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/Problem12_label48_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:04:44,677 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:04:44,679 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:04:44,694 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:04:44,695 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:04:44,696 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:04:44,699 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:04:44,702 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:04:44,704 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:04:44,706 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:04:44,713 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:04:44,713 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:04:44,714 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:04:44,715 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:04:44,716 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:04:44,717 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:04:44,718 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:04:44,720 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:04:44,721 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:04:44,723 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:04:44,724 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:04:44,725 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:04:44,727 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:04:44,727 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:04:44,727 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:04:44,728 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:04:44,729 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:04:44,730 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:04:44,731 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:04:44,732 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:04:44,732 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:04:44,733 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:04:44,733 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:04:44,733 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:04:44,734 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:04:44,735 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:04:44,735 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 14:04:44,755 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:04:44,755 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:04:44,756 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:04:44,756 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:04:44,757 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:04:44,757 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:04:44,757 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:04:44,758 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:04:44,759 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:04:44,759 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:04:44,759 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:04:44,759 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:04:44,760 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:04:44,760 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:04:44,760 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:04:44,760 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:04:44,760 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:04:44,761 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:04:44,761 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:04:44,761 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:04:44,761 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:04:44,761 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:04:44,762 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:04:44,762 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:04:44,762 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:04:44,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:04:44,762 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:04:44,762 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:04:44,815 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:04:44,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:04:44,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:04:44,837 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:04:44,838 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:04:44,838 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48_false-unreach-call.c [2018-10-24 14:04:44,905 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d11813043/c0d39e5c27f04a0eb2f36cc6ea8a1745/FLAG6a2e2cdcd [2018-10-24 14:04:45,690 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:04:45,692 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label48_false-unreach-call.c [2018-10-24 14:04:45,734 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d11813043/c0d39e5c27f04a0eb2f36cc6ea8a1745/FLAG6a2e2cdcd [2018-10-24 14:04:45,757 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d11813043/c0d39e5c27f04a0eb2f36cc6ea8a1745 [2018-10-24 14:04:45,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:04:45,772 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:04:45,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:04:45,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:04:45,779 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:04:45,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:04:45" (1/1) ... [2018-10-24 14:04:45,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675171b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:45, skipping insertion in model container [2018-10-24 14:04:45,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:04:45" (1/1) ... [2018-10-24 14:04:45,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:04:45,950 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:04:47,256 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:04:47,261 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:04:47,927 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:04:47,964 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:04:47,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47 WrapperNode [2018-10-24 14:04:47,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:04:47,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:04:47,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:04:47,966 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:04:47,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47" (1/1) ... [2018-10-24 14:04:48,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47" (1/1) ... [2018-10-24 14:04:48,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:04:48,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:04:48,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:04:48,725 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:04:48,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47" (1/1) ... [2018-10-24 14:04:48,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47" (1/1) ... [2018-10-24 14:04:48,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47" (1/1) ... [2018-10-24 14:04:48,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47" (1/1) ... [2018-10-24 14:04:48,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47" (1/1) ... [2018-10-24 14:04:48,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47" (1/1) ... [2018-10-24 14:04:49,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47" (1/1) ... [2018-10-24 14:04:49,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:04:49,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:04:49,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:04:49,156 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:04:49,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47" (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 14:04:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:04:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:04:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:04:57,805 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:04:57,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:04:57 BoogieIcfgContainer [2018-10-24 14:04:57,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:04:57,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:04:57,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:04:57,811 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:04:57,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:04:45" (1/3) ... [2018-10-24 14:04:57,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294eb6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:04:57, skipping insertion in model container [2018-10-24 14:04:57,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:47" (2/3) ... [2018-10-24 14:04:57,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294eb6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:04:57, skipping insertion in model container [2018-10-24 14:04:57,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:04:57" (3/3) ... [2018-10-24 14:04:57,815 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label48_false-unreach-call.c [2018-10-24 14:04:57,825 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:04:57,834 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:04:57,849 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:04:57,894 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:04:57,895 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:04:57,895 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:04:57,895 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:04:57,895 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:04:57,895 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:04:57,895 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:04:57,896 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:04:57,896 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:04:57,932 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 14:04:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-24 14:04:57,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:57,940 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:04:57,942 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:57,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:57,949 INFO L82 PathProgramCache]: Analyzing trace with hash -159296518, now seen corresponding path program 1 times [2018-10-24 14:04:57,951 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:57,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:58,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:58,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:58,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:58,299 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:04:58,302 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 14:04:58,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:58,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:04:58,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:04:58,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:04:58,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:58,329 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 14:05:09,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:09,976 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-24 14:05:09,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:05:09,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-10-24 14:05:09,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:10,022 INFO L225 Difference]: With dead ends: 3146 [2018-10-24 14:05:10,023 INFO L226 Difference]: Without dead ends: 2320 [2018-10-24 14:05:10,031 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 14:05:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-24 14:05:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-24 14:05:10,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-24 14:05:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3906 transitions. [2018-10-24 14:05:10,189 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3906 transitions. Word has length 11 [2018-10-24 14:05:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:10,190 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3906 transitions. [2018-10-24 14:05:10,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:05:10,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3906 transitions. [2018-10-24 14:05:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 14:05:10,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:10,194 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:05:10,194 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:10,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:10,195 INFO L82 PathProgramCache]: Analyzing trace with hash 138820631, now seen corresponding path program 1 times [2018-10-24 14:05:10,195 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:10,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:10,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:10,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:10,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:10,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:05:10,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:05:10,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:05:10,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:05:10,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:10,496 INFO L87 Difference]: Start difference. First operand 2320 states and 3906 transitions. Second operand 4 states. [2018-10-24 14:05:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:21,683 INFO L93 Difference]: Finished difference Result 9150 states and 15496 transitions. [2018-10-24 14:05:21,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:05:21,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2018-10-24 14:05:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:21,719 INFO L225 Difference]: With dead ends: 9150 [2018-10-24 14:05:21,719 INFO L226 Difference]: Without dead ends: 6832 [2018-10-24 14:05:21,724 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 14:05:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-24 14:05:21,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-24 14:05:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-24 14:05:21,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 9984 transitions. [2018-10-24 14:05:21,854 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 9984 transitions. Word has length 86 [2018-10-24 14:05:21,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:21,854 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 9984 transitions. [2018-10-24 14:05:21,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:05:21,855 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 9984 transitions. [2018-10-24 14:05:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 14:05:21,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:21,866 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:05:21,866 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:21,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:21,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1232946128, now seen corresponding path program 1 times [2018-10-24 14:05:21,867 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:21,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:21,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:21,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:21,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:22,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:05:22,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:05:22,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:05:22,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:05:22,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:22,099 INFO L87 Difference]: Start difference. First operand 6832 states and 9984 transitions. Second operand 4 states. [2018-10-24 14:05:30,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:30,537 INFO L93 Difference]: Finished difference Result 27215 states and 39824 transitions. [2018-10-24 14:05:30,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:05:30,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2018-10-24 14:05:30,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:30,621 INFO L225 Difference]: With dead ends: 27215 [2018-10-24 14:05:30,621 INFO L226 Difference]: Without dead ends: 20385 [2018-10-24 14:05:30,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:30,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20385 states. [2018-10-24 14:05:30,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20385 to 13600. [2018-10-24 14:05:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13600 states. [2018-10-24 14:05:30,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 17820 transitions. [2018-10-24 14:05:30,908 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 17820 transitions. Word has length 111 [2018-10-24 14:05:30,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:30,909 INFO L481 AbstractCegarLoop]: Abstraction has 13600 states and 17820 transitions. [2018-10-24 14:05:30,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:05:30,909 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 17820 transitions. [2018-10-24 14:05:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-24 14:05:30,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:30,915 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:05:30,915 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:30,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:30,915 INFO L82 PathProgramCache]: Analyzing trace with hash 873723500, now seen corresponding path program 1 times [2018-10-24 14:05:30,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:30,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:30,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:30,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:30,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:31,418 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 14:05:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 83 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:31,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:05:31,575 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 14:05:31,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:31,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:05:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:31,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:05:31,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 14:05:31,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:05:31,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:05:31,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:05:31,886 INFO L87 Difference]: Start difference. First operand 13600 states and 17820 transitions. Second operand 7 states. [2018-10-24 14:05:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:55,087 INFO L93 Difference]: Finished difference Result 58064 states and 73551 transitions. [2018-10-24 14:05:55,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:05:55,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2018-10-24 14:05:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:55,163 INFO L225 Difference]: With dead ends: 58064 [2018-10-24 14:05:55,163 INFO L226 Difference]: Without dead ends: 42207 [2018-10-24 14:05:55,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:05:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42207 states. [2018-10-24 14:05:55,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42207 to 27887. [2018-10-24 14:05:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27887 states. [2018-10-24 14:05:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27887 states to 27887 states and 33240 transitions. [2018-10-24 14:05:55,695 INFO L78 Accepts]: Start accepts. Automaton has 27887 states and 33240 transitions. Word has length 160 [2018-10-24 14:05:55,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:55,695 INFO L481 AbstractCegarLoop]: Abstraction has 27887 states and 33240 transitions. [2018-10-24 14:05:55,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:05:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 27887 states and 33240 transitions. [2018-10-24 14:05:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-24 14:05:55,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:55,702 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:55,702 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:55,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:55,703 INFO L82 PathProgramCache]: Analyzing trace with hash 210682417, now seen corresponding path program 1 times [2018-10-24 14:05:55,703 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:55,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:55,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:55,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:55,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 14:05:56,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:05:56,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:05:56,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:05:56,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:05:56,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:56,055 INFO L87 Difference]: Start difference. First operand 27887 states and 33240 transitions. Second operand 4 states. [2018-10-24 14:06:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:05,928 INFO L93 Difference]: Finished difference Result 62540 states and 74505 transitions. [2018-10-24 14:06:05,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:06:05,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2018-10-24 14:06:05,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:05,989 INFO L225 Difference]: With dead ends: 62540 [2018-10-24 14:06:05,989 INFO L226 Difference]: Without dead ends: 33139 [2018-10-24 14:06:06,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:06:06,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33139 states. [2018-10-24 14:06:06,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33139 to 32387. [2018-10-24 14:06:06,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32387 states. [2018-10-24 14:06:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32387 states to 32387 states and 36230 transitions. [2018-10-24 14:06:06,365 INFO L78 Accepts]: Start accepts. Automaton has 32387 states and 36230 transitions. Word has length 226 [2018-10-24 14:06:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:06,366 INFO L481 AbstractCegarLoop]: Abstraction has 32387 states and 36230 transitions. [2018-10-24 14:06:06,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:06:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 32387 states and 36230 transitions. [2018-10-24 14:06:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-24 14:06:06,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:06,373 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 14:06:06,374 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:06,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:06,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1535610863, now seen corresponding path program 1 times [2018-10-24 14:06:06,374 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:06,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:06,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:06,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:06,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:06,742 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 14:06:07,164 WARN L179 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2018-10-24 14:06:07,286 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2018-10-24 14:06:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 14:06:07,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:07,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:06:07,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:06:07,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:06:07,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:06:07,446 INFO L87 Difference]: Start difference. First operand 32387 states and 36230 transitions. Second operand 6 states. [2018-10-24 14:06:18,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:18,686 INFO L93 Difference]: Finished difference Result 78310 states and 87782 transitions. [2018-10-24 14:06:18,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:06:18,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2018-10-24 14:06:18,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:18,774 INFO L225 Difference]: With dead ends: 78310 [2018-10-24 14:06:18,774 INFO L226 Difference]: Without dead ends: 45925 [2018-10-24 14:06:18,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:06:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45925 states. [2018-10-24 14:06:19,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45925 to 45171. [2018-10-24 14:06:19,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45171 states. [2018-10-24 14:06:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45171 states to 45171 states and 49820 transitions. [2018-10-24 14:06:19,221 INFO L78 Accepts]: Start accepts. Automaton has 45171 states and 49820 transitions. Word has length 295 [2018-10-24 14:06:19,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:19,221 INFO L481 AbstractCegarLoop]: Abstraction has 45171 states and 49820 transitions. [2018-10-24 14:06:19,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:06:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand 45171 states and 49820 transitions. [2018-10-24 14:06:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-24 14:06:19,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:19,232 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 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] [2018-10-24 14:06:19,232 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:19,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:19,233 INFO L82 PathProgramCache]: Analyzing trace with hash -356496373, now seen corresponding path program 1 times [2018-10-24 14:06:19,233 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:19,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:19,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:19,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:19,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 14:06:19,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:19,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:06:19,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:06:19,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:06:19,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:06:19,672 INFO L87 Difference]: Start difference. First operand 45171 states and 49820 transitions. Second operand 4 states. [2018-10-24 14:06:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:28,279 INFO L93 Difference]: Finished difference Result 156516 states and 173330 transitions. [2018-10-24 14:06:28,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:06:28,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 378 [2018-10-24 14:06:28,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:28,411 INFO L225 Difference]: With dead ends: 156516 [2018-10-24 14:06:28,411 INFO L226 Difference]: Without dead ends: 112099 [2018-10-24 14:06:28,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 14:06:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112099 states. [2018-10-24 14:06:29,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112099 to 106083. [2018-10-24 14:06:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106083 states. [2018-10-24 14:06:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106083 states to 106083 states and 116279 transitions. [2018-10-24 14:06:29,334 INFO L78 Accepts]: Start accepts. Automaton has 106083 states and 116279 transitions. Word has length 378 [2018-10-24 14:06:29,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:29,334 INFO L481 AbstractCegarLoop]: Abstraction has 106083 states and 116279 transitions. [2018-10-24 14:06:29,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:06:29,335 INFO L276 IsEmpty]: Start isEmpty. Operand 106083 states and 116279 transitions. [2018-10-24 14:06:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-24 14:06:29,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:29,348 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 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] [2018-10-24 14:06:29,349 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:29,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:29,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1212554303, now seen corresponding path program 1 times [2018-10-24 14:06:29,349 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:29,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:29,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:29,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:29,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-24 14:06:29,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:29,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:06:29,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:06:29,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:06:29,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:06:29,671 INFO L87 Difference]: Start difference. First operand 106083 states and 116279 transitions. Second operand 3 states. [2018-10-24 14:06:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:37,789 INFO L93 Difference]: Finished difference Result 212164 states and 232556 transitions. [2018-10-24 14:06:37,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:06:37,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 382 [2018-10-24 14:06:37,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:37,924 INFO L225 Difference]: With dead ends: 212164 [2018-10-24 14:06:37,925 INFO L226 Difference]: Without dead ends: 106083 [2018-10-24 14:06:37,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 14:06:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106083 states. [2018-10-24 14:06:38,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106083 to 103827. [2018-10-24 14:06:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103827 states. [2018-10-24 14:06:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103827 states to 103827 states and 110532 transitions. [2018-10-24 14:06:38,755 INFO L78 Accepts]: Start accepts. Automaton has 103827 states and 110532 transitions. Word has length 382 [2018-10-24 14:06:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:38,755 INFO L481 AbstractCegarLoop]: Abstraction has 103827 states and 110532 transitions. [2018-10-24 14:06:38,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:06:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 103827 states and 110532 transitions. [2018-10-24 14:06:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-24 14:06:38,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:38,764 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:38,764 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:38,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:38,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1192995185, now seen corresponding path program 1 times [2018-10-24 14:06:38,765 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:38,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:38,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:38,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:38,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 311 proven. 69 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 14:06:39,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:06:39,250 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 14:06:39,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:39,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:06:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 311 proven. 69 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 14:06:39,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:06:39,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-24 14:06:39,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:06:39,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:06:39,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:06:39,697 INFO L87 Difference]: Start difference. First operand 103827 states and 110532 transitions. Second operand 6 states. [2018-10-24 14:06:55,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:55,610 INFO L93 Difference]: Finished difference Result 225702 states and 240713 transitions. [2018-10-24 14:06:55,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:06:55,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 414 [2018-10-24 14:06:55,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:55,766 INFO L225 Difference]: With dead ends: 225702 [2018-10-24 14:06:55,766 INFO L226 Difference]: Without dead ends: 121877 [2018-10-24 14:06:55,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 413 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:06:55,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121877 states. [2018-10-24 14:06:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121877 to 120373. [2018-10-24 14:06:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120373 states. [2018-10-24 14:06:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120373 states to 120373 states and 126921 transitions. [2018-10-24 14:06:57,568 INFO L78 Accepts]: Start accepts. Automaton has 120373 states and 126921 transitions. Word has length 414 [2018-10-24 14:06:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:57,569 INFO L481 AbstractCegarLoop]: Abstraction has 120373 states and 126921 transitions. [2018-10-24 14:06:57,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:06:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand 120373 states and 126921 transitions. [2018-10-24 14:06:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-10-24 14:06:57,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:57,577 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:06:57,577 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:57,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:57,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1627232402, now seen corresponding path program 1 times [2018-10-24 14:06:57,578 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:57,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:57,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:57,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:57,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-24 14:06:57,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:57,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:06:57,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:06:57,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:06:57,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:06:57,957 INFO L87 Difference]: Start difference. First operand 120373 states and 126921 transitions. Second operand 4 states. [2018-10-24 14:07:05,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:05,881 INFO L93 Difference]: Finished difference Result 244504 states and 257638 transitions. [2018-10-24 14:07:05,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:07:05,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 448 [2018-10-24 14:07:05,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:06,017 INFO L225 Difference]: With dead ends: 244504 [2018-10-24 14:07:06,018 INFO L226 Difference]: Without dead ends: 124133 [2018-10-24 14:07:06,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:07:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124133 states. [2018-10-24 14:07:07,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124133 to 121125. [2018-10-24 14:07:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121125 states. [2018-10-24 14:07:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121125 states to 121125 states and 127259 transitions. [2018-10-24 14:07:08,105 INFO L78 Accepts]: Start accepts. Automaton has 121125 states and 127259 transitions. Word has length 448 [2018-10-24 14:07:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:08,106 INFO L481 AbstractCegarLoop]: Abstraction has 121125 states and 127259 transitions. [2018-10-24 14:07:08,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:07:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 121125 states and 127259 transitions. [2018-10-24 14:07:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-10-24 14:07:08,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:08,117 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:07:08,117 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:08,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:08,118 INFO L82 PathProgramCache]: Analyzing trace with hash 734228447, now seen corresponding path program 1 times [2018-10-24 14:07:08,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:08,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:08,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:08,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:08,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-10-24 14:07:08,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:08,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:07:08,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:07:08,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:07:08,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:07:08,441 INFO L87 Difference]: Start difference. First operand 121125 states and 127259 transitions. Second operand 3 states. [2018-10-24 14:07:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:13,811 INFO L93 Difference]: Finished difference Result 255784 states and 269423 transitions. [2018-10-24 14:07:13,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:07:13,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 459 [2018-10-24 14:07:13,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:13,957 INFO L225 Difference]: With dead ends: 255784 [2018-10-24 14:07:13,958 INFO L226 Difference]: Without dead ends: 134661 [2018-10-24 14:07:14,026 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 14:07:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134661 states. [2018-10-24 14:07:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134661 to 133157. [2018-10-24 14:07:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133157 states. [2018-10-24 14:07:16,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133157 states to 133157 states and 140174 transitions. [2018-10-24 14:07:16,350 INFO L78 Accepts]: Start accepts. Automaton has 133157 states and 140174 transitions. Word has length 459 [2018-10-24 14:07:16,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:16,351 INFO L481 AbstractCegarLoop]: Abstraction has 133157 states and 140174 transitions. [2018-10-24 14:07:16,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:07:16,351 INFO L276 IsEmpty]: Start isEmpty. Operand 133157 states and 140174 transitions. [2018-10-24 14:07:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-24 14:07:16,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:16,360 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 14:07:16,360 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:16,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1784193791, now seen corresponding path program 1 times [2018-10-24 14:07:16,360 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:16,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:16,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:16,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:16,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-24 14:07:16,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:16,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:07:16,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:07:16,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:07:16,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:16,769 INFO L87 Difference]: Start difference. First operand 133157 states and 140174 transitions. Second operand 4 states. [2018-10-24 14:07:24,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:24,629 INFO L93 Difference]: Finished difference Result 264808 states and 278793 transitions. [2018-10-24 14:07:24,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:07:24,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 467 [2018-10-24 14:07:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:24,766 INFO L225 Difference]: With dead ends: 264808 [2018-10-24 14:07:24,767 INFO L226 Difference]: Without dead ends: 125625 [2018-10-24 14:07:24,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:24,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125625 states. [2018-10-24 14:07:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125625 to 124873. [2018-10-24 14:07:25,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124873 states. [2018-10-24 14:07:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124873 states to 124873 states and 129390 transitions. [2018-10-24 14:07:25,947 INFO L78 Accepts]: Start accepts. Automaton has 124873 states and 129390 transitions. Word has length 467 [2018-10-24 14:07:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:25,948 INFO L481 AbstractCegarLoop]: Abstraction has 124873 states and 129390 transitions. [2018-10-24 14:07:25,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:07:25,948 INFO L276 IsEmpty]: Start isEmpty. Operand 124873 states and 129390 transitions. [2018-10-24 14:07:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-10-24 14:07:25,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:25,961 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:25,961 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:25,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:25,962 INFO L82 PathProgramCache]: Analyzing trace with hash -2037490819, now seen corresponding path program 1 times [2018-10-24 14:07:25,962 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:25,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:25,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:25,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:25,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 537 proven. 86 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-10-24 14:07:28,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:07:28,093 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 14:07:28,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:28,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:07:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 537 proven. 86 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-10-24 14:07:30,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:07:30,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-24 14:07:30,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:07:30,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:07:30,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:07:30,178 INFO L87 Difference]: Start difference. First operand 124873 states and 129390 transitions. Second operand 7 states. [2018-10-24 14:07:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:51,453 INFO L93 Difference]: Finished difference Result 349788 states and 362007 transitions. [2018-10-24 14:07:51,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:07:51,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 524 [2018-10-24 14:07:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:51,694 INFO L225 Difference]: With dead ends: 349788 [2018-10-24 14:07:51,694 INFO L226 Difference]: Without dead ends: 225669 [2018-10-24 14:07:51,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 522 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:07:51,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225669 states. [2018-10-24 14:07:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225669 to 179775. [2018-10-24 14:07:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179775 states. [2018-10-24 14:07:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179775 states to 179775 states and 185155 transitions. [2018-10-24 14:07:57,778 INFO L78 Accepts]: Start accepts. Automaton has 179775 states and 185155 transitions. Word has length 524 [2018-10-24 14:07:57,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:57,779 INFO L481 AbstractCegarLoop]: Abstraction has 179775 states and 185155 transitions. [2018-10-24 14:07:57,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:07:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 179775 states and 185155 transitions. [2018-10-24 14:07:57,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2018-10-24 14:07:57,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:57,792 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:07:57,792 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:57,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:57,792 INFO L82 PathProgramCache]: Analyzing trace with hash -767249028, now seen corresponding path program 1 times [2018-10-24 14:07:57,793 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:57,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:57,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:57,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:57,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-24 14:07:58,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:58,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:07:58,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:07:58,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:07:58,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:58,798 INFO L87 Difference]: Start difference. First operand 179775 states and 185155 transitions. Second operand 4 states. [2018-10-24 14:08:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:08,251 INFO L93 Difference]: Finished difference Result 371580 states and 382994 transitions. [2018-10-24 14:08:08,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:08:08,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 545 [2018-10-24 14:08:08,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:08,468 INFO L225 Difference]: With dead ends: 371580 [2018-10-24 14:08:08,469 INFO L226 Difference]: Without dead ends: 193311 [2018-10-24 14:08:08,548 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 14:08:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193311 states. [2018-10-24 14:08:10,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193311 to 191055. [2018-10-24 14:08:10,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191055 states. [2018-10-24 14:08:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191055 states to 191055 states and 196212 transitions. [2018-10-24 14:08:10,790 INFO L78 Accepts]: Start accepts. Automaton has 191055 states and 196212 transitions. Word has length 545 [2018-10-24 14:08:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:10,791 INFO L481 AbstractCegarLoop]: Abstraction has 191055 states and 196212 transitions. [2018-10-24 14:08:10,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:08:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 191055 states and 196212 transitions. [2018-10-24 14:08:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2018-10-24 14:08:10,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:10,807 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 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] [2018-10-24 14:08:10,807 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:10,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:10,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1339496796, now seen corresponding path program 1 times [2018-10-24 14:08:10,807 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:10,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:10,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:10,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:10,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:11,437 WARN L179 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:08:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 621 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2018-10-24 14:08:12,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:12,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:08:12,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:08:12,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:08:12,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:08:12,244 INFO L87 Difference]: Start difference. First operand 191055 states and 196212 transitions. Second operand 4 states. [2018-10-24 14:08:18,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:18,631 INFO L93 Difference]: Finished difference Result 385868 states and 396252 transitions. [2018-10-24 14:08:18,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:08:18,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 613 [2018-10-24 14:08:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:18,846 INFO L225 Difference]: With dead ends: 385868 [2018-10-24 14:08:18,846 INFO L226 Difference]: Without dead ends: 194813 [2018-10-24 14:08:18,914 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 14:08:19,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194813 states. [2018-10-24 14:08:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194813 to 188797. [2018-10-24 14:08:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188797 states. [2018-10-24 14:08:21,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188797 states to 188797 states and 193523 transitions. [2018-10-24 14:08:21,091 INFO L78 Accepts]: Start accepts. Automaton has 188797 states and 193523 transitions. Word has length 613 [2018-10-24 14:08:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:21,092 INFO L481 AbstractCegarLoop]: Abstraction has 188797 states and 193523 transitions. [2018-10-24 14:08:21,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:08:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand 188797 states and 193523 transitions. [2018-10-24 14:08:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2018-10-24 14:08:21,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:21,105 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:21,105 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:21,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:21,106 INFO L82 PathProgramCache]: Analyzing trace with hash 335490844, now seen corresponding path program 1 times [2018-10-24 14:08:21,106 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:21,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:21,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:21,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:21,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:21,863 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-24 14:08:22,293 WARN L179 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-24 14:08:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 388 proven. 144 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 14:08:23,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:08:23,490 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 14:08:23,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:23,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:08:24,305 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-10-24 14:08:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 477 proven. 55 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 14:08:25,457 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:08:25,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-24 14:08:25,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 14:08:25,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 14:08:25,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:08:25,460 INFO L87 Difference]: Start difference. First operand 188797 states and 193523 transitions. Second operand 10 states. Received shutdown request... [2018-10-24 14:08:30,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:08:30,647 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:08:30,652 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:08:30,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:08:30 BoogieIcfgContainer [2018-10-24 14:08:30,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:08:30,653 INFO L168 Benchmark]: Toolchain (without parser) took 224882.48 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -664.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 14:08:30,654 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:08:30,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2191.92 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:30,655 INFO L168 Benchmark]: Boogie Procedure Inliner took 758.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 811.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -999.3 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:30,656 INFO L168 Benchmark]: Boogie Preprocessor took 430.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:30,657 INFO L168 Benchmark]: RCFGBuilder took 8651.19 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 231.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -202.3 MB). Peak memory consumption was 662.9 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:30,658 INFO L168 Benchmark]: TraceAbstraction took 212845.06 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 298.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 14:08:30,664 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2191.92 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 758.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 811.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -999.3 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 430.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8651.19 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 231.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -202.3 MB). Peak memory consumption was 662.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212845.06 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 298.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 42). Cancelled while BasicCegarLoop was constructing difference of abstraction (188797states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (7048 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 212.7s OverallTime, 16 OverallIterations, 6 TraceHistogramMax, 174.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10141 SDtfs, 37733 SDslu, 1500 SDs, 0 SdLazy, 84113 SolverSat, 15449 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 139.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1833 GetRequests, 1767 SyntacticMatches, 13 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191055occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 21.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 91817 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 7525 NumberOfCodeBlocks, 7525 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 7505 ConstructedInterpolants, 87 QuantifiedInterpolants, 14537684 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2315 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 20 InterpolantComputations, 13 PerfectInterpolantSequences, 8141/8655 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown