java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:43:59,182 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:43:59,185 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:43:59,197 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:43:59,197 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:43:59,198 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:43:59,200 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:43:59,201 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:43:59,203 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:43:59,204 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:43:59,205 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:43:59,205 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:43:59,206 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:43:59,207 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:43:59,208 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:43:59,209 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:43:59,210 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:43:59,212 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:43:59,214 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:43:59,215 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:43:59,216 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:43:59,219 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:43:59,223 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:43:59,223 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:43:59,223 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:43:59,225 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:43:59,228 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:43:59,229 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:43:59,230 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:43:59,233 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:43:59,233 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:43:59,234 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 19:43:59,234 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 19:43:59,234 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 19:43:59,235 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 19:43:59,238 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 19:43:59,238 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:43:59,266 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:43:59,266 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:43:59,267 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:43:59,267 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:43:59,268 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:43:59,268 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:43:59,268 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:43:59,268 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:43:59,268 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:43:59,269 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:43:59,269 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:43:59,269 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:43:59,269 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:43:59,269 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:43:59,269 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:43:59,270 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:43:59,270 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:43:59,270 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:43:59,270 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:43:59,270 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:43:59,271 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:43:59,271 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:43:59,271 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:43:59,271 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:43:59,271 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:43:59,271 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:43:59,272 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:43:59,272 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:43:59,315 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:43:59,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:43:59,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:43:59,337 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:43:59,338 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:43:59,339 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label31_false-unreach-call.c [2018-11-06 19:43:59,409 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94aadc195/ea9e6ee9c8594153b7e876d51c0dcf2f/FLAG84cfcb89e [2018-11-06 19:44:00,292 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:44:00,293 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label31_false-unreach-call.c [2018-11-06 19:44:00,343 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94aadc195/ea9e6ee9c8594153b7e876d51c0dcf2f/FLAG84cfcb89e [2018-11-06 19:44:00,360 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94aadc195/ea9e6ee9c8594153b7e876d51c0dcf2f [2018-11-06 19:44:00,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:44:00,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:44:00,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:44:00,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:44:00,380 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:44:00,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:44:00" (1/1) ... [2018-11-06 19:44:00,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fab143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:00, skipping insertion in model container [2018-11-06 19:44:00,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:44:00" (1/1) ... [2018-11-06 19:44:00,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:44:00,663 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:44:02,928 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:44:02,940 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:44:04,109 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:44:04,168 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:44:04,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04 WrapperNode [2018-11-06 19:44:04,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:44:04,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:44:04,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:44:04,171 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:44:04,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04" (1/1) ... [2018-11-06 19:44:04,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04" (1/1) ... [2018-11-06 19:44:05,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:44:05,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:44:05,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:44:05,186 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:44:05,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04" (1/1) ... [2018-11-06 19:44:05,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04" (1/1) ... [2018-11-06 19:44:05,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04" (1/1) ... [2018-11-06 19:44:05,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04" (1/1) ... [2018-11-06 19:44:05,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04" (1/1) ... [2018-11-06 19:44:05,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04" (1/1) ... [2018-11-06 19:44:05,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04" (1/1) ... [2018-11-06 19:44:05,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:44:05,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:44:05,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:44:05,953 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:44:05,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:44:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:44:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:44:06,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:44:21,561 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:44:21,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:44:21 BoogieIcfgContainer [2018-11-06 19:44:21,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:44:21,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:44:21,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:44:21,566 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:44:21,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:44:00" (1/3) ... [2018-11-06 19:44:21,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94d9f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:44:21, skipping insertion in model container [2018-11-06 19:44:21,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:04" (2/3) ... [2018-11-06 19:44:21,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94d9f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:44:21, skipping insertion in model container [2018-11-06 19:44:21,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:44:21" (3/3) ... [2018-11-06 19:44:21,570 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label31_false-unreach-call.c [2018-11-06 19:44:21,580 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:44:21,591 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:44:21,609 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:44:21,662 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:44:21,662 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:44:21,663 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:44:21,663 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:44:21,663 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:44:21,663 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:44:21,663 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:44:21,663 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:44:21,663 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:44:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 19:44:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-06 19:44:21,732 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:44:21,733 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:44:21,735 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:44:21,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:44:21,742 INFO L82 PathProgramCache]: Analyzing trace with hash -686802918, now seen corresponding path program 1 times [2018-11-06 19:44:21,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:44:21,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:44:21,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:21,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:44:21,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:44:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:44:22,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:44:22,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:44:22,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:44:22,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:44:22,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:44:22,127 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 19:44:43,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:44:43,312 INFO L93 Difference]: Finished difference Result 6406 states and 12224 transitions. [2018-11-06 19:44:43,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:44:43,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-11-06 19:44:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:44:43,369 INFO L225 Difference]: With dead ends: 6406 [2018-11-06 19:44:43,369 INFO L226 Difference]: Without dead ends: 4650 [2018-11-06 19:44:43,380 INFO L604 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 [2018-11-06 19:44:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4650 states. [2018-11-06 19:44:43,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4650 to 4611. [2018-11-06 19:44:43,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4611 states. [2018-11-06 19:44:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4611 states to 4611 states and 7301 transitions. [2018-11-06 19:44:43,580 INFO L78 Accepts]: Start accepts. Automaton has 4611 states and 7301 transitions. Word has length 19 [2018-11-06 19:44:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:44:43,581 INFO L480 AbstractCegarLoop]: Abstraction has 4611 states and 7301 transitions. [2018-11-06 19:44:43,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:44:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4611 states and 7301 transitions. [2018-11-06 19:44:43,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-06 19:44:43,586 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:44:43,586 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:44:43,587 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:44:43,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:44:43,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1965316011, now seen corresponding path program 1 times [2018-11-06 19:44:43,587 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:44:43,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:44:43,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:43,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:44:43,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:44:43,961 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 19:44:44,322 WARN L179 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-11-06 19:44:44,955 WARN L179 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-11-06 19:44:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:44:45,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:44:45,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:44:45,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:44:45,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:44:45,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:44:45,042 INFO L87 Difference]: Start difference. First operand 4611 states and 7301 transitions. Second operand 6 states. [2018-11-06 19:45:16,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:45:16,983 INFO L93 Difference]: Finished difference Result 20180 states and 30824 transitions. [2018-11-06 19:45:16,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:45:16,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2018-11-06 19:45:16,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:45:17,059 INFO L225 Difference]: With dead ends: 20180 [2018-11-06 19:45:17,059 INFO L226 Difference]: Without dead ends: 15571 [2018-11-06 19:45:17,069 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:45:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15571 states. [2018-11-06 19:45:17,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15571 to 14198. [2018-11-06 19:45:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14198 states. [2018-11-06 19:45:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14198 states to 14198 states and 18990 transitions. [2018-11-06 19:45:17,352 INFO L78 Accepts]: Start accepts. Automaton has 14198 states and 18990 transitions. Word has length 87 [2018-11-06 19:45:17,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:45:17,353 INFO L480 AbstractCegarLoop]: Abstraction has 14198 states and 18990 transitions. [2018-11-06 19:45:17,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:45:17,353 INFO L276 IsEmpty]: Start isEmpty. Operand 14198 states and 18990 transitions. [2018-11-06 19:45:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-11-06 19:45:17,374 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:45:17,374 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:45:17,379 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:45:17,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:45:17,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1203557397, now seen corresponding path program 1 times [2018-11-06 19:45:17,380 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:45:17,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:45:17,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:17,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:17,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:18,330 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2018-11-06 19:45:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-06 19:45:18,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:45:18,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:45:18,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:45:18,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:45:18,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:45:18,586 INFO L87 Difference]: Start difference. First operand 14198 states and 18990 transitions. Second operand 7 states. [2018-11-06 19:45:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:45:50,877 INFO L93 Difference]: Finished difference Result 42065 states and 56298 transitions. [2018-11-06 19:45:50,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:45:50,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2018-11-06 19:45:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:45:50,981 INFO L225 Difference]: With dead ends: 42065 [2018-11-06 19:45:50,981 INFO L226 Difference]: Without dead ends: 27869 [2018-11-06 19:45:50,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:45:51,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27869 states. [2018-11-06 19:45:51,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27869 to 25134. [2018-11-06 19:45:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25134 states. [2018-11-06 19:45:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25134 states to 25134 states and 30401 transitions. [2018-11-06 19:45:51,424 INFO L78 Accepts]: Start accepts. Automaton has 25134 states and 30401 transitions. Word has length 295 [2018-11-06 19:45:51,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:45:51,424 INFO L480 AbstractCegarLoop]: Abstraction has 25134 states and 30401 transitions. [2018-11-06 19:45:51,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:45:51,425 INFO L276 IsEmpty]: Start isEmpty. Operand 25134 states and 30401 transitions. [2018-11-06 19:45:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-11-06 19:45:51,433 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:45:51,434 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:45:51,434 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:45:51,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:45:51,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1666214981, now seen corresponding path program 1 times [2018-11-06 19:45:51,436 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:45:51,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:45:51,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:51,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:51,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:45:51,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:45:51,915 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:45:51,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:52,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:45:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:45:52,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:45:52,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 19:45:52,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:45:52,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:45:52,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:45:52,218 INFO L87 Difference]: Start difference. First operand 25134 states and 30401 transitions. Second operand 5 states. [2018-11-06 19:46:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:46:24,280 INFO L93 Difference]: Finished difference Result 114900 states and 149450 transitions. [2018-11-06 19:46:24,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:46:24,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2018-11-06 19:46:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:46:24,521 INFO L225 Difference]: With dead ends: 114900 [2018-11-06 19:46:24,521 INFO L226 Difference]: Without dead ends: 80202 [2018-11-06 19:46:24,563 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:46:24,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80202 states. [2018-11-06 19:46:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80202 to 80104. [2018-11-06 19:46:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80104 states. [2018-11-06 19:46:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80104 states to 80104 states and 93292 transitions. [2018-11-06 19:46:25,733 INFO L78 Accepts]: Start accepts. Automaton has 80104 states and 93292 transitions. Word has length 323 [2018-11-06 19:46:25,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:25,734 INFO L480 AbstractCegarLoop]: Abstraction has 80104 states and 93292 transitions. [2018-11-06 19:46:25,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:46:25,734 INFO L276 IsEmpty]: Start isEmpty. Operand 80104 states and 93292 transitions. [2018-11-06 19:46:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-11-06 19:46:25,739 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:25,739 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:46:25,740 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:25,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:25,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1919634883, now seen corresponding path program 1 times [2018-11-06 19:46:25,740 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:25,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:25,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:25,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:25,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-06 19:46:26,233 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:46:26,233 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:46:26,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:26,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:46:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:46:26,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:46:26,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 19:46:26,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:46:26,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:46:26,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:46:26,456 INFO L87 Difference]: Start difference. First operand 80104 states and 93292 transitions. Second operand 4 states. [2018-11-06 19:46:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:46:44,803 INFO L93 Difference]: Finished difference Result 286225 states and 337230 transitions. [2018-11-06 19:46:44,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:46:44,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2018-11-06 19:46:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:46:45,091 INFO L225 Difference]: With dead ends: 286225 [2018-11-06 19:46:45,092 INFO L226 Difference]: Without dead ends: 207489 [2018-11-06 19:46:45,172 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:46:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207489 states. [2018-11-06 19:46:47,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207489 to 133370. [2018-11-06 19:46:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133370 states. [2018-11-06 19:46:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133370 states to 133370 states and 154665 transitions. [2018-11-06 19:46:47,616 INFO L78 Accepts]: Start accepts. Automaton has 133370 states and 154665 transitions. Word has length 333 [2018-11-06 19:46:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:47,617 INFO L480 AbstractCegarLoop]: Abstraction has 133370 states and 154665 transitions. [2018-11-06 19:46:47,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:46:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 133370 states and 154665 transitions. [2018-11-06 19:46:47,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2018-11-06 19:46:47,641 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:47,642 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:46:47,642 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:47,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:47,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1718651523, now seen corresponding path program 1 times [2018-11-06 19:46:47,643 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:47,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:47,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:47,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:47,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:48,599 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-11-06 19:46:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 435 proven. 4 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-06 19:46:49,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:46:49,283 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:46:49,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:49,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:46:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-06 19:46:50,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:46:50,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 19:46:50,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:46:50,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:46:50,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:46:50,552 INFO L87 Difference]: Start difference. First operand 133370 states and 154665 transitions. Second operand 5 states. [2018-11-06 19:47:08,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:08,989 INFO L93 Difference]: Finished difference Result 287231 states and 331289 transitions. [2018-11-06 19:47:08,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:47:08,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 636 [2018-11-06 19:47:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:09,143 INFO L225 Difference]: With dead ends: 287231 [2018-11-06 19:47:09,144 INFO L226 Difference]: Without dead ends: 148394 [2018-11-06 19:47:09,212 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 636 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:47:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148394 states. [2018-11-06 19:47:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148394 to 134722. [2018-11-06 19:47:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134722 states. [2018-11-06 19:47:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134722 states to 134722 states and 147923 transitions. [2018-11-06 19:47:10,458 INFO L78 Accepts]: Start accepts. Automaton has 134722 states and 147923 transitions. Word has length 636 [2018-11-06 19:47:10,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:10,459 INFO L480 AbstractCegarLoop]: Abstraction has 134722 states and 147923 transitions. [2018-11-06 19:47:10,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:47:10,459 INFO L276 IsEmpty]: Start isEmpty. Operand 134722 states and 147923 transitions. [2018-11-06 19:47:10,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2018-11-06 19:47:10,492 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:10,492 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:47:10,494 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:10,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:10,501 INFO L82 PathProgramCache]: Analyzing trace with hash 553125180, now seen corresponding path program 1 times [2018-11-06 19:47:10,501 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:10,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:10,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:10,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:10,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-11-06 19:47:12,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:12,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:47:12,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:47:12,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:47:12,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:12,511 INFO L87 Difference]: Start difference. First operand 134722 states and 147923 transitions. Second operand 4 states. [2018-11-06 19:47:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:26,232 INFO L93 Difference]: Finished difference Result 360983 states and 397610 transitions. [2018-11-06 19:47:26,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:47:26,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 888 [2018-11-06 19:47:26,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:26,487 INFO L225 Difference]: With dead ends: 360983 [2018-11-06 19:47:26,488 INFO L226 Difference]: Without dead ends: 209829 [2018-11-06 19:47:26,562 INFO L604 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 [2018-11-06 19:47:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209829 states. [2018-11-06 19:47:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209829 to 204331. [2018-11-06 19:47:28,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204331 states. [2018-11-06 19:47:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204331 states to 204331 states and 220130 transitions. [2018-11-06 19:47:29,871 INFO L78 Accepts]: Start accepts. Automaton has 204331 states and 220130 transitions. Word has length 888 [2018-11-06 19:47:29,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:29,872 INFO L480 AbstractCegarLoop]: Abstraction has 204331 states and 220130 transitions. [2018-11-06 19:47:29,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:47:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 204331 states and 220130 transitions. [2018-11-06 19:47:29,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1090 [2018-11-06 19:47:29,885 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:29,886 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:47:29,887 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:29,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:29,888 INFO L82 PathProgramCache]: Analyzing trace with hash -112090227, now seen corresponding path program 1 times [2018-11-06 19:47:29,888 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:29,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:29,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:29,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:29,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2018-11-06 19:47:32,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:32,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:47:32,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:47:32,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:47:32,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:32,036 INFO L87 Difference]: Start difference. First operand 204331 states and 220130 transitions. Second operand 4 states. [2018-11-06 19:47:47,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:47,383 INFO L93 Difference]: Finished difference Result 576830 states and 626127 transitions. [2018-11-06 19:47:47,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:47:47,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1089 [2018-11-06 19:47:47,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:47,804 INFO L225 Difference]: With dead ends: 576830 [2018-11-06 19:47:47,804 INFO L226 Difference]: Without dead ends: 373867 [2018-11-06 19:47:47,868 INFO L604 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 [2018-11-06 19:47:48,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373867 states. Received shutdown request... [2018-11-06 19:47:50,357 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:47:50,360 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:47:50,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:47:50 BoogieIcfgContainer [2018-11-06 19:47:50,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:47:50,361 INFO L168 Benchmark]: Toolchain (without parser) took 229988.17 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -132.5 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-06 19:47:50,363 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-06 19:47:50,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3793.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:47:50,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 1015.96 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.6 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-06 19:47:50,366 INFO L168 Benchmark]: Boogie Preprocessor took 767.26 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: 110.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. [2018-11-06 19:47:50,366 INFO L168 Benchmark]: RCFGBuilder took 15609.04 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 308.3 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -386.5 MB). Peak memory consumption was 814.4 MB. Max. memory is 7.1 GB. [2018-11-06 19:47:50,367 INFO L168 Benchmark]: TraceAbstraction took 208797.78 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 761.8 MB). Free memory was 2.4 GB in the beginning and 1.5 GB in the end (delta: 885.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-06 19:47:50,372 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3793.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1015.96 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.6 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 767.26 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: 110.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15609.04 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 308.3 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -386.5 MB). Peak memory consumption was 814.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208797.78 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 761.8 MB). Free memory was 2.4 GB in the beginning and 1.5 GB in the end (delta: 885.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 70). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 208.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 185.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10420 SDtfs, 45842 SDslu, 4272 SDs, 0 SdLazy, 99214 SolverSat, 20996 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 149.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1342 GetRequests, 1301 SyntacticMatches, 10 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204331occurred in iteration=7, 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: 11.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 97534 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 4962 NumberOfCodeBlocks, 4962 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4951 ConstructedInterpolants, 0 QuantifiedInterpolants, 8263657 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1586 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 2747/2820 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown