java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:13:30,153 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:13:30,155 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:13:30,168 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:13:30,168 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:13:30,169 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:13:30,171 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:13:30,172 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:13:30,174 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:13:30,175 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:13:30,176 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:13:30,176 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:13:30,177 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:13:30,178 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:13:30,180 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:13:30,180 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:13:30,181 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:13:30,183 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:13:30,185 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:13:30,187 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:13:30,188 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:13:30,189 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:13:30,192 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:13:30,192 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:13:30,192 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:13:30,193 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:13:30,195 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:13:30,195 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:13:30,196 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:13:30,197 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:13:30,198 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:13:30,198 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:13:30,199 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:13:30,199 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:13:30,200 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:13:30,201 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:13:30,201 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:13:30,216 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:13:30,217 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:13:30,217 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:13:30,218 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:13:30,218 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:13:30,218 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:13:30,219 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:13:30,219 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:13:30,219 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:13:30,219 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:13:30,220 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:13:30,220 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:13:30,220 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:13:30,220 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:13:30,220 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:13:30,221 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:13:30,221 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:13:30,221 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:13:30,221 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:13:30,221 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:13:30,222 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:13:30,222 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:13:30,222 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:13:30,222 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:13:30,224 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:13:30,224 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:13:30,224 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:13:30,224 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:13:30,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:13:30,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:13:30,312 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:13:30,313 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:13:30,313 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:13:30,314 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label24_true-unreach-call.c [2018-10-24 16:13:30,372 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe800e93a/524668dfddc5431eabfe2e60fce0f928/FLAGf872c44a1 [2018-10-24 16:13:31,123 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:13:31,124 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label24_true-unreach-call.c [2018-10-24 16:13:31,161 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe800e93a/524668dfddc5431eabfe2e60fce0f928/FLAGf872c44a1 [2018-10-24 16:13:31,184 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe800e93a/524668dfddc5431eabfe2e60fce0f928 [2018-10-24 16:13:31,196 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:13:31,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:13:31,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:13:31,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:13:31,206 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:13:31,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:13:31" (1/1) ... [2018-10-24 16:13:31,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef6c47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:31, skipping insertion in model container [2018-10-24 16:13:31,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:13:31" (1/1) ... [2018-10-24 16:13:31,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:13:31,378 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:13:32,710 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:13:32,716 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:13:33,345 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:13:33,381 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:13:33,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33 WrapperNode [2018-10-24 16:13:33,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:13:33,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:13:33,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:13:33,386 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:13:33,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33" (1/1) ... [2018-10-24 16:13:33,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33" (1/1) ... [2018-10-24 16:13:34,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:13:34,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:13:34,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:13:34,051 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:13:34,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33" (1/1) ... [2018-10-24 16:13:34,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33" (1/1) ... [2018-10-24 16:13:34,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33" (1/1) ... [2018-10-24 16:13:34,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33" (1/1) ... [2018-10-24 16:13:34,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33" (1/1) ... [2018-10-24 16:13:34,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33" (1/1) ... [2018-10-24 16:13:34,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33" (1/1) ... [2018-10-24 16:13:34,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:13:34,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:13:34,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:13:34,517 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:13:34,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:13:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:13:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:13:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:13:43,630 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:13:43,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:13:43 BoogieIcfgContainer [2018-10-24 16:13:43,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:13:43,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:13:43,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:13:43,636 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:13:43,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:13:31" (1/3) ... [2018-10-24 16:13:43,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679ffa94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:13:43, skipping insertion in model container [2018-10-24 16:13:43,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:33" (2/3) ... [2018-10-24 16:13:43,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679ffa94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:13:43, skipping insertion in model container [2018-10-24 16:13:43,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:13:43" (3/3) ... [2018-10-24 16:13:43,640 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label24_true-unreach-call.c [2018-10-24 16:13:43,648 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:13:43,658 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:13:43,673 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:13:43,716 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:13:43,716 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:13:43,717 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:13:43,717 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:13:43,717 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:13:43,717 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:13:43,717 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:13:43,717 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:13:43,717 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:13:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 16:13:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-24 16:13:43,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:43,762 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:43,764 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:43,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:43,770 INFO L82 PathProgramCache]: Analyzing trace with hash 84973194, now seen corresponding path program 1 times [2018-10-24 16:13:43,772 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:43,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:43,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:43,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:43,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:44,236 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 16:13:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:13:44,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:44,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:13:44,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:13:44,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:13:44,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:44,274 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 16:14:01,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:01,283 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-24 16:14:01,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:14:01,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-10-24 16:14:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:01,331 INFO L225 Difference]: With dead ends: 3146 [2018-10-24 16:14:01,331 INFO L226 Difference]: Without dead ends: 2320 [2018-10-24 16:14:01,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:01,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-24 16:14:01,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-24 16:14:01,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-24 16:14:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-10-24 16:14:01,508 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 47 [2018-10-24 16:14:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:01,509 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-10-24 16:14:01,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:14:01,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-10-24 16:14:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 16:14:01,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:01,516 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:14:01,516 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:01,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:01,517 INFO L82 PathProgramCache]: Analyzing trace with hash -936824486, now seen corresponding path program 1 times [2018-10-24 16:14:01,517 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:01,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:01,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:01,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:01,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:14:01,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:14:01,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:14:01,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:14:01,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:14:01,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:01,793 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 4 states. [2018-10-24 16:14:13,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:13,574 INFO L93 Difference]: Finished difference Result 9150 states and 15304 transitions. [2018-10-24 16:14:13,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:14:13,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2018-10-24 16:14:13,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:13,614 INFO L225 Difference]: With dead ends: 9150 [2018-10-24 16:14:13,615 INFO L226 Difference]: Without dead ends: 6832 [2018-10-24 16:14:13,620 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 16:14:13,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-24 16:14:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-24 16:14:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-24 16:14:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 9936 transitions. [2018-10-24 16:14:13,751 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 9936 transitions. Word has length 119 [2018-10-24 16:14:13,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:13,752 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 9936 transitions. [2018-10-24 16:14:13,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:14:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 9936 transitions. [2018-10-24 16:14:13,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 16:14:13,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:13,759 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:14:13,759 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:13,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:13,759 INFO L82 PathProgramCache]: Analyzing trace with hash -320161239, now seen corresponding path program 1 times [2018-10-24 16:14:13,760 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:13,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:13,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:13,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:13,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:14,126 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 16:14:14,552 WARN L179 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2018-10-24 16:14:15,185 WARN L179 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-24 16:14:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:14:15,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:14:15,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:14:15,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:14:15,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:14:15,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:14:15,447 INFO L87 Difference]: Start difference. First operand 6832 states and 9936 transitions. Second operand 6 states. [2018-10-24 16:14:15,631 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-24 16:14:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:28,331 INFO L93 Difference]: Finished difference Result 21934 states and 31609 transitions. [2018-10-24 16:14:28,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:14:28,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 16:14:28,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:28,402 INFO L225 Difference]: With dead ends: 21934 [2018-10-24 16:14:28,403 INFO L226 Difference]: Without dead ends: 15104 [2018-10-24 16:14:28,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:14:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15104 states. [2018-10-24 16:14:28,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15104 to 15104. [2018-10-24 16:14:28,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15104 states. [2018-10-24 16:14:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15104 states to 15104 states and 21135 transitions. [2018-10-24 16:14:28,668 INFO L78 Accepts]: Start accepts. Automaton has 15104 states and 21135 transitions. Word has length 125 [2018-10-24 16:14:28,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:28,668 INFO L481 AbstractCegarLoop]: Abstraction has 15104 states and 21135 transitions. [2018-10-24 16:14:28,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:14:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 15104 states and 21135 transitions. [2018-10-24 16:14:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-24 16:14:28,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:28,676 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:14:28,676 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:28,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash 257272057, now seen corresponding path program 1 times [2018-10-24 16:14:28,677 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:28,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:28,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:28,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:28,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:29,135 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 16:14:29,320 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-24 16:14:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 145 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-24 16:14:29,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:14:29,418 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:14:29,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:29,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:14:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:14:29,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:14:29,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:14:29,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:14:29,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:14:29,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:14:29,947 INFO L87 Difference]: Start difference. First operand 15104 states and 21135 transitions. Second operand 7 states. [2018-10-24 16:14:53,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:53,531 INFO L93 Difference]: Finished difference Result 79868 states and 112723 transitions. [2018-10-24 16:14:53,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:14:53,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2018-10-24 16:14:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:53,669 INFO L225 Difference]: With dead ends: 79868 [2018-10-24 16:14:53,670 INFO L226 Difference]: Without dead ends: 63259 [2018-10-24 16:14:53,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:14:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63259 states. [2018-10-24 16:14:54,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63259 to 40671. [2018-10-24 16:14:54,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40671 states. [2018-10-24 16:14:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40671 states to 40671 states and 48760 transitions. [2018-10-24 16:14:55,069 INFO L78 Accepts]: Start accepts. Automaton has 40671 states and 48760 transitions. Word has length 197 [2018-10-24 16:14:55,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:55,070 INFO L481 AbstractCegarLoop]: Abstraction has 40671 states and 48760 transitions. [2018-10-24 16:14:55,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:14:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand 40671 states and 48760 transitions. [2018-10-24 16:14:55,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-24 16:14:55,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:55,083 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:14:55,084 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:55,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:55,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2127600608, now seen corresponding path program 1 times [2018-10-24 16:14:55,085 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:55,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:55,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:55,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:55,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:55,546 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 16:14:56,065 WARN L179 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-24 16:14:56,629 WARN L179 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2018-10-24 16:14:56,800 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 4 [2018-10-24 16:14:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 236 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-10-24 16:14:57,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:14:57,208 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:14:57,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:57,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:14:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-24 16:14:57,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:14:57,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:14:57,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:14:57,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:14:57,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:14:57,605 INFO L87 Difference]: Start difference. First operand 40671 states and 48760 transitions. Second operand 7 states. [2018-10-24 16:14:57,793 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:15:14,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:14,256 INFO L93 Difference]: Finished difference Result 92621 states and 110572 transitions. [2018-10-24 16:15:14,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:15:14,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2018-10-24 16:15:14,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:14,330 INFO L225 Difference]: With dead ends: 92621 [2018-10-24 16:15:14,331 INFO L226 Difference]: Without dead ends: 51951 [2018-10-24 16:15:14,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 371 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:15:14,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51951 states. [2018-10-24 16:15:15,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51951 to 51951. [2018-10-24 16:15:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51951 states. [2018-10-24 16:15:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51951 states to 51951 states and 56873 transitions. [2018-10-24 16:15:15,120 INFO L78 Accepts]: Start accepts. Automaton has 51951 states and 56873 transitions. Word has length 368 [2018-10-24 16:15:15,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:15,121 INFO L481 AbstractCegarLoop]: Abstraction has 51951 states and 56873 transitions. [2018-10-24 16:15:15,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:15:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 51951 states and 56873 transitions. [2018-10-24 16:15:15,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-10-24 16:15:15,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:15,141 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:15:15,141 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:15,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:15,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1870176737, now seen corresponding path program 1 times [2018-10-24 16:15:15,142 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:15,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:15,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:15,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:15,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 16:15:15,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:15,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:15:15,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:15:15,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:15:15,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:15:15,739 INFO L87 Difference]: Start difference. First operand 51951 states and 56873 transitions. Second operand 4 states. [2018-10-24 16:15:28,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:28,057 INFO L93 Difference]: Finished difference Result 110668 states and 121778 transitions. [2018-10-24 16:15:28,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:15:28,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 406 [2018-10-24 16:15:28,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:28,170 INFO L225 Difference]: With dead ends: 110668 [2018-10-24 16:15:28,171 INFO L226 Difference]: Without dead ends: 59471 [2018-10-24 16:15:28,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:15:28,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59471 states. [2018-10-24 16:15:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59471 to 57967. [2018-10-24 16:15:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57967 states. [2018-10-24 16:15:28,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57967 states to 57967 states and 62925 transitions. [2018-10-24 16:15:28,876 INFO L78 Accepts]: Start accepts. Automaton has 57967 states and 62925 transitions. Word has length 406 [2018-10-24 16:15:28,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:28,877 INFO L481 AbstractCegarLoop]: Abstraction has 57967 states and 62925 transitions. [2018-10-24 16:15:28,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:15:28,878 INFO L276 IsEmpty]: Start isEmpty. Operand 57967 states and 62925 transitions. [2018-10-24 16:15:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-10-24 16:15:28,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:28,905 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:15:28,905 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:28,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:28,906 INFO L82 PathProgramCache]: Analyzing trace with hash -65666149, now seen corresponding path program 1 times [2018-10-24 16:15:28,906 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:28,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:28,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:28,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:28,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:29,376 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 16:15:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-24 16:15:29,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:29,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:15:29,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:15:29,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:15:29,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:15:29,469 INFO L87 Difference]: Start difference. First operand 57967 states and 62925 transitions. Second operand 4 states. [2018-10-24 16:15:36,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:36,999 INFO L93 Difference]: Finished difference Result 137740 states and 149642 transitions. [2018-10-24 16:15:36,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:15:36,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 481 [2018-10-24 16:15:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:37,093 INFO L225 Difference]: With dead ends: 137740 [2018-10-24 16:15:37,093 INFO L226 Difference]: Without dead ends: 80527 [2018-10-24 16:15:37,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:15:37,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80527 states. [2018-10-24 16:15:37,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80527 to 79023. [2018-10-24 16:15:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79023 states. [2018-10-24 16:15:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79023 states to 79023 states and 85399 transitions. [2018-10-24 16:15:37,955 INFO L78 Accepts]: Start accepts. Automaton has 79023 states and 85399 transitions. Word has length 481 [2018-10-24 16:15:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:37,956 INFO L481 AbstractCegarLoop]: Abstraction has 79023 states and 85399 transitions. [2018-10-24 16:15:37,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:15:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 79023 states and 85399 transitions. [2018-10-24 16:15:37,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2018-10-24 16:15:37,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:37,985 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-10-24 16:15:37,985 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:37,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:37,985 INFO L82 PathProgramCache]: Analyzing trace with hash -294675675, now seen corresponding path program 1 times [2018-10-24 16:15:37,985 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:37,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:37,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:37,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:37,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 16:15:38,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:38,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:15:38,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:15:38,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:15:38,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:15:38,781 INFO L87 Difference]: Start difference. First operand 79023 states and 85399 transitions. Second operand 5 states. [2018-10-24 16:15:49,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:49,527 INFO L93 Difference]: Finished difference Result 228772 states and 247688 transitions. [2018-10-24 16:15:49,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:15:49,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 485 [2018-10-24 16:15:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:49,719 INFO L225 Difference]: With dead ends: 228772 [2018-10-24 16:15:49,719 INFO L226 Difference]: Without dead ends: 150503 [2018-10-24 16:15:49,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:15:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150503 states. [2018-10-24 16:15:51,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150503 to 125687. [2018-10-24 16:15:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125687 states. [2018-10-24 16:15:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125687 states to 125687 states and 133649 transitions. [2018-10-24 16:15:51,185 INFO L78 Accepts]: Start accepts. Automaton has 125687 states and 133649 transitions. Word has length 485 [2018-10-24 16:15:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:51,186 INFO L481 AbstractCegarLoop]: Abstraction has 125687 states and 133649 transitions. [2018-10-24 16:15:51,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:15:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 125687 states and 133649 transitions. [2018-10-24 16:15:51,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2018-10-24 16:15:51,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:51,344 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:15:51,345 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:51,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:51,345 INFO L82 PathProgramCache]: Analyzing trace with hash -406535854, now seen corresponding path program 1 times [2018-10-24 16:15:51,345 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:51,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:51,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:51,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:51,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 16:15:53,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:53,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:15:53,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:15:53,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:15:53,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:15:53,483 INFO L87 Difference]: Start difference. First operand 125687 states and 133649 transitions. Second operand 4 states. [2018-10-24 16:16:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:16:00,470 INFO L93 Difference]: Finished difference Result 246097 states and 261970 transitions. [2018-10-24 16:16:00,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:16:00,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1005 [2018-10-24 16:16:00,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:16:01,206 INFO L225 Difference]: With dead ends: 246097 [2018-10-24 16:16:01,207 INFO L226 Difference]: Without dead ends: 104574 [2018-10-24 16:16:01,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104574 states. [2018-10-24 16:16:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104574 to 94798. [2018-10-24 16:16:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94798 states. [2018-10-24 16:16:02,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94798 states to 94798 states and 99342 transitions. [2018-10-24 16:16:02,129 INFO L78 Accepts]: Start accepts. Automaton has 94798 states and 99342 transitions. Word has length 1005 [2018-10-24 16:16:02,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:16:02,131 INFO L481 AbstractCegarLoop]: Abstraction has 94798 states and 99342 transitions. [2018-10-24 16:16:02,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:16:02,131 INFO L276 IsEmpty]: Start isEmpty. Operand 94798 states and 99342 transitions. [2018-10-24 16:16:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2018-10-24 16:16:02,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:02,209 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:16:02,209 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:02,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:02,210 INFO L82 PathProgramCache]: Analyzing trace with hash -68173860, now seen corresponding path program 1 times [2018-10-24 16:16:02,211 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:02,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:02,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:02,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:02,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-10-24 16:16:03,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:16:03,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:16:03,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:16:03,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:16:03,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:16:03,774 INFO L87 Difference]: Start difference. First operand 94798 states and 99342 transitions. Second operand 3 states. [2018-10-24 16:16:09,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:16:09,279 INFO L93 Difference]: Finished difference Result 238474 states and 250460 transitions. [2018-10-24 16:16:09,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:16:09,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1034 [2018-10-24 16:16:09,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:16:09,430 INFO L225 Difference]: With dead ends: 238474 [2018-10-24 16:16:09,430 INFO L226 Difference]: Without dead ends: 143677 [2018-10-24 16:16:09,488 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 16:16:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143677 states. [2018-10-24 16:16:10,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143677 to 132397. [2018-10-24 16:16:10,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132397 states. [2018-10-24 16:16:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132397 states to 132397 states and 137869 transitions. [2018-10-24 16:16:10,705 INFO L78 Accepts]: Start accepts. Automaton has 132397 states and 137869 transitions. Word has length 1034 [2018-10-24 16:16:10,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:16:10,705 INFO L481 AbstractCegarLoop]: Abstraction has 132397 states and 137869 transitions. [2018-10-24 16:16:10,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:16:10,705 INFO L276 IsEmpty]: Start isEmpty. Operand 132397 states and 137869 transitions. [2018-10-24 16:16:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2018-10-24 16:16:11,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:11,419 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:16:11,419 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:11,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:11,420 INFO L82 PathProgramCache]: Analyzing trace with hash -688117906, now seen corresponding path program 1 times [2018-10-24 16:16:11,420 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:11,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:11,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:11,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:11,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-10-24 16:16:12,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:16:12,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:16:12,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:16:12,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:16:12,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:12,369 INFO L87 Difference]: Start difference. First operand 132397 states and 137869 transitions. Second operand 4 states. [2018-10-24 16:16:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:16:20,433 INFO L93 Difference]: Finished difference Result 296376 states and 308510 transitions. [2018-10-24 16:16:20,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:16:20,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1042 [2018-10-24 16:16:20,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:16:20,633 INFO L225 Difference]: With dead ends: 296376 [2018-10-24 16:16:20,633 INFO L226 Difference]: Without dead ends: 164733 [2018-10-24 16:16:20,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:20,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164733 states. [2018-10-24 16:16:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164733 to 148189. [2018-10-24 16:16:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148189 states. [2018-10-24 16:16:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148189 states to 148189 states and 153748 transitions. [2018-10-24 16:16:22,078 INFO L78 Accepts]: Start accepts. Automaton has 148189 states and 153748 transitions. Word has length 1042 [2018-10-24 16:16:22,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:16:22,078 INFO L481 AbstractCegarLoop]: Abstraction has 148189 states and 153748 transitions. [2018-10-24 16:16:22,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:16:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 148189 states and 153748 transitions. [2018-10-24 16:16:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1173 [2018-10-24 16:16:22,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:22,732 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:16:22,733 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:22,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:22,734 INFO L82 PathProgramCache]: Analyzing trace with hash -812773691, now seen corresponding path program 1 times [2018-10-24 16:16:22,734 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:22,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:22,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:22,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:22,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:23,943 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 16:16:24,442 WARN L179 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2018-10-24 16:16:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 679 proven. 45 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-10-24 16:16:29,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:16:29,122 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:16:29,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:29,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:16:29,826 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 16 [2018-10-24 16:16:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 679 proven. 45 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-10-24 16:16:31,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:16:31,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4] total 14 [2018-10-24 16:16:31,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 16:16:31,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 16:16:31,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-10-24 16:16:31,291 INFO L87 Difference]: Start difference. First operand 148189 states and 153748 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 16:17:16,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-24 16:17:16,173 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:17:16,179 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:17:16,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:17:16 BoogieIcfgContainer [2018-10-24 16:17:16,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:17:16,180 INFO L168 Benchmark]: Toolchain (without parser) took 224983.72 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 276.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 16:17:16,181 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:17:16,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2181.47 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:17:16,182 INFO L168 Benchmark]: Boogie Procedure Inliner took 667.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -947.8 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:17:16,183 INFO L168 Benchmark]: Boogie Preprocessor took 466.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:17:16,185 INFO L168 Benchmark]: RCFGBuilder took 9114.09 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 245.4 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -208.3 MB). Peak memory consumption was 657.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:17:16,186 INFO L168 Benchmark]: TraceAbstraction took 212547.08 ms. Allocated memory was 2.5 GB in the beginning and 3.2 GB in the end (delta: 660.6 MB). Free memory was 2.3 GB in the beginning and 1.1 GB in the end (delta: 1.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 16:17:16,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2181.47 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 667.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -947.8 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 466.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9114.09 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 245.4 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -208.3 MB). Peak memory consumption was 657.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212547.08 ms. Allocated memory was 2.5 GB in the beginning and 3.2 GB in the end (delta: 660.6 MB). Free memory was 2.3 GB in the beginning and 1.1 GB in the end (delta: 1.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was constructing difference of abstraction (148189states) and FLOYD_HOARE automaton (currently 33 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (179691 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 212.4s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 180.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7987 SDtfs, 35426 SDslu, 1636 SDs, 0 SdLazy, 95007 SolverSat, 13350 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 149.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1857 GetRequests, 1769 SyntacticMatches, 17 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148189occurred 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: 9.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 88012 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 8218 NumberOfCodeBlocks, 8218 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 8203 ConstructedInterpolants, 47 QuantifiedInterpolants, 31759287 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2137 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 7703/7806 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown