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_label16_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:08:23,053 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:08:23,060 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:08:23,071 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:08:23,072 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:08:23,073 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:08:23,074 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:08:23,076 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:08:23,077 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:08:23,078 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:08:23,079 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:08:23,079 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:08:23,080 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:08:23,081 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:08:23,082 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:08:23,083 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:08:23,084 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:08:23,086 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:08:23,088 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:08:23,089 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:08:23,090 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:08:23,092 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:08:23,094 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:08:23,094 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:08:23,095 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:08:23,096 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:08:23,097 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:08:23,097 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:08:23,098 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:08:23,099 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:08:23,100 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:08:23,100 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:08:23,100 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:08:23,101 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:08:23,102 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:08:23,102 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:08:23,103 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:08:23,126 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:08:23,126 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:08:23,127 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:08:23,128 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:08:23,128 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:08:23,128 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:08:23,129 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:08:23,129 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:08:23,129 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:08:23,129 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:08:23,129 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:08:23,129 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:08:23,130 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:08:23,130 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:08:23,130 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:08:23,130 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:08:23,130 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:08:23,131 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:08:23,131 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:08:23,131 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:08:23,131 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:08:23,131 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:08:23,132 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:08:23,132 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:08:23,132 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:08:23,132 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:08:23,132 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:08:23,133 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:08:23,185 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:08:23,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:08:23,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:08:23,208 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:08:23,209 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:08:23,210 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16_false-unreach-call.c [2018-10-24 14:08:23,278 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e7d8d2040/fb7ebd9fc310490890c3e77d1cc43eae/FLAG51ce7bda7 [2018-10-24 14:08:24,115 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:08:24,116 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label16_false-unreach-call.c [2018-10-24 14:08:24,155 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e7d8d2040/fb7ebd9fc310490890c3e77d1cc43eae/FLAG51ce7bda7 [2018-10-24 14:08:24,174 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e7d8d2040/fb7ebd9fc310490890c3e77d1cc43eae [2018-10-24 14:08:24,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:08:24,188 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:08:24,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:08:24,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:08:24,193 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:08:24,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:08:24" (1/1) ... [2018-10-24 14:08:24,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d4e6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:24, skipping insertion in model container [2018-10-24 14:08:24,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:08:24" (1/1) ... [2018-10-24 14:08:24,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:08:24,395 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:08:25,980 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:08:25,985 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:08:26,686 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:08:26,726 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:08:26,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26 WrapperNode [2018-10-24 14:08:26,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:08:26,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:08:26,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:08:26,729 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:08:26,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26" (1/1) ... [2018-10-24 14:08:26,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26" (1/1) ... [2018-10-24 14:08:27,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:08:27,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:08:27,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:08:27,536 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:08:27,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26" (1/1) ... [2018-10-24 14:08:27,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26" (1/1) ... [2018-10-24 14:08:27,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26" (1/1) ... [2018-10-24 14:08:27,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26" (1/1) ... [2018-10-24 14:08:27,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26" (1/1) ... [2018-10-24 14:08:27,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26" (1/1) ... [2018-10-24 14:08:28,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26" (1/1) ... [2018-10-24 14:08:28,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:08:28,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:08:28,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:08:28,177 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:08:28,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:08:28,246 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:08:28,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:08:28,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:08:44,145 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:08:44,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:08:44 BoogieIcfgContainer [2018-10-24 14:08:44,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:08:44,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:08:44,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:08:44,151 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:08:44,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:08:24" (1/3) ... [2018-10-24 14:08:44,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f82a31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:08:44, skipping insertion in model container [2018-10-24 14:08:44,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:26" (2/3) ... [2018-10-24 14:08:44,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f82a31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:08:44, skipping insertion in model container [2018-10-24 14:08:44,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:08:44" (3/3) ... [2018-10-24 14:08:44,155 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label16_false-unreach-call.c [2018-10-24 14:08:44,166 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:08:44,178 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:08:44,197 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:08:44,248 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:08:44,249 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:08:44,249 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:08:44,250 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:08:44,250 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:08:44,250 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:08:44,250 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:08:44,250 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:08:44,250 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:08:44,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:08:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-24 14:08:44,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:44,309 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] [2018-10-24 14:08:44,313 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:44,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:44,322 INFO L82 PathProgramCache]: Analyzing trace with hash -314381782, now seen corresponding path program 1 times [2018-10-24 14:08:44,324 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:44,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:44,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:44,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:44,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:44,760 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:08:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:08:44,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:44,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:08:44,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:08:44,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:08:44,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:08:44,808 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 14:09:05,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:05,296 INFO L93 Difference]: Finished difference Result 3866 states and 7262 transitions. [2018-10-24 14:09:05,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:05,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-24 14:09:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:05,343 INFO L225 Difference]: With dead ends: 3866 [2018-10-24 14:09:05,344 INFO L226 Difference]: Without dead ends: 2760 [2018-10-24 14:09:05,354 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 14:09:05,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2018-10-24 14:09:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2741. [2018-10-24 14:09:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2741 states. [2018-10-24 14:09:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4467 transitions. [2018-10-24 14:09:05,520 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4467 transitions. Word has length 23 [2018-10-24 14:09:05,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:05,520 INFO L481 AbstractCegarLoop]: Abstraction has 2741 states and 4467 transitions. [2018-10-24 14:09:05,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:05,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4467 transitions. [2018-10-24 14:09:05,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-24 14:09:05,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:05,525 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:09:05,525 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:05,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:05,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1936009281, now seen corresponding path program 1 times [2018-10-24 14:09:05,526 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:05,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:05,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:05,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:05,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:06,446 WARN L179 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 14:09:06,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:06,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:06,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:09:06,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:09:06,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:09:06,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:09:06,742 INFO L87 Difference]: Start difference. First operand 2741 states and 4467 transitions. Second operand 5 states. [2018-10-24 14:09:06,996 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 14:09:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:23,742 INFO L93 Difference]: Finished difference Result 9437 states and 14864 transitions. [2018-10-24 14:09:23,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:09:23,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2018-10-24 14:09:23,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:23,776 INFO L225 Difference]: With dead ends: 9437 [2018-10-24 14:09:23,777 INFO L226 Difference]: Without dead ends: 6698 [2018-10-24 14:09:23,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:09:23,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6698 states. [2018-10-24 14:09:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6698 to 6697. [2018-10-24 14:09:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6697 states. [2018-10-24 14:09:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6697 states to 6697 states and 9386 transitions. [2018-10-24 14:09:23,910 INFO L78 Accepts]: Start accepts. Automaton has 6697 states and 9386 transitions. Word has length 96 [2018-10-24 14:09:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:23,911 INFO L481 AbstractCegarLoop]: Abstraction has 6697 states and 9386 transitions. [2018-10-24 14:09:23,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:09:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 6697 states and 9386 transitions. [2018-10-24 14:09:23,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-24 14:09:23,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:23,920 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:09:23,920 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:23,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:23,921 INFO L82 PathProgramCache]: Analyzing trace with hash 758603307, now seen corresponding path program 1 times [2018-10-24 14:09:23,921 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:23,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:23,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:23,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:23,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 14:09:24,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:24,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:09:24,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:09:24,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:09:24,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:09:24,311 INFO L87 Difference]: Start difference. First operand 6697 states and 9386 transitions. Second operand 3 states. [2018-10-24 14:09:31,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:31,811 INFO L93 Difference]: Finished difference Result 17338 states and 25183 transitions. [2018-10-24 14:09:31,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:09:31,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2018-10-24 14:09:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:31,863 INFO L225 Difference]: With dead ends: 17338 [2018-10-24 14:09:31,863 INFO L226 Difference]: Without dead ends: 11431 [2018-10-24 14:09:31,874 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 [2018-10-24 14:09:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11431 states. [2018-10-24 14:09:32,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11431 to 11430. [2018-10-24 14:09:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2018-10-24 14:09:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 15069 transitions. [2018-10-24 14:09:32,067 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 15069 transitions. Word has length 222 [2018-10-24 14:09:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:32,068 INFO L481 AbstractCegarLoop]: Abstraction has 11430 states and 15069 transitions. [2018-10-24 14:09:32,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:09:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 15069 transitions. [2018-10-24 14:09:32,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-24 14:09:32,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:32,072 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:09:32,072 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:32,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -842457281, now seen corresponding path program 1 times [2018-10-24 14:09:32,073 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:32,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:32,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:32,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:32,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 45 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:32,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:09:32,554 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:09:32,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:32,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:09:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:32,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:09:32,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:09:32,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:09:32,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:09:32,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:09:32,973 INFO L87 Difference]: Start difference. First operand 11430 states and 15069 transitions. Second operand 6 states. [2018-10-24 14:10:01,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:01,626 INFO L93 Difference]: Finished difference Result 64102 states and 87604 transitions. [2018-10-24 14:10:01,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:10:01,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-10-24 14:10:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:01,742 INFO L225 Difference]: With dead ends: 64102 [2018-10-24 14:10:01,742 INFO L226 Difference]: Without dead ends: 53462 [2018-10-24 14:10:01,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:10:01,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53462 states. [2018-10-24 14:10:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53462 to 53290. [2018-10-24 14:10:02,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53290 states. [2018-10-24 14:10:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53290 states to 53290 states and 67389 transitions. [2018-10-24 14:10:02,793 INFO L78 Accepts]: Start accepts. Automaton has 53290 states and 67389 transitions. Word has length 224 [2018-10-24 14:10:02,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:02,794 INFO L481 AbstractCegarLoop]: Abstraction has 53290 states and 67389 transitions. [2018-10-24 14:10:02,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:10:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 53290 states and 67389 transitions. [2018-10-24 14:10:02,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-24 14:10:02,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:02,801 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:02,801 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:02,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:02,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1143988118, now seen corresponding path program 1 times [2018-10-24 14:10:02,802 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:02,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:02,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:02,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:02,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-24 14:10:03,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:03,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:03,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:03,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:03,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:03,117 INFO L87 Difference]: Start difference. First operand 53290 states and 67389 transitions. Second operand 4 states. [2018-10-24 14:10:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:17,533 INFO L93 Difference]: Finished difference Result 114430 states and 146210 transitions. [2018-10-24 14:10:17,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:17,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2018-10-24 14:10:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:17,730 INFO L225 Difference]: With dead ends: 114430 [2018-10-24 14:10:17,730 INFO L226 Difference]: Without dead ends: 61930 [2018-10-24 14:10:17,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61930 states. [2018-10-24 14:10:18,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61930 to 61928. [2018-10-24 14:10:18,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61928 states. [2018-10-24 14:10:18,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61928 states to 61928 states and 73357 transitions. [2018-10-24 14:10:18,470 INFO L78 Accepts]: Start accepts. Automaton has 61928 states and 73357 transitions. Word has length 241 [2018-10-24 14:10:18,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:18,471 INFO L481 AbstractCegarLoop]: Abstraction has 61928 states and 73357 transitions. [2018-10-24 14:10:18,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:18,471 INFO L276 IsEmpty]: Start isEmpty. Operand 61928 states and 73357 transitions. [2018-10-24 14:10:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-10-24 14:10:18,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:18,496 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:10:18,496 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:18,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:18,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1027644431, now seen corresponding path program 1 times [2018-10-24 14:10:18,497 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:18,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:18,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:18,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:18,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 14:10:18,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:18,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:10:18,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:10:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:10:18,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:10:18,974 INFO L87 Difference]: Start difference. First operand 61928 states and 73357 transitions. Second operand 3 states. [2018-10-24 14:10:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:25,755 INFO L93 Difference]: Finished difference Result 123836 states and 146682 transitions. [2018-10-24 14:10:25,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:10:25,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 416 [2018-10-24 14:10:25,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:25,849 INFO L225 Difference]: With dead ends: 123836 [2018-10-24 14:10:25,850 INFO L226 Difference]: Without dead ends: 62698 [2018-10-24 14:10:25,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:10:25,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62698 states. [2018-10-24 14:10:27,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62698 to 58747. [2018-10-24 14:10:27,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58747 states. [2018-10-24 14:10:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58747 states to 58747 states and 66287 transitions. [2018-10-24 14:10:27,075 INFO L78 Accepts]: Start accepts. Automaton has 58747 states and 66287 transitions. Word has length 416 [2018-10-24 14:10:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:27,076 INFO L481 AbstractCegarLoop]: Abstraction has 58747 states and 66287 transitions. [2018-10-24 14:10:27,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:10:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 58747 states and 66287 transitions. [2018-10-24 14:10:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2018-10-24 14:10:27,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:27,108 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 14:10:27,108 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:27,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash -342475389, now seen corresponding path program 1 times [2018-10-24 14:10:27,109 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:27,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:27,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:27,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:27,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-10-24 14:10:27,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:27,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:27,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:27,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:27,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:27,608 INFO L87 Difference]: Start difference. First operand 58747 states and 66287 transitions. Second operand 4 states. [2018-10-24 14:10:40,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:40,878 INFO L93 Difference]: Finished difference Result 186903 states and 211896 transitions. [2018-10-24 14:10:40,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:40,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 503 [2018-10-24 14:10:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:41,052 INFO L225 Difference]: With dead ends: 186903 [2018-10-24 14:10:41,052 INFO L226 Difference]: Without dead ends: 124204 [2018-10-24 14:10:41,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124204 states. [2018-10-24 14:10:42,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124204 to 119465. [2018-10-24 14:10:42,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119465 states. [2018-10-24 14:10:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119465 states to 119465 states and 131290 transitions. [2018-10-24 14:10:42,224 INFO L78 Accepts]: Start accepts. Automaton has 119465 states and 131290 transitions. Word has length 503 [2018-10-24 14:10:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:42,225 INFO L481 AbstractCegarLoop]: Abstraction has 119465 states and 131290 transitions. [2018-10-24 14:10:42,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:42,225 INFO L276 IsEmpty]: Start isEmpty. Operand 119465 states and 131290 transitions. [2018-10-24 14:10:42,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-10-24 14:10:42,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:42,255 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 14:10:42,255 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:42,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:42,256 INFO L82 PathProgramCache]: Analyzing trace with hash -204363812, now seen corresponding path program 1 times [2018-10-24 14:10:42,256 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:42,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:42,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:42,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:42,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-24 14:10:42,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:42,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:42,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:42,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:42,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:42,686 INFO L87 Difference]: Start difference. First operand 119465 states and 131290 transitions. Second operand 4 states. [2018-10-24 14:10:55,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:55,915 INFO L93 Difference]: Finished difference Result 261800 states and 288332 transitions. [2018-10-24 14:10:55,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:55,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 508 [2018-10-24 14:10:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:56,120 INFO L225 Difference]: With dead ends: 261800 [2018-10-24 14:10:56,120 INFO L226 Difference]: Without dead ends: 139965 [2018-10-24 14:10:56,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139965 states. [2018-10-24 14:10:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139965 to 136000. [2018-10-24 14:10:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136000 states. [2018-10-24 14:10:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136000 states to 136000 states and 146757 transitions. [2018-10-24 14:10:57,943 INFO L78 Accepts]: Start accepts. Automaton has 136000 states and 146757 transitions. Word has length 508 [2018-10-24 14:10:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:57,944 INFO L481 AbstractCegarLoop]: Abstraction has 136000 states and 146757 transitions. [2018-10-24 14:10:57,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:57,944 INFO L276 IsEmpty]: Start isEmpty. Operand 136000 states and 146757 transitions. [2018-10-24 14:10:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2018-10-24 14:10:57,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:57,974 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 14:10:57,975 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:57,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:57,975 INFO L82 PathProgramCache]: Analyzing trace with hash 400334723, now seen corresponding path program 1 times [2018-10-24 14:10:57,975 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:57,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:57,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:57,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:57,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:58,616 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:11:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 545 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-24 14:11:00,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:00,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:00,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:11:00,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:11:00,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:00,093 INFO L87 Difference]: Start difference. First operand 136000 states and 146757 transitions. Second operand 4 states. [2018-10-24 14:11:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:12,494 INFO L93 Difference]: Finished difference Result 271229 states and 292747 transitions. [2018-10-24 14:11:12,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:11:12,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 545 [2018-10-24 14:11:12,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:13,625 INFO L225 Difference]: With dead ends: 271229 [2018-10-24 14:11:13,625 INFO L226 Difference]: Without dead ends: 136019 [2018-10-24 14:11:13,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:13,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136019 states. [2018-10-24 14:11:14,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136019 to 125746. [2018-10-24 14:11:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125746 states. [2018-10-24 14:11:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125746 states to 125746 states and 133679 transitions. [2018-10-24 14:11:14,720 INFO L78 Accepts]: Start accepts. Automaton has 125746 states and 133679 transitions. Word has length 545 [2018-10-24 14:11:14,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:14,722 INFO L481 AbstractCegarLoop]: Abstraction has 125746 states and 133679 transitions. [2018-10-24 14:11:14,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:11:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 125746 states and 133679 transitions. [2018-10-24 14:11:14,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2018-10-24 14:11:14,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:14,740 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-24 14:11:14,740 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:14,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:14,740 INFO L82 PathProgramCache]: Analyzing trace with hash -944064124, now seen corresponding path program 1 times [2018-10-24 14:11:14,741 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:14,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:14,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:14,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:14,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 790 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2018-10-24 14:11:15,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:15,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:15,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:11:15,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:11:15,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:15,271 INFO L87 Difference]: Start difference. First operand 125746 states and 133679 transitions. Second operand 4 states. [2018-10-24 14:11:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:25,426 INFO L93 Difference]: Finished difference Result 248347 states and 264180 transitions. [2018-10-24 14:11:25,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:11:25,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 573 [2018-10-24 14:11:25,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:25,589 INFO L225 Difference]: With dead ends: 248347 [2018-10-24 14:11:25,590 INFO L226 Difference]: Without dead ends: 121020 [2018-10-24 14:11:25,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121020 states. [2018-10-24 14:11:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121020 to 113902. [2018-10-24 14:11:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113902 states. [2018-10-24 14:11:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113902 states to 113902 states and 119079 transitions. [2018-10-24 14:11:27,810 INFO L78 Accepts]: Start accepts. Automaton has 113902 states and 119079 transitions. Word has length 573 [2018-10-24 14:11:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:27,811 INFO L481 AbstractCegarLoop]: Abstraction has 113902 states and 119079 transitions. [2018-10-24 14:11:27,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:11:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 113902 states and 119079 transitions. [2018-10-24 14:11:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2018-10-24 14:11:27,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:27,830 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:11:27,830 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:27,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:27,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2058609535, now seen corresponding path program 1 times [2018-10-24 14:11:27,831 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:27,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:27,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:27,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:27,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 775 proven. 91 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2018-10-24 14:11:28,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:11:28,383 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:11:28,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:28,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:11:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2018-10-24 14:11:30,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:11:30,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:11:30,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:11:30,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:11:30,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:11:30,225 INFO L87 Difference]: Start difference. First operand 113902 states and 119079 transitions. Second operand 6 states. [2018-10-24 14:11:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:53,022 INFO L93 Difference]: Finished difference Result 363472 states and 380162 transitions. [2018-10-24 14:11:53,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:11:53,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 634 [2018-10-24 14:11:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:53,252 INFO L225 Difference]: With dead ends: 363472 [2018-10-24 14:11:53,252 INFO L226 Difference]: Without dead ends: 221892 [2018-10-24 14:11:53,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:11:53,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221892 states. [2018-10-24 14:11:59,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221892 to 177686. [2018-10-24 14:11:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177686 states. [2018-10-24 14:11:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177686 states to 177686 states and 183739 transitions. [2018-10-24 14:11:59,981 INFO L78 Accepts]: Start accepts. Automaton has 177686 states and 183739 transitions. Word has length 634 [2018-10-24 14:11:59,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:59,982 INFO L481 AbstractCegarLoop]: Abstraction has 177686 states and 183739 transitions. [2018-10-24 14:11:59,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:11:59,982 INFO L276 IsEmpty]: Start isEmpty. Operand 177686 states and 183739 transitions. [2018-10-24 14:12:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2018-10-24 14:12:00,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:00,038 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:00,039 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:00,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:00,039 INFO L82 PathProgramCache]: Analyzing trace with hash 286282129, now seen corresponding path program 1 times [2018-10-24 14:12:00,040 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:00,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:00,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:00,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:00,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2018-10-24 14:12:01,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:01,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:12:01,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:12:01,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:12:01,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:12:01,380 INFO L87 Difference]: Start difference. First operand 177686 states and 183739 transitions. Second operand 6 states. Received shutdown request... [2018-10-24 14:12:10,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 14:12:10,961 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:12:10,967 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:12:10,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:12:10 BoogieIcfgContainer [2018-10-24 14:12:10,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:12:10,968 INFO L168 Benchmark]: Toolchain (without parser) took 226781.40 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 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 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 14:12:10,969 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:12:10,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2539.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:10,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 807.07 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.5 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. [2018-10-24 14:12:10,972 INFO L168 Benchmark]: Boogie Preprocessor took 640.23 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: 61.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:10,972 INFO L168 Benchmark]: RCFGBuilder took 15969.74 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 221.2 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 76.8 MB). Peak memory consumption was 599.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:10,973 INFO L168 Benchmark]: TraceAbstraction took 206820.16 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -554.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 14:12:10,979 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 2539.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 807.07 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.5 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 640.23 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: 61.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15969.74 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 221.2 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 76.8 MB). Peak memory consumption was 599.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206820.16 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -554.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 78). Cancelled while BasicCegarLoop was constructing difference of abstraction (177686states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (47488 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 206.7s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 179.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9154 SDtfs, 32312 SDslu, 3516 SDs, 0 SdLazy, 67353 SolverSat, 17974 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 148.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 916 GetRequests, 876 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177686occurred 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: 16.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 74447 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 5817 NumberOfCodeBlocks, 5817 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5803 ConstructedInterpolants, 104 QuantifiedInterpolants, 6877962 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1173 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 7050/7233 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown