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/Problem19_label39_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:07:51,106 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:07:51,111 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:07:51,124 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:07:51,124 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:07:51,125 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:07:51,126 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:07:51,128 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:07:51,130 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:07:51,131 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:07:51,132 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:07:51,132 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:07:51,133 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:07:51,134 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:07:51,135 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:07:51,136 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:07:51,136 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:07:51,138 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:07:51,140 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:07:51,142 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:07:51,143 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:07:51,144 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:07:51,147 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:07:51,147 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:07:51,147 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:07:51,148 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:07:51,149 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:07:51,150 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:07:51,151 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:07:51,152 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:07:51,152 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:07:51,153 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 17:07:51,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 17:07:51,153 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 17:07:51,154 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 17:07:51,155 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 17:07:51,156 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 17:07:51,171 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:07:51,172 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:07:51,173 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:07:51,173 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:07:51,174 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:07:51,174 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:07:51,174 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:07:51,175 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:07:51,175 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:07:51,176 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:07:51,176 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:07:51,176 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:07:51,176 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:07:51,176 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:07:51,177 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:07:51,177 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:07:51,177 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:07:51,177 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:07:51,177 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:07:51,178 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:07:51,179 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:07:51,179 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:07:51,179 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:07:51,179 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:07:51,180 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:07:51,180 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:07:51,180 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:07:51,180 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:07:51,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:07:51,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:07:51,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:07:51,268 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:07:51,268 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:07:51,269 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label39_true-unreach-call.c [2018-10-24 17:07:51,334 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6b8670aeb/945b0971ecbf449ea9593e48ad93e745/FLAG3f98918eb [2018-10-24 17:07:52,243 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:07:52,244 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label39_true-unreach-call.c [2018-10-24 17:07:52,288 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6b8670aeb/945b0971ecbf449ea9593e48ad93e745/FLAG3f98918eb [2018-10-24 17:07:52,304 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6b8670aeb/945b0971ecbf449ea9593e48ad93e745 [2018-10-24 17:07:52,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:07:52,317 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:07:52,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:07:52,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:07:52,323 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:07:52,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:07:52" (1/1) ... [2018-10-24 17:07:52,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:52, skipping insertion in model container [2018-10-24 17:07:52,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:07:52" (1/1) ... [2018-10-24 17:07:52,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:07:52,573 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:07:54,640 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:07:54,645 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:07:56,130 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:07:56,201 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:07:56,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56 WrapperNode [2018-10-24 17:07:56,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:07:56,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:07:56,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:07:56,207 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:07:56,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56" (1/1) ... [2018-10-24 17:07:56,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56" (1/1) ... [2018-10-24 17:07:57,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:07:57,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:07:57,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:07:57,446 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:07:57,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56" (1/1) ... [2018-10-24 17:07:57,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56" (1/1) ... [2018-10-24 17:07:57,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56" (1/1) ... [2018-10-24 17:07:57,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56" (1/1) ... [2018-10-24 17:07:57,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56" (1/1) ... [2018-10-24 17:07:57,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56" (1/1) ... [2018-10-24 17:07:58,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56" (1/1) ... [2018-10-24 17:07:58,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:07:58,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:07:58,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:07:58,221 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:07:58,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56" (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 17:07:58,288 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:07:58,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:07:58,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:08:15,603 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:08:15,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:08:15 BoogieIcfgContainer [2018-10-24 17:08:15,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:08:15,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:08:15,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:08:15,609 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:08:15,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:07:52" (1/3) ... [2018-10-24 17:08:15,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75361a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:08:15, skipping insertion in model container [2018-10-24 17:08:15,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:07:56" (2/3) ... [2018-10-24 17:08:15,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75361a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:08:15, skipping insertion in model container [2018-10-24 17:08:15,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:08:15" (3/3) ... [2018-10-24 17:08:15,614 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label39_true-unreach-call.c [2018-10-24 17:08:15,624 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:08:15,641 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:08:15,660 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:08:15,717 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:08:15,718 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:08:15,718 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:08:15,718 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:08:15,718 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:08:15,719 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:08:15,719 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:08:15,719 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:08:15,719 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:08:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:08:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-24 17:08:15,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:15,777 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] [2018-10-24 17:08:15,780 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:15,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:15,786 INFO L82 PathProgramCache]: Analyzing trace with hash 18549650, now seen corresponding path program 1 times [2018-10-24 17:08:15,787 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:15,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:15,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:15,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:15,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:16,272 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:08:16,635 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:08:17,328 WARN L179 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:08:17,517 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 17:08:17,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:08:17,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:08:17,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:08:17,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:08:17,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:08:17,545 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 6 states. [2018-10-24 17:09:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:08,042 INFO L93 Difference]: Finished difference Result 9077 states and 17599 transitions. [2018-10-24 17:09:08,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:09:08,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-10-24 17:09:08,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:08,125 INFO L225 Difference]: With dead ends: 9077 [2018-10-24 17:09:08,126 INFO L226 Difference]: Without dead ends: 7315 [2018-10-24 17:09:08,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:09:08,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7315 states. [2018-10-24 17:09:08,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7315 to 5898. [2018-10-24 17:09:08,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5898 states. [2018-10-24 17:09:08,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5898 states to 5898 states and 8690 transitions. [2018-10-24 17:09:08,395 INFO L78 Accepts]: Start accepts. Automaton has 5898 states and 8690 transitions. Word has length 32 [2018-10-24 17:09:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:08,396 INFO L481 AbstractCegarLoop]: Abstraction has 5898 states and 8690 transitions. [2018-10-24 17:09:08,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:09:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5898 states and 8690 transitions. [2018-10-24 17:09:08,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-24 17:09:08,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:08,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:08,408 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:08,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:08,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1367111019, now seen corresponding path program 1 times [2018-10-24 17:09:08,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:08,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:08,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:08,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:08,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:09:08,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:09:08,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:09:08,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:09:08,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:09:08,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:08,926 INFO L87 Difference]: Start difference. First operand 5898 states and 8690 transitions. Second operand 4 states. [2018-10-24 17:09:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:28,928 INFO L93 Difference]: Finished difference Result 17319 states and 28130 transitions. [2018-10-24 17:09:28,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:28,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 268 [2018-10-24 17:09:28,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:28,985 INFO L225 Difference]: With dead ends: 17319 [2018-10-24 17:09:28,985 INFO L226 Difference]: Without dead ends: 11423 [2018-10-24 17:09:28,997 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 17:09:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11423 states. [2018-10-24 17:09:29,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11423 to 11417. [2018-10-24 17:09:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11417 states. [2018-10-24 17:09:29,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11417 states to 11417 states and 16863 transitions. [2018-10-24 17:09:29,235 INFO L78 Accepts]: Start accepts. Automaton has 11417 states and 16863 transitions. Word has length 268 [2018-10-24 17:09:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:29,237 INFO L481 AbstractCegarLoop]: Abstraction has 11417 states and 16863 transitions. [2018-10-24 17:09:29,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:09:29,238 INFO L276 IsEmpty]: Start isEmpty. Operand 11417 states and 16863 transitions. [2018-10-24 17:09:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-24 17:09:29,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:29,255 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:09:29,255 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:29,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:29,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1696026127, now seen corresponding path program 1 times [2018-10-24 17:09:29,256 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:29,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:29,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:29,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:29,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 59 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:09:29,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:09:29,939 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 17:09:29,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:30,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:09:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:09:30,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:09:30,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 17:09:30,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:09:30,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:09:30,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:09:30,265 INFO L87 Difference]: Start difference. First operand 11417 states and 16863 transitions. Second operand 5 states. [2018-10-24 17:10:04,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:04,829 INFO L93 Difference]: Finished difference Result 45041 states and 66691 transitions. [2018-10-24 17:10:04,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:10:04,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2018-10-24 17:10:04,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:04,929 INFO L225 Difference]: With dead ends: 45041 [2018-10-24 17:10:04,929 INFO L226 Difference]: Without dead ends: 28160 [2018-10-24 17:10:04,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:10:04,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28160 states. [2018-10-24 17:10:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28160 to 28086. [2018-10-24 17:10:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28086 states. [2018-10-24 17:10:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28086 states to 28086 states and 34885 transitions. [2018-10-24 17:10:05,437 INFO L78 Accepts]: Start accepts. Automaton has 28086 states and 34885 transitions. Word has length 336 [2018-10-24 17:10:05,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:05,438 INFO L481 AbstractCegarLoop]: Abstraction has 28086 states and 34885 transitions. [2018-10-24 17:10:05,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:10:05,438 INFO L276 IsEmpty]: Start isEmpty. Operand 28086 states and 34885 transitions. [2018-10-24 17:10:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-10-24 17:10:05,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:05,447 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:05,447 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:05,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:05,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1950389414, now seen corresponding path program 1 times [2018-10-24 17:10:05,448 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:05,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:05,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:05,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:05,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 190 proven. 4 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-24 17:10:06,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:10:06,062 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 17:10:06,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:06,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:10:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-24 17:10:06,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:10:06,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 17:10:06,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:10:06,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:10:06,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:06,343 INFO L87 Difference]: Start difference. First operand 28086 states and 34885 transitions. Second operand 4 states. [2018-10-24 17:10:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:27,031 INFO L93 Difference]: Finished difference Result 108378 states and 135212 transitions. [2018-10-24 17:10:27,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:10:27,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 405 [2018-10-24 17:10:27,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:27,143 INFO L225 Difference]: With dead ends: 108378 [2018-10-24 17:10:27,143 INFO L226 Difference]: Without dead ends: 80294 [2018-10-24 17:10:27,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 405 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 17:10:27,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80294 states. [2018-10-24 17:10:28,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80294 to 52670. [2018-10-24 17:10:28,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52670 states. [2018-10-24 17:10:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52670 states to 52670 states and 64085 transitions. [2018-10-24 17:10:28,209 INFO L78 Accepts]: Start accepts. Automaton has 52670 states and 64085 transitions. Word has length 405 [2018-10-24 17:10:28,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:28,210 INFO L481 AbstractCegarLoop]: Abstraction has 52670 states and 64085 transitions. [2018-10-24 17:10:28,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:10:28,210 INFO L276 IsEmpty]: Start isEmpty. Operand 52670 states and 64085 transitions. [2018-10-24 17:10:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2018-10-24 17:10:28,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:28,231 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:10:28,232 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:28,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:28,232 INFO L82 PathProgramCache]: Analyzing trace with hash 498167117, now seen corresponding path program 1 times [2018-10-24 17:10:28,232 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:28,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:28,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:28,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:28,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:29,435 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-24 17:10:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 516 proven. 4 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2018-10-24 17:10:30,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:10:30,645 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 17:10:30,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:30,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:10:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 520 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2018-10-24 17:10:31,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:10:31,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 17:10:31,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:10:31,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:10:31,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:10:31,257 INFO L87 Difference]: Start difference. First operand 52670 states and 64085 transitions. Second operand 5 states. [2018-10-24 17:10:54,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:54,132 INFO L93 Difference]: Finished difference Result 121733 states and 146055 transitions. [2018-10-24 17:10:54,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:10:54,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 709 [2018-10-24 17:10:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:54,210 INFO L225 Difference]: With dead ends: 121733 [2018-10-24 17:10:54,211 INFO L226 Difference]: Without dead ends: 62224 [2018-10-24 17:10:54,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 709 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:10:54,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62224 states. [2018-10-24 17:10:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62224 to 60856. [2018-10-24 17:10:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60856 states. [2018-10-24 17:10:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60856 states to 60856 states and 68115 transitions. [2018-10-24 17:10:55,419 INFO L78 Accepts]: Start accepts. Automaton has 60856 states and 68115 transitions. Word has length 709 [2018-10-24 17:10:55,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:55,419 INFO L481 AbstractCegarLoop]: Abstraction has 60856 states and 68115 transitions. [2018-10-24 17:10:55,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:10:55,419 INFO L276 IsEmpty]: Start isEmpty. Operand 60856 states and 68115 transitions. [2018-10-24 17:10:55,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2018-10-24 17:10:55,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:55,444 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:10:55,444 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:55,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:55,445 INFO L82 PathProgramCache]: Analyzing trace with hash 85172772, now seen corresponding path program 1 times [2018-10-24 17:10:55,445 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:55,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:55,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:55,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:55,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 59 proven. 72 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-10-24 17:10:56,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:10:56,748 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:10:56,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:56,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:10:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-24 17:10:57,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:10:57,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 17:10:57,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:10:57,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:10:57,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:10:57,378 INFO L87 Difference]: Start difference. First operand 60856 states and 68115 transitions. Second operand 5 states. [2018-10-24 17:11:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:16,825 INFO L93 Difference]: Finished difference Result 155865 states and 175773 transitions. [2018-10-24 17:11:16,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:11:16,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 732 [2018-10-24 17:11:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:16,929 INFO L225 Difference]: With dead ends: 155865 [2018-10-24 17:11:16,929 INFO L226 Difference]: Without dead ends: 95011 [2018-10-24 17:11:16,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 731 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:11:17,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95011 states. [2018-10-24 17:11:17,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95011 to 95005. [2018-10-24 17:11:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95005 states. [2018-10-24 17:11:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95005 states to 95005 states and 104498 transitions. [2018-10-24 17:11:17,882 INFO L78 Accepts]: Start accepts. Automaton has 95005 states and 104498 transitions. Word has length 732 [2018-10-24 17:11:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:17,883 INFO L481 AbstractCegarLoop]: Abstraction has 95005 states and 104498 transitions. [2018-10-24 17:11:17,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:11:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 95005 states and 104498 transitions. [2018-10-24 17:11:17,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2018-10-24 17:11:17,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:17,917 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:11:17,917 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:17,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:17,918 INFO L82 PathProgramCache]: Analyzing trace with hash 902544536, now seen corresponding path program 1 times [2018-10-24 17:11:17,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:17,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:17,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:17,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:17,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:11:19,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:11:19,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:11:19,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:11:19,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:11:19,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:11:19,333 INFO L87 Difference]: Start difference. First operand 95005 states and 104498 transitions. Second operand 4 states. [2018-10-24 17:11:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:33,470 INFO L93 Difference]: Finished difference Result 190008 states and 208997 transitions. [2018-10-24 17:11:33,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:11:33,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 887 [2018-10-24 17:11:33,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:33,599 INFO L225 Difference]: With dead ends: 190008 [2018-10-24 17:11:33,600 INFO L226 Difference]: Without dead ends: 95005 [2018-10-24 17:11:33,649 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 17:11:33,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95005 states. [2018-10-24 17:11:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95005 to 88167. [2018-10-24 17:11:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88167 states. [2018-10-24 17:11:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88167 states to 88167 states and 94225 transitions. [2018-10-24 17:11:34,615 INFO L78 Accepts]: Start accepts. Automaton has 88167 states and 94225 transitions. Word has length 887 [2018-10-24 17:11:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:34,616 INFO L481 AbstractCegarLoop]: Abstraction has 88167 states and 94225 transitions. [2018-10-24 17:11:34,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:11:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 88167 states and 94225 transitions. [2018-10-24 17:11:34,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2018-10-24 17:11:34,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:34,630 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:11:34,631 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:34,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:34,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2106636785, now seen corresponding path program 1 times [2018-10-24 17:11:34,631 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:34,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:34,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:34,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:34,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:11:36,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:11:36,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:11:36,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:11:36,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:11:36,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:11:36,024 INFO L87 Difference]: Start difference. First operand 88167 states and 94225 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 17:11:49,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:11:49,426 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:11:49,433 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:11:49,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:11:49 BoogieIcfgContainer [2018-10-24 17:11:49,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:11:49,434 INFO L168 Benchmark]: Toolchain (without parser) took 237118.23 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -295.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 17:11:49,436 INFO L168 Benchmark]: CDTParser took 0.25 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 17:11:49,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3884.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 991.8 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:11:49,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 1241.89 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.7 MB). Free memory was 991.8 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:11:49,438 INFO L168 Benchmark]: Boogie Preprocessor took 775.10 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 106.1 MB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:11:49,439 INFO L168 Benchmark]: RCFGBuilder took 17383.29 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 295.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 474.1 MB). Peak memory consumption was 769.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:11:49,440 INFO L168 Benchmark]: TraceAbstraction took 213828.33 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -155.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 17:11:49,446 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 3884.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 991.8 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1241.89 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.7 MB). Free memory was 991.8 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 775.10 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 106.1 MB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17383.29 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 295.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 474.1 MB). Peak memory consumption was 769.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213828.33 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -155.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). Cancelled while BasicCegarLoop was constructing difference of abstraction (88167states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (137852 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 213.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 196.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11684 SDtfs, 39593 SDslu, 3479 SDs, 0 SdLazy, 87043 SolverSat, 19821 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 167.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2218 GetRequests, 2189 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95005occurred in iteration=6, 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: 5.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 37333 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 6471 NumberOfCodeBlocks, 6471 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 6459 ConstructedInterpolants, 0 QuantifiedInterpolants, 11605210 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2599 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 3876/4021 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown