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:27:40,270 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:27:40,270 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:27:40,271 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:27:40,271 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:27:40,271 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:27:40,271 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:27:40,271 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:27:40,271 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:27:40,272 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:27:40,272 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:27:40,272 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:27:40,272 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:27:40,272 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:27:40,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:27:40,273 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:27:40,273 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:27:40,273 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:27:40,273 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:27:40,274 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:27:40,274 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:27:40,274 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:27:40,274 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:27:40,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:27:40,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:27:40,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:27:40,344 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:27:40,345 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:27:40,345 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label35_false-unreach-call.c [2018-10-23 18:27:40,411 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/88b35babb/197e62ec224c4e4eadb539c2184e68cd/FLAG59ad69533 [2018-10-23 18:27:41,188 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:27:41,189 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label35_false-unreach-call.c [2018-10-23 18:27:41,226 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/88b35babb/197e62ec224c4e4eadb539c2184e68cd/FLAG59ad69533 [2018-10-23 18:27:41,249 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/88b35babb/197e62ec224c4e4eadb539c2184e68cd [2018-10-23 18:27:41,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:27:41,263 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:27:41,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:27:41,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:27:41,271 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:27:41,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:27:41" (1/1) ... [2018-10-23 18:27:41,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61cf1b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:41, skipping insertion in model container [2018-10-23 18:27:41,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:27:41" (1/1) ... [2018-10-23 18:27:41,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:27:41,409 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:27:42,346 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:27:42,351 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:27:42,734 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:27:42,758 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:27:42,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42 WrapperNode [2018-10-23 18:27:42,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:27:42,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:27:42,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:27:42,760 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:27:42,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42" (1/1) ... [2018-10-23 18:27:42,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42" (1/1) ... [2018-10-23 18:27:43,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:27:43,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:27:43,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:27:43,305 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:27:43,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42" (1/1) ... [2018-10-23 18:27:43,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42" (1/1) ... [2018-10-23 18:27:43,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42" (1/1) ... [2018-10-23 18:27:43,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42" (1/1) ... [2018-10-23 18:27:43,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42" (1/1) ... [2018-10-23 18:27:43,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42" (1/1) ... [2018-10-23 18:27:43,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42" (1/1) ... [2018-10-23 18:27:43,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:27:43,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:27:43,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:27:43,689 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:27:43,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:27:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:27:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:27:43,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:27:55,248 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:27:55,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:27:55 BoogieIcfgContainer [2018-10-23 18:27:55,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:27:55,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:27:55,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:27:55,254 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:27:55,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:27:41" (1/3) ... [2018-10-23 18:27:55,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570ba676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:27:55, skipping insertion in model container [2018-10-23 18:27:55,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:42" (2/3) ... [2018-10-23 18:27:55,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570ba676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:27:55, skipping insertion in model container [2018-10-23 18:27:55,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:27:55" (3/3) ... [2018-10-23 18:27:55,258 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label35_false-unreach-call.c [2018-10-23 18:27:55,268 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:27:55,278 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:27:55,296 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:27:55,338 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:27:55,338 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:27:55,339 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:27:55,339 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:27:55,339 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:27:55,339 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:27:55,339 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:27:55,339 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:27:55,340 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:27:55,375 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 18:27:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-23 18:27:55,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:27:55,388 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:27:55,391 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:27:55,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:27:55,397 INFO L82 PathProgramCache]: Analyzing trace with hash 150940466, now seen corresponding path program 1 times [2018-10-23 18:27:55,399 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:27:55,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:27:55,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:55,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:27:55,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:27:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:27:55,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:27:55,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:27:55,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:27:55,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:27:55,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:27:55,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:27:55,726 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 18:28:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:04,593 INFO L93 Difference]: Finished difference Result 2078 states and 3883 transitions. [2018-10-23 18:28:04,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:28:04,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-23 18:28:04,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:04,630 INFO L225 Difference]: With dead ends: 2078 [2018-10-23 18:28:04,630 INFO L226 Difference]: Without dead ends: 1480 [2018-10-23 18:28:04,638 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 [2018-10-23 18:28:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2018-10-23 18:28:04,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1019. [2018-10-23 18:28:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2018-10-23 18:28:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1572 transitions. [2018-10-23 18:28:04,782 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1572 transitions. Word has length 8 [2018-10-23 18:28:04,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:04,783 INFO L481 AbstractCegarLoop]: Abstraction has 1019 states and 1572 transitions. [2018-10-23 18:28:04,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:28:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1572 transitions. [2018-10-23 18:28:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-23 18:28:04,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:04,788 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:28:04,788 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:04,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:04,789 INFO L82 PathProgramCache]: Analyzing trace with hash 249979295, now seen corresponding path program 1 times [2018-10-23 18:28:04,789 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:04,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:04,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:04,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:04,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:28:05,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:28:05,219 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 [2018-10-23 18:28:05,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:05,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:28:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:28:05,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:28:05,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 18:28:05,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:28:05,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:28:05,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:28:05,503 INFO L87 Difference]: Start difference. First operand 1019 states and 1572 transitions. Second operand 5 states. [2018-10-23 18:28:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:19,000 INFO L93 Difference]: Finished difference Result 3857 states and 6008 transitions. [2018-10-23 18:28:19,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:28:19,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2018-10-23 18:28:19,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:19,017 INFO L225 Difference]: With dead ends: 3857 [2018-10-23 18:28:19,017 INFO L226 Difference]: Without dead ends: 2840 [2018-10-23 18:28:19,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:28:19,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2018-10-23 18:28:19,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2830. [2018-10-23 18:28:19,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2830 states. [2018-10-23 18:28:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 4121 transitions. [2018-10-23 18:28:19,084 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 4121 transitions. Word has length 79 [2018-10-23 18:28:19,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:19,085 INFO L481 AbstractCegarLoop]: Abstraction has 2830 states and 4121 transitions. [2018-10-23 18:28:19,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:28:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 4121 transitions. [2018-10-23 18:28:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-23 18:28:19,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:19,089 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:28:19,090 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:19,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:19,090 INFO L82 PathProgramCache]: Analyzing trace with hash 311195426, now seen corresponding path program 1 times [2018-10-23 18:28:19,090 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:19,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:19,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:19,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:19,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:28:19,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:28:19,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:28:19,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:28:19,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:28:19,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:28:19,276 INFO L87 Difference]: Start difference. First operand 2830 states and 4121 transitions. Second operand 4 states. [2018-10-23 18:28:27,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:27,784 INFO L93 Difference]: Finished difference Result 9945 states and 14829 transitions. [2018-10-23 18:28:27,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:28:27,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2018-10-23 18:28:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:27,829 INFO L225 Difference]: With dead ends: 9945 [2018-10-23 18:28:27,829 INFO L226 Difference]: Without dead ends: 7117 [2018-10-23 18:28:27,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:28:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7117 states. [2018-10-23 18:28:27,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7117 to 6673. [2018-10-23 18:28:27,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6673 states. [2018-10-23 18:28:27,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6673 states to 6673 states and 8798 transitions. [2018-10-23 18:28:27,966 INFO L78 Accepts]: Start accepts. Automaton has 6673 states and 8798 transitions. Word has length 101 [2018-10-23 18:28:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:27,969 INFO L481 AbstractCegarLoop]: Abstraction has 6673 states and 8798 transitions. [2018-10-23 18:28:27,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:28:27,969 INFO L276 IsEmpty]: Start isEmpty. Operand 6673 states and 8798 transitions. [2018-10-23 18:28:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-23 18:28:27,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:27,982 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:28:27,984 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:27,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:27,984 INFO L82 PathProgramCache]: Analyzing trace with hash 54166844, now seen corresponding path program 1 times [2018-10-23 18:28:27,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:27,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:27,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:27,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:27,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 11 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:28:28,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:28:28,408 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 [2018-10-23 18:28:28,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:28,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:28:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-10-23 18:28:28,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:28:28,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 18:28:28,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:28:28,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:28:28,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:28:28,579 INFO L87 Difference]: Start difference. First operand 6673 states and 8798 transitions. Second operand 5 states. [2018-10-23 18:28:39,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:39,530 INFO L93 Difference]: Finished difference Result 29977 states and 41334 transitions. [2018-10-23 18:28:39,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:28:39,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-10-23 18:28:39,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:39,614 INFO L225 Difference]: With dead ends: 29977 [2018-10-23 18:28:39,615 INFO L226 Difference]: Without dead ends: 19851 [2018-10-23 18:28:39,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:28:39,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19851 states. [2018-10-23 18:28:39,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19851 to 19849. [2018-10-23 18:28:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19849 states. [2018-10-23 18:28:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19849 states to 19849 states and 22597 transitions. [2018-10-23 18:28:40,007 INFO L78 Accepts]: Start accepts. Automaton has 19849 states and 22597 transitions. Word has length 145 [2018-10-23 18:28:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:40,007 INFO L481 AbstractCegarLoop]: Abstraction has 19849 states and 22597 transitions. [2018-10-23 18:28:40,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:28:40,008 INFO L276 IsEmpty]: Start isEmpty. Operand 19849 states and 22597 transitions. [2018-10-23 18:28:40,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-23 18:28:40,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:40,011 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:28:40,011 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:40,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:40,012 INFO L82 PathProgramCache]: Analyzing trace with hash 981388283, now seen corresponding path program 1 times [2018-10-23 18:28:40,012 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:40,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:40,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:40,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:40,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:28:40,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:28:40,457 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 [2018-10-23 18:28:40,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:40,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:28:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 18:28:40,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:28:40,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-10-23 18:28:40,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:28:40,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:28:40,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:28:40,648 INFO L87 Difference]: Start difference. First operand 19849 states and 22597 transitions. Second operand 8 states. [2018-10-23 18:28:46,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:46,856 INFO L93 Difference]: Finished difference Result 40618 states and 46318 transitions. [2018-10-23 18:28:46,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:28:46,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2018-10-23 18:28:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:46,893 INFO L225 Difference]: With dead ends: 40618 [2018-10-23 18:28:46,894 INFO L226 Difference]: Without dead ends: 20771 [2018-10-23 18:28:46,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:28:46,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20771 states. [2018-10-23 18:28:47,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20771 to 19842. [2018-10-23 18:28:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19842 states. [2018-10-23 18:28:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19842 states to 19842 states and 22167 transitions. [2018-10-23 18:28:47,196 INFO L78 Accepts]: Start accepts. Automaton has 19842 states and 22167 transitions. Word has length 241 [2018-10-23 18:28:47,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:47,197 INFO L481 AbstractCegarLoop]: Abstraction has 19842 states and 22167 transitions. [2018-10-23 18:28:47,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 18:28:47,198 INFO L276 IsEmpty]: Start isEmpty. Operand 19842 states and 22167 transitions. [2018-10-23 18:28:47,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-23 18:28:47,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:47,205 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:28:47,205 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:47,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:47,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2008932877, now seen corresponding path program 1 times [2018-10-23 18:28:47,206 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:47,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:47,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:47,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:47,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-23 18:28:47,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:28:47,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:28:47,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:28:47,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:28:47,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:28:47,515 INFO L87 Difference]: Start difference. First operand 19842 states and 22167 transitions. Second operand 3 states. [2018-10-23 18:28:51,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:28:51,179 INFO L93 Difference]: Finished difference Result 46074 states and 51757 transitions. [2018-10-23 18:28:51,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:28:51,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 309 [2018-10-23 18:28:51,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:28:51,215 INFO L225 Difference]: With dead ends: 46074 [2018-10-23 18:28:51,216 INFO L226 Difference]: Without dead ends: 24918 [2018-10-23 18:28:51,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:28:51,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24918 states. [2018-10-23 18:28:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24918 to 22359. [2018-10-23 18:28:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22359 states. [2018-10-23 18:28:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22359 states to 22359 states and 24671 transitions. [2018-10-23 18:28:51,827 INFO L78 Accepts]: Start accepts. Automaton has 22359 states and 24671 transitions. Word has length 309 [2018-10-23 18:28:51,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:28:51,827 INFO L481 AbstractCegarLoop]: Abstraction has 22359 states and 24671 transitions. [2018-10-23 18:28:51,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:28:51,828 INFO L276 IsEmpty]: Start isEmpty. Operand 22359 states and 24671 transitions. [2018-10-23 18:28:51,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2018-10-23 18:28:51,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:51,849 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:28:51,849 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:51,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:51,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1796767228, now seen corresponding path program 1 times [2018-10-23 18:28:51,850 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:51,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:51,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:51,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:51,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:52,343 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 18:28:52,773 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-10-23 18:28:53,123 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 9 [2018-10-23 18:28:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 243 proven. 83 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 18:28:53,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:28:53,436 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:28:53,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:53,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:29:03,146 WARN L179 SmtUtils]: Spent 9.49 s on a formula simplification. DAG size of input: 120 DAG size of output: 23 [2018-10-23 18:29:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-10-23 18:29:03,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:29:03,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 18:29:03,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:29:03,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:29:03,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:29:03,326 INFO L87 Difference]: Start difference. First operand 22359 states and 24671 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 18:32:06,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:32:06,556 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:32:06,563 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:32:06,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:32:06 BoogieIcfgContainer [2018-10-23 18:32:06,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:32:06,564 INFO L168 Benchmark]: Toolchain (without parser) took 265302.45 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -941.0 MB). Peak memory consumption was 636.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:32:06,565 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:32:06,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1494.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:32:06,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 544.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.8 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:32:06,568 INFO L168 Benchmark]: Boogie Preprocessor took 383.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. [2018-10-23 18:32:06,568 INFO L168 Benchmark]: RCFGBuilder took 11560.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 481.6 MB). Peak memory consumption was 481.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:32:06,569 INFO L168 Benchmark]: TraceAbstraction took 251312.56 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 783.3 MB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -683.5 MB). Peak memory consumption was 99.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:32:06,574 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1494.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 544.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.8 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 383.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11560.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 481.6 MB). Peak memory consumption was 481.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251312.56 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 783.3 MB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -683.5 MB). Peak memory consumption was 99.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 29]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 29). Cancelled while BasicCegarLoop was constructing difference of abstraction (22359states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (32044 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 251.2s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 235.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3172 SDtfs, 11288 SDslu, 1472 SDs, 0 SdLazy, 22338 SolverSat, 5589 SolverUnsat, 82 SolverUnknown, 0 SolverNotchecked, 226.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 987 GetRequests, 958 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22359occurred in iteration=6, 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: 1.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 4405 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 2326 NumberOfCodeBlocks, 2326 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2315 ConstructedInterpolants, 6 QuantifiedInterpolants, 2637325 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1310 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 1096/1254 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown