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/Problem18_label52_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:40:56,820 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:40:56,829 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:40:56,844 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:40:56,844 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:40:56,845 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:40:56,847 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:40:56,848 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:40:56,850 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:40:56,851 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:40:56,852 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:40:56,852 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:40:56,853 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:40:56,854 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:40:56,855 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:40:56,856 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:40:56,857 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:40:56,859 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:40:56,861 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:40:56,863 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:40:56,864 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:40:56,865 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:40:56,868 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:40:56,868 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:40:56,869 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:40:56,870 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:40:56,871 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:40:56,872 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:40:56,873 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:40:56,874 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:40:56,874 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:40:56,875 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:40:56,875 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:40:56,875 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:40:56,876 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:40:56,877 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:40:56,877 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 14:40:56,900 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:40:56,900 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:40:56,901 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:40:56,901 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:40:56,906 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:40:56,906 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:40:56,906 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:40:56,906 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:40:56,907 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:40:56,907 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:40:56,907 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:40:56,907 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:40:56,907 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:40:56,908 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:40:56,908 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:40:56,908 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:40:56,908 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:40:56,908 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:40:56,909 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:40:56,909 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:40:56,909 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:40:56,909 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:40:56,909 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:40:56,910 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:40:56,910 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:40:56,910 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:40:56,910 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:40:56,910 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:40:56,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:40:56,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:40:56,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:40:56,992 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:40:56,992 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:40:56,993 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label52_false-unreach-call.c [2018-10-24 14:40:57,059 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6dbbaa80/ae65aa60f3c14e4092391decf1bfa235/FLAG2fcfb1c29 [2018-10-24 14:40:57,748 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:40:57,749 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label52_false-unreach-call.c [2018-10-24 14:40:57,782 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6dbbaa80/ae65aa60f3c14e4092391decf1bfa235/FLAG2fcfb1c29 [2018-10-24 14:40:57,803 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6dbbaa80/ae65aa60f3c14e4092391decf1bfa235 [2018-10-24 14:40:57,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:40:57,820 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:40:57,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:40:57,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:40:57,828 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:40:57,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:40:57" (1/1) ... [2018-10-24 14:40:57,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba4e0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:57, skipping insertion in model container [2018-10-24 14:40:57,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:40:57" (1/1) ... [2018-10-24 14:40:57,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:40:57,988 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:40:59,111 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:40:59,116 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:40:59,594 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:40:59,626 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:40:59,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59 WrapperNode [2018-10-24 14:40:59,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:40:59,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:40:59,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:40:59,629 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:40:59,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59" (1/1) ... [2018-10-24 14:40:59,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59" (1/1) ... [2018-10-24 14:41:00,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:41:00,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:41:00,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:41:00,153 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:41:00,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59" (1/1) ... [2018-10-24 14:41:00,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59" (1/1) ... [2018-10-24 14:41:00,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59" (1/1) ... [2018-10-24 14:41:00,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59" (1/1) ... [2018-10-24 14:41:00,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59" (1/1) ... [2018-10-24 14:41:00,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59" (1/1) ... [2018-10-24 14:41:00,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59" (1/1) ... [2018-10-24 14:41:00,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:41:00,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:41:00,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:41:00,361 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:41:00,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59" (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 14:41:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:41:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:41:00,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:41:08,545 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:41:08,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:41:08 BoogieIcfgContainer [2018-10-24 14:41:08,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:41:08,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:41:08,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:41:08,551 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:41:08,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:40:57" (1/3) ... [2018-10-24 14:41:08,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbc1ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:41:08, skipping insertion in model container [2018-10-24 14:41:08,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:59" (2/3) ... [2018-10-24 14:41:08,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbc1ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:41:08, skipping insertion in model container [2018-10-24 14:41:08,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:41:08" (3/3) ... [2018-10-24 14:41:08,556 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label52_false-unreach-call.c [2018-10-24 14:41:08,566 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:41:08,574 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:41:08,592 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:41:08,635 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:41:08,636 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:41:08,636 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:41:08,636 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:41:08,636 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:41:08,636 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:41:08,637 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:41:08,637 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:41:08,637 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:41:08,671 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-24 14:41:08,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 14:41:08,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:08,680 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:08,682 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:08,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:08,688 INFO L82 PathProgramCache]: Analyzing trace with hash -809652462, now seen corresponding path program 1 times [2018-10-24 14:41:08,690 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:08,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:08,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:08,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:08,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:09,072 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:41:09,141 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 14:41:09,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:09,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:41:09,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:09,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:09,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:09,162 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-24 14:41:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:19,302 INFO L93 Difference]: Finished difference Result 2902 states and 5650 transitions. [2018-10-24 14:41:19,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:41:19,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-10-24 14:41:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:19,347 INFO L225 Difference]: With dead ends: 2902 [2018-10-24 14:41:19,347 INFO L226 Difference]: Without dead ends: 2137 [2018-10-24 14:41:19,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:19,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2018-10-24 14:41:19,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2018-10-24 14:41:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2018-10-24 14:41:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3734 transitions. [2018-10-24 14:41:19,530 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3734 transitions. Word has length 17 [2018-10-24 14:41:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:19,530 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3734 transitions. [2018-10-24 14:41:19,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:41:19,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3734 transitions. [2018-10-24 14:41:19,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 14:41:19,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:19,538 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:19,539 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:19,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:19,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1345110262, now seen corresponding path program 1 times [2018-10-24 14:41:19,540 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:19,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:19,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:19,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:19,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:41:19,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:19,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:41:19,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:19,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:19,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:19,896 INFO L87 Difference]: Start difference. First operand 2137 states and 3734 transitions. Second operand 4 states. [2018-10-24 14:41:28,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:28,684 INFO L93 Difference]: Finished difference Result 8418 states and 14808 transitions. [2018-10-24 14:41:28,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:41:28,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2018-10-24 14:41:28,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:28,719 INFO L225 Difference]: With dead ends: 8418 [2018-10-24 14:41:28,719 INFO L226 Difference]: Without dead ends: 6283 [2018-10-24 14:41:28,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:28,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6283 states. [2018-10-24 14:41:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6283 to 6283. [2018-10-24 14:41:28,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6283 states. [2018-10-24 14:41:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 9360 transitions. [2018-10-24 14:41:28,859 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 9360 transitions. Word has length 102 [2018-10-24 14:41:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:28,860 INFO L481 AbstractCegarLoop]: Abstraction has 6283 states and 9360 transitions. [2018-10-24 14:41:28,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:41:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 9360 transitions. [2018-10-24 14:41:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-24 14:41:28,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:28,869 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:41:28,869 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:28,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:28,869 INFO L82 PathProgramCache]: Analyzing trace with hash -2002561737, now seen corresponding path program 1 times [2018-10-24 14:41:28,870 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:28,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:28,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:28,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:28,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 14:41:29,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:29,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:41:29,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:41:29,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:41:29,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:41:29,201 INFO L87 Difference]: Start difference. First operand 6283 states and 9360 transitions. Second operand 4 states. [2018-10-24 14:41:39,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:39,549 INFO L93 Difference]: Finished difference Result 23636 states and 35291 transitions. [2018-10-24 14:41:39,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:41:39,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-10-24 14:41:39,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:39,640 INFO L225 Difference]: With dead ends: 23636 [2018-10-24 14:41:39,640 INFO L226 Difference]: Without dead ends: 17355 [2018-10-24 14:41:39,657 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 14:41:39,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17355 states. [2018-10-24 14:41:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17355 to 12502. [2018-10-24 14:41:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12502 states. [2018-10-24 14:41:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12502 states to 12502 states and 16539 transitions. [2018-10-24 14:41:40,167 INFO L78 Accepts]: Start accepts. Automaton has 12502 states and 16539 transitions. Word has length 157 [2018-10-24 14:41:40,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:40,168 INFO L481 AbstractCegarLoop]: Abstraction has 12502 states and 16539 transitions. [2018-10-24 14:41:40,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:41:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 12502 states and 16539 transitions. [2018-10-24 14:41:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-24 14:41:40,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:40,179 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:40,179 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:40,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:40,180 INFO L82 PathProgramCache]: Analyzing trace with hash 479069292, now seen corresponding path program 1 times [2018-10-24 14:41:40,180 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:40,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:40,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:40,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:40,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:40,798 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-10-24 14:41:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 14:41:41,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:41:41,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:41:41,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:41:41,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:41:41,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:41:41,079 INFO L87 Difference]: Start difference. First operand 12502 states and 16539 transitions. Second operand 5 states. [2018-10-24 14:41:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:41:50,110 INFO L93 Difference]: Finished difference Result 36058 states and 47103 transitions. [2018-10-24 14:41:50,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:41:50,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2018-10-24 14:41:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:41:50,167 INFO L225 Difference]: With dead ends: 36058 [2018-10-24 14:41:50,167 INFO L226 Difference]: Without dead ends: 23558 [2018-10-24 14:41:50,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:41:50,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23558 states. [2018-10-24 14:41:50,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23558 to 20103. [2018-10-24 14:41:50,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20103 states. [2018-10-24 14:41:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20103 states to 20103 states and 24657 transitions. [2018-10-24 14:41:50,525 INFO L78 Accepts]: Start accepts. Automaton has 20103 states and 24657 transitions. Word has length 227 [2018-10-24 14:41:50,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:41:50,526 INFO L481 AbstractCegarLoop]: Abstraction has 20103 states and 24657 transitions. [2018-10-24 14:41:50,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:41:50,526 INFO L276 IsEmpty]: Start isEmpty. Operand 20103 states and 24657 transitions. [2018-10-24 14:41:50,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-10-24 14:41:50,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:41:50,538 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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 14:41:50,539 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:41:50,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:41:50,539 INFO L82 PathProgramCache]: Analyzing trace with hash -487714139, now seen corresponding path program 1 times [2018-10-24 14:41:50,539 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:41:50,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:41:50,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:50,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:50,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:41:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:51,148 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:41:51,590 WARN L179 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-24 14:41:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 285 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-24 14:41:51,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:41:51,904 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 14:41:51,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:41:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:41:52,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:41:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2018-10-24 14:41:52,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:41:52,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:41:52,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:41:52,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:41:52,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:41:52,361 INFO L87 Difference]: Start difference. First operand 20103 states and 24657 transitions. Second operand 6 states. [2018-10-24 14:42:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:06,724 INFO L93 Difference]: Finished difference Result 58186 states and 71459 transitions. [2018-10-24 14:42:06,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:42:06,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 410 [2018-10-24 14:42:06,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:06,789 INFO L225 Difference]: With dead ends: 58186 [2018-10-24 14:42:06,790 INFO L226 Difference]: Without dead ends: 30434 [2018-10-24 14:42:06,822 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 412 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:42:06,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30434 states. [2018-10-24 14:42:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30434 to 26973. [2018-10-24 14:42:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26973 states. [2018-10-24 14:42:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26973 states to 26973 states and 29360 transitions. [2018-10-24 14:42:07,339 INFO L78 Accepts]: Start accepts. Automaton has 26973 states and 29360 transitions. Word has length 410 [2018-10-24 14:42:07,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:07,340 INFO L481 AbstractCegarLoop]: Abstraction has 26973 states and 29360 transitions. [2018-10-24 14:42:07,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:42:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 26973 states and 29360 transitions. [2018-10-24 14:42:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2018-10-24 14:42:07,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:07,378 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:07,379 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:07,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:07,379 INFO L82 PathProgramCache]: Analyzing trace with hash 801439540, now seen corresponding path program 1 times [2018-10-24 14:42:07,380 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:07,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:07,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:07,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:07,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:08,570 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 14:42:08,982 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-24 14:42:09,509 WARN L179 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-24 14:42:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 30 proven. 419 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-24 14:42:10,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:42:10,893 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 14:42:10,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:11,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:42:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2018-10-24 14:42:11,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:42:11,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-24 14:42:11,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:42:11,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:42:11,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:42:11,652 INFO L87 Difference]: Start difference. First operand 26973 states and 29360 transitions. Second operand 9 states. [2018-10-24 14:42:29,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:29,569 INFO L93 Difference]: Finished difference Result 117806 states and 130992 transitions. [2018-10-24 14:42:29,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 14:42:29,571 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 941 [2018-10-24 14:42:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:29,690 INFO L225 Difference]: With dead ends: 117806 [2018-10-24 14:42:29,690 INFO L226 Difference]: Without dead ends: 91526 [2018-10-24 14:42:29,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 950 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2018-10-24 14:42:29,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91526 states. [2018-10-24 14:42:30,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91526 to 35265. [2018-10-24 14:42:30,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35265 states. [2018-10-24 14:42:30,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35265 states to 35265 states and 38707 transitions. [2018-10-24 14:42:30,865 INFO L78 Accepts]: Start accepts. Automaton has 35265 states and 38707 transitions. Word has length 941 [2018-10-24 14:42:30,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:30,867 INFO L481 AbstractCegarLoop]: Abstraction has 35265 states and 38707 transitions. [2018-10-24 14:42:30,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 14:42:30,867 INFO L276 IsEmpty]: Start isEmpty. Operand 35265 states and 38707 transitions. [2018-10-24 14:42:30,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1164 [2018-10-24 14:42:30,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:30,933 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:30,933 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:30,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:30,934 INFO L82 PathProgramCache]: Analyzing trace with hash -25764603, now seen corresponding path program 1 times [2018-10-24 14:42:30,934 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:30,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:30,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:30,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:30,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:31,891 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 14:42:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 923 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-10-24 14:42:32,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:42:32,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:42:32,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:42:32,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:42:32,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:42:32,571 INFO L87 Difference]: Start difference. First operand 35265 states and 38707 transitions. Second operand 4 states. [2018-10-24 14:42:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:38,101 INFO L93 Difference]: Finished difference Result 97482 states and 108238 transitions. [2018-10-24 14:42:38,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:42:38,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1163 [2018-10-24 14:42:38,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:38,188 INFO L225 Difference]: With dead ends: 97482 [2018-10-24 14:42:38,188 INFO L226 Difference]: Without dead ends: 62910 [2018-10-24 14:42:38,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:42:38,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62910 states. [2018-10-24 14:42:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62910 to 62910. [2018-10-24 14:42:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62910 states. [2018-10-24 14:42:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62910 states to 62910 states and 67813 transitions. [2018-10-24 14:42:38,939 INFO L78 Accepts]: Start accepts. Automaton has 62910 states and 67813 transitions. Word has length 1163 [2018-10-24 14:42:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:38,941 INFO L481 AbstractCegarLoop]: Abstraction has 62910 states and 67813 transitions. [2018-10-24 14:42:38,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:42:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 62910 states and 67813 transitions. [2018-10-24 14:42:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1178 [2018-10-24 14:42:38,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:38,995 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:38,995 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:38,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:38,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1119157346, now seen corresponding path program 1 times [2018-10-24 14:42:38,996 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:38,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:38,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:38,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:38,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 949 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2018-10-24 14:42:40,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:42:40,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:42:40,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:42:40,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:42:40,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:42:40,326 INFO L87 Difference]: Start difference. First operand 62910 states and 67813 transitions. Second operand 4 states. [2018-10-24 14:42:45,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:45,813 INFO L93 Difference]: Finished difference Result 160368 states and 173172 transitions. [2018-10-24 14:42:45,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:42:45,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1177 [2018-10-24 14:42:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:45,931 INFO L225 Difference]: With dead ends: 160368 [2018-10-24 14:42:45,932 INFO L226 Difference]: Without dead ends: 98151 [2018-10-24 14:42:45,990 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 14:42:46,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98151 states. [2018-10-24 14:42:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98151 to 96769. [2018-10-24 14:42:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96769 states. [2018-10-24 14:42:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96769 states to 96769 states and 103125 transitions. [2018-10-24 14:42:46,917 INFO L78 Accepts]: Start accepts. Automaton has 96769 states and 103125 transitions. Word has length 1177 [2018-10-24 14:42:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:46,918 INFO L481 AbstractCegarLoop]: Abstraction has 96769 states and 103125 transitions. [2018-10-24 14:42:46,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:42:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 96769 states and 103125 transitions. [2018-10-24 14:42:46,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1214 [2018-10-24 14:42:46,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:46,947 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:46,947 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:46,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:46,948 INFO L82 PathProgramCache]: Analyzing trace with hash 941859746, now seen corresponding path program 1 times [2018-10-24 14:42:46,949 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:46,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:46,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:46,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:46,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:47,815 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:42:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1636 backedges. 1020 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2018-10-24 14:42:48,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:42:48,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:42:48,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:42:48,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:42:48,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:42:48,912 INFO L87 Difference]: Start difference. First operand 96769 states and 103125 transitions. Second operand 4 states. [2018-10-24 14:42:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:42:53,952 INFO L93 Difference]: Finished difference Result 196991 states and 209761 transitions. [2018-10-24 14:42:53,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:42:53,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1213 [2018-10-24 14:42:53,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:42:54,081 INFO L225 Difference]: With dead ends: 196991 [2018-10-24 14:42:54,082 INFO L226 Difference]: Without dead ends: 100915 [2018-10-24 14:42:54,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:42:54,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100915 states. [2018-10-24 14:42:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100915 to 99533. [2018-10-24 14:42:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99533 states. [2018-10-24 14:42:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99533 states to 99533 states and 104529 transitions. [2018-10-24 14:42:55,530 INFO L78 Accepts]: Start accepts. Automaton has 99533 states and 104529 transitions. Word has length 1213 [2018-10-24 14:42:55,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:42:55,531 INFO L481 AbstractCegarLoop]: Abstraction has 99533 states and 104529 transitions. [2018-10-24 14:42:55,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:42:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 99533 states and 104529 transitions. [2018-10-24 14:42:55,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1355 [2018-10-24 14:42:55,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:42:55,566 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:42:55,567 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:42:55,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:42:55,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1638611681, now seen corresponding path program 1 times [2018-10-24 14:42:55,567 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:42:55,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:42:55,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:55,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:42:55,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:42:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:42:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 781 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2018-10-24 14:42:57,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:42:57,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:42:57,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:42:57,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:42:57,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:42:57,558 INFO L87 Difference]: Start difference. First operand 99533 states and 104529 transitions. Second operand 4 states. [2018-10-24 14:43:02,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:43:02,359 INFO L93 Difference]: Finished difference Result 212193 states and 222875 transitions. [2018-10-24 14:43:02,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:43:02,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1354 [2018-10-24 14:43:02,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:43:02,498 INFO L225 Difference]: With dead ends: 212193 [2018-10-24 14:43:02,498 INFO L226 Difference]: Without dead ends: 113353 [2018-10-24 14:43:02,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:43:02,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113353 states. [2018-10-24 14:43:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113353 to 111971. [2018-10-24 14:43:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111971 states. [2018-10-24 14:43:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111971 states to 111971 states and 116643 transitions. [2018-10-24 14:43:03,608 INFO L78 Accepts]: Start accepts. Automaton has 111971 states and 116643 transitions. Word has length 1354 [2018-10-24 14:43:03,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:43:03,609 INFO L481 AbstractCegarLoop]: Abstraction has 111971 states and 116643 transitions. [2018-10-24 14:43:03,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:43:03,609 INFO L276 IsEmpty]: Start isEmpty. Operand 111971 states and 116643 transitions. [2018-10-24 14:43:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1460 [2018-10-24 14:43:03,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:43:03,648 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:03,649 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:43:03,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:43:03,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1015955712, now seen corresponding path program 1 times [2018-10-24 14:43:03,649 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:43:03,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:43:03,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:03,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:03,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:05,462 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-24 14:43:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2847 backedges. 1479 proven. 1047 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-24 14:43:09,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:43:09,015 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 14:43:09,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:09,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:43:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2847 backedges. 1780 proven. 0 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2018-10-24 14:43:10,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:43:10,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-24 14:43:10,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 14:43:10,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 14:43:10,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:43:10,308 INFO L87 Difference]: Start difference. First operand 111971 states and 116643 transitions. Second operand 12 states. [2018-10-24 14:43:27,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:43:27,415 INFO L93 Difference]: Finished difference Result 260543 states and 271419 transitions. [2018-10-24 14:43:27,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-24 14:43:27,415 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1459 [2018-10-24 14:43:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:43:27,580 INFO L225 Difference]: With dead ends: 260543 [2018-10-24 14:43:27,580 INFO L226 Difference]: Without dead ends: 149265 [2018-10-24 14:43:27,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1502 GetRequests, 1472 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2018-10-24 14:43:27,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149265 states. [2018-10-24 14:43:28,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149265 to 105056. [2018-10-24 14:43:28,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105056 states. [2018-10-24 14:43:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105056 states to 105056 states and 107945 transitions. [2018-10-24 14:43:28,720 INFO L78 Accepts]: Start accepts. Automaton has 105056 states and 107945 transitions. Word has length 1459 [2018-10-24 14:43:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:43:28,721 INFO L481 AbstractCegarLoop]: Abstraction has 105056 states and 107945 transitions. [2018-10-24 14:43:28,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 14:43:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 105056 states and 107945 transitions. [2018-10-24 14:43:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1484 [2018-10-24 14:43:28,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:43:28,753 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:43:28,754 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:43:28,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:43:28,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1795957083, now seen corresponding path program 1 times [2018-10-24 14:43:28,755 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:43:28,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:43:28,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:28,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:28,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 515 proven. 0 refuted. 0 times theorem prover too weak. 1630 trivial. 0 not checked. [2018-10-24 14:43:31,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:43:31,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:43:31,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:43:31,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:43:31,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:43:31,412 INFO L87 Difference]: Start difference. First operand 105056 states and 107945 transitions. Second operand 4 states. [2018-10-24 14:43:36,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:43:36,443 INFO L93 Difference]: Finished difference Result 209419 states and 215196 transitions. [2018-10-24 14:43:36,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:43:36,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1483 [2018-10-24 14:43:36,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:43:36,539 INFO L225 Difference]: With dead ends: 209419 [2018-10-24 14:43:36,539 INFO L226 Difference]: Without dead ends: 96056 [2018-10-24 14:43:36,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:43:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96056 states. [2018-10-24 14:43:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96056 to 95365. [2018-10-24 14:43:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95365 states. [2018-10-24 14:43:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95365 states to 95365 states and 97284 transitions. [2018-10-24 14:43:37,518 INFO L78 Accepts]: Start accepts. Automaton has 95365 states and 97284 transitions. Word has length 1483 [2018-10-24 14:43:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:43:37,519 INFO L481 AbstractCegarLoop]: Abstraction has 95365 states and 97284 transitions. [2018-10-24 14:43:37,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:43:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 95365 states and 97284 transitions. [2018-10-24 14:43:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1547 [2018-10-24 14:43:37,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:43:37,550 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:43:37,551 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:43:37,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:43:37,551 INFO L82 PathProgramCache]: Analyzing trace with hash 49121253, now seen corresponding path program 1 times [2018-10-24 14:43:37,551 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:43:37,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:43:37,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:37,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:37,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:43:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 1700 proven. 70 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2018-10-24 14:43:40,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:43:40,224 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 14:43:40,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:43:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:43:40,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:43:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 1877 trivial. 0 not checked. [2018-10-24 14:43:42,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:43:42,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 14:43:42,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:43:42,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:43:42,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:43:42,650 INFO L87 Difference]: Start difference. First operand 95365 states and 97284 transitions. Second operand 5 states. [2018-10-24 14:44:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:08,839 INFO L93 Difference]: Finished difference Result 205929 states and 210109 transitions. [2018-10-24 14:44:08,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:44:08,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1546 [2018-10-24 14:44:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:08,954 INFO L225 Difference]: With dead ends: 205929 [2018-10-24 14:44:08,954 INFO L226 Difference]: Without dead ends: 111257 [2018-10-24 14:44:09,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1554 GetRequests, 1548 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:44:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111257 states. [2018-10-24 14:44:10,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111257 to 105038. [2018-10-24 14:44:10,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105038 states. [2018-10-24 14:44:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105038 states to 105038 states and 106881 transitions. [2018-10-24 14:44:10,093 INFO L78 Accepts]: Start accepts. Automaton has 105038 states and 106881 transitions. Word has length 1546 [2018-10-24 14:44:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:10,094 INFO L481 AbstractCegarLoop]: Abstraction has 105038 states and 106881 transitions. [2018-10-24 14:44:10,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:44:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 105038 states and 106881 transitions. [2018-10-24 14:44:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2018-10-24 14:44:10,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:10,138 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:44:10,138 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:10,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:10,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1113072581, now seen corresponding path program 1 times [2018-10-24 14:44:10,139 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:10,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:10,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:10,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:10,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3392 backedges. 2161 proven. 0 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2018-10-24 14:44:12,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:44:12,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:44:12,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:44:12,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:44:12,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:44:12,167 INFO L87 Difference]: Start difference. First operand 105038 states and 106881 transitions. Second operand 4 states. [2018-10-24 14:44:16,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:16,940 INFO L93 Difference]: Finished difference Result 208692 states and 212366 transitions. [2018-10-24 14:44:16,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:44:16,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1688 [2018-10-24 14:44:16,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:17,044 INFO L225 Difference]: With dead ends: 208692 [2018-10-24 14:44:17,045 INFO L226 Difference]: Without dead ends: 104347 [2018-10-24 14:44:17,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 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 14:44:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104347 states. [2018-10-24 14:44:18,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104347 to 103656. [2018-10-24 14:44:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103656 states. [2018-10-24 14:44:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103656 states to 103656 states and 105126 transitions. [2018-10-24 14:44:18,124 INFO L78 Accepts]: Start accepts. Automaton has 103656 states and 105126 transitions. Word has length 1688 [2018-10-24 14:44:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:18,125 INFO L481 AbstractCegarLoop]: Abstraction has 103656 states and 105126 transitions. [2018-10-24 14:44:18,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:44:18,125 INFO L276 IsEmpty]: Start isEmpty. Operand 103656 states and 105126 transitions. [2018-10-24 14:44:18,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1707 [2018-10-24 14:44:18,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:18,176 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:44:18,177 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:18,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:18,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1345634122, now seen corresponding path program 1 times [2018-10-24 14:44:18,178 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:18,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:18,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:18,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:18,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2801 backedges. 2213 proven. 0 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2018-10-24 14:44:22,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:44:22,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:44:22,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:44:22,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:44:22,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:44:22,559 INFO L87 Difference]: Start difference. First operand 103656 states and 105126 transitions. Second operand 4 states. [2018-10-24 14:44:27,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:27,212 INFO L93 Difference]: Finished difference Result 226658 states and 229968 transitions. [2018-10-24 14:44:27,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:44:27,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1706 [2018-10-24 14:44:27,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:27,334 INFO L225 Difference]: With dead ends: 226658 [2018-10-24 14:44:27,334 INFO L226 Difference]: Without dead ends: 123003 [2018-10-24 14:44:27,394 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 14:44:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123003 states. [2018-10-24 14:44:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123003 to 119548. [2018-10-24 14:44:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119548 states. [2018-10-24 14:44:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119548 states to 119548 states and 121107 transitions. [2018-10-24 14:44:28,798 INFO L78 Accepts]: Start accepts. Automaton has 119548 states and 121107 transitions. Word has length 1706 [2018-10-24 14:44:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:28,799 INFO L481 AbstractCegarLoop]: Abstraction has 119548 states and 121107 transitions. [2018-10-24 14:44:28,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:44:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 119548 states and 121107 transitions. [2018-10-24 14:44:28,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1724 [2018-10-24 14:44:28,835 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:28,836 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:44:28,836 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:28,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:28,837 INFO L82 PathProgramCache]: Analyzing trace with hash 365289868, now seen corresponding path program 1 times [2018-10-24 14:44:28,837 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:28,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:28,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:28,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:28,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 2791 trivial. 0 not checked. [2018-10-24 14:44:31,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:44:31,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:44:31,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:44:31,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:44:31,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:44:31,127 INFO L87 Difference]: Start difference. First operand 119548 states and 121107 transitions. Second operand 3 states. [2018-10-24 14:44:34,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:34,233 INFO L93 Difference]: Finished difference Result 239785 states and 242919 transitions. [2018-10-24 14:44:34,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:44:34,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1723 [2018-10-24 14:44:34,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:34,345 INFO L225 Difference]: With dead ends: 239785 [2018-10-24 14:44:34,345 INFO L226 Difference]: Without dead ends: 120238 [2018-10-24 14:44:34,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:44:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120238 states. [2018-10-24 14:44:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120238 to 107109. [2018-10-24 14:44:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107109 states. [2018-10-24 14:44:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107109 states to 107109 states and 108417 transitions. [2018-10-24 14:44:35,453 INFO L78 Accepts]: Start accepts. Automaton has 107109 states and 108417 transitions. Word has length 1723 [2018-10-24 14:44:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:35,454 INFO L481 AbstractCegarLoop]: Abstraction has 107109 states and 108417 transitions. [2018-10-24 14:44:35,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:44:35,455 INFO L276 IsEmpty]: Start isEmpty. Operand 107109 states and 108417 transitions. [2018-10-24 14:44:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1728 [2018-10-24 14:44:35,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:35,489 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:44:35,489 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:35,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:35,490 INFO L82 PathProgramCache]: Analyzing trace with hash 166708093, now seen corresponding path program 1 times [2018-10-24 14:44:35,490 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:35,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:35,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:35,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:35,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:44:36,500 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-24 14:44:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3615 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 2919 trivial. 0 not checked. [2018-10-24 14:44:38,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:44:38,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:44:38,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:44:38,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:44:38,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:44:38,054 INFO L87 Difference]: Start difference. First operand 107109 states and 108417 transitions. Second operand 4 states. [2018-10-24 14:44:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:44:42,698 INFO L93 Difference]: Finished difference Result 219744 states and 222434 transitions. [2018-10-24 14:44:42,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:44:42,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1727 [2018-10-24 14:44:42,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:44:42,803 INFO L225 Difference]: With dead ends: 219744 [2018-10-24 14:44:42,803 INFO L226 Difference]: Without dead ends: 113328 [2018-10-24 14:44:42,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:44:42,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113328 states. [2018-10-24 14:44:43,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113328 to 107109. [2018-10-24 14:44:43,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107109 states. [2018-10-24 14:44:43,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107109 states to 107109 states and 108388 transitions. [2018-10-24 14:44:43,793 INFO L78 Accepts]: Start accepts. Automaton has 107109 states and 108388 transitions. Word has length 1727 [2018-10-24 14:44:43,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:44:43,794 INFO L481 AbstractCegarLoop]: Abstraction has 107109 states and 108388 transitions. [2018-10-24 14:44:43,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:44:43,794 INFO L276 IsEmpty]: Start isEmpty. Operand 107109 states and 108388 transitions. [2018-10-24 14:44:43,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1831 [2018-10-24 14:44:43,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:44:43,834 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:44:43,834 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:44:43,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:44:43,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1839974445, now seen corresponding path program 1 times [2018-10-24 14:44:43,835 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:44:43,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:44:43,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:43,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:44:43,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:44:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 14:44:44,451 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-24 14:44:44,454 INFO L168 Benchmark]: Toolchain (without parser) took 226634.96 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 14:44:44,455 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:44:44,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1806.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:44:44,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 524.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -908.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:44:44,457 INFO L168 Benchmark]: Boogie Preprocessor took 207.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:44:44,458 INFO L168 Benchmark]: RCFGBuilder took 8185.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 527.0 MB). Peak memory consumption was 527.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:44:44,459 INFO L168 Benchmark]: TraceAbstraction took 215905.73 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.6 GB in the beginning and 2.7 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 14:44:44,464 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1806.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 524.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -908.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 207.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8185.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 527.0 MB). Peak memory consumption was 527.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215905.73 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.6 GB in the beginning and 2.7 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown