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/Problem13_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:05:23,940 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:05:23,943 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:05:23,960 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:05:23,960 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:05:23,961 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:05:23,963 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:05:23,965 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:05:23,968 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:05:23,969 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:05:23,970 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:05:23,971 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:05:23,972 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:05:23,979 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:05:23,980 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:05:23,983 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:05:23,984 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:05:23,986 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:05:23,987 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:05:23,991 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:05:23,992 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:05:23,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:05:23,998 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:05:23,999 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:05:23,999 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:05:24,000 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:05:24,002 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:05:24,002 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:05:24,004 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:05:24,005 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:05:24,005 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:05:24,006 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 18:05:24,008 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 18:05:24,008 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 18:05:24,009 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 18:05:24,011 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 18:05:24,011 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 [2018-10-23 18:05:24,035 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:05:24,035 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:05:24,036 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:05:24,036 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:05:24,036 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:05:24,037 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:05:24,038 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:05:24,038 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:05:24,038 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:05:24,038 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:05:24,038 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:05:24,039 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:05:24,039 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:05:24,039 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:05:24,039 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:05:24,039 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:05:24,041 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:05:24,041 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:05:24,041 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:05:24,041 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:05:24,042 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:05:24,042 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:05:24,042 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:05:24,042 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:05:24,042 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:05:24,042 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:05:24,043 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:05:24,043 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:05:24,094 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:05:24,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:05:24,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:05:24,120 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:05:24,120 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:05:24,121 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label28_false-unreach-call.c [2018-10-23 18:05:24,186 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65a5be167/5f37ba8bbeea4ca4b5d8a174e77ee880/FLAGa7d100c42 [2018-10-23 18:05:25,000 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:05:25,001 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label28_false-unreach-call.c [2018-10-23 18:05:25,038 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65a5be167/5f37ba8bbeea4ca4b5d8a174e77ee880/FLAGa7d100c42 [2018-10-23 18:05:25,059 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65a5be167/5f37ba8bbeea4ca4b5d8a174e77ee880 [2018-10-23 18:05:25,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:05:25,073 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:05:25,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:05:25,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:05:25,079 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:05:25,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:05:25" (1/1) ... [2018-10-23 18:05:25,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31246533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:25, skipping insertion in model container [2018-10-23 18:05:25,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:05:25" (1/1) ... [2018-10-23 18:05:25,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:05:25,297 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:05:26,696 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:05:26,702 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:05:27,504 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:05:27,541 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:05:27,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27 WrapperNode [2018-10-23 18:05:27,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:05:27,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:05:27,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:05:27,544 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:05:27,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27" (1/1) ... [2018-10-23 18:05:27,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27" (1/1) ... [2018-10-23 18:05:28,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:05:28,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:05:28,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:05:28,361 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:05:28,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27" (1/1) ... [2018-10-23 18:05:28,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27" (1/1) ... [2018-10-23 18:05:28,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27" (1/1) ... [2018-10-23 18:05:28,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27" (1/1) ... [2018-10-23 18:05:28,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27" (1/1) ... [2018-10-23 18:05:28,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27" (1/1) ... [2018-10-23 18:05:28,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27" (1/1) ... [2018-10-23 18:05:28,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:05:28,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:05:28,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:05:28,858 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:05:28,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27" (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 [2018-10-23 18:05:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:05:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:05:28,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:05:42,610 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:05:42,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:05:42 BoogieIcfgContainer [2018-10-23 18:05:42,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:05:42,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:05:42,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:05:42,615 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:05:42,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:05:25" (1/3) ... [2018-10-23 18:05:42,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367c2819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:05:42, skipping insertion in model container [2018-10-23 18:05:42,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:05:27" (2/3) ... [2018-10-23 18:05:42,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367c2819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:05:42, skipping insertion in model container [2018-10-23 18:05:42,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:05:42" (3/3) ... [2018-10-23 18:05:42,619 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label28_false-unreach-call.c [2018-10-23 18:05:42,628 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:05:42,637 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:05:42,654 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:05:42,699 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:05:42,700 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:05:42,700 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:05:42,700 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:05:42,700 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:05:42,701 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:05:42,701 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:05:42,701 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:05:42,701 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:05:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 18:05:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-23 18:05:42,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:42,754 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:05:42,756 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:42,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:42,762 INFO L82 PathProgramCache]: Analyzing trace with hash 666618706, now seen corresponding path program 1 times [2018-10-23 18:05:42,764 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:42,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:42,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:42,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:42,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:43,161 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 18:05:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:05:43,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:05:43,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:05:43,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:05:43,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:05:43,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:43,192 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 18:06:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:01,045 INFO L93 Difference]: Finished difference Result 3879 states and 7287 transitions. [2018-10-23 18:06:01,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:06:01,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-23 18:06:01,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:01,090 INFO L225 Difference]: With dead ends: 3879 [2018-10-23 18:06:01,090 INFO L226 Difference]: Without dead ends: 2773 [2018-10-23 18:06:01,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:01,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2018-10-23 18:06:01,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2742. [2018-10-23 18:06:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2742 states. [2018-10-23 18:06:01,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 4466 transitions. [2018-10-23 18:06:01,271 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 4466 transitions. Word has length 16 [2018-10-23 18:06:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:01,271 INFO L481 AbstractCegarLoop]: Abstraction has 2742 states and 4466 transitions. [2018-10-23 18:06:01,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:06:01,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 4466 transitions. [2018-10-23 18:06:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-23 18:06:01,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:01,277 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:06:01,278 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:01,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:01,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1158074430, now seen corresponding path program 1 times [2018-10-23 18:06:01,278 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:01,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:01,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:01,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:01,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-23 18:06:01,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:06:01,641 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 [2018-10-23 18:06:01,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:01,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:06:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:06:01,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:06:01,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 18:06:01,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:06:01,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:06:01,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:01,812 INFO L87 Difference]: Start difference. First operand 2742 states and 4466 transitions. Second operand 4 states. [2018-10-23 18:06:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:23,137 INFO L93 Difference]: Finished difference Result 10279 states and 16957 transitions. [2018-10-23 18:06:23,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:06:23,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-23 18:06:23,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:23,179 INFO L225 Difference]: With dead ends: 10279 [2018-10-23 18:06:23,179 INFO L226 Difference]: Without dead ends: 7539 [2018-10-23 18:06:23,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:06:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7539 states. [2018-10-23 18:06:23,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7539 to 5128. [2018-10-23 18:06:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5128 states. [2018-10-23 18:06:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5128 states to 5128 states and 8009 transitions. [2018-10-23 18:06:23,304 INFO L78 Accepts]: Start accepts. Automaton has 5128 states and 8009 transitions. Word has length 106 [2018-10-23 18:06:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:23,305 INFO L481 AbstractCegarLoop]: Abstraction has 5128 states and 8009 transitions. [2018-10-23 18:06:23,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:06:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5128 states and 8009 transitions. [2018-10-23 18:06:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-23 18:06:23,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:23,313 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:06:23,314 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:23,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:23,314 INFO L82 PathProgramCache]: Analyzing trace with hash 305775270, now seen corresponding path program 1 times [2018-10-23 18:06:23,314 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:23,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:23,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:23,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:23,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-23 18:06:23,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:06:23,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:06:23,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:06:23,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:06:23,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:06:23,991 INFO L87 Difference]: Start difference. First operand 5128 states and 8009 transitions. Second operand 5 states. [2018-10-23 18:06:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:37,976 INFO L93 Difference]: Finished difference Result 16563 states and 25362 transitions. [2018-10-23 18:06:37,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:06:37,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2018-10-23 18:06:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:38,024 INFO L225 Difference]: With dead ends: 16563 [2018-10-23 18:06:38,024 INFO L226 Difference]: Without dead ends: 11437 [2018-10-23 18:06:38,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:06:38,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11437 states. [2018-10-23 18:06:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11437 to 11436. [2018-10-23 18:06:38,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11436 states. [2018-10-23 18:06:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 15909 transitions. [2018-10-23 18:06:38,230 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 15909 transitions. Word has length 155 [2018-10-23 18:06:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:38,231 INFO L481 AbstractCegarLoop]: Abstraction has 11436 states and 15909 transitions. [2018-10-23 18:06:38,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:06:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 15909 transitions. [2018-10-23 18:06:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-23 18:06:38,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:38,234 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:06:38,234 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:38,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:38,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1703937609, now seen corresponding path program 1 times [2018-10-23 18:06:38,235 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:38,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:38,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:38,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:38,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:38,556 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 18:06:38,590 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 27 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-23 18:06:38,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:06:38,591 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 [2018-10-23 18:06:38,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:38,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:06:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:06:38,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:06:38,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 18:06:38,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:06:38,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:06:38,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:06:38,854 INFO L87 Difference]: Start difference. First operand 11436 states and 15909 transitions. Second operand 5 states. [2018-10-23 18:06:51,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:51,938 INFO L93 Difference]: Finished difference Result 43401 states and 61089 transitions. [2018-10-23 18:06:51,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:06:51,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2018-10-23 18:06:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:52,038 INFO L225 Difference]: With dead ends: 43401 [2018-10-23 18:06:52,038 INFO L226 Difference]: Without dead ends: 32755 [2018-10-23 18:06:52,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:06:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32755 states. [2018-10-23 18:06:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32755 to 25621. [2018-10-23 18:06:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25621 states. [2018-10-23 18:06:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25621 states to 25621 states and 33098 transitions. [2018-10-23 18:06:52,523 INFO L78 Accepts]: Start accepts. Automaton has 25621 states and 33098 transitions. Word has length 181 [2018-10-23 18:06:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:52,523 INFO L481 AbstractCegarLoop]: Abstraction has 25621 states and 33098 transitions. [2018-10-23 18:06:52,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:06:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand 25621 states and 33098 transitions. [2018-10-23 18:06:52,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-23 18:06:52,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:52,527 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:06:52,530 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:52,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:52,530 INFO L82 PathProgramCache]: Analyzing trace with hash -472738906, now seen corresponding path program 1 times [2018-10-23 18:06:52,530 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:52,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:52,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:52,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:52,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-23 18:06:52,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:06:52,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:06:52,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:06:52,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:06:52,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:06:52,780 INFO L87 Difference]: Start difference. First operand 25621 states and 33098 transitions. Second operand 3 states. [2018-10-23 18:07:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:01,924 INFO L93 Difference]: Finished difference Result 73301 states and 95285 transitions. [2018-10-23 18:07:01,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:07:01,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-10-23 18:07:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:01,996 INFO L225 Difference]: With dead ends: 73301 [2018-10-23 18:07:01,996 INFO L226 Difference]: Without dead ends: 48470 [2018-10-23 18:07:02,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:07:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48470 states. [2018-10-23 18:07:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48470 to 48469. [2018-10-23 18:07:02,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48469 states. [2018-10-23 18:07:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48469 states to 48469 states and 58804 transitions. [2018-10-23 18:07:02,623 INFO L78 Accepts]: Start accepts. Automaton has 48469 states and 58804 transitions. Word has length 192 [2018-10-23 18:07:02,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:02,624 INFO L481 AbstractCegarLoop]: Abstraction has 48469 states and 58804 transitions. [2018-10-23 18:07:02,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:07:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 48469 states and 58804 transitions. [2018-10-23 18:07:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-23 18:07:02,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:02,632 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:07:02,632 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:02,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:02,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1442007739, now seen corresponding path program 1 times [2018-10-23 18:07:02,633 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:02,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:02,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:02,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:02,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:03,259 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-23 18:07:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 184 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-10-23 18:07:03,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:07:03,406 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 [2018-10-23 18:07:03,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:03,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:07:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-23 18:07:03,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:07:03,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 18:07:03,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:07:03,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:07:03,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:03,679 INFO L87 Difference]: Start difference. First operand 48469 states and 58804 transitions. Second operand 4 states. [2018-10-23 18:07:14,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:14,355 INFO L93 Difference]: Finished difference Result 114312 states and 136549 transitions. [2018-10-23 18:07:14,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:07:14,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 309 [2018-10-23 18:07:14,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:14,442 INFO L225 Difference]: With dead ends: 114312 [2018-10-23 18:07:14,442 INFO L226 Difference]: Without dead ends: 66633 [2018-10-23 18:07:14,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66633 states. [2018-10-23 18:07:15,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66633 to 57138. [2018-10-23 18:07:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57138 states. [2018-10-23 18:07:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57138 states to 57138 states and 68104 transitions. [2018-10-23 18:07:15,246 INFO L78 Accepts]: Start accepts. Automaton has 57138 states and 68104 transitions. Word has length 309 [2018-10-23 18:07:15,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:15,247 INFO L481 AbstractCegarLoop]: Abstraction has 57138 states and 68104 transitions. [2018-10-23 18:07:15,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:07:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 57138 states and 68104 transitions. [2018-10-23 18:07:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-23 18:07:15,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:15,257 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:07:15,257 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:15,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:15,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1145284850, now seen corresponding path program 1 times [2018-10-23 18:07:15,258 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:15,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:15,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:15,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:15,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-23 18:07:15,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:15,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:07:15,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:07:15,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:07:15,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:15,683 INFO L87 Difference]: Start difference. First operand 57138 states and 68104 transitions. Second operand 4 states. [2018-10-23 18:07:27,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:27,981 INFO L93 Difference]: Finished difference Result 122940 states and 146167 transitions. [2018-10-23 18:07:27,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:07:27,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 338 [2018-10-23 18:07:27,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:28,069 INFO L225 Difference]: With dead ends: 122940 [2018-10-23 18:07:28,069 INFO L226 Difference]: Without dead ends: 57862 [2018-10-23 18:07:28,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57862 states. [2018-10-23 18:07:28,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57862 to 50769. [2018-10-23 18:07:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50769 states. [2018-10-23 18:07:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50769 states to 50769 states and 59099 transitions. [2018-10-23 18:07:28,657 INFO L78 Accepts]: Start accepts. Automaton has 50769 states and 59099 transitions. Word has length 338 [2018-10-23 18:07:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:28,658 INFO L481 AbstractCegarLoop]: Abstraction has 50769 states and 59099 transitions. [2018-10-23 18:07:28,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:07:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 50769 states and 59099 transitions. [2018-10-23 18:07:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-23 18:07:28,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:28,666 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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] [2018-10-23 18:07:28,666 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:28,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:28,667 INFO L82 PathProgramCache]: Analyzing trace with hash -772890852, now seen corresponding path program 1 times [2018-10-23 18:07:28,667 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:28,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:28,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:28,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:28,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-23 18:07:29,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:29,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:07:29,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:07:29,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:07:29,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:29,244 INFO L87 Difference]: Start difference. First operand 50769 states and 59099 transitions. Second operand 4 states. [2018-10-23 18:07:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:42,000 INFO L93 Difference]: Finished difference Result 130717 states and 153407 transitions. [2018-10-23 18:07:42,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:07:42,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 358 [2018-10-23 18:07:42,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:42,095 INFO L225 Difference]: With dead ends: 130717 [2018-10-23 18:07:42,095 INFO L226 Difference]: Without dead ends: 80738 [2018-10-23 18:07:42,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:07:42,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80738 states. [2018-10-23 18:07:42,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80738 to 78349. [2018-10-23 18:07:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78349 states. [2018-10-23 18:07:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78349 states to 78349 states and 89264 transitions. [2018-10-23 18:07:42,746 INFO L78 Accepts]: Start accepts. Automaton has 78349 states and 89264 transitions. Word has length 358 [2018-10-23 18:07:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:42,746 INFO L481 AbstractCegarLoop]: Abstraction has 78349 states and 89264 transitions. [2018-10-23 18:07:42,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:07:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 78349 states and 89264 transitions. [2018-10-23 18:07:42,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-10-23 18:07:42,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:42,755 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:07:42,755 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:42,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:42,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1803461265, now seen corresponding path program 1 times [2018-10-23 18:07:42,756 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:42,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:42,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:42,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:42,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-23 18:07:43,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:07:43,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:07:43,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:07:43,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:07:43,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:07:43,080 INFO L87 Difference]: Start difference. First operand 78349 states and 89264 transitions. Second operand 5 states. [2018-10-23 18:08:04,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:04,583 INFO L93 Difference]: Finished difference Result 283823 states and 322965 transitions. [2018-10-23 18:08:04,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:08:04,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 373 [2018-10-23 18:08:04,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:04,850 INFO L225 Difference]: With dead ends: 283823 [2018-10-23 18:08:04,851 INFO L226 Difference]: Without dead ends: 206261 [2018-10-23 18:08:04,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:08:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206261 states. [2018-10-23 18:08:07,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206261 to 195057. [2018-10-23 18:08:07,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195057 states. [2018-10-23 18:08:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195057 states to 195057 states and 217964 transitions. [2018-10-23 18:08:07,818 INFO L78 Accepts]: Start accepts. Automaton has 195057 states and 217964 transitions. Word has length 373 [2018-10-23 18:08:07,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:07,818 INFO L481 AbstractCegarLoop]: Abstraction has 195057 states and 217964 transitions. [2018-10-23 18:08:07,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:08:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 195057 states and 217964 transitions. [2018-10-23 18:08:07,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-10-23 18:08:07,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:07,829 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:08:07,829 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:07,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:07,829 INFO L82 PathProgramCache]: Analyzing trace with hash 2125912829, now seen corresponding path program 1 times [2018-10-23 18:08:07,829 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:07,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:07,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:07,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:07,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 697 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-10-23 18:08:08,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:08,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:08:08,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:08:08,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:08:08,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:08,437 INFO L87 Difference]: Start difference. First operand 195057 states and 217964 transitions. Second operand 4 states. [2018-10-23 18:08:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:19,158 INFO L93 Difference]: Finished difference Result 387786 states and 433461 transitions. [2018-10-23 18:08:19,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:08:19,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 463 [2018-10-23 18:08:19,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:19,380 INFO L225 Difference]: With dead ends: 387786 [2018-10-23 18:08:19,380 INFO L226 Difference]: Without dead ends: 193519 [2018-10-23 18:08:19,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193519 states. [2018-10-23 18:08:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193519 to 191900. [2018-10-23 18:08:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191900 states. [2018-10-23 18:08:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191900 states to 191900 states and 207829 transitions. [2018-10-23 18:08:21,027 INFO L78 Accepts]: Start accepts. Automaton has 191900 states and 207829 transitions. Word has length 463 [2018-10-23 18:08:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:21,027 INFO L481 AbstractCegarLoop]: Abstraction has 191900 states and 207829 transitions. [2018-10-23 18:08:21,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:08:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 191900 states and 207829 transitions. [2018-10-23 18:08:21,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-10-23 18:08:21,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:21,037 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:08:21,037 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:21,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:21,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1451251648, now seen corresponding path program 1 times [2018-10-23 18:08:21,037 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:21,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:21,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:21,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:21,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 536 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-10-23 18:08:22,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:22,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:08:22,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:08:22,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:08:22,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:22,978 INFO L87 Difference]: Start difference. First operand 191900 states and 207829 transitions. Second operand 4 states. [2018-10-23 18:08:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:08:45,507 INFO L93 Difference]: Finished difference Result 429655 states and 465861 transitions. [2018-10-23 18:08:45,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:08:45,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 474 [2018-10-23 18:08:45,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:08:45,837 INFO L225 Difference]: With dead ends: 429655 [2018-10-23 18:08:45,837 INFO L226 Difference]: Without dead ends: 238545 [2018-10-23 18:08:45,943 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 [2018-10-23 18:08:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238545 states. [2018-10-23 18:08:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238545 to 236838. [2018-10-23 18:08:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236838 states. [2018-10-23 18:08:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236838 states to 236838 states and 256050 transitions. [2018-10-23 18:08:54,139 INFO L78 Accepts]: Start accepts. Automaton has 236838 states and 256050 transitions. Word has length 474 [2018-10-23 18:08:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:08:54,140 INFO L481 AbstractCegarLoop]: Abstraction has 236838 states and 256050 transitions. [2018-10-23 18:08:54,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:08:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 236838 states and 256050 transitions. [2018-10-23 18:08:54,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-10-23 18:08:54,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:54,148 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-23 18:08:54,148 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:54,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash -747758649, now seen corresponding path program 1 times [2018-10-23 18:08:54,149 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:54,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:54,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:54,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:54,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 591 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-10-23 18:08:54,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:54,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:08:54,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:08:54,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:08:54,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:08:54,641 INFO L87 Difference]: Start difference. First operand 236838 states and 256050 transitions. Second operand 4 states. [2018-10-23 18:09:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:04,195 INFO L93 Difference]: Finished difference Result 460228 states and 498400 transitions. [2018-10-23 18:09:04,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:09:04,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 493 [2018-10-23 18:09:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:04,507 INFO L225 Difference]: With dead ends: 460228 [2018-10-23 18:09:04,508 INFO L226 Difference]: Without dead ends: 224180 [2018-10-23 18:09:04,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:09:04,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224180 states. [2018-10-23 18:09:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224180 to 217871. [2018-10-23 18:09:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217871 states. [2018-10-23 18:09:07,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217871 states to 217871 states and 229829 transitions. [2018-10-23 18:09:07,036 INFO L78 Accepts]: Start accepts. Automaton has 217871 states and 229829 transitions. Word has length 493 [2018-10-23 18:09:07,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:07,037 INFO L481 AbstractCegarLoop]: Abstraction has 217871 states and 229829 transitions. [2018-10-23 18:09:07,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:09:07,037 INFO L276 IsEmpty]: Start isEmpty. Operand 217871 states and 229829 transitions. [2018-10-23 18:09:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-10-23 18:09:07,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:07,042 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:09:07,042 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:07,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:07,043 INFO L82 PathProgramCache]: Analyzing trace with hash -424031071, now seen corresponding path program 1 times [2018-10-23 18:09:07,043 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:07,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:07,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:07,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:07,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2018-10-23 18:09:08,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:08,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:09:08,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:09:08,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:09:08,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:09:08,352 INFO L87 Difference]: Start difference. First operand 217871 states and 229829 transitions. Second operand 3 states. [2018-10-23 18:09:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:12,999 INFO L93 Difference]: Finished difference Result 434150 states and 457952 transitions. [2018-10-23 18:09:13,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:09:13,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 499 [2018-10-23 18:09:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:13,216 INFO L225 Difference]: With dead ends: 434150 [2018-10-23 18:09:13,217 INFO L226 Difference]: Without dead ends: 217067 [2018-10-23 18:09:13,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:09:13,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217067 states. [2018-10-23 18:09:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217067 to 217067. [2018-10-23 18:09:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217067 states. [2018-10-23 18:09:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217067 states to 217067 states and 228892 transitions. [2018-10-23 18:09:15,833 INFO L78 Accepts]: Start accepts. Automaton has 217067 states and 228892 transitions. Word has length 499 [2018-10-23 18:09:15,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:15,833 INFO L481 AbstractCegarLoop]: Abstraction has 217067 states and 228892 transitions. [2018-10-23 18:09:15,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:09:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 217067 states and 228892 transitions. [2018-10-23 18:09:15,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-10-23 18:09:15,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:15,840 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-23 18:09:15,841 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:15,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:15,841 INFO L82 PathProgramCache]: Analyzing trace with hash 118459583, now seen corresponding path program 1 times [2018-10-23 18:09:15,841 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:15,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:15,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:15,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:15,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY Received shutdown request... [2018-10-23 18:09:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-10-23 18:09:15,881 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 18:09:15,881 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 18:09:15,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:16,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:09:16,045 WARN L187 SmtUtils]: Removed 1 from assertion stack [2018-10-23 18:09:16,045 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 18:09:16,246 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 18:09:16,246 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:09:16,252 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:09:16,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:09:16 BoogieIcfgContainer [2018-10-23 18:09:16,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:09:16,253 INFO L168 Benchmark]: Toolchain (without parser) took 231180.74 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -238.9 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-23 18:09:16,254 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 18:09:16,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2468.55 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:09:16,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 817.22 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 846.7 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 73.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:09:16,256 INFO L168 Benchmark]: Boogie Preprocessor took 497.00 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: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:09:16,257 INFO L168 Benchmark]: RCFGBuilder took 13753.13 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 224.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 47.0 MB). Peak memory consumption was 588.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:09:16,257 INFO L168 Benchmark]: TraceAbstraction took 213640.09 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 445.1 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-23 18:09:16,262 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2468.55 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 817.22 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 846.7 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 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 497.00 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: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13753.13 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 224.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 47.0 MB). Peak memory consumption was 588.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213640.09 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 445.1 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 57). Cancelled while BasicCegarLoop was analyzing trace of length 505 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 213.5s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 182.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9532 SDtfs, 28925 SDslu, 3450 SDs, 0 SdLazy, 62421 SolverSat, 14026 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 151.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 647 GetRequests, 610 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236838occurred 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: 21.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 49394 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 4553 NumberOfCodeBlocks, 4553 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4537 ConstructedInterpolants, 0 QuantifiedInterpolants, 3927022 SizeOfPredicates, 1 NumberOfNonLiveVariables, 877 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 16 InterpolantComputations, 13 PerfectInterpolantSequences, 5486/5560 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown