java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:07:27,175 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:07:27,177 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:07:27,192 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:07:27,193 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:07:27,194 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:07:27,195 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:07:27,197 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:07:27,199 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:07:27,200 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:07:27,201 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:07:27,201 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:07:27,202 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:07:27,203 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:07:27,205 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:07:27,205 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:07:27,206 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:07:27,208 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:07:27,210 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:07:27,212 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:07:27,213 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:07:27,215 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:07:27,218 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:07:27,218 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:07:27,218 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:07:27,219 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:07:27,220 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:07:27,221 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:07:27,222 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:07:27,223 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:07:27,224 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:07:27,224 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 17:07:27,227 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 [2018-10-24 17:07:27,243 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:07:27,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:07:27,244 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:07:27,244 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:07:27,245 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:07:27,245 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:07:27,245 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:07:27,246 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:07:27,246 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:07:27,246 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:07:27,246 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:07:27,247 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:07:27,247 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:07:27,247 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:07:27,247 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:07:27,247 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:07:27,248 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:07:27,248 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:07:27,248 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:07:27,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:07:27,248 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:07:27,250 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:07:27,250 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:07:27,250 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:07:27,250 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:07:27,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:07:27,251 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:07:27,251 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:07:27,295 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:07:27,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:07:27,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:07:27,316 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:07:27,317 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:07:27,318 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label38_true-unreach-call.c [2018-10-24 17:07:27,391 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3672a17df/f498d057c64146b99d78994d62c5b2c2/FLAG4860d7179 [2018-10-24 17:07:28,287 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:07:28,289 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label38_true-unreach-call.c [2018-10-24 17:07:28,344 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3672a17df/f498d057c64146b99d78994d62c5b2c2/FLAG4860d7179 [2018-10-24 17:07:28,365 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3672a17df/f498d057c64146b99d78994d62c5b2c2 [2018-10-24 17:07:28,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:07:28,381 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:07:28,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:07:28,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:07:28,389 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:07:28,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:07:28" (1/1) ... [2018-10-24 17:07:28,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:28, skipping insertion in model container [2018-10-24 17:07:28,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:07:28" (1/1) ... [2018-10-24 17:07:28,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:07:28,659 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:07:30,677 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:07:30,682 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:07:31,690 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:07:31,752 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:07:31,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31 WrapperNode [2018-10-24 17:07:31,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:07:31,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:07:31,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:07:31,754 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:07:31,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31" (1/1) ... [2018-10-24 17:07:31,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31" (1/1) ... [2018-10-24 17:07:32,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:07:32,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:07:32,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:07:32,911 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:07:32,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31" (1/1) ... [2018-10-24 17:07:32,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31" (1/1) ... [2018-10-24 17:07:33,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31" (1/1) ... [2018-10-24 17:07:33,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31" (1/1) ... [2018-10-24 17:07:33,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31" (1/1) ... [2018-10-24 17:07:33,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31" (1/1) ... [2018-10-24 17:07:33,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31" (1/1) ... [2018-10-24 17:07:33,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:07:33,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:07:33,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:07:33,615 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:07:33,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31" (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 [2018-10-24 17:07:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:07:33,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:07:33,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:07:51,902 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:07:51,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:07:51 BoogieIcfgContainer [2018-10-24 17:07:51,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:07:51,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:07:51,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:07:51,909 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:07:51,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:07:28" (1/3) ... [2018-10-24 17:07:51,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7476a46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:07:51, skipping insertion in model container [2018-10-24 17:07:51,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:31" (2/3) ... [2018-10-24 17:07:51,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7476a46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:07:51, skipping insertion in model container [2018-10-24 17:07:51,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:07:51" (3/3) ... [2018-10-24 17:07:51,914 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label38_true-unreach-call.c [2018-10-24 17:07:51,924 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:07:51,937 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:07:51,954 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:07:52,018 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:07:52,019 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:07:52,019 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:07:52,019 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:07:52,019 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:07:52,019 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:07:52,019 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:07:52,019 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:07:52,020 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:07:52,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:07:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-24 17:07:52,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:52,081 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, 1, 1, 1] [2018-10-24 17:07:52,083 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:52,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:52,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1074201598, now seen corresponding path program 1 times [2018-10-24 17:07:52,092 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:52,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:52,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:52,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:52,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:07:52,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:52,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:07:52,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:07:52,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:07:52,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:52,643 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:08:18,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:18,037 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-10-24 17:08:18,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:08:18,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-10-24 17:08:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:18,091 INFO L225 Difference]: With dead ends: 6326 [2018-10-24 17:08:18,092 INFO L226 Difference]: Without dead ends: 4570 [2018-10-24 17:08:18,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-10-24 17:08:18,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-10-24 17:08:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-24 17:08:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-10-24 17:08:18,326 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 60 [2018-10-24 17:08:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:18,327 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-10-24 17:08:18,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:08:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-10-24 17:08:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 17:08:18,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:18,335 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, 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] [2018-10-24 17:08:18,335 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:18,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:18,336 INFO L82 PathProgramCache]: Analyzing trace with hash -235523505, now seen corresponding path program 1 times [2018-10-24 17:08:18,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:18,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:18,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:18,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:18,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:08:18,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:08:18,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:08:18,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:08:18,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:08:18,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:18,816 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-10-24 17:08:48,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:48,818 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-10-24 17:08:48,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:08:48,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2018-10-24 17:08:48,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:48,882 INFO L225 Difference]: With dead ends: 17552 [2018-10-24 17:08:48,883 INFO L226 Difference]: Without dead ends: 12990 [2018-10-24 17:08:48,891 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 [2018-10-24 17:08:48,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-10-24 17:08:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-10-24 17:08:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-10-24 17:08:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-10-24 17:08:49,087 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 164 [2018-10-24 17:08:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:49,088 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-10-24 17:08:49,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:08:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-10-24 17:08:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-24 17:08:49,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:49,092 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, 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] [2018-10-24 17:08:49,092 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:49,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:49,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1859924485, now seen corresponding path program 1 times [2018-10-24 17:08:49,093 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:49,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:49,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:49,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:49,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:08:49,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:08:49,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:08:49,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:08:49,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:08:49,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:49,417 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-10-24 17:09:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:09,840 INFO L93 Difference]: Finished difference Result 33844 states and 54415 transitions. [2018-10-24 17:09:09,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:09,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2018-10-24 17:09:09,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:09,913 INFO L225 Difference]: With dead ends: 33844 [2018-10-24 17:09:09,913 INFO L226 Difference]: Without dead ends: 25180 [2018-10-24 17:09:09,926 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 [2018-10-24 17:09:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25180 states. [2018-10-24 17:09:10,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25180 to 25142. [2018-10-24 17:09:10,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25142 states. [2018-10-24 17:09:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 35892 transitions. [2018-10-24 17:09:10,325 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 35892 transitions. Word has length 168 [2018-10-24 17:09:10,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:10,326 INFO L481 AbstractCegarLoop]: Abstraction has 25142 states and 35892 transitions. [2018-10-24 17:09:10,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:09:10,326 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 35892 transitions. [2018-10-24 17:09:10,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-24 17:09:10,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:10,330 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 17:09:10,330 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:10,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:10,331 INFO L82 PathProgramCache]: Analyzing trace with hash -816276188, now seen corresponding path program 1 times [2018-10-24 17:09:10,331 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:10,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:10,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:10,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:10,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-10-24 17:09:10,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:09:10,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:09:10,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:09:10,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:09:10,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:10,647 INFO L87 Difference]: Start difference. First operand 25142 states and 35892 transitions. Second operand 4 states. [2018-10-24 17:09:30,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:30,452 INFO L93 Difference]: Finished difference Result 98403 states and 140795 transitions. [2018-10-24 17:09:30,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:30,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2018-10-24 17:09:30,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:30,599 INFO L225 Difference]: With dead ends: 98403 [2018-10-24 17:09:30,599 INFO L226 Difference]: Without dead ends: 73263 [2018-10-24 17:09:30,646 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 [2018-10-24 17:09:30,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73263 states. [2018-10-24 17:09:31,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73263 to 73242. [2018-10-24 17:09:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73242 states. [2018-10-24 17:09:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73242 states to 73242 states and 91790 transitions. [2018-10-24 17:09:31,724 INFO L78 Accepts]: Start accepts. Automaton has 73242 states and 91790 transitions. Word has length 226 [2018-10-24 17:09:31,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:31,725 INFO L481 AbstractCegarLoop]: Abstraction has 73242 states and 91790 transitions. [2018-10-24 17:09:31,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:09:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 73242 states and 91790 transitions. [2018-10-24 17:09:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2018-10-24 17:09:31,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:31,747 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:09:31,747 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:31,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:31,748 INFO L82 PathProgramCache]: Analyzing trace with hash -780358073, now seen corresponding path program 1 times [2018-10-24 17:09:31,748 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:31,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:31,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:31,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:31,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:32,364 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:09:32,930 WARN L179 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-24 17:09:33,103 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-24 17:09:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2018-10-24 17:09:33,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:09:33,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:09:33,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:09:33,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:09:33,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:09:33,947 INFO L87 Difference]: Start difference. First operand 73242 states and 91790 transitions. Second operand 7 states. [2018-10-24 17:10:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:02,919 INFO L93 Difference]: Finished difference Result 172450 states and 210819 transitions. [2018-10-24 17:10:02,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:10:02,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 652 [2018-10-24 17:10:02,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:03,170 INFO L225 Difference]: With dead ends: 172450 [2018-10-24 17:10:03,170 INFO L226 Difference]: Without dead ends: 99210 [2018-10-24 17:10:03,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:10:03,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99210 states. [2018-10-24 17:10:04,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99210 to 95106. [2018-10-24 17:10:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95106 states. [2018-10-24 17:10:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95106 states to 95106 states and 114311 transitions. [2018-10-24 17:10:04,285 INFO L78 Accepts]: Start accepts. Automaton has 95106 states and 114311 transitions. Word has length 652 [2018-10-24 17:10:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:04,286 INFO L481 AbstractCegarLoop]: Abstraction has 95106 states and 114311 transitions. [2018-10-24 17:10:04,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:10:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 95106 states and 114311 transitions. [2018-10-24 17:10:04,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2018-10-24 17:10:04,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:04,322 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:10:04,323 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:04,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:04,323 INFO L82 PathProgramCache]: Analyzing trace with hash -898545183, now seen corresponding path program 1 times [2018-10-24 17:10:04,323 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:04,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:04,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:04,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:04,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:04,873 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 17:10:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-10-24 17:10:05,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:05,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:10:05,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:10:05,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:10:05,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:05,161 INFO L87 Difference]: Start difference. First operand 95106 states and 114311 transitions. Second operand 4 states. [2018-10-24 17:10:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:26,405 INFO L93 Difference]: Finished difference Result 240764 states and 294963 transitions. [2018-10-24 17:10:26,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:10:26,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 680 [2018-10-24 17:10:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:26,608 INFO L225 Difference]: With dead ends: 240764 [2018-10-24 17:10:26,609 INFO L226 Difference]: Without dead ends: 145660 [2018-10-24 17:10:26,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:26,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145660 states. [2018-10-24 17:10:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145660 to 142917. [2018-10-24 17:10:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142917 states. [2018-10-24 17:10:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142917 states to 142917 states and 167345 transitions. [2018-10-24 17:10:28,560 INFO L78 Accepts]: Start accepts. Automaton has 142917 states and 167345 transitions. Word has length 680 [2018-10-24 17:10:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:28,561 INFO L481 AbstractCegarLoop]: Abstraction has 142917 states and 167345 transitions. [2018-10-24 17:10:28,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:10:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 142917 states and 167345 transitions. [2018-10-24 17:10:28,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2018-10-24 17:10:28,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:28,577 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, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:10:28,577 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:28,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:28,577 INFO L82 PathProgramCache]: Analyzing trace with hash 721397578, now seen corresponding path program 1 times [2018-10-24 17:10:28,578 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:28,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:28,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:28,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:28,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:10:29,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:29,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:10:29,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:10:29,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:10:29,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:29,589 INFO L87 Difference]: Start difference. First operand 142917 states and 167345 transitions. Second operand 4 states. [2018-10-24 17:10:47,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:47,331 INFO L93 Difference]: Finished difference Result 285835 states and 334697 transitions. [2018-10-24 17:10:47,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:10:47,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 915 [2018-10-24 17:10:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:47,541 INFO L225 Difference]: With dead ends: 285835 [2018-10-24 17:10:47,541 INFO L226 Difference]: Without dead ends: 142920 [2018-10-24 17:10:47,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142920 states. [2018-10-24 17:10:49,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142920 to 131981. [2018-10-24 17:10:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131981 states. [2018-10-24 17:10:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131981 states to 131981 states and 147273 transitions. [2018-10-24 17:10:49,744 INFO L78 Accepts]: Start accepts. Automaton has 131981 states and 147273 transitions. Word has length 915 [2018-10-24 17:10:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:49,745 INFO L481 AbstractCegarLoop]: Abstraction has 131981 states and 147273 transitions. [2018-10-24 17:10:49,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:10:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 131981 states and 147273 transitions. [2018-10-24 17:10:49,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2018-10-24 17:10:49,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:49,771 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, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:10:49,771 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:49,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:49,772 INFO L82 PathProgramCache]: Analyzing trace with hash 85037834, now seen corresponding path program 1 times [2018-10-24 17:10:49,772 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:49,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:49,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:49,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:49,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2018-10-24 17:10:51,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:51,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:10:51,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:10:51,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:10:51,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:51,288 INFO L87 Difference]: Start difference. First operand 131981 states and 147273 transitions. Second operand 4 states. [2018-10-24 17:11:14,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:14,249 INFO L93 Difference]: Finished difference Result 455386 states and 509136 transitions. [2018-10-24 17:11:14,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:11:14,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1047 [2018-10-24 17:11:14,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:14,639 INFO L225 Difference]: With dead ends: 455386 [2018-10-24 17:11:14,640 INFO L226 Difference]: Without dead ends: 323407 [2018-10-24 17:11:14,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:11:14,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323407 states. [2018-10-24 17:11:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323407 to 319140. [2018-10-24 17:11:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319140 states. [2018-10-24 17:11:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319140 states to 319140 states and 348808 transitions. [2018-10-24 17:11:20,552 INFO L78 Accepts]: Start accepts. Automaton has 319140 states and 348808 transitions. Word has length 1047 [2018-10-24 17:11:20,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:20,554 INFO L481 AbstractCegarLoop]: Abstraction has 319140 states and 348808 transitions. [2018-10-24 17:11:20,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:11:20,554 INFO L276 IsEmpty]: Start isEmpty. Operand 319140 states and 348808 transitions. [2018-10-24 17:11:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2018-10-24 17:11:20,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:20,584 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:11:20,584 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:20,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:20,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1793154625, now seen corresponding path program 1 times [2018-10-24 17:11:20,585 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:20,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:20,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:20,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:20,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:21,908 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 17:11:22,196 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 Received shutdown request... [2018-10-24 17:11:26,389 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 116 proven. 599 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-24 17:11:26,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:11:26,390 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 [2018-10-24 17:11:26,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Cannot interrupt operation gracefully because timeout expired. Forcing shutdown