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_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:10:19,764 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:10:19,766 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:10:19,779 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:10:19,780 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:10:19,781 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:10:19,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:10:19,787 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:10:19,789 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:10:19,790 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:10:19,791 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:10:19,792 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:10:19,793 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:10:19,794 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:10:19,795 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:10:19,796 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:10:19,797 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:10:19,798 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:10:19,800 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:10:19,802 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:10:19,803 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:10:19,804 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:10:19,807 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:10:19,807 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:10:19,807 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:10:19,809 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:10:19,810 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:10:19,811 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:10:19,812 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:10:19,813 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:10:19,814 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:10:19,815 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:10:19,815 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:10:19,819 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:10:19,820 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:10:19,822 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:10:19,822 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:10:19,838 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:10:19,838 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:10:19,839 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:10:19,839 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:10:19,840 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:10:19,840 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:10:19,840 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:10:19,840 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:10:19,840 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:10:19,841 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:10:19,841 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:10:19,841 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:10:19,841 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:10:19,841 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:10:19,841 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:10:19,842 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:10:19,842 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:10:19,842 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:10:19,842 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:10:19,842 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:10:19,843 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:10:19,843 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:10:19,843 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:10:19,843 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:10:19,843 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:10:19,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:10:19,844 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:10:19,844 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:10:19,892 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:10:19,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:10:19,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:10:19,917 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:10:19,918 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:10:19,919 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11_true-unreach-call.c [2018-10-24 16:10:19,978 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/98b0a5854/4209c135d7dd4abf812d0943518869af/FLAG8f86c790b [2018-10-24 16:10:20,740 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:10:20,741 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label11_true-unreach-call.c [2018-10-24 16:10:20,772 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/98b0a5854/4209c135d7dd4abf812d0943518869af/FLAG8f86c790b [2018-10-24 16:10:20,792 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/98b0a5854/4209c135d7dd4abf812d0943518869af [2018-10-24 16:10:20,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:10:20,806 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:10:20,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:10:20,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:10:20,815 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:10:20,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:10:20" (1/1) ... [2018-10-24 16:10:20,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:20, skipping insertion in model container [2018-10-24 16:10:20,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:10:20" (1/1) ... [2018-10-24 16:10:20,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:10:20,993 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:10:22,251 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:10:22,256 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:10:22,958 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:10:22,991 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:10:22,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22 WrapperNode [2018-10-24 16:10:22,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:10:22,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:10:22,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:10:22,994 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:10:23,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22" (1/1) ... [2018-10-24 16:10:23,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22" (1/1) ... [2018-10-24 16:10:23,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:10:23,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:10:23,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:10:23,610 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:10:23,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22" (1/1) ... [2018-10-24 16:10:23,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22" (1/1) ... [2018-10-24 16:10:23,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22" (1/1) ... [2018-10-24 16:10:23,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22" (1/1) ... [2018-10-24 16:10:23,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22" (1/1) ... [2018-10-24 16:10:23,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22" (1/1) ... [2018-10-24 16:10:23,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22" (1/1) ... [2018-10-24 16:10:23,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:10:23,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:10:23,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:10:23,938 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:10:23,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:10:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:10:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:10:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:10:33,010 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:10:33,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:10:33 BoogieIcfgContainer [2018-10-24 16:10:33,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:10:33,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:10:33,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:10:33,016 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:10:33,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:10:20" (1/3) ... [2018-10-24 16:10:33,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1b6e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:10:33, skipping insertion in model container [2018-10-24 16:10:33,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:22" (2/3) ... [2018-10-24 16:10:33,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1b6e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:10:33, skipping insertion in model container [2018-10-24 16:10:33,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:10:33" (3/3) ... [2018-10-24 16:10:33,020 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label11_true-unreach-call.c [2018-10-24 16:10:33,030 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:10:33,040 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:10:33,058 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:10:33,109 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:10:33,110 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:10:33,110 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:10:33,110 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:10:33,110 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:10:33,110 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:10:33,111 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:10:33,111 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:10:33,111 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:10:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 16:10:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-24 16:10:33,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:33,165 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:10:33,169 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:33,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:33,176 INFO L82 PathProgramCache]: Analyzing trace with hash 935177138, now seen corresponding path program 1 times [2018-10-24 16:10:33,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:33,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:33,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:33,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:33,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:33,665 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 16:10:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:10:33,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:10:33,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:10:33,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:10:33,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:10:33,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:10:33,704 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 16:10:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:10:48,832 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-24 16:10:48,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:10:48,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-10-24 16:10:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:10:48,875 INFO L225 Difference]: With dead ends: 3146 [2018-10-24 16:10:48,875 INFO L226 Difference]: Without dead ends: 2320 [2018-10-24 16:10:48,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:10:48,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-24 16:10:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-24 16:10:49,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-24 16:10:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4222 transitions. [2018-10-24 16:10:49,040 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4222 transitions. Word has length 40 [2018-10-24 16:10:49,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:10:49,040 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4222 transitions. [2018-10-24 16:10:49,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:10:49,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4222 transitions. [2018-10-24 16:10:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 16:10:49,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:49,049 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:10:49,050 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:49,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:49,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2139677904, now seen corresponding path program 1 times [2018-10-24 16:10:49,050 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:49,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:49,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:49,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:49,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:49,880 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-24 16:10:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:10:50,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:10:50,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 16:10:50,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:10:50,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:10:50,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:10:50,104 INFO L87 Difference]: Start difference. First operand 2320 states and 4222 transitions. Second operand 7 states. [2018-10-24 16:11:13,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:13,635 INFO L93 Difference]: Finished difference Result 9904 states and 17611 transitions. [2018-10-24 16:11:13,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:11:13,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2018-10-24 16:11:13,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:13,680 INFO L225 Difference]: With dead ends: 9904 [2018-10-24 16:11:13,680 INFO L226 Difference]: Without dead ends: 7586 [2018-10-24 16:11:13,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:11:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2018-10-24 16:11:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 6080. [2018-10-24 16:11:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6080 states. [2018-10-24 16:11:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 9384 transitions. [2018-10-24 16:11:13,814 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 9384 transitions. Word has length 106 [2018-10-24 16:11:13,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:13,814 INFO L481 AbstractCegarLoop]: Abstraction has 6080 states and 9384 transitions. [2018-10-24 16:11:13,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:11:13,815 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 9384 transitions. [2018-10-24 16:11:13,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-24 16:11:13,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:13,827 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:11:13,828 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:13,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:13,832 INFO L82 PathProgramCache]: Analyzing trace with hash 851260383, now seen corresponding path program 1 times [2018-10-24 16:11:13,832 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:13,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:13,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:13,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:13,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:14,329 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 16:11:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 138 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-24 16:11:14,444 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:11:14,444 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:11:14,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:14,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:11:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:11:14,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:11:14,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:11:14,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:11:14,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:11:14,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:11:14,663 INFO L87 Difference]: Start difference. First operand 6080 states and 9384 transitions. Second operand 7 states. [2018-10-24 16:11:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:36,996 INFO L93 Difference]: Finished difference Result 35504 states and 56959 transitions. [2018-10-24 16:11:36,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:11:36,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2018-10-24 16:11:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:37,094 INFO L225 Difference]: With dead ends: 35504 [2018-10-24 16:11:37,095 INFO L226 Difference]: Without dead ends: 27167 [2018-10-24 16:11:37,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 204 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:11:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27167 states. [2018-10-24 16:11:37,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27167 to 15103. [2018-10-24 16:11:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15103 states. [2018-10-24 16:11:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15103 states to 15103 states and 19695 transitions. [2018-10-24 16:11:37,463 INFO L78 Accepts]: Start accepts. Automaton has 15103 states and 19695 transitions. Word has length 203 [2018-10-24 16:11:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:37,463 INFO L481 AbstractCegarLoop]: Abstraction has 15103 states and 19695 transitions. [2018-10-24 16:11:37,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:11:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 15103 states and 19695 transitions. [2018-10-24 16:11:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-24 16:11:37,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:37,470 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:11:37,471 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:37,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:37,471 INFO L82 PathProgramCache]: Analyzing trace with hash -267881794, now seen corresponding path program 1 times [2018-10-24 16:11:37,471 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:37,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:37,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:37,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:37,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:38,022 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 75 proven. 69 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-10-24 16:11:38,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:11:38,022 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:11:38,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:38,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:11:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-10-24 16:11:38,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:11:38,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 16:11:38,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:11:38,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:11:38,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:11:38,318 INFO L87 Difference]: Start difference. First operand 15103 states and 19695 transitions. Second operand 5 states. [2018-10-24 16:11:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:54,952 INFO L93 Difference]: Finished difference Result 70060 states and 95121 transitions. [2018-10-24 16:11:54,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:11:54,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2018-10-24 16:11:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:55,048 INFO L225 Difference]: With dead ends: 70060 [2018-10-24 16:11:55,049 INFO L226 Difference]: Without dead ends: 54959 [2018-10-24 16:11:55,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 306 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:11:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54959 states. [2018-10-24 16:11:55,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54959 to 54959. [2018-10-24 16:11:55,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54959 states. [2018-10-24 16:11:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54959 states to 54959 states and 66914 transitions. [2018-10-24 16:11:55,865 INFO L78 Accepts]: Start accepts. Automaton has 54959 states and 66914 transitions. Word has length 305 [2018-10-24 16:11:55,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:55,866 INFO L481 AbstractCegarLoop]: Abstraction has 54959 states and 66914 transitions. [2018-10-24 16:11:55,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:11:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 54959 states and 66914 transitions. [2018-10-24 16:11:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-10-24 16:11:55,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:55,882 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:11:55,882 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:55,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:55,883 INFO L82 PathProgramCache]: Analyzing trace with hash -809625770, now seen corresponding path program 1 times [2018-10-24 16:11:55,883 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:55,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:55,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:55,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:55,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 16:11:56,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:56,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:11:56,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:11:56,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:11:56,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:11:56,371 INFO L87 Difference]: Start difference. First operand 54959 states and 66914 transitions. Second operand 3 states. [2018-10-24 16:12:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:04,496 INFO L93 Difference]: Finished difference Result 139244 states and 170444 transitions. [2018-10-24 16:12:04,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:12:04,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 423 [2018-10-24 16:12:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:04,716 INFO L225 Difference]: With dead ends: 139244 [2018-10-24 16:12:04,716 INFO L226 Difference]: Without dead ends: 84287 [2018-10-24 16:12:04,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:12:04,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84287 states. [2018-10-24 16:12:06,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84287 to 84287. [2018-10-24 16:12:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84287 states. [2018-10-24 16:12:06,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84287 states to 84287 states and 101065 transitions. [2018-10-24 16:12:06,403 INFO L78 Accepts]: Start accepts. Automaton has 84287 states and 101065 transitions. Word has length 423 [2018-10-24 16:12:06,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:06,404 INFO L481 AbstractCegarLoop]: Abstraction has 84287 states and 101065 transitions. [2018-10-24 16:12:06,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:12:06,404 INFO L276 IsEmpty]: Start isEmpty. Operand 84287 states and 101065 transitions. [2018-10-24 16:12:06,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2018-10-24 16:12:06,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:06,445 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:06,445 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:06,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:06,446 INFO L82 PathProgramCache]: Analyzing trace with hash 96344836, now seen corresponding path program 1 times [2018-10-24 16:12:06,446 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:06,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:06,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:06,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:06,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-10-24 16:12:06,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:06,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:12:06,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:12:06,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:12:06,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:06,949 INFO L87 Difference]: Start difference. First operand 84287 states and 101065 transitions. Second operand 4 states. [2018-10-24 16:12:15,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:15,411 INFO L93 Difference]: Finished difference Result 205420 states and 246636 transitions. [2018-10-24 16:12:15,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:15,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 545 [2018-10-24 16:12:15,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:15,548 INFO L225 Difference]: With dead ends: 205420 [2018-10-24 16:12:15,549 INFO L226 Difference]: Without dead ends: 121135 [2018-10-24 16:12:15,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:15,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121135 states. [2018-10-24 16:12:16,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121135 to 119631. [2018-10-24 16:12:16,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119631 states. [2018-10-24 16:12:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119631 states to 119631 states and 136980 transitions. [2018-10-24 16:12:16,711 INFO L78 Accepts]: Start accepts. Automaton has 119631 states and 136980 transitions. Word has length 545 [2018-10-24 16:12:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:16,712 INFO L481 AbstractCegarLoop]: Abstraction has 119631 states and 136980 transitions. [2018-10-24 16:12:16,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:12:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 119631 states and 136980 transitions. [2018-10-24 16:12:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2018-10-24 16:12:16,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:16,783 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:16,783 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:16,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:16,784 INFO L82 PathProgramCache]: Analyzing trace with hash 990518049, now seen corresponding path program 1 times [2018-10-24 16:12:16,784 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:16,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:16,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:16,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:16,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 739 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-10-24 16:12:17,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:17,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:12:17,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:12:17,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:12:17,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:17,328 INFO L87 Difference]: Start difference. First operand 119631 states and 136980 transitions. Second operand 4 states. [2018-10-24 16:12:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:26,109 INFO L93 Difference]: Finished difference Result 277612 states and 316285 transitions. [2018-10-24 16:12:26,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:26,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 599 [2018-10-24 16:12:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:26,288 INFO L225 Difference]: With dead ends: 277612 [2018-10-24 16:12:26,289 INFO L226 Difference]: Without dead ends: 155725 [2018-10-24 16:12:26,354 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 16:12:26,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155725 states. [2018-10-24 16:12:27,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155725 to 154221. [2018-10-24 16:12:27,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154221 states. [2018-10-24 16:12:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154221 states to 154221 states and 168939 transitions. [2018-10-24 16:12:27,642 INFO L78 Accepts]: Start accepts. Automaton has 154221 states and 168939 transitions. Word has length 599 [2018-10-24 16:12:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:27,642 INFO L481 AbstractCegarLoop]: Abstraction has 154221 states and 168939 transitions. [2018-10-24 16:12:27,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:12:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 154221 states and 168939 transitions. [2018-10-24 16:12:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2018-10-24 16:12:27,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:27,722 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:27,722 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:27,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1575344598, now seen corresponding path program 1 times [2018-10-24 16:12:27,723 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:27,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:27,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:27,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:27,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 900 proven. 5 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-10-24 16:12:29,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:12:29,784 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:12:29,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:29,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:12:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 900 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-24 16:12:30,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:12:30,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:12:30,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:12:30,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:12:30,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:12:30,244 INFO L87 Difference]: Start difference. First operand 154221 states and 168939 transitions. Second operand 5 states. [2018-10-24 16:12:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:41,252 INFO L93 Difference]: Finished difference Result 309192 states and 338653 transitions. [2018-10-24 16:12:41,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:41,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 655 [2018-10-24 16:12:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:41,436 INFO L225 Difference]: With dead ends: 309192 [2018-10-24 16:12:41,437 INFO L226 Difference]: Without dead ends: 155725 [2018-10-24 16:12:41,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 655 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:12:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155725 states. [2018-10-24 16:12:42,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155725 to 154221. [2018-10-24 16:12:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154221 states. [2018-10-24 16:12:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154221 states to 154221 states and 166585 transitions. [2018-10-24 16:12:42,880 INFO L78 Accepts]: Start accepts. Automaton has 154221 states and 166585 transitions. Word has length 655 [2018-10-24 16:12:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:42,881 INFO L481 AbstractCegarLoop]: Abstraction has 154221 states and 166585 transitions. [2018-10-24 16:12:42,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:12:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 154221 states and 166585 transitions. [2018-10-24 16:12:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-10-24 16:12:42,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:42,912 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:42,912 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:42,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:42,913 INFO L82 PathProgramCache]: Analyzing trace with hash 506792956, now seen corresponding path program 1 times [2018-10-24 16:12:42,913 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:42,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:42,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:42,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:42,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:43,487 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:12:44,011 WARN L179 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2018-10-24 16:12:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1189 backedges. 317 proven. 790 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-24 16:12:45,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:12:45,393 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:12:45,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:45,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:12:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1189 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2018-10-24 16:12:46,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:12:46,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-24 16:12:46,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:12:46,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:12:46,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:12:46,069 INFO L87 Difference]: Start difference. First operand 154221 states and 166585 transitions. Second operand 9 states. [2018-10-24 16:13:11,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:11,690 INFO L93 Difference]: Finished difference Result 393474 states and 422839 transitions. [2018-10-24 16:13:11,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 16:13:11,690 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 656 [2018-10-24 16:13:11,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:11,939 INFO L225 Difference]: With dead ends: 393474 [2018-10-24 16:13:11,940 INFO L226 Difference]: Without dead ends: 198580 [2018-10-24 16:13:12,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 664 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-10-24 16:13:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198580 states. [2018-10-24 16:13:14,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198580 to 126363. [2018-10-24 16:13:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126363 states. [2018-10-24 16:13:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126363 states to 126363 states and 132326 transitions. [2018-10-24 16:13:14,308 INFO L78 Accepts]: Start accepts. Automaton has 126363 states and 132326 transitions. Word has length 656 [2018-10-24 16:13:14,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:14,309 INFO L481 AbstractCegarLoop]: Abstraction has 126363 states and 132326 transitions. [2018-10-24 16:13:14,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:13:14,309 INFO L276 IsEmpty]: Start isEmpty. Operand 126363 states and 132326 transitions. [2018-10-24 16:13:14,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2018-10-24 16:13:14,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:14,339 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2018-10-24 16:13:14,340 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:14,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:14,340 INFO L82 PathProgramCache]: Analyzing trace with hash 594386486, now seen corresponding path program 1 times [2018-10-24 16:13:14,340 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:14,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:14,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:14,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:14,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2018-10-24 16:13:14,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:14,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:13:14,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:13:14,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:13:14,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:13:14,922 INFO L87 Difference]: Start difference. First operand 126363 states and 132326 transitions. Second operand 3 states. [2018-10-24 16:13:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:19,524 INFO L93 Difference]: Finished difference Result 251972 states and 263893 transitions. [2018-10-24 16:13:19,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:13:19,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 685 [2018-10-24 16:13:19,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:19,655 INFO L225 Difference]: With dead ends: 251972 [2018-10-24 16:13:19,655 INFO L226 Difference]: Without dead ends: 126363 [2018-10-24 16:13:19,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:13:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126363 states. [2018-10-24 16:13:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126363 to 126363. [2018-10-24 16:13:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126363 states. [2018-10-24 16:13:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126363 states to 126363 states and 132213 transitions. [2018-10-24 16:13:20,808 INFO L78 Accepts]: Start accepts. Automaton has 126363 states and 132213 transitions. Word has length 685 [2018-10-24 16:13:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:20,809 INFO L481 AbstractCegarLoop]: Abstraction has 126363 states and 132213 transitions. [2018-10-24 16:13:20,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:13:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 126363 states and 132213 transitions. [2018-10-24 16:13:20,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2018-10-24 16:13:20,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:20,862 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:20,862 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:20,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:20,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1543583780, now seen corresponding path program 1 times [2018-10-24 16:13:20,862 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:20,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:20,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:20,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:20,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2018-10-24 16:13:25,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:25,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:13:25,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:13:25,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:13:25,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:13:25,745 INFO L87 Difference]: Start difference. First operand 126363 states and 132213 transitions. Second operand 5 states. [2018-10-24 16:13:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:36,129 INFO L93 Difference]: Finished difference Result 367803 states and 384865 transitions. [2018-10-24 16:13:36,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:13:36,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 936 [2018-10-24 16:13:36,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:36,405 INFO L225 Difference]: With dead ends: 367803 [2018-10-24 16:13:36,406 INFO L226 Difference]: Without dead ends: 242194 [2018-10-24 16:13:36,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:13:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242194 states. [2018-10-24 16:13:39,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242194 to 193314. [2018-10-24 16:13:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193314 states. [2018-10-24 16:13:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193314 states to 193314 states and 200683 transitions. [2018-10-24 16:13:39,228 INFO L78 Accepts]: Start accepts. Automaton has 193314 states and 200683 transitions. Word has length 936 [2018-10-24 16:13:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:39,229 INFO L481 AbstractCegarLoop]: Abstraction has 193314 states and 200683 transitions. [2018-10-24 16:13:39,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:13:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 193314 states and 200683 transitions. [2018-10-24 16:13:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1300 [2018-10-24 16:13:39,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:39,361 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:39,362 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:39,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:39,362 INFO L82 PathProgramCache]: Analyzing trace with hash -78860113, now seen corresponding path program 1 times [2018-10-24 16:13:39,362 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:39,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:39,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:39,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:39,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 767 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-24 16:13:41,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:41,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:13:41,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:13:41,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:13:41,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:41,674 INFO L87 Difference]: Start difference. First operand 193314 states and 200683 transitions. Second operand 4 states. [2018-10-24 16:13:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:48,796 INFO L93 Difference]: Finished difference Result 386626 states and 401377 transitions. [2018-10-24 16:13:48,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:13:48,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1299 [2018-10-24 16:13:48,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:49,012 INFO L225 Difference]: With dead ends: 386626 [2018-10-24 16:13:49,012 INFO L226 Difference]: Without dead ends: 194066 [2018-10-24 16:13:49,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:49,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194066 states. [2018-10-24 16:13:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194066 to 191810. [2018-10-24 16:13:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191810 states. [2018-10-24 16:13:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191810 states to 191810 states and 198622 transitions. [2018-10-24 16:13:51,419 INFO L78 Accepts]: Start accepts. Automaton has 191810 states and 198622 transitions. Word has length 1299 [2018-10-24 16:13:51,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:51,420 INFO L481 AbstractCegarLoop]: Abstraction has 191810 states and 198622 transitions. [2018-10-24 16:13:51,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:13:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 191810 states and 198622 transitions. [2018-10-24 16:13:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1445 [2018-10-24 16:13:51,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:51,556 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:51,557 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:51,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:51,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1030846367, now seen corresponding path program 1 times [2018-10-24 16:13:51,557 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:51,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:51,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:51,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:51,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:53,259 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 5 [2018-10-24 16:13:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 873 proven. 39 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2018-10-24 16:13:56,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:13:56,530 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:13:56,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:56,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-24 16:14:05,397 WARN L187 SmtUtils]: Removed 10 from assertion stack [2018-10-24 16:14:05,398 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 16:14:05,600 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:14:05,600 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:14:05,606 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:14:05,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:14:05 BoogieIcfgContainer [2018-10-24 16:14:05,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:14:05,607 INFO L168 Benchmark]: Toolchain (without parser) took 224802.33 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 16:14:05,608 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:14:05,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2184.76 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 16:14:05,610 INFO L168 Benchmark]: Boogie Procedure Inliner took 615.89 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 806.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:05,611 INFO L168 Benchmark]: Boogie Preprocessor took 327.95 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:05,611 INFO L168 Benchmark]: RCFGBuilder took 9073.29 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 219.7 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -163.9 MB). Peak memory consumption was 622.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:05,612 INFO L168 Benchmark]: TraceAbstraction took 212594.17 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: -307.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 16:14:05,617 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2184.76 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 615.89 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 806.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 327.95 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9073.29 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 219.7 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -163.9 MB). Peak memory consumption was 622.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212594.17 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: -307.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 129). Cancelled while BasicCegarLoop was analyzing trace of length 1445 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 163. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 212.5s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 164.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4531 SDtfs, 41379 SDslu, 1351 SDs, 0 SdLazy, 75414 SolverSat, 17354 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 131.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1906 GetRequests, 1843 SyntacticMatches, 14 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193314occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 15.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 141435 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 8271 NumberOfCodeBlocks, 8271 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8255 ConstructedInterpolants, 0 QuantifiedInterpolants, 12047846 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2348 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 9923/10792 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown