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/Problem11_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:03:10,931 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:03:10,934 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:03:10,947 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:03:10,947 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:03:10,948 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:03:10,950 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:03:10,952 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:03:10,955 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:03:10,956 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:03:10,957 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:03:10,957 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:03:10,958 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:03:10,964 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:03:10,965 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:03:10,966 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:03:10,969 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:03:10,971 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:03:10,976 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:03:10,978 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:03:10,982 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:03:10,983 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:03:10,988 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:03:10,991 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:03:10,991 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:03:10,992 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:03:10,993 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:03:10,996 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:03:10,997 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:03:10,998 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:03:10,998 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:03:11,001 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:03:11,001 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:03:11,001 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:03:11,003 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:03:11,003 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:03:11,004 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 16:03:11,030 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:03:11,030 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:03:11,031 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:03:11,031 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:03:11,032 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:03:11,032 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:03:11,032 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:03:11,032 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:03:11,033 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:03:11,033 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:03:11,033 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:03:11,033 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:03:11,033 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:03:11,034 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:03:11,034 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:03:11,034 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:03:11,034 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:03:11,035 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:03:11,035 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:03:11,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:03:11,035 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:03:11,035 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:03:11,035 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:03:11,037 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:03:11,037 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:03:11,037 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:03:11,037 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:03:11,038 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:03:11,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:03:11,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:03:11,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:03:11,129 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:03:11,129 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:03:11,130 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05_true-unreach-call.c [2018-10-24 16:03:11,198 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5dbdea62/791075212dc840008e3babb2238ead56/FLAGcb084e8dd [2018-10-24 16:03:11,875 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:03:11,876 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label05_true-unreach-call.c [2018-10-24 16:03:11,898 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5dbdea62/791075212dc840008e3babb2238ead56/FLAGcb084e8dd [2018-10-24 16:03:11,918 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5dbdea62/791075212dc840008e3babb2238ead56 [2018-10-24 16:03:11,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:03:11,935 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:03:11,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:03:11,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:03:11,943 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:03:11,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:03:11" (1/1) ... [2018-10-24 16:03:11,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec89115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:11, skipping insertion in model container [2018-10-24 16:03:11,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:03:11" (1/1) ... [2018-10-24 16:03:11,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:03:12,031 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:03:12,605 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:03:12,610 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:03:12,789 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:03:12,809 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:03:12,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12 WrapperNode [2018-10-24 16:03:12,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:03:12,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:03:12,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:03:12,811 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:03:12,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12" (1/1) ... [2018-10-24 16:03:12,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12" (1/1) ... [2018-10-24 16:03:13,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:03:13,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:03:13,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:03:13,078 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:03:13,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12" (1/1) ... [2018-10-24 16:03:13,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12" (1/1) ... [2018-10-24 16:03:13,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12" (1/1) ... [2018-10-24 16:03:13,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12" (1/1) ... [2018-10-24 16:03:13,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12" (1/1) ... [2018-10-24 16:03:13,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12" (1/1) ... [2018-10-24 16:03:13,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12" (1/1) ... [2018-10-24 16:03:13,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:03:13,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:03:13,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:03:13,250 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:03:13,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12" (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 16:03:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:03:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:03:13,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:03:18,088 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:03:18,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:03:18 BoogieIcfgContainer [2018-10-24 16:03:18,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:03:18,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:03:18,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:03:18,094 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:03:18,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:03:11" (1/3) ... [2018-10-24 16:03:18,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72598501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:03:18, skipping insertion in model container [2018-10-24 16:03:18,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:12" (2/3) ... [2018-10-24 16:03:18,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72598501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:03:18, skipping insertion in model container [2018-10-24 16:03:18,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:03:18" (3/3) ... [2018-10-24 16:03:18,098 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label05_true-unreach-call.c [2018-10-24 16:03:18,109 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:03:18,122 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:03:18,141 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:03:18,181 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:03:18,182 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:03:18,183 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:03:18,183 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:03:18,183 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:03:18,183 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:03:18,184 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:03:18,184 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:03:18,184 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:03:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-24 16:03:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-24 16:03:18,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:18,224 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, 1, 1, 1, 1, 1] [2018-10-24 16:03:18,227 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:18,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:18,234 INFO L82 PathProgramCache]: Analyzing trace with hash -2101344302, now seen corresponding path program 1 times [2018-10-24 16:03:18,237 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:18,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:18,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:18,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:18,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:18,780 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 16:03:18,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:03:18,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:03:18,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:03:18,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:03:18,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:18,810 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-24 16:03:22,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:22,274 INFO L93 Difference]: Finished difference Result 972 states and 1744 transitions. [2018-10-24 16:03:22,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:03:22,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-10-24 16:03:22,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:22,303 INFO L225 Difference]: With dead ends: 972 [2018-10-24 16:03:22,303 INFO L226 Difference]: Without dead ends: 681 [2018-10-24 16:03:22,309 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 16:03:22,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2018-10-24 16:03:22,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 469. [2018-10-24 16:03:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-10-24 16:03:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 728 transitions. [2018-10-24 16:03:22,396 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 728 transitions. Word has length 65 [2018-10-24 16:03:22,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:22,397 INFO L481 AbstractCegarLoop]: Abstraction has 469 states and 728 transitions. [2018-10-24 16:03:22,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:03:22,397 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 728 transitions. [2018-10-24 16:03:22,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 16:03:22,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:22,404 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:03:22,404 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:22,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:22,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1112990086, now seen corresponding path program 1 times [2018-10-24 16:03:22,405 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:22,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:22,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:22,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:22,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:22,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:03:22,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:03:22,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:03:22,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:03:22,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:22,838 INFO L87 Difference]: Start difference. First operand 469 states and 728 transitions. Second operand 4 states. [2018-10-24 16:03:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:26,110 INFO L93 Difference]: Finished difference Result 1695 states and 2717 transitions. [2018-10-24 16:03:26,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:03:26,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-10-24 16:03:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:26,121 INFO L225 Difference]: With dead ends: 1695 [2018-10-24 16:03:26,121 INFO L226 Difference]: Without dead ends: 1228 [2018-10-24 16:03:26,124 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 16:03:26,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2018-10-24 16:03:26,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1214. [2018-10-24 16:03:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2018-10-24 16:03:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1784 transitions. [2018-10-24 16:03:26,180 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1784 transitions. Word has length 134 [2018-10-24 16:03:26,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:26,181 INFO L481 AbstractCegarLoop]: Abstraction has 1214 states and 1784 transitions. [2018-10-24 16:03:26,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:03:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1784 transitions. [2018-10-24 16:03:26,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 16:03:26,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:26,189 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:03:26,190 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:26,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:26,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1350667100, now seen corresponding path program 1 times [2018-10-24 16:03:26,190 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:26,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:26,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:26,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:26,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:26,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:03:26,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:03:26,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:03:26,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:03:26,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:26,492 INFO L87 Difference]: Start difference. First operand 1214 states and 1784 transitions. Second operand 4 states. [2018-10-24 16:03:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:31,109 INFO L93 Difference]: Finished difference Result 4657 states and 6912 transitions. [2018-10-24 16:03:31,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:03:31,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2018-10-24 16:03:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:31,128 INFO L225 Difference]: With dead ends: 4657 [2018-10-24 16:03:31,128 INFO L226 Difference]: Without dead ends: 3445 [2018-10-24 16:03:31,131 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 16:03:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2018-10-24 16:03:31,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 3445. [2018-10-24 16:03:31,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3445 states. [2018-10-24 16:03:31,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4375 transitions. [2018-10-24 16:03:31,194 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4375 transitions. Word has length 137 [2018-10-24 16:03:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:31,195 INFO L481 AbstractCegarLoop]: Abstraction has 3445 states and 4375 transitions. [2018-10-24 16:03:31,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:03:31,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4375 transitions. [2018-10-24 16:03:31,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-24 16:03:31,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:31,206 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:03:31,206 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:31,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:31,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1831025348, now seen corresponding path program 1 times [2018-10-24 16:03:31,207 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:31,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:31,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:31,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:31,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:31,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:03:31,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:03:31,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:03:31,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:03:31,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:31,423 INFO L87 Difference]: Start difference. First operand 3445 states and 4375 transitions. Second operand 4 states. [2018-10-24 16:03:36,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:36,354 INFO L93 Difference]: Finished difference Result 8946 states and 11898 transitions. [2018-10-24 16:03:36,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:03:36,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 193 [2018-10-24 16:03:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:36,381 INFO L225 Difference]: With dead ends: 8946 [2018-10-24 16:03:36,381 INFO L226 Difference]: Without dead ends: 5688 [2018-10-24 16:03:36,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:36,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5688 states. [2018-10-24 16:03:36,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5688 to 4553. [2018-10-24 16:03:36,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4553 states. [2018-10-24 16:03:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 5726 transitions. [2018-10-24 16:03:36,480 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 5726 transitions. Word has length 193 [2018-10-24 16:03:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:36,482 INFO L481 AbstractCegarLoop]: Abstraction has 4553 states and 5726 transitions. [2018-10-24 16:03:36,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:03:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 5726 transitions. [2018-10-24 16:03:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-24 16:03:36,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:36,491 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, 3, 3, 3, 3, 3, 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] [2018-10-24 16:03:36,491 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:36,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:36,492 INFO L82 PathProgramCache]: Analyzing trace with hash 85662971, now seen corresponding path program 1 times [2018-10-24 16:03:36,492 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:36,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:36,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:36,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:36,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 16:03:36,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:03:36,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:03:36,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:03:36,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:03:36,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:36,918 INFO L87 Difference]: Start difference. First operand 4553 states and 5726 transitions. Second operand 4 states. [2018-10-24 16:03:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:39,585 INFO L93 Difference]: Finished difference Result 10416 states and 13222 transitions. [2018-10-24 16:03:39,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:03:39,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 248 [2018-10-24 16:03:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:39,607 INFO L225 Difference]: With dead ends: 10416 [2018-10-24 16:03:39,608 INFO L226 Difference]: Without dead ends: 6050 [2018-10-24 16:03:39,614 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 16:03:39,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2018-10-24 16:03:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 6033. [2018-10-24 16:03:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6033 states. [2018-10-24 16:03:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6033 states to 6033 states and 7378 transitions. [2018-10-24 16:03:39,710 INFO L78 Accepts]: Start accepts. Automaton has 6033 states and 7378 transitions. Word has length 248 [2018-10-24 16:03:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:39,710 INFO L481 AbstractCegarLoop]: Abstraction has 6033 states and 7378 transitions. [2018-10-24 16:03:39,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:03:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 6033 states and 7378 transitions. [2018-10-24 16:03:39,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-24 16:03:39,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:39,719 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, 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, 1, 1, 1, 1, 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 16:03:39,719 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:39,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:39,721 INFO L82 PathProgramCache]: Analyzing trace with hash 327685741, now seen corresponding path program 1 times [2018-10-24 16:03:39,721 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:39,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:39,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:39,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:39,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 125 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:40,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:03:40,192 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 16:03:40,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:40,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:03:41,090 WARN L179 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 28 [2018-10-24 16:03:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 125 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:41,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:03:41,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-24 16:03:41,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:03:41,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:03:41,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:03:41,872 INFO L87 Difference]: Start difference. First operand 6033 states and 7378 transitions. Second operand 7 states. [2018-10-24 16:03:42,083 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-24 16:03:53,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:53,025 INFO L93 Difference]: Finished difference Result 19327 states and 23714 transitions. [2018-10-24 16:03:53,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:03:53,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2018-10-24 16:03:53,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:53,083 INFO L225 Difference]: With dead ends: 19327 [2018-10-24 16:03:53,083 INFO L226 Difference]: Without dead ends: 12361 [2018-10-24 16:03:53,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 266 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:03:53,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12361 states. [2018-10-24 16:03:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12361 to 12162. [2018-10-24 16:03:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12162 states. [2018-10-24 16:03:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12162 states to 12162 states and 14038 transitions. [2018-10-24 16:03:53,345 INFO L78 Accepts]: Start accepts. Automaton has 12162 states and 14038 transitions. Word has length 269 [2018-10-24 16:03:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:53,345 INFO L481 AbstractCegarLoop]: Abstraction has 12162 states and 14038 transitions. [2018-10-24 16:03:53,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:03:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 12162 states and 14038 transitions. [2018-10-24 16:03:53,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-24 16:03:53,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:53,356 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:03:53,356 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:53,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:53,357 INFO L82 PathProgramCache]: Analyzing trace with hash 689386222, now seen corresponding path program 1 times [2018-10-24 16:03:53,357 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:53,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:53,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:53,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:53,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:53,908 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 16:03:54,528 WARN L179 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-10-24 16:03:55,077 WARN L179 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-10-24 16:03:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 124 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:55,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:03:55,531 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 16:03:55,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:55,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:03:56,031 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 16:03:56,308 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-10-24 16:03:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 75 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:56,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:03:56,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2018-10-24 16:03:56,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 16:03:56,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 16:03:56,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:03:56,637 INFO L87 Difference]: Start difference. First operand 12162 states and 14038 transitions. Second operand 13 states. [2018-10-24 16:04:10,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:10,834 INFO L93 Difference]: Finished difference Result 30649 states and 35550 transitions. [2018-10-24 16:04:10,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 16:04:10,834 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 281 [2018-10-24 16:04:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:10,866 INFO L225 Difference]: With dead ends: 30649 [2018-10-24 16:04:10,867 INFO L226 Difference]: Without dead ends: 18116 [2018-10-24 16:04:10,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 277 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2018-10-24 16:04:10,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18116 states. [2018-10-24 16:04:11,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18116 to 14921. [2018-10-24 16:04:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14921 states. [2018-10-24 16:04:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14921 states to 14921 states and 17053 transitions. [2018-10-24 16:04:11,117 INFO L78 Accepts]: Start accepts. Automaton has 14921 states and 17053 transitions. Word has length 281 [2018-10-24 16:04:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:11,119 INFO L481 AbstractCegarLoop]: Abstraction has 14921 states and 17053 transitions. [2018-10-24 16:04:11,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 16:04:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 14921 states and 17053 transitions. [2018-10-24 16:04:11,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-24 16:04:11,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:11,131 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:04:11,131 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:11,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:11,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1558528585, now seen corresponding path program 1 times [2018-10-24 16:04:11,132 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:11,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:11,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:11,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:11,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:11,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:11,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:04:11,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:11,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:11,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:11,530 INFO L87 Difference]: Start difference. First operand 14921 states and 17053 transitions. Second operand 4 states. [2018-10-24 16:04:14,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:14,025 INFO L93 Difference]: Finished difference Result 29843 states and 34114 transitions. [2018-10-24 16:04:14,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:14,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 300 [2018-10-24 16:04:14,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:14,049 INFO L225 Difference]: With dead ends: 29843 [2018-10-24 16:04:14,049 INFO L226 Difference]: Without dead ends: 15109 [2018-10-24 16:04:14,064 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 16:04:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15109 states. [2018-10-24 16:04:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15109 to 14551. [2018-10-24 16:04:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14551 states. [2018-10-24 16:04:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14551 states to 14551 states and 16531 transitions. [2018-10-24 16:04:14,259 INFO L78 Accepts]: Start accepts. Automaton has 14551 states and 16531 transitions. Word has length 300 [2018-10-24 16:04:14,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:14,259 INFO L481 AbstractCegarLoop]: Abstraction has 14551 states and 16531 transitions. [2018-10-24 16:04:14,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 14551 states and 16531 transitions. [2018-10-24 16:04:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-24 16:04:14,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:14,276 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 16:04:14,276 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:14,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:14,277 INFO L82 PathProgramCache]: Analyzing trace with hash -615858705, now seen corresponding path program 1 times [2018-10-24 16:04:14,277 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:14,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:14,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:14,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:14,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 16:04:14,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:14,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:04:14,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:14,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:14,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:14,603 INFO L87 Difference]: Start difference. First operand 14551 states and 16531 transitions. Second operand 4 states. [2018-10-24 16:04:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:16,421 INFO L93 Difference]: Finished difference Result 28931 states and 32888 transitions. [2018-10-24 16:04:16,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:16,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 350 [2018-10-24 16:04:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:16,445 INFO L225 Difference]: With dead ends: 28931 [2018-10-24 16:04:16,445 INFO L226 Difference]: Without dead ends: 14567 [2018-10-24 16:04:16,459 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 16:04:16,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14567 states. [2018-10-24 16:04:16,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14567 to 13808. [2018-10-24 16:04:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13808 states. [2018-10-24 16:04:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13808 states to 13808 states and 15503 transitions. [2018-10-24 16:04:16,628 INFO L78 Accepts]: Start accepts. Automaton has 13808 states and 15503 transitions. Word has length 350 [2018-10-24 16:04:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:16,629 INFO L481 AbstractCegarLoop]: Abstraction has 13808 states and 15503 transitions. [2018-10-24 16:04:16,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 13808 states and 15503 transitions. [2018-10-24 16:04:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-24 16:04:16,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:16,648 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:04:16,648 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:16,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1002755243, now seen corresponding path program 1 times [2018-10-24 16:04:16,649 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:16,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:16,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:16,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:16,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:17,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:04:17,572 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:04:17,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:17,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:04:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 125 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:18,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:04:18,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-24 16:04:18,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:04:18,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:04:18,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:04:18,061 INFO L87 Difference]: Start difference. First operand 13808 states and 15503 transitions. Second operand 9 states. [2018-10-24 16:04:24,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:24,119 INFO L93 Difference]: Finished difference Result 44512 states and 50268 transitions. [2018-10-24 16:04:24,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:04:24,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 365 [2018-10-24 16:04:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:24,151 INFO L225 Difference]: With dead ends: 44512 [2018-10-24 16:04:24,151 INFO L226 Difference]: Without dead ends: 28836 [2018-10-24 16:04:24,167 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 361 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:04:24,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28836 states. [2018-10-24 16:04:24,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28836 to 22160. [2018-10-24 16:04:24,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22160 states. [2018-10-24 16:04:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22160 states to 22160 states and 24560 transitions. [2018-10-24 16:04:24,494 INFO L78 Accepts]: Start accepts. Automaton has 22160 states and 24560 transitions. Word has length 365 [2018-10-24 16:04:24,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:24,495 INFO L481 AbstractCegarLoop]: Abstraction has 22160 states and 24560 transitions. [2018-10-24 16:04:24,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:04:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand 22160 states and 24560 transitions. [2018-10-24 16:04:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-10-24 16:04:24,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:24,512 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:04:24,513 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:24,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:24,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1409294431, now seen corresponding path program 1 times [2018-10-24 16:04:24,513 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:24,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:24,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:24,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:24,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:25,035 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:04:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-24 16:04:25,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:25,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:04:25,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:04:25,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:04:25,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:04:25,104 INFO L87 Difference]: Start difference. First operand 22160 states and 24560 transitions. Second operand 5 states. [2018-10-24 16:04:29,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:29,034 INFO L93 Difference]: Finished difference Result 47098 states and 52558 transitions. [2018-10-24 16:04:29,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:04:29,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 373 [2018-10-24 16:04:29,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:29,057 INFO L225 Difference]: With dead ends: 47098 [2018-10-24 16:04:29,057 INFO L226 Difference]: Without dead ends: 25125 [2018-10-24 16:04:29,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:04:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25125 states. [2018-10-24 16:04:29,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25125 to 23638. [2018-10-24 16:04:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23638 states. [2018-10-24 16:04:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23638 states to 23638 states and 25738 transitions. [2018-10-24 16:04:29,372 INFO L78 Accepts]: Start accepts. Automaton has 23638 states and 25738 transitions. Word has length 373 [2018-10-24 16:04:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:29,372 INFO L481 AbstractCegarLoop]: Abstraction has 23638 states and 25738 transitions. [2018-10-24 16:04:29,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:04:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 23638 states and 25738 transitions. [2018-10-24 16:04:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-24 16:04:29,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:29,385 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-10-24 16:04:29,385 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:29,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:29,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1929324361, now seen corresponding path program 1 times [2018-10-24 16:04:29,385 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:29,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:29,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:29,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:29,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 188 proven. 181 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-24 16:04:29,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:04:29,801 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:04:29,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:29,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:04:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 97 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:31,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:04:31,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2018-10-24 16:04:31,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:04:31,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:04:31,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:04:31,926 INFO L87 Difference]: Start difference. First operand 23638 states and 25738 transitions. Second operand 9 states. [2018-10-24 16:05:04,286 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2018-10-24 16:05:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:13,487 INFO L93 Difference]: Finished difference Result 58955 states and 64368 transitions. [2018-10-24 16:05:13,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-24 16:05:13,488 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 377 [2018-10-24 16:05:13,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:13,517 INFO L225 Difference]: With dead ends: 58955 [2018-10-24 16:05:13,517 INFO L226 Difference]: Without dead ends: 32327 [2018-10-24 16:05:13,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2018-10-24 16:05:13,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32327 states. [2018-10-24 16:05:13,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32327 to 22683. [2018-10-24 16:05:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22683 states. [2018-10-24 16:05:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22683 states to 22683 states and 24321 transitions. [2018-10-24 16:05:13,810 INFO L78 Accepts]: Start accepts. Automaton has 22683 states and 24321 transitions. Word has length 377 [2018-10-24 16:05:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:13,811 INFO L481 AbstractCegarLoop]: Abstraction has 22683 states and 24321 transitions. [2018-10-24 16:05:13,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:05:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 22683 states and 24321 transitions. [2018-10-24 16:05:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-10-24 16:05:13,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:13,824 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:05:13,824 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:13,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:13,825 INFO L82 PathProgramCache]: Analyzing trace with hash 151943040, now seen corresponding path program 1 times [2018-10-24 16:05:13,825 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:13,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:13,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:13,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:13,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:14,335 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 16:05:14,756 WARN L179 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2018-10-24 16:05:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 278 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:15,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:05:15,251 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:05:15,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:15,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:05:15,901 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 16:05:16,261 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 22 [2018-10-24 16:05:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 287 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:16,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:05:16,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2018-10-24 16:05:16,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 16:05:16,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 16:05:16,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:05:16,899 INFO L87 Difference]: Start difference. First operand 22683 states and 24321 transitions. Second operand 12 states. [2018-10-24 16:05:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:24,992 INFO L93 Difference]: Finished difference Result 47032 states and 50341 transitions. [2018-10-24 16:05:24,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 16:05:24,992 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 419 [2018-10-24 16:05:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:25,021 INFO L225 Difference]: With dead ends: 47032 [2018-10-24 16:05:25,021 INFO L226 Difference]: Without dead ends: 27316 [2018-10-24 16:05:25,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 415 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2018-10-24 16:05:25,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27316 states. [2018-10-24 16:05:25,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27316 to 21567. [2018-10-24 16:05:25,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21567 states. [2018-10-24 16:05:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21567 states to 21567 states and 23067 transitions. [2018-10-24 16:05:25,291 INFO L78 Accepts]: Start accepts. Automaton has 21567 states and 23067 transitions. Word has length 419 [2018-10-24 16:05:25,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:25,292 INFO L481 AbstractCegarLoop]: Abstraction has 21567 states and 23067 transitions. [2018-10-24 16:05:25,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 16:05:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 21567 states and 23067 transitions. [2018-10-24 16:05:25,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-10-24 16:05:25,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:25,304 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:05:25,304 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:25,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:25,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1564812022, now seen corresponding path program 1 times [2018-10-24 16:05:25,305 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:25,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:25,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:25,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:25,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 154 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:25,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:05:25,811 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:05:25,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:25,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:05:28,437 WARN L179 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2018-10-24 16:05:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 279 proven. 233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:29,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:05:29,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-24 16:05:29,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:05:29,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:05:29,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=62, Unknown=1, NotChecked=0, Total=90 [2018-10-24 16:05:29,914 INFO L87 Difference]: Start difference. First operand 21567 states and 23067 transitions. Second operand 10 states. [2018-10-24 16:05:31,119 WARN L179 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 16:05:33,664 WARN L179 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 Received shutdown request... [2018-10-24 16:07:23,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 16:07:23,232 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:07:23,238 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:07:23,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:07:23 BoogieIcfgContainer [2018-10-24 16:07:23,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:07:23,240 INFO L168 Benchmark]: Toolchain (without parser) took 251307.58 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -639.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:07:23,241 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 16:07:23,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 871.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:07:23,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 266.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -849.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:07:23,243 INFO L168 Benchmark]: Boogie Preprocessor took 171.47 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:07:23,244 INFO L168 Benchmark]: RCFGBuilder took 4840.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 184.4 MB). Peak memory consumption was 184.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:07:23,245 INFO L168 Benchmark]: TraceAbstraction took 245148.06 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -52.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 16:07:23,249 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 871.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 266.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -849.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 171.47 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4840.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 184.4 MB). Peak memory consumption was 184.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245148.06 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -52.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 198). Cancelled while BasicCegarLoop was constructing difference of abstraction (21567states) and FLOYD_HOARE automaton (currently 19 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (24682 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 245.0s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 222.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2622 SDtfs, 15128 SDslu, 3017 SDs, 0 SdLazy, 48402 SolverSat, 6738 SolverUnsat, 136 SolverUnknown, 0 SolverNotchecked, 203.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2294 GetRequests, 2163 SyntacticMatches, 11 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 16.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23638occurred 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: 2.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 29645 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 6148 NumberOfCodeBlocks, 6148 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 6128 ConstructedInterpolants, 751 QuantifiedInterpolants, 19283900 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2838 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 3443/5787 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown