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/Problem03_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 20:00:13,519 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 20:00:13,521 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 20:00:13,534 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 20:00:13,535 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 20:00:13,536 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 20:00:13,538 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 20:00:13,542 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 20:00:13,544 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 20:00:13,545 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 20:00:13,546 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 20:00:13,546 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 20:00:13,547 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 20:00:13,548 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 20:00:13,549 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 20:00:13,550 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 20:00:13,551 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 20:00:13,552 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 20:00:13,555 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 20:00:13,556 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 20:00:13,557 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 20:00:13,559 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 20:00:13,561 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 20:00:13,561 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 20:00:13,562 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 20:00:13,563 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 20:00:13,564 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 20:00:13,565 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 20:00:13,565 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 20:00:13,571 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 20:00:13,571 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 20:00:13,572 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 20:00:13,573 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 20:00:13,573 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 20:00:13,574 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 20:00:13,574 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 20:00:13,575 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 20:00:13,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 20:00:13,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 20:00:13,591 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 20:00:13,591 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 20:00:13,592 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 20:00:13,592 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 20:00:13,592 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 20:00:13,592 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 20:00:13,593 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 20:00:13,593 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 20:00:13,593 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 20:00:13,593 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 20:00:13,593 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 20:00:13,594 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 20:00:13,594 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 20:00:13,594 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 20:00:13,594 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 20:00:13,594 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 20:00:13,597 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 20:00:13,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 20:00:13,597 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 20:00:13,597 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 20:00:13,597 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 20:00:13,598 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 20:00:13,598 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 20:00:13,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 20:00:13,598 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 20:00:13,598 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 20:00:13,653 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 20:00:13,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 20:00:13,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 20:00:13,678 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 20:00:13,678 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 20:00:13,679 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c [2018-11-06 20:00:13,752 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e4768ac/f323fb4c72c7412bba0a427708a08ff6/FLAGac2c299bd [2018-11-06 20:00:14,443 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 20:00:14,444 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c [2018-11-06 20:00:14,468 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e4768ac/f323fb4c72c7412bba0a427708a08ff6/FLAGac2c299bd [2018-11-06 20:00:14,485 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e4768ac/f323fb4c72c7412bba0a427708a08ff6 [2018-11-06 20:00:14,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 20:00:14,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 20:00:14,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 20:00:14,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 20:00:14,506 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 20:00:14,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:00:14" (1/1) ... [2018-11-06 20:00:14,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429b8899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:14, skipping insertion in model container [2018-11-06 20:00:14,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:00:14" (1/1) ... [2018-11-06 20:00:14,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 20:00:14,610 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 20:00:15,288 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 20:00:15,294 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 20:00:15,565 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 20:00:15,590 INFO L193 MainTranslator]: Completed translation [2018-11-06 20:00:15,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15 WrapperNode [2018-11-06 20:00:15,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 20:00:15,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 20:00:15,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 20:00:15,593 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 20:00:15,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15" (1/1) ... [2018-11-06 20:00:15,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15" (1/1) ... [2018-11-06 20:00:15,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 20:00:15,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 20:00:15,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 20:00:15,894 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 20:00:15,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15" (1/1) ... [2018-11-06 20:00:15,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15" (1/1) ... [2018-11-06 20:00:15,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15" (1/1) ... [2018-11-06 20:00:15,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15" (1/1) ... [2018-11-06 20:00:15,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15" (1/1) ... [2018-11-06 20:00:16,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15" (1/1) ... [2018-11-06 20:00:16,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15" (1/1) ... [2018-11-06 20:00:16,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 20:00:16,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 20:00:16,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 20:00:16,050 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 20:00:16,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15" (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 20:00:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 20:00:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 20:00:16,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 20:00:21,776 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 20:00:21,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:00:21 BoogieIcfgContainer [2018-11-06 20:00:21,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 20:00:21,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 20:00:21,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 20:00:21,783 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 20:00:21,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:00:14" (1/3) ... [2018-11-06 20:00:21,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb4e366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:00:21, skipping insertion in model container [2018-11-06 20:00:21,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:00:15" (2/3) ... [2018-11-06 20:00:21,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb4e366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:00:21, skipping insertion in model container [2018-11-06 20:00:21,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:00:21" (3/3) ... [2018-11-06 20:00:21,787 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label55_true-unreach-call.c [2018-11-06 20:00:21,798 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 20:00:21,807 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 20:00:21,825 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 20:00:21,869 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 20:00:21,870 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 20:00:21,870 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 20:00:21,870 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 20:00:21,870 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 20:00:21,871 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 20:00:21,871 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 20:00:21,871 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 20:00:21,871 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 20:00:21,898 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-11-06 20:00:21,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-11-06 20:00:21,919 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:00:21,924 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:21,926 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:00:21,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:00:21,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1176819894, now seen corresponding path program 1 times [2018-11-06 20:00:21,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:00:21,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:00:21,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:21,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:00:21,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:00:22,769 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 20:00:22,868 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 20:00:22,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 20:00:22,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 20:00:22,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 20:00:22,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 20:00:22,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 20:00:22,899 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 4 states. [2018-11-06 20:00:26,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:00:26,571 INFO L93 Difference]: Finished difference Result 1089 states and 1954 transitions. [2018-11-06 20:00:26,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 20:00:26,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2018-11-06 20:00:26,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:00:26,605 INFO L225 Difference]: With dead ends: 1089 [2018-11-06 20:00:26,605 INFO L226 Difference]: Without dead ends: 779 [2018-11-06 20:00:26,612 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 20:00:26,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2018-11-06 20:00:26,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 515. [2018-11-06 20:00:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-11-06 20:00:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 887 transitions. [2018-11-06 20:00:26,722 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 887 transitions. Word has length 163 [2018-11-06 20:00:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:00:26,724 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 887 transitions. [2018-11-06 20:00:26,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 20:00:26,724 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 887 transitions. [2018-11-06 20:00:26,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-06 20:00:26,735 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:00:26,736 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 20:00:26,737 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:00:26,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:00:26,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1931506105, now seen corresponding path program 1 times [2018-11-06 20:00:26,737 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:00:26,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:00:26,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:26,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:00:26,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:00:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 20:00:27,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 20:00:27,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 20:00:27,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 20:00:27,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 20:00:27,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 20:00:27,123 INFO L87 Difference]: Start difference. First operand 515 states and 887 transitions. Second operand 4 states. [2018-11-06 20:00:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:00:32,101 INFO L93 Difference]: Finished difference Result 1903 states and 3379 transitions. [2018-11-06 20:00:32,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 20:00:32,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2018-11-06 20:00:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:00:32,110 INFO L225 Difference]: With dead ends: 1903 [2018-11-06 20:00:32,110 INFO L226 Difference]: Without dead ends: 1390 [2018-11-06 20:00:32,114 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 20:00:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2018-11-06 20:00:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 927. [2018-11-06 20:00:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2018-11-06 20:00:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1521 transitions. [2018-11-06 20:00:32,157 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1521 transitions. Word has length 169 [2018-11-06 20:00:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:00:32,158 INFO L480 AbstractCegarLoop]: Abstraction has 927 states and 1521 transitions. [2018-11-06 20:00:32,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 20:00:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1521 transitions. [2018-11-06 20:00:32,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-06 20:00:32,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:00:32,164 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 20:00:32,164 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:00:32,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:00:32,164 INFO L82 PathProgramCache]: Analyzing trace with hash 753893355, now seen corresponding path program 1 times [2018-11-06 20:00:32,165 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:00:32,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:00:32,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:32,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:00:32,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:00:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 20:00:32,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 20:00:32,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 20:00:32,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 20:00:32,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 20:00:32,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 20:00:32,277 INFO L87 Difference]: Start difference. First operand 927 states and 1521 transitions. Second operand 3 states. [2018-11-06 20:00:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:00:34,290 INFO L93 Difference]: Finished difference Result 2684 states and 4465 transitions. [2018-11-06 20:00:34,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 20:00:34,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2018-11-06 20:00:34,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:00:34,301 INFO L225 Difference]: With dead ends: 2684 [2018-11-06 20:00:34,301 INFO L226 Difference]: Without dead ends: 1759 [2018-11-06 20:00:34,304 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 20:00:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2018-11-06 20:00:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1744. [2018-11-06 20:00:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1744 states. [2018-11-06 20:00:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 2808 transitions. [2018-11-06 20:00:34,345 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 2808 transitions. Word has length 172 [2018-11-06 20:00:34,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:00:34,346 INFO L480 AbstractCegarLoop]: Abstraction has 1744 states and 2808 transitions. [2018-11-06 20:00:34,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 20:00:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 2808 transitions. [2018-11-06 20:00:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-06 20:00:34,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:00:34,351 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 20:00:34,351 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:00:34,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:00:34,351 INFO L82 PathProgramCache]: Analyzing trace with hash 787191427, now seen corresponding path program 1 times [2018-11-06 20:00:34,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:00:34,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:00:34,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:34,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:00:34,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:00:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 20:00:34,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 20:00:34,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 20:00:34,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 20:00:34,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 20:00:34,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 20:00:34,470 INFO L87 Difference]: Start difference. First operand 1744 states and 2808 transitions. Second operand 4 states. [2018-11-06 20:00:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:00:37,368 INFO L93 Difference]: Finished difference Result 6800 states and 11033 transitions. [2018-11-06 20:00:37,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 20:00:37,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2018-11-06 20:00:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:00:37,393 INFO L225 Difference]: With dead ends: 6800 [2018-11-06 20:00:37,393 INFO L226 Difference]: Without dead ends: 5058 [2018-11-06 20:00:37,396 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 20:00:37,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5058 states. [2018-11-06 20:00:37,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5058 to 3383. [2018-11-06 20:00:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3383 states. [2018-11-06 20:00:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3383 states to 3383 states and 5097 transitions. [2018-11-06 20:00:37,473 INFO L78 Accepts]: Start accepts. Automaton has 3383 states and 5097 transitions. Word has length 173 [2018-11-06 20:00:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:00:37,473 INFO L480 AbstractCegarLoop]: Abstraction has 3383 states and 5097 transitions. [2018-11-06 20:00:37,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 20:00:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3383 states and 5097 transitions. [2018-11-06 20:00:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-06 20:00:37,480 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:00:37,480 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 20:00:37,480 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:00:37,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:00:37,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1229143632, now seen corresponding path program 1 times [2018-11-06 20:00:37,481 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:00:37,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:00:37,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:37,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:00:37,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:00:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 20:00:37,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 20:00:37,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 20:00:37,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 20:00:37,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 20:00:37,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 20:00:37,600 INFO L87 Difference]: Start difference. First operand 3383 states and 5097 transitions. Second operand 3 states. [2018-11-06 20:00:38,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:00:38,921 INFO L93 Difference]: Finished difference Result 8205 states and 12323 transitions. [2018-11-06 20:00:38,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 20:00:38,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2018-11-06 20:00:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:00:38,943 INFO L225 Difference]: With dead ends: 8205 [2018-11-06 20:00:38,943 INFO L226 Difference]: Without dead ends: 4824 [2018-11-06 20:00:38,949 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 20:00:38,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2018-11-06 20:00:39,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 4823. [2018-11-06 20:00:39,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4823 states. [2018-11-06 20:00:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 7118 transitions. [2018-11-06 20:00:39,036 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 7118 transitions. Word has length 174 [2018-11-06 20:00:39,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:00:39,036 INFO L480 AbstractCegarLoop]: Abstraction has 4823 states and 7118 transitions. [2018-11-06 20:00:39,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 20:00:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 7118 transitions. [2018-11-06 20:00:39,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-06 20:00:39,045 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:00:39,045 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-11-06 20:00:39,046 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:00:39,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:00:39,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2115229801, now seen corresponding path program 1 times [2018-11-06 20:00:39,046 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:00:39,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:00:39,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:39,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:00:39,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:00:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-06 20:00:39,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 20:00:39,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 20:00:39,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 20:00:39,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 20:00:39,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 20:00:39,517 INFO L87 Difference]: Start difference. First operand 4823 states and 7118 transitions. Second operand 4 states. [2018-11-06 20:00:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:00:42,117 INFO L93 Difference]: Finished difference Result 17399 states and 25715 transitions. [2018-11-06 20:00:42,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 20:00:42,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2018-11-06 20:00:42,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:00:42,183 INFO L225 Difference]: With dead ends: 17399 [2018-11-06 20:00:42,183 INFO L226 Difference]: Without dead ends: 12578 [2018-11-06 20:00:42,193 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 20:00:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12578 states. [2018-11-06 20:00:42,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12578 to 12576. [2018-11-06 20:00:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12576 states. [2018-11-06 20:00:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12576 states to 12576 states and 16796 transitions. [2018-11-06 20:00:42,462 INFO L78 Accepts]: Start accepts. Automaton has 12576 states and 16796 transitions. Word has length 180 [2018-11-06 20:00:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:00:42,464 INFO L480 AbstractCegarLoop]: Abstraction has 12576 states and 16796 transitions. [2018-11-06 20:00:42,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 20:00:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 12576 states and 16796 transitions. [2018-11-06 20:00:42,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-06 20:00:42,488 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:00:42,489 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 20:00:42,489 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:00:42,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:00:42,489 INFO L82 PathProgramCache]: Analyzing trace with hash 473802841, now seen corresponding path program 1 times [2018-11-06 20:00:42,490 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:00:42,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:00:42,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:42,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:00:42,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:00:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-06 20:00:42,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 20:00:42,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 20:00:42,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 20:00:42,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 20:00:42,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 20:00:42,788 INFO L87 Difference]: Start difference. First operand 12576 states and 16796 transitions. Second operand 4 states. [2018-11-06 20:00:45,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:00:45,049 INFO L93 Difference]: Finished difference Result 44990 states and 59446 transitions. [2018-11-06 20:00:45,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 20:00:45,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2018-11-06 20:00:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:00:45,126 INFO L225 Difference]: With dead ends: 44990 [2018-11-06 20:00:45,126 INFO L226 Difference]: Without dead ends: 32416 [2018-11-06 20:00:45,148 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 20:00:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32416 states. [2018-11-06 20:00:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32416 to 22575. [2018-11-06 20:00:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22575 states. [2018-11-06 20:00:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22575 states to 22575 states and 28454 transitions. [2018-11-06 20:00:45,625 INFO L78 Accepts]: Start accepts. Automaton has 22575 states and 28454 transitions. Word has length 200 [2018-11-06 20:00:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:00:45,625 INFO L480 AbstractCegarLoop]: Abstraction has 22575 states and 28454 transitions. [2018-11-06 20:00:45,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 20:00:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand 22575 states and 28454 transitions. [2018-11-06 20:00:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-06 20:00:45,661 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:00:45,662 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:45,663 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:00:45,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:00:45,663 INFO L82 PathProgramCache]: Analyzing trace with hash 588046225, now seen corresponding path program 1 times [2018-11-06 20:00:45,663 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:00:45,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:00:45,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:45,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:00:45,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:00:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:00:46,083 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 20:00:46,143 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 72 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-06 20:00:46,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 20:00:46,144 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 20:00:46,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:00:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:00:46,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 20:00:46,617 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-06 20:00:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-06 20:00:46,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 20:00:46,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 20:00:46,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 20:00:46,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 20:00:46,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-06 20:00:46,700 INFO L87 Difference]: Start difference. First operand 22575 states and 28454 transitions. Second operand 8 states. [2018-11-06 20:00:47,504 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-06 20:00:57,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:00:57,921 INFO L93 Difference]: Finished difference Result 115596 states and 145027 transitions. [2018-11-06 20:00:57,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-06 20:00:57,922 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2018-11-06 20:00:57,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:00:58,086 INFO L225 Difference]: With dead ends: 115596 [2018-11-06 20:00:58,086 INFO L226 Difference]: Without dead ends: 93023 [2018-11-06 20:00:58,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2018-11-06 20:00:58,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93023 states. [2018-11-06 20:00:59,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93023 to 89334. [2018-11-06 20:00:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89334 states. [2018-11-06 20:00:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89334 states to 89334 states and 105618 transitions. [2018-11-06 20:00:59,975 INFO L78 Accepts]: Start accepts. Automaton has 89334 states and 105618 transitions. Word has length 226 [2018-11-06 20:00:59,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:00:59,976 INFO L480 AbstractCegarLoop]: Abstraction has 89334 states and 105618 transitions. [2018-11-06 20:00:59,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 20:00:59,976 INFO L276 IsEmpty]: Start isEmpty. Operand 89334 states and 105618 transitions. [2018-11-06 20:01:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-06 20:01:00,006 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:01:00,006 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 20:01:00,007 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:01:00,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:01:00,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1208092616, now seen corresponding path program 1 times [2018-11-06 20:01:00,007 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:01:00,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:01:00,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:01:00,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:01:00,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:01:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:01:00,482 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 20:01:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 20:01:00,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 20:01:00,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 20:01:00,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 20:01:00,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 20:01:00,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 20:01:00,532 INFO L87 Difference]: Start difference. First operand 89334 states and 105618 transitions. Second operand 4 states. [2018-11-06 20:01:03,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:01:03,081 INFO L93 Difference]: Finished difference Result 214917 states and 252347 transitions. [2018-11-06 20:01:03,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 20:01:03,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 227 [2018-11-06 20:01:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:01:03,272 INFO L225 Difference]: With dead ends: 214917 [2018-11-06 20:01:03,272 INFO L226 Difference]: Without dead ends: 125585 [2018-11-06 20:01:03,359 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 20:01:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125585 states. [2018-11-06 20:01:05,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125585 to 95888. [2018-11-06 20:01:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95888 states. [2018-11-06 20:01:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95888 states to 95888 states and 112246 transitions. [2018-11-06 20:01:05,570 INFO L78 Accepts]: Start accepts. Automaton has 95888 states and 112246 transitions. Word has length 227 [2018-11-06 20:01:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:01:05,570 INFO L480 AbstractCegarLoop]: Abstraction has 95888 states and 112246 transitions. [2018-11-06 20:01:05,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 20:01:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 95888 states and 112246 transitions. [2018-11-06 20:01:05,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-11-06 20:01:05,596 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:01:05,597 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:01:05,597 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:01:05,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:01:05,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1206837492, now seen corresponding path program 1 times [2018-11-06 20:01:05,598 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:01:05,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:01:05,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:01:05,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:01:05,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:01:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:01:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 74 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 20:01:05,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 20:01:05,826 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 20:01:05,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:01:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:01:05,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 20:01:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-06 20:01:06,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 20:01:06,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 20:01:06,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 20:01:06,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 20:01:06,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 20:01:06,091 INFO L87 Difference]: Start difference. First operand 95888 states and 112246 transitions. Second operand 6 states. [2018-11-06 20:01:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:01:12,271 INFO L93 Difference]: Finished difference Result 288607 states and 338761 transitions. [2018-11-06 20:01:12,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 20:01:12,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 235 [2018-11-06 20:01:12,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:01:12,542 INFO L225 Difference]: With dead ends: 288607 [2018-11-06 20:01:12,543 INFO L226 Difference]: Without dead ends: 192721 [2018-11-06 20:01:12,651 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2018-11-06 20:01:12,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192721 states. [2018-11-06 20:01:15,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192721 to 161447. [2018-11-06 20:01:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161447 states. [2018-11-06 20:01:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161447 states to 161447 states and 184170 transitions. [2018-11-06 20:01:15,485 INFO L78 Accepts]: Start accepts. Automaton has 161447 states and 184170 transitions. Word has length 235 [2018-11-06 20:01:15,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:01:15,485 INFO L480 AbstractCegarLoop]: Abstraction has 161447 states and 184170 transitions. [2018-11-06 20:01:15,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 20:01:15,485 INFO L276 IsEmpty]: Start isEmpty. Operand 161447 states and 184170 transitions. [2018-11-06 20:01:15,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-06 20:01:15,512 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:01:15,513 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:01:15,513 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:01:15,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:01:15,513 INFO L82 PathProgramCache]: Analyzing trace with hash -490854985, now seen corresponding path program 1 times [2018-11-06 20:01:15,514 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:01:15,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:01:15,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:01:15,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:01:15,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:01:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:01:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-06 20:01:15,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 20:01:15,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 20:01:15,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 20:01:15,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 20:01:15,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 20:01:15,786 INFO L87 Difference]: Start difference. First operand 161447 states and 184170 transitions. Second operand 3 states. [2018-11-06 20:01:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:01:17,669 INFO L93 Difference]: Finished difference Result 442135 states and 503558 transitions. [2018-11-06 20:01:17,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 20:01:17,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 317 [2018-11-06 20:01:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:01:17,987 INFO L225 Difference]: With dead ends: 442135 [2018-11-06 20:01:17,987 INFO L226 Difference]: Without dead ends: 280690 [2018-11-06 20:01:18,101 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 20:01:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280690 states. [2018-11-06 20:01:22,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280690 to 280688. [2018-11-06 20:01:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280688 states. [2018-11-06 20:01:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280688 states to 280688 states and 319291 transitions. [2018-11-06 20:01:22,987 INFO L78 Accepts]: Start accepts. Automaton has 280688 states and 319291 transitions. Word has length 317 [2018-11-06 20:01:22,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:01:22,987 INFO L480 AbstractCegarLoop]: Abstraction has 280688 states and 319291 transitions. [2018-11-06 20:01:22,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 20:01:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 280688 states and 319291 transitions. [2018-11-06 20:01:23,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-11-06 20:01:23,024 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:01:23,025 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:01:23,025 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:01:23,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:01:23,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1553165065, now seen corresponding path program 1 times [2018-11-06 20:01:23,025 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:01:23,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:01:23,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:01:23,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:01:23,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:01:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:01:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 243 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-11-06 20:01:28,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 20:01:28,781 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 20:01:28,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:01:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:01:28,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 20:01:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-06 20:01:29,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 20:01:29,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-06 20:01:29,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 20:01:29,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 20:01:29,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 20:01:29,085 INFO L87 Difference]: Start difference. First operand 280688 states and 319291 transitions. Second operand 5 states. [2018-11-06 20:01:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:01:38,473 INFO L93 Difference]: Finished difference Result 1698375 states and 1928215 transitions. [2018-11-06 20:01:38,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 20:01:38,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 379 [2018-11-06 20:01:38,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:01:40,440 INFO L225 Difference]: With dead ends: 1698375 [2018-11-06 20:01:40,440 INFO L226 Difference]: Without dead ends: 1417689 [2018-11-06 20:01:42,211 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 378 SyntacticMatches, 1 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 20:01:43,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417689 states. [2018-11-06 20:01:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417689 to 955291. [2018-11-06 20:01:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955291 states. [2018-11-06 20:02:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955291 states to 955291 states and 1082765 transitions. [2018-11-06 20:02:17,307 INFO L78 Accepts]: Start accepts. Automaton has 955291 states and 1082765 transitions. Word has length 379 [2018-11-06 20:02:17,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:02:17,307 INFO L480 AbstractCegarLoop]: Abstraction has 955291 states and 1082765 transitions. [2018-11-06 20:02:17,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 20:02:17,307 INFO L276 IsEmpty]: Start isEmpty. Operand 955291 states and 1082765 transitions. [2018-11-06 20:02:17,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-11-06 20:02:17,389 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:02:17,389 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 20:02:17,390 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:02:17,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:02:17,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1495467861, now seen corresponding path program 1 times [2018-11-06 20:02:17,390 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:02:17,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:02:17,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:02:17,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:02:17,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:02:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:02:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-11-06 20:02:17,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 20:02:17,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 20:02:17,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 20:02:17,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 20:02:17,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 20:02:17,977 INFO L87 Difference]: Start difference. First operand 955291 states and 1082765 transitions. Second operand 4 states. [2018-11-06 20:02:30,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:02:30,559 INFO L93 Difference]: Finished difference Result 1898960 states and 2151616 transitions. [2018-11-06 20:02:30,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 20:02:30,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 404 [2018-11-06 20:02:30,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:02:31,884 INFO L225 Difference]: With dead ends: 1898960 [2018-11-06 20:02:31,884 INFO L226 Difference]: Without dead ends: 943671 [2018-11-06 20:02:33,496 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 20:02:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943671 states. [2018-11-06 20:02:46,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943671 to 943631. [2018-11-06 20:02:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943631 states. [2018-11-06 20:03:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943631 states to 943631 states and 1048545 transitions. [2018-11-06 20:03:08,362 INFO L78 Accepts]: Start accepts. Automaton has 943631 states and 1048545 transitions. Word has length 404 [2018-11-06 20:03:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 20:03:08,362 INFO L480 AbstractCegarLoop]: Abstraction has 943631 states and 1048545 transitions. [2018-11-06 20:03:08,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 20:03:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 943631 states and 1048545 transitions. [2018-11-06 20:03:08,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-11-06 20:03:08,445 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 20:03:08,446 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 20:03:08,446 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 20:03:08,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 20:03:08,446 INFO L82 PathProgramCache]: Analyzing trace with hash -184490042, now seen corresponding path program 1 times [2018-11-06 20:03:08,446 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 20:03:08,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 20:03:08,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:03:08,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 20:03:08,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 20:03:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 20:03:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-06 20:03:08,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 20:03:08,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 20:03:08,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 20:03:08,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 20:03:08,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 20:03:08,793 INFO L87 Difference]: Start difference. First operand 943631 states and 1048545 transitions. Second operand 3 states. [2018-11-06 20:03:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 20:03:19,605 INFO L93 Difference]: Finished difference Result 1850825 states and 2056973 transitions. [2018-11-06 20:03:19,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 20:03:19,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 426 [2018-11-06 20:03:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 20:03:20,874 INFO L225 Difference]: With dead ends: 1850825 [2018-11-06 20:03:20,874 INFO L226 Difference]: Without dead ends: 907196 [2018-11-06 20:03:22,761 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 20:03:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907196 states. Received shutdown request... [2018-11-06 20:03:36,135 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 20:03:36,139 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 20:03:36,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:03:36 BoogieIcfgContainer [2018-11-06 20:03:36,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 20:03:36,141 INFO L168 Benchmark]: Toolchain (without parser) took 201642.98 ms. Allocated memory was 1.5 GB in the beginning and 7.2 GB in the end (delta: 5.7 GB). Free memory was 1.4 GB in the beginning and 4.6 GB in the end (delta: -3.2 GB). Peak memory consumption was 6.4 GB. Max. memory is 7.1 GB. [2018-11-06 20:03:36,142 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 20:03:36,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1091.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-06 20:03:36,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 301.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-11-06 20:03:36,146 INFO L168 Benchmark]: Boogie Preprocessor took 154.88 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 20:03:36,146 INFO L168 Benchmark]: RCFGBuilder took 5728.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 257.4 MB). Peak memory consumption was 257.4 MB. Max. memory is 7.1 GB. [2018-11-06 20:03:36,147 INFO L168 Benchmark]: TraceAbstraction took 194360.84 ms. Allocated memory was 2.3 GB in the beginning and 7.2 GB in the end (delta: 4.9 GB). Free memory was 1.9 GB in the beginning and 4.6 GB in the end (delta: -2.7 GB). Peak memory consumption was 6.2 GB. Max. memory is 7.1 GB. [2018-11-06 20:03:36,152 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1091.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 301.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.88 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5728.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 257.4 MB). Peak memory consumption was 257.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 194360.84 ms. Allocated memory was 2.3 GB in the beginning and 7.2 GB in the end (delta: 4.9 GB). Free memory was 1.9 GB in the beginning and 4.6 GB in the end (delta: -2.7 GB). Peak memory consumption was 6.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1521]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1521). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 303 locations, 1 error locations. TIMEOUT Result, 194.2s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 85.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3797 SDtfs, 14450 SDslu, 3806 SDs, 0 SdLazy, 17926 SolverSat, 4889 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 910 GetRequests, 855 SyntacticMatches, 8 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=955291occurred in iteration=12, 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: 96.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 539361 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 4285 NumberOfCodeBlocks, 4285 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 4268 ConstructedInterpolants, 0 QuantifiedInterpolants, 2286352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1535 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 2273/2286 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown