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/Problem15_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:38:43,118 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:38:43,120 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:38:43,137 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:38:43,137 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:38:43,139 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:38:43,140 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:38:43,142 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:38:43,143 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:38:43,144 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:38:43,145 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:38:43,145 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:38:43,146 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:38:43,147 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:38:43,148 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:38:43,149 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:38:43,150 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:38:43,152 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:38:43,154 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:38:43,155 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:38:43,156 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:38:43,158 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:38:43,160 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:38:43,160 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:38:43,161 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:38:43,162 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:38:43,163 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:38:43,163 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:38:43,164 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:38:43,165 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:38:43,166 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:38:43,166 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:38:43,167 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:38:43,167 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:38:43,168 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:38:43,169 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:38:43,169 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 16:38:43,188 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:38:43,188 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:38:43,189 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:38:43,189 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:38:43,190 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:38:43,190 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:38:43,190 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:38:43,191 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:38:43,191 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:38:43,191 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:38:43,191 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:38:43,191 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:38:43,192 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:38:43,192 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:38:43,192 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:38:43,192 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:38:43,192 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:38:43,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:38:43,193 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:38:43,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:38:43,193 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:38:43,194 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:38:43,194 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:38:43,194 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:38:43,194 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:38:43,194 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:38:43,194 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:38:43,195 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:38:43,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:38:43,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:38:43,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:38:43,257 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:38:43,258 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:38:43,259 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-10-24 16:38:43,324 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6e401d54b/32fafe482b6845409aeeb30d2cdd13fe/FLAG4f3544672 [2018-10-24 16:38:44,051 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:38:44,052 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-10-24 16:38:44,077 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6e401d54b/32fafe482b6845409aeeb30d2cdd13fe/FLAG4f3544672 [2018-10-24 16:38:44,093 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6e401d54b/32fafe482b6845409aeeb30d2cdd13fe [2018-10-24 16:38:44,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:38:44,107 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:38:44,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:38:44,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:38:44,112 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:38:44,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:38:44" (1/1) ... [2018-10-24 16:38:44,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:44, skipping insertion in model container [2018-10-24 16:38:44,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:38:44" (1/1) ... [2018-10-24 16:38:44,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:38:44,229 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:38:44,975 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:38:44,985 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:38:45,340 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:38:45,362 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:38:45,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45 WrapperNode [2018-10-24 16:38:45,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:38:45,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:38:45,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:38:45,365 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:38:45,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45" (1/1) ... [2018-10-24 16:38:45,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45" (1/1) ... [2018-10-24 16:38:45,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:38:45,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:38:45,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:38:45,769 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:38:45,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45" (1/1) ... [2018-10-24 16:38:45,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45" (1/1) ... [2018-10-24 16:38:45,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45" (1/1) ... [2018-10-24 16:38:45,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45" (1/1) ... [2018-10-24 16:38:45,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45" (1/1) ... [2018-10-24 16:38:45,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45" (1/1) ... [2018-10-24 16:38:45,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45" (1/1) ... [2018-10-24 16:38:46,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:38:46,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:38:46,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:38:46,011 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:38:46,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:38:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:38:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:38:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:38:54,546 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:38:54,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:38:54 BoogieIcfgContainer [2018-10-24 16:38:54,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:38:54,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:38:54,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:38:54,552 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:38:54,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:38:44" (1/3) ... [2018-10-24 16:38:54,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498d1f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:38:54, skipping insertion in model container [2018-10-24 16:38:54,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:38:45" (2/3) ... [2018-10-24 16:38:54,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498d1f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:38:54, skipping insertion in model container [2018-10-24 16:38:54,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:38:54" (3/3) ... [2018-10-24 16:38:54,557 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label57_true-unreach-call.c [2018-10-24 16:38:54,569 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:38:54,584 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:38:54,607 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:38:54,660 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:38:54,661 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:38:54,661 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:38:54,661 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:38:54,662 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:38:54,662 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:38:54,662 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:38:54,662 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:38:54,662 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:38:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-24 16:38:54,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-24 16:38:54,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:54,709 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] [2018-10-24 16:38:54,712 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:54,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:54,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1057203130, now seen corresponding path program 1 times [2018-10-24 16:38:54,722 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:54,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:54,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:54,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:54,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:55,235 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 16:38:55,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:38:55,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:38:55,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:38:55,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:38:55,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:38:55,264 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-24 16:39:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:02,984 INFO L93 Difference]: Finished difference Result 1471 states and 2719 transitions. [2018-10-24 16:39:02,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:39:02,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-10-24 16:39:02,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:03,018 INFO L225 Difference]: With dead ends: 1471 [2018-10-24 16:39:03,018 INFO L226 Difference]: Without dead ends: 1039 [2018-10-24 16:39:03,028 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 16:39:03,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2018-10-24 16:39:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1037. [2018-10-24 16:39:03,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-10-24 16:39:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1662 transitions. [2018-10-24 16:39:03,174 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1662 transitions. Word has length 42 [2018-10-24 16:39:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:03,175 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1662 transitions. [2018-10-24 16:39:03,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:39:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1662 transitions. [2018-10-24 16:39:03,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 16:39:03,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:03,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:03,186 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:03,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:03,188 INFO L82 PathProgramCache]: Analyzing trace with hash -206840875, now seen corresponding path program 1 times [2018-10-24 16:39:03,188 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:03,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:03,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:03,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:03,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:39:03,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:39:03,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:39:03,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:39:03,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:39:03,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:39:03,529 INFO L87 Difference]: Start difference. First operand 1037 states and 1662 transitions. Second operand 4 states. [2018-10-24 16:39:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:08,860 INFO L93 Difference]: Finished difference Result 3939 states and 6385 transitions. [2018-10-24 16:39:08,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:39:08,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-10-24 16:39:08,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:08,879 INFO L225 Difference]: With dead ends: 3939 [2018-10-24 16:39:08,880 INFO L226 Difference]: Without dead ends: 2904 [2018-10-24 16:39:08,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:39:08,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2018-10-24 16:39:08,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1938. [2018-10-24 16:39:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2018-10-24 16:39:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2794 transitions. [2018-10-24 16:39:08,960 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2794 transitions. Word has length 118 [2018-10-24 16:39:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:08,961 INFO L481 AbstractCegarLoop]: Abstraction has 1938 states and 2794 transitions. [2018-10-24 16:39:08,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:39:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2794 transitions. [2018-10-24 16:39:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-10-24 16:39:08,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:08,971 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:08,972 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:08,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:08,972 INFO L82 PathProgramCache]: Analyzing trace with hash -950387328, now seen corresponding path program 1 times [2018-10-24 16:39:08,973 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:08,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:08,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:08,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:08,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:09,836 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-24 16:39:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-10-24 16:39:10,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:39:10,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:39:10,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:39:10,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:39:10,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:39:10,319 INFO L87 Difference]: Start difference. First operand 1938 states and 2794 transitions. Second operand 5 states. [2018-10-24 16:39:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:19,575 INFO L93 Difference]: Finished difference Result 4779 states and 6610 transitions. [2018-10-24 16:39:19,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:39:19,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 392 [2018-10-24 16:39:19,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:19,591 INFO L225 Difference]: With dead ends: 4779 [2018-10-24 16:39:19,591 INFO L226 Difference]: Without dead ends: 2843 [2018-10-24 16:39:19,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:39:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2018-10-24 16:39:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2842. [2018-10-24 16:39:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2018-10-24 16:39:19,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 3761 transitions. [2018-10-24 16:39:19,650 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 3761 transitions. Word has length 392 [2018-10-24 16:39:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:19,651 INFO L481 AbstractCegarLoop]: Abstraction has 2842 states and 3761 transitions. [2018-10-24 16:39:19,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:39:19,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 3761 transitions. [2018-10-24 16:39:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-10-24 16:39:19,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:19,660 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:19,660 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:19,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:19,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1161204594, now seen corresponding path program 1 times [2018-10-24 16:39:19,661 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:19,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:19,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:19,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:19,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-24 16:39:20,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:39:20,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:39:20,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:39:20,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:39:20,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:39:20,540 INFO L87 Difference]: Start difference. First operand 2842 states and 3761 transitions. Second operand 4 states. [2018-10-24 16:39:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:25,770 INFO L93 Difference]: Finished difference Result 5983 states and 8140 transitions. [2018-10-24 16:39:25,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:39:25,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2018-10-24 16:39:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:25,790 INFO L225 Difference]: With dead ends: 5983 [2018-10-24 16:39:25,791 INFO L226 Difference]: Without dead ends: 3446 [2018-10-24 16:39:25,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 16:39:25,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2018-10-24 16:39:25,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 3444. [2018-10-24 16:39:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3444 states. [2018-10-24 16:39:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3444 states to 3444 states and 4309 transitions. [2018-10-24 16:39:25,864 INFO L78 Accepts]: Start accepts. Automaton has 3444 states and 4309 transitions. Word has length 466 [2018-10-24 16:39:25,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:25,865 INFO L481 AbstractCegarLoop]: Abstraction has 3444 states and 4309 transitions. [2018-10-24 16:39:25,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:39:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3444 states and 4309 transitions. [2018-10-24 16:39:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-10-24 16:39:25,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:25,877 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:25,877 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:25,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:25,878 INFO L82 PathProgramCache]: Analyzing trace with hash -537850778, now seen corresponding path program 1 times [2018-10-24 16:39:25,878 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:25,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:25,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:25,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:25,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-24 16:39:26,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:39:26,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:39:26,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:39:26,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:39:26,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:39:26,411 INFO L87 Difference]: Start difference. First operand 3444 states and 4309 transitions. Second operand 4 states. [2018-10-24 16:39:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:33,744 INFO L93 Difference]: Finished difference Result 7190 states and 9172 transitions. [2018-10-24 16:39:33,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:39:33,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 475 [2018-10-24 16:39:33,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:33,765 INFO L225 Difference]: With dead ends: 7190 [2018-10-24 16:39:33,766 INFO L226 Difference]: Without dead ends: 4051 [2018-10-24 16:39:33,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 16:39:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2018-10-24 16:39:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 4047. [2018-10-24 16:39:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4047 states. [2018-10-24 16:39:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 4877 transitions. [2018-10-24 16:39:33,846 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 4877 transitions. Word has length 475 [2018-10-24 16:39:33,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:33,847 INFO L481 AbstractCegarLoop]: Abstraction has 4047 states and 4877 transitions. [2018-10-24 16:39:33,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:39:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 4877 transitions. [2018-10-24 16:39:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-10-24 16:39:33,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:33,863 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:33,864 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:33,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:33,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1637377501, now seen corresponding path program 1 times [2018-10-24 16:39:33,864 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:33,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:33,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:33,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:33,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-10-24 16:39:34,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:39:34,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:39:34,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:39:34,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:39:34,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:39:34,422 INFO L87 Difference]: Start difference. First operand 4047 states and 4877 transitions. Second operand 3 states. [2018-10-24 16:39:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:36,934 INFO L93 Difference]: Finished difference Result 10189 states and 12204 transitions. [2018-10-24 16:39:36,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:39:36,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 496 [2018-10-24 16:39:36,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:36,961 INFO L225 Difference]: With dead ends: 10189 [2018-10-24 16:39:36,961 INFO L226 Difference]: Without dead ends: 6144 [2018-10-24 16:39:36,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:39:36,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2018-10-24 16:39:37,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 5544. [2018-10-24 16:39:37,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5544 states. [2018-10-24 16:39:37,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 6480 transitions. [2018-10-24 16:39:37,071 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 6480 transitions. Word has length 496 [2018-10-24 16:39:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:37,073 INFO L481 AbstractCegarLoop]: Abstraction has 5544 states and 6480 transitions. [2018-10-24 16:39:37,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:39:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 6480 transitions. [2018-10-24 16:39:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-10-24 16:39:37,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:37,087 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:39:37,088 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:37,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:37,088 INFO L82 PathProgramCache]: Analyzing trace with hash -679040075, now seen corresponding path program 1 times [2018-10-24 16:39:37,088 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:37,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:37,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:37,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:37,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2018-10-24 16:39:37,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:39:37,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:39:37,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:39:37,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:39:37,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:39:37,900 INFO L87 Difference]: Start difference. First operand 5544 states and 6480 transitions. Second operand 4 states. [2018-10-24 16:39:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:42,493 INFO L93 Difference]: Finished difference Result 16471 states and 19329 transitions. [2018-10-24 16:39:42,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:39:42,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 499 [2018-10-24 16:39:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:42,526 INFO L225 Difference]: With dead ends: 16471 [2018-10-24 16:39:42,526 INFO L226 Difference]: Without dead ends: 7269 [2018-10-24 16:39:42,538 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 16:39:42,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2018-10-24 16:39:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 7269. [2018-10-24 16:39:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2018-10-24 16:39:42,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 7624 transitions. [2018-10-24 16:39:42,649 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 7624 transitions. Word has length 499 [2018-10-24 16:39:42,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:42,650 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 7624 transitions. [2018-10-24 16:39:42,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:39:42,650 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 7624 transitions. [2018-10-24 16:39:42,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2018-10-24 16:39:42,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:42,682 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:42,682 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:42,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:42,683 INFO L82 PathProgramCache]: Analyzing trace with hash -885852833, now seen corresponding path program 1 times [2018-10-24 16:39:42,683 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:42,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:42,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:42,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:42,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1374 backedges. 1009 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-10-24 16:39:43,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:39:43,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:39:43,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:39:43,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:39:43,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:39:43,639 INFO L87 Difference]: Start difference. First operand 7269 states and 7624 transitions. Second operand 3 states. [2018-10-24 16:39:45,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:45,606 INFO L93 Difference]: Finished difference Result 17537 states and 18464 transitions. [2018-10-24 16:39:45,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:39:45,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 819 [2018-10-24 16:39:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:45,635 INFO L225 Difference]: With dead ends: 17537 [2018-10-24 16:39:45,635 INFO L226 Difference]: Without dead ends: 10570 [2018-10-24 16:39:45,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:39:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10570 states. [2018-10-24 16:39:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10570 to 8770. [2018-10-24 16:39:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8770 states. [2018-10-24 16:39:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8770 states to 8770 states and 9189 transitions. [2018-10-24 16:39:45,774 INFO L78 Accepts]: Start accepts. Automaton has 8770 states and 9189 transitions. Word has length 819 [2018-10-24 16:39:45,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:45,775 INFO L481 AbstractCegarLoop]: Abstraction has 8770 states and 9189 transitions. [2018-10-24 16:39:45,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:39:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand 8770 states and 9189 transitions. [2018-10-24 16:39:45,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2018-10-24 16:39:45,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:45,797 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:39:45,798 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:45,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:45,798 INFO L82 PathProgramCache]: Analyzing trace with hash -637617602, now seen corresponding path program 1 times [2018-10-24 16:39:45,798 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:45,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:45,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:45,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:45,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2018-10-24 16:39:46,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:39:46,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:39:46,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:39:46,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:39:46,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:39:46,711 INFO L87 Difference]: Start difference. First operand 8770 states and 9189 transitions. Second operand 3 states. [2018-10-24 16:39:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:48,152 INFO L93 Difference]: Finished difference Result 18137 states and 19013 transitions. [2018-10-24 16:39:48,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:39:48,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 831 [2018-10-24 16:39:48,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:48,176 INFO L225 Difference]: With dead ends: 18137 [2018-10-24 16:39:48,176 INFO L226 Difference]: Without dead ends: 9669 [2018-10-24 16:39:48,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:39:48,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9669 states. [2018-10-24 16:39:48,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9669 to 8769. [2018-10-24 16:39:48,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8769 states. [2018-10-24 16:39:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8769 states to 8769 states and 9187 transitions. [2018-10-24 16:39:48,296 INFO L78 Accepts]: Start accepts. Automaton has 8769 states and 9187 transitions. Word has length 831 [2018-10-24 16:39:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:48,297 INFO L481 AbstractCegarLoop]: Abstraction has 8769 states and 9187 transitions. [2018-10-24 16:39:48,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:39:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 8769 states and 9187 transitions. [2018-10-24 16:39:48,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2018-10-24 16:39:48,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:48,316 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:39:48,316 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:48,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:48,317 INFO L82 PathProgramCache]: Analyzing trace with hash 256118363, now seen corresponding path program 1 times [2018-10-24 16:39:48,317 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:48,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:48,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:48,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:48,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 40 proven. 537 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-10-24 16:39:50,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:39:50,109 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 16:39:50,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:50,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:39:51,884 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a0~0_825 Int)) (and (<= (+ v_~a0~0_825 44) 0) (<= (mod v_~a0~0_825 299926) (+ c_~a0~0 300074)) (<= 0 v_~a0~0_825))) (exists ((v_prenex_1 Int)) (let ((.cse0 (mod v_prenex_1 299926))) (and (not (= .cse0 0)) (< v_prenex_1 0) (<= (+ v_prenex_1 44) 0) (<= .cse0 (+ c_~a0~0 600000))))) (exists ((v_prenex_2 Int)) (let ((.cse1 (mod v_prenex_2 299926))) (and (= .cse1 0) (<= (+ v_prenex_2 44) 0) (<= .cse1 (+ c_~a0~0 300074)))))) is different from true [2018-10-24 16:39:54,770 WARN L179 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 164 DAG size of output: 23 [2018-10-24 16:39:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 483 trivial. 458 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2018-10-24 16:39:57,388 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:39:57,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-24 16:39:57,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:39:57,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:39:57,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=35, Unknown=1, NotChecked=12, Total=72 [2018-10-24 16:39:57,391 INFO L87 Difference]: Start difference. First operand 8769 states and 9187 transitions. Second operand 9 states. [2018-10-24 16:40:15,425 WARN L179 SmtUtils]: Spent 5.42 s on a formula simplification. DAG size of input: 38 DAG size of output: 19 [2018-10-24 16:40:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:40:24,557 INFO L93 Difference]: Finished difference Result 29427 states and 30921 transitions. [2018-10-24 16:40:24,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:40:24,557 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 852 [2018-10-24 16:40:24,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:40:24,593 INFO L225 Difference]: With dead ends: 29427 [2018-10-24 16:40:24,594 INFO L226 Difference]: Without dead ends: 20960 [2018-10-24 16:40:24,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 849 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=42, Invalid=70, Unknown=2, NotChecked=18, Total=132 [2018-10-24 16:40:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20960 states. [2018-10-24 16:40:24,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20960 to 17348. [2018-10-24 16:40:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17348 states. [2018-10-24 16:40:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17348 states to 17348 states and 18212 transitions. [2018-10-24 16:40:24,910 INFO L78 Accepts]: Start accepts. Automaton has 17348 states and 18212 transitions. Word has length 852 [2018-10-24 16:40:24,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:40:24,911 INFO L481 AbstractCegarLoop]: Abstraction has 17348 states and 18212 transitions. [2018-10-24 16:40:24,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:40:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 17348 states and 18212 transitions. [2018-10-24 16:40:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2018-10-24 16:40:24,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:40:24,944 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:40:24,946 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:40:24,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:40:24,946 INFO L82 PathProgramCache]: Analyzing trace with hash -578528063, now seen corresponding path program 1 times [2018-10-24 16:40:24,947 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:40:24,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:40:24,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:40:24,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:40:24,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:40:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:40:25,656 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 5 [2018-10-24 16:40:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 1098 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2018-10-24 16:40:26,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:40:26,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:40:26,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:40:26,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:40:26,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:40:26,131 INFO L87 Difference]: Start difference. First operand 17348 states and 18212 transitions. Second operand 4 states. [2018-10-24 16:40:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:40:29,114 INFO L93 Difference]: Finished difference Result 48207 states and 50608 transitions. [2018-10-24 16:40:29,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:40:29,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 883 [2018-10-24 16:40:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:40:29,171 INFO L225 Difference]: With dead ends: 48207 [2018-10-24 16:40:29,171 INFO L226 Difference]: Without dead ends: 31161 [2018-10-24 16:40:29,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 16:40:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31161 states. [2018-10-24 16:40:29,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31161 to 29341. [2018-10-24 16:40:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29341 states. [2018-10-24 16:40:29,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29341 states to 29341 states and 30573 transitions. [2018-10-24 16:40:29,606 INFO L78 Accepts]: Start accepts. Automaton has 29341 states and 30573 transitions. Word has length 883 [2018-10-24 16:40:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:40:29,607 INFO L481 AbstractCegarLoop]: Abstraction has 29341 states and 30573 transitions. [2018-10-24 16:40:29,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:40:29,607 INFO L276 IsEmpty]: Start isEmpty. Operand 29341 states and 30573 transitions. [2018-10-24 16:40:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2018-10-24 16:40:29,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:40:29,659 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:29,659 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:40:29,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:40:29,660 INFO L82 PathProgramCache]: Analyzing trace with hash 646601708, now seen corresponding path program 1 times [2018-10-24 16:40:29,660 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:40:29,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:40:29,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:40:29,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:40:29,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:40:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:40:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 1042 proven. 196 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-10-24 16:40:31,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:40:31,175 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:40:31,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:40:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:40:31,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:41:04,074 WARN L179 SmtUtils]: Spent 32.29 s on a formula simplification. DAG size of input: 122 DAG size of output: 52 [2018-10-24 16:41:07,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 795 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2018-10-24 16:41:07,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:41:07,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:41:07,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:41:07,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:41:07,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:41:07,292 INFO L87 Difference]: Start difference. First operand 29341 states and 30573 transitions. Second operand 6 states. [2018-10-24 16:41:11,398 WARN L179 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 58 [2018-10-24 16:41:23,282 WARN L179 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 57 [2018-10-24 16:41:44,124 WARN L179 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 57 Received shutdown request... [2018-10-24 16:43:00,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:43:00,973 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:43:00,979 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:43:00,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:43:00 BoogieIcfgContainer [2018-10-24 16:43:00,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:43:00,980 INFO L168 Benchmark]: Toolchain (without parser) took 256874.66 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:43:00,981 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:43:00,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1256.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:43:00,983 INFO L168 Benchmark]: Boogie Procedure Inliner took 403.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -882.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:43:00,984 INFO L168 Benchmark]: Boogie Preprocessor took 241.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:43:00,985 INFO L168 Benchmark]: RCFGBuilder took 8536.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 297.7 MB). Peak memory consumption was 297.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:43:00,986 INFO L168 Benchmark]: TraceAbstraction took 246430.91 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -613.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 16:43:00,991 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 1256.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 403.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -882.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 241.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8536.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 297.7 MB). Peak memory consumption was 297.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246430.91 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -613.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (29341states) and FLOYD_HOARE automaton (currently 9 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (19437 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 246.3s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 189.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3892 SDtfs, 8716 SDslu, 1442 SDs, 0 SdLazy, 23184 SolverSat, 3446 SolverUnsat, 36 SolverUnknown, 0 SolverNotchecked, 162.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1874 GetRequests, 1827 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 57.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29341occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 9707 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 48.0s InterpolantComputationTime, 8643 NumberOfCodeBlocks, 8643 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 8629 ConstructedInterpolants, 353 QuantifiedInterpolants, 46204044 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2087 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 10561/11871 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown