java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:04:30,176 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:04:30,178 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:04:30,190 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:04:30,190 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:04:30,191 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:04:30,193 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:04:30,195 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:04:30,197 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:04:30,198 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:04:30,199 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:04:30,200 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:04:30,201 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:04:30,205 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:04:30,206 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:04:30,207 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:04:30,208 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:04:30,210 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:04:30,212 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:04:30,214 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:04:30,215 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:04:30,217 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:04:30,220 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 22:04:30,230 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:04:30,255 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:04:30,256 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:04:30,256 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:04:30,259 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:04:30,260 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:04:30,260 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:04:30,260 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:04:30,260 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:04:30,261 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:04:30,261 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:04:30,261 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:04:30,261 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:04:30,261 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:04:30,261 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:04:30,262 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:04:30,262 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:04:30,262 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:04:30,262 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:04:30,263 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:04:30,264 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:04:30,264 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:04:30,264 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:04:30,265 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:04:30,265 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:04:30,266 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:04:30,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:04:30,266 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:04:30,266 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:04:30,331 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:04:30,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:04:30,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:04:30,353 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:04:30,353 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:04:30,355 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label57_true-unreach-call.c [2018-11-06 22:04:30,420 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb4077a8/3b35622b84ed454baa3e3c2d0a81224a/FLAGee0a89fd0 [2018-11-06 22:04:31,322 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:04:31,323 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label57_true-unreach-call.c [2018-11-06 22:04:31,365 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb4077a8/3b35622b84ed454baa3e3c2d0a81224a/FLAGee0a89fd0 [2018-11-06 22:04:31,380 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb4077a8/3b35622b84ed454baa3e3c2d0a81224a [2018-11-06 22:04:31,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:04:31,394 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:04:31,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:04:31,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:04:31,399 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:04:31,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:31" (1/1) ... [2018-11-06 22:04:31,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cedeeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:31, skipping insertion in model container [2018-11-06 22:04:31,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:31" (1/1) ... [2018-11-06 22:04:31,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:04:31,669 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:04:33,690 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:04:33,695 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:04:34,872 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:04:34,933 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:04:34,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34 WrapperNode [2018-11-06 22:04:34,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:04:34,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:04:34,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:04:34,935 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:04:34,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34" (1/1) ... [2018-11-06 22:04:35,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34" (1/1) ... [2018-11-06 22:04:36,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:04:36,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:04:36,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:04:36,070 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:04:36,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34" (1/1) ... [2018-11-06 22:04:36,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34" (1/1) ... [2018-11-06 22:04:36,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34" (1/1) ... [2018-11-06 22:04:36,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34" (1/1) ... [2018-11-06 22:04:36,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34" (1/1) ... [2018-11-06 22:04:36,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34" (1/1) ... [2018-11-06 22:04:36,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34" (1/1) ... [2018-11-06 22:04:36,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:04:36,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:04:36,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:04:36,779 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:04:36,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 22:04:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 22:04:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:04:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:04:52,503 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:04:52,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:52 BoogieIcfgContainer [2018-11-06 22:04:52,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:04:52,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:04:52,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:04:52,508 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:04:52,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:31" (1/3) ... [2018-11-06 22:04:52,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27290ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:52, skipping insertion in model container [2018-11-06 22:04:52,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:34" (2/3) ... [2018-11-06 22:04:52,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27290ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:52, skipping insertion in model container [2018-11-06 22:04:52,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:52" (3/3) ... [2018-11-06 22:04:52,512 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label57_true-unreach-call.c [2018-11-06 22:04:52,521 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:04:52,531 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:04:52,548 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:04:52,595 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:04:52,596 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:04:52,596 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:04:52,596 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:04:52,596 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:04:52,596 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:04:52,596 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:04:52,596 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:04:52,597 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:04:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 22:04:52,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-06 22:04:52,668 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:04:52,670 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, 1, 1, 1, 1] [2018-11-06 22:04:52,672 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:04:52,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:04:52,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1848943538, now seen corresponding path program 1 times [2018-11-06 22:04:52,681 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:04:52,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:04:52,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:52,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:04:52,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:04:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:04:53,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:04:53,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:04:53,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:04:53,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:04:53,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:04:53,213 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 22:05:12,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:05:12,925 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-11-06 22:05:12,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:05:12,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-11-06 22:05:12,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:05:12,989 INFO L225 Difference]: With dead ends: 6419 [2018-11-06 22:05:12,989 INFO L226 Difference]: Without dead ends: 4663 [2018-11-06 22:05:13,005 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:05:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-11-06 22:05:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-11-06 22:05:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-11-06 22:05:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-11-06 22:05:13,222 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 57 [2018-11-06 22:05:13,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:05:13,223 INFO L480 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-11-06 22:05:13,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:05:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-11-06 22:05:13,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-06 22:05:13,233 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:05:13,234 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, 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] [2018-11-06 22:05:13,234 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:05:13,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:05:13,235 INFO L82 PathProgramCache]: Analyzing trace with hash 412483048, now seen corresponding path program 1 times [2018-11-06 22:05:13,235 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:05:13,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:05:13,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:13,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:05:13,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:05:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:05:13,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:05:13,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:05:13,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:05:13,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:05:13,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:05:13,677 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-11-06 22:05:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:05:34,603 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-11-06 22:05:34,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:05:34,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-11-06 22:05:34,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:05:34,668 INFO L225 Difference]: With dead ends: 17564 [2018-11-06 22:05:34,668 INFO L226 Difference]: Without dead ends: 12993 [2018-11-06 22:05:34,677 INFO L604 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 [2018-11-06 22:05:34,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-11-06 22:05:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-11-06 22:05:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-11-06 22:05:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-11-06 22:05:34,878 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 141 [2018-11-06 22:05:34,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:05:34,878 INFO L480 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-11-06 22:05:34,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:05:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-11-06 22:05:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-06 22:05:34,892 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:05:34,892 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, 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] [2018-11-06 22:05:34,893 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:05:34,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:05:34,893 INFO L82 PathProgramCache]: Analyzing trace with hash -331695523, now seen corresponding path program 1 times [2018-11-06 22:05:34,893 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:05:34,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:05:34,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:34,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:05:34,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:05:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:05:35,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:05:35,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:05:35,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:05:35,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:05:35,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:05:35,132 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-11-06 22:05:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:05:51,436 INFO L93 Difference]: Finished difference Result 34022 states and 57203 transitions. [2018-11-06 22:05:51,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:05:51,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2018-11-06 22:05:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:05:51,509 INFO L225 Difference]: With dead ends: 34022 [2018-11-06 22:05:51,509 INFO L226 Difference]: Without dead ends: 25352 [2018-11-06 22:05:51,521 INFO L604 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 [2018-11-06 22:05:51,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25352 states. [2018-11-06 22:05:51,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25352 to 25338. [2018-11-06 22:05:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2018-11-06 22:05:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 36988 transitions. [2018-11-06 22:05:51,880 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 36988 transitions. Word has length 181 [2018-11-06 22:05:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:05:51,880 INFO L480 AbstractCegarLoop]: Abstraction has 25338 states and 36988 transitions. [2018-11-06 22:05:51,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:05:51,881 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 36988 transitions. [2018-11-06 22:05:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-11-06 22:05:51,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:05:51,886 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, 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, 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] [2018-11-06 22:05:51,886 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:05:51,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:05:51,887 INFO L82 PathProgramCache]: Analyzing trace with hash 852496620, now seen corresponding path program 1 times [2018-11-06 22:05:51,887 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:05:51,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:05:51,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:51,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:05:51,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:05:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-11-06 22:05:52,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:05:52,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:05:52,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:05:52,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:05:52,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:05:52,463 INFO L87 Difference]: Start difference. First operand 25338 states and 36988 transitions. Second operand 4 states. [2018-11-06 22:06:07,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:06:07,372 INFO L93 Difference]: Finished difference Result 93031 states and 135352 transitions. [2018-11-06 22:06:07,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:06:07,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2018-11-06 22:06:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:06:07,496 INFO L225 Difference]: With dead ends: 93031 [2018-11-06 22:06:07,496 INFO L226 Difference]: Without dead ends: 67695 [2018-11-06 22:06:07,533 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:06:07,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2018-11-06 22:06:08,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 64956. [2018-11-06 22:06:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64956 states. [2018-11-06 22:06:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64956 states to 64956 states and 86129 transitions. [2018-11-06 22:06:08,354 INFO L78 Accepts]: Start accepts. Automaton has 64956 states and 86129 transitions. Word has length 365 [2018-11-06 22:06:08,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:06:08,354 INFO L480 AbstractCegarLoop]: Abstraction has 64956 states and 86129 transitions. [2018-11-06 22:06:08,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:06:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 64956 states and 86129 transitions. [2018-11-06 22:06:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-11-06 22:06:08,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:06:08,368 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, 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, 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] [2018-11-06 22:06:08,369 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:06:08,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:06:08,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1935862081, now seen corresponding path program 1 times [2018-11-06 22:06:08,369 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:06:08,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:06:08,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:08,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:06:08,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:06:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2018-11-06 22:06:09,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:06:09,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:06:09,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:06:09,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:06:09,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:06:09,227 INFO L87 Difference]: Start difference. First operand 64956 states and 86129 transitions. Second operand 4 states. [2018-11-06 22:06:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:06:27,275 INFO L93 Difference]: Finished difference Result 235259 states and 309486 transitions. [2018-11-06 22:06:27,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:06:27,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2018-11-06 22:06:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:06:27,554 INFO L225 Difference]: With dead ends: 235259 [2018-11-06 22:06:27,555 INFO L226 Difference]: Without dead ends: 170305 [2018-11-06 22:06:27,615 INFO L604 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 [2018-11-06 22:06:27,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170305 states. [2018-11-06 22:06:29,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170305 to 168873. [2018-11-06 22:06:29,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168873 states. [2018-11-06 22:06:29,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168873 states to 168873 states and 202433 transitions. [2018-11-06 22:06:29,315 INFO L78 Accepts]: Start accepts. Automaton has 168873 states and 202433 transitions. Word has length 466 [2018-11-06 22:06:29,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:06:29,316 INFO L480 AbstractCegarLoop]: Abstraction has 168873 states and 202433 transitions. [2018-11-06 22:06:29,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:06:29,316 INFO L276 IsEmpty]: Start isEmpty. Operand 168873 states and 202433 transitions. [2018-11-06 22:06:29,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2018-11-06 22:06:29,370 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:06:29,371 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:06:29,371 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:06:29,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:06:29,372 INFO L82 PathProgramCache]: Analyzing trace with hash 121612443, now seen corresponding path program 1 times [2018-11-06 22:06:29,372 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:06:29,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:06:29,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:29,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:06:29,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:06:29,949 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 22:06:30,477 WARN L179 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-11-06 22:06:30,599 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-11-06 22:06:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2018-11-06 22:06:32,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:06:32,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 22:06:32,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:06:32,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:06:32,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:06:32,042 INFO L87 Difference]: Start difference. First operand 168873 states and 202433 transitions. Second operand 7 states. [2018-11-06 22:07:06,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:07:06,534 INFO L93 Difference]: Finished difference Result 377375 states and 447271 transitions. [2018-11-06 22:07:06,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:07:06,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1019 [2018-11-06 22:07:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:07:06,816 INFO L225 Difference]: With dead ends: 377375 [2018-11-06 22:07:06,817 INFO L226 Difference]: Without dead ends: 209870 [2018-11-06 22:07:06,911 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:07:07,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209870 states. [2018-11-06 22:07:09,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209870 to 205764. [2018-11-06 22:07:09,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205764 states. [2018-11-06 22:07:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205764 states to 205764 states and 240850 transitions. [2018-11-06 22:07:09,384 INFO L78 Accepts]: Start accepts. Automaton has 205764 states and 240850 transitions. Word has length 1019 [2018-11-06 22:07:09,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:07:09,385 INFO L480 AbstractCegarLoop]: Abstraction has 205764 states and 240850 transitions. [2018-11-06 22:07:09,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:07:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand 205764 states and 240850 transitions. [2018-11-06 22:07:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2018-11-06 22:07:09,437 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:07:09,438 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 22:07:09,439 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:07:09,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:07:09,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1001764960, now seen corresponding path program 1 times [2018-11-06 22:07:09,440 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:07:09,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:07:09,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:09,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:07:09,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:07:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-11-06 22:07:11,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:07:11,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:07:11,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:07:11,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:07:11,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:07:11,638 INFO L87 Difference]: Start difference. First operand 205764 states and 240850 transitions. Second operand 4 states. [2018-11-06 22:07:25,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:07:25,666 INFO L93 Difference]: Finished difference Result 474364 states and 558603 transitions. [2018-11-06 22:07:25,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:07:25,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1038 [2018-11-06 22:07:25,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:07:26,023 INFO L225 Difference]: With dead ends: 474364 [2018-11-06 22:07:26,024 INFO L226 Difference]: Without dead ends: 265863 [2018-11-06 22:07:26,144 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:07:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265863 states. [2018-11-06 22:07:29,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265863 to 265852. [2018-11-06 22:07:29,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265852 states. [2018-11-06 22:07:29,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265852 states to 265852 states and 296554 transitions. [2018-11-06 22:07:29,635 INFO L78 Accepts]: Start accepts. Automaton has 265852 states and 296554 transitions. Word has length 1038 [2018-11-06 22:07:29,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:07:29,637 INFO L480 AbstractCegarLoop]: Abstraction has 265852 states and 296554 transitions. [2018-11-06 22:07:29,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:07:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 265852 states and 296554 transitions. [2018-11-06 22:07:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2018-11-06 22:07:29,659 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:07:29,659 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-11-06 22:07:29,660 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:07:29,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:07:29,660 INFO L82 PathProgramCache]: Analyzing trace with hash 18831720, now seen corresponding path program 1 times [2018-11-06 22:07:29,660 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:07:29,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:07:29,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:29,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:07:29,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:07:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 774 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-11-06 22:07:32,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:07:32,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:07:32,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:07:32,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:07:32,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:07:32,285 INFO L87 Difference]: Start difference. First operand 265852 states and 296554 transitions. Second operand 4 states. [2018-11-06 22:07:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:07:52,716 INFO L93 Difference]: Finished difference Result 601493 states and 673824 transitions. [2018-11-06 22:07:52,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:07:52,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1100 [2018-11-06 22:07:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:07:53,107 INFO L225 Difference]: With dead ends: 601493 [2018-11-06 22:07:53,107 INFO L226 Difference]: Without dead ends: 328796 [2018-11-06 22:07:53,208 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:07:53,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328796 states. [2018-11-06 22:08:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328796 to 324570. [2018-11-06 22:08:03,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324570 states. [2018-11-06 22:08:03,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324570 states to 324570 states and 355296 transitions. [2018-11-06 22:08:03,938 INFO L78 Accepts]: Start accepts. Automaton has 324570 states and 355296 transitions. Word has length 1100 [2018-11-06 22:08:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:08:03,940 INFO L480 AbstractCegarLoop]: Abstraction has 324570 states and 355296 transitions. [2018-11-06 22:08:03,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:08:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 324570 states and 355296 transitions. [2018-11-06 22:08:03,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1219 [2018-11-06 22:08:03,966 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:08:03,967 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:08:03,967 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:08:03,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:08:03,968 INFO L82 PathProgramCache]: Analyzing trace with hash 852306840, now seen corresponding path program 1 times [2018-11-06 22:08:03,968 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:08:03,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:08:03,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:08:03,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:08:03,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:08:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:08:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 837 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-11-06 22:08:06,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:08:06,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:08:06,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:08:06,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:08:06,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:08:06,998 INFO L87 Difference]: Start difference. First operand 324570 states and 355296 transitions. Second operand 4 states. Received shutdown request... [2018-11-06 22:08:16,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:08:16,791 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 22:08:16,797 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 22:08:16,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:08:16 BoogieIcfgContainer [2018-11-06 22:08:16,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:08:16,799 INFO L168 Benchmark]: Toolchain (without parser) took 225405.46 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-06 22:08:16,800 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-11-06 22:08:16,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3538.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 998.7 MB in the end (delta: 381.3 MB). Peak memory consumption was 381.3 MB. Max. memory is 7.1 GB. [2018-11-06 22:08:16,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 1134.80 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 850.9 MB). Free memory was 998.7 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-06 22:08:16,802 INFO L168 Benchmark]: Boogie Preprocessor took 708.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 107.6 MB). Peak memory consumption was 107.6 MB. Max. memory is 7.1 GB. [2018-11-06 22:08:16,803 INFO L168 Benchmark]: RCFGBuilder took 15725.15 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 305.7 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -389.8 MB). Peak memory consumption was 806.9 MB. Max. memory is 7.1 GB. [2018-11-06 22:08:16,804 INFO L168 Benchmark]: TraceAbstraction took 204293.35 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -457.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-06 22:08:16,809 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 3538.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 998.7 MB in the end (delta: 381.3 MB). Peak memory consumption was 381.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1134.80 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 850.9 MB). Free memory was 998.7 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 708.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 107.6 MB). Peak memory consumption was 107.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15725.15 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 305.7 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -389.8 MB). Peak memory consumption was 806.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204293.35 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -457.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 184]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 184). Cancelled while BasicCegarLoop was constructing difference of abstraction (324570states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (131590 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 204.2s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 170.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11403 SDtfs, 35778 SDslu, 3738 SDs, 0 SdLazy, 88600 SolverSat, 21434 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 134.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324570occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 19.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 16939 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 5585 NumberOfCodeBlocks, 5585 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 5576 ConstructedInterpolants, 0 QuantifiedInterpolants, 10328854 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 4969/4969 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown