java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:06:03,508 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:06:03,510 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:06:03,527 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:06:03,527 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:06:03,529 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:06:03,530 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:06:03,532 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:06:03,534 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:06:03,535 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:06:03,536 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:06:03,537 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:06:03,537 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:06:03,538 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:06:03,540 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:06:03,540 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:06:03,541 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:06:03,543 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:06:03,547 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:06:03,549 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:06:03,550 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:06:03,551 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:06:03,553 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:06:03,554 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:06:03,554 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:06:03,555 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:06:03,556 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:06:03,556 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:06:03,557 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:06:03,558 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:06:03,559 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:06:03,559 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:06:03,559 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:06:03,560 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:06:03,561 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:06:03,561 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:06:03,562 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:06:03,584 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:06:03,585 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:06:03,585 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:06:03,586 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:06:03,586 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:06:03,586 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:06:03,587 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:06:03,587 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:06:03,587 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:06:03,587 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:06:03,588 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:06:03,589 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:06:03,589 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:06:03,590 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:06:03,590 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:06:03,590 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:06:03,590 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:06:03,590 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:06:03,591 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:06:03,592 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:06:03,592 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:06:03,592 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:06:03,592 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:06:03,593 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:06:03,593 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:06:03,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:06:03,593 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:06:03,593 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:06:03,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:06:03,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:06:03,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:06:03,683 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:06:03,684 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:06:03,684 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label25_false-unreach-call.c [2018-10-26 19:06:03,747 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b3219be99/be6c9a0f75b947c99e296e800598a014/FLAGf4256d6fc [2018-10-26 19:06:04,553 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:06:04,554 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label25_false-unreach-call.c [2018-10-26 19:06:04,589 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b3219be99/be6c9a0f75b947c99e296e800598a014/FLAGf4256d6fc [2018-10-26 19:06:04,613 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b3219be99/be6c9a0f75b947c99e296e800598a014 [2018-10-26 19:06:04,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:06:04,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:06:04,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:06:04,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:06:04,636 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:06:04,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:06:04" (1/1) ... [2018-10-26 19:06:04,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26998074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:04, skipping insertion in model container [2018-10-26 19:06:04,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:06:04" (1/1) ... [2018-10-26 19:06:04,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:06:04,820 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:06:05,988 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:06:05,992 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:06:06,624 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:06:06,656 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:06:06,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06 WrapperNode [2018-10-26 19:06:06,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:06:06,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:06:06,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:06:06,659 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:06:06,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06" (1/1) ... [2018-10-26 19:06:06,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06" (1/1) ... [2018-10-26 19:06:07,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:06:07,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:06:07,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:06:07,399 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:06:07,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06" (1/1) ... [2018-10-26 19:06:07,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06" (1/1) ... [2018-10-26 19:06:07,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06" (1/1) ... [2018-10-26 19:06:07,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06" (1/1) ... [2018-10-26 19:06:07,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06" (1/1) ... [2018-10-26 19:06:07,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06" (1/1) ... [2018-10-26 19:06:07,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06" (1/1) ... [2018-10-26 19:06:07,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:06:07,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:06:07,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:06:07,737 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:06:07,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:06:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:06:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:06:07,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:06:17,740 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:06:17,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:06:17 BoogieIcfgContainer [2018-10-26 19:06:17,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:06:17,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:06:17,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:06:17,745 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:06:17,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:06:04" (1/3) ... [2018-10-26 19:06:17,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f0d8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:06:17, skipping insertion in model container [2018-10-26 19:06:17,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:06" (2/3) ... [2018-10-26 19:06:17,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f0d8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:06:17, skipping insertion in model container [2018-10-26 19:06:17,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:06:17" (3/3) ... [2018-10-26 19:06:17,749 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label25_false-unreach-call.c [2018-10-26 19:06:17,759 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:06:17,768 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:06:17,786 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:06:17,828 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:06:17,828 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:06:17,828 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:06:17,829 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:06:17,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:06:17,829 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:06:17,829 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:06:17,829 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:06:17,829 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:06:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 19:06:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 19:06:17,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:17,872 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:06:17,874 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:17,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:17,880 INFO L82 PathProgramCache]: Analyzing trace with hash 670581594, now seen corresponding path program 1 times [2018-10-26 19:06:17,882 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:17,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:17,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:17,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:17,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:18,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:06:18,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:06:18,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:06:18,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:06:18,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:18,259 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 19:06:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:30,476 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-26 19:06:30,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:06:30,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-26 19:06:30,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:30,522 INFO L225 Difference]: With dead ends: 3146 [2018-10-26 19:06:30,523 INFO L226 Difference]: Without dead ends: 2320 [2018-10-26 19:06:30,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-26 19:06:30,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-26 19:06:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-26 19:06:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4229 transitions. [2018-10-26 19:06:30,671 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4229 transitions. Word has length 18 [2018-10-26 19:06:30,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:30,672 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4229 transitions. [2018-10-26 19:06:30,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:06:30,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4229 transitions. [2018-10-26 19:06:30,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-26 19:06:30,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:30,676 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:06:30,677 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:30,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:30,677 INFO L82 PathProgramCache]: Analyzing trace with hash 446746015, now seen corresponding path program 1 times [2018-10-26 19:06:30,677 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:30,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:30,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:30,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:30,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:30,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:06:30,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:06:30,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:06:30,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:06:30,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:30,952 INFO L87 Difference]: Start difference. First operand 2320 states and 4229 transitions. Second operand 4 states. [2018-10-26 19:06:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:41,857 INFO L93 Difference]: Finished difference Result 9150 states and 16788 transitions. [2018-10-26 19:06:41,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:06:41,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2018-10-26 19:06:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:41,895 INFO L225 Difference]: With dead ends: 9150 [2018-10-26 19:06:41,895 INFO L226 Difference]: Without dead ends: 6832 [2018-10-26 19:06:41,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-26 19:06:42,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-26 19:06:42,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-26 19:06:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10629 transitions. [2018-10-26 19:06:42,042 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10629 transitions. Word has length 94 [2018-10-26 19:06:42,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:42,042 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 10629 transitions. [2018-10-26 19:06:42,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:06:42,043 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10629 transitions. [2018-10-26 19:06:42,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-26 19:06:42,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:42,048 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:06:42,048 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:42,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:42,050 INFO L82 PathProgramCache]: Analyzing trace with hash 343230256, now seen corresponding path program 1 times [2018-10-26 19:06:42,050 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:42,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:42,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:42,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:42,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:42,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:06:42,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:06:42,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:06:42,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:06:42,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:42,418 INFO L87 Difference]: Start difference. First operand 6832 states and 10629 transitions. Second operand 4 states. [2018-10-26 19:06:50,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:50,764 INFO L93 Difference]: Finished difference Result 27260 states and 42449 transitions. [2018-10-26 19:06:50,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:06:50,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-10-26 19:06:50,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:50,849 INFO L225 Difference]: With dead ends: 27260 [2018-10-26 19:06:50,850 INFO L226 Difference]: Without dead ends: 20430 [2018-10-26 19:06:50,861 INFO L605 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 [2018-10-26 19:06:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20430 states. [2018-10-26 19:06:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20430 to 13600. [2018-10-26 19:06:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13600 states. [2018-10-26 19:06:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 19341 transitions. [2018-10-26 19:06:51,194 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 19341 transitions. Word has length 100 [2018-10-26 19:06:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:51,195 INFO L481 AbstractCegarLoop]: Abstraction has 13600 states and 19341 transitions. [2018-10-26 19:06:51,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:06:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 19341 transitions. [2018-10-26 19:06:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-26 19:06:51,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:51,210 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:06:51,211 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:51,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:51,211 INFO L82 PathProgramCache]: Analyzing trace with hash -544105501, now seen corresponding path program 1 times [2018-10-26 19:06:51,211 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:51,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:51,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:51,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:51,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:51,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:06:51,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:06:51,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:06:51,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:06:51,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:51,554 INFO L87 Difference]: Start difference. First operand 13600 states and 19341 transitions. Second operand 4 states. [2018-10-26 19:07:00,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:00,248 INFO L93 Difference]: Finished difference Result 52783 states and 74748 transitions. [2018-10-26 19:07:00,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:07:00,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-10-26 19:07:00,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:00,321 INFO L225 Difference]: With dead ends: 52783 [2018-10-26 19:07:00,321 INFO L226 Difference]: Without dead ends: 39185 [2018-10-26 19:07:00,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:07:00,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39185 states. [2018-10-26 19:07:00,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39185 to 26384. [2018-10-26 19:07:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26384 states. [2018-10-26 19:07:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 33902 transitions. [2018-10-26 19:07:00,863 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 33902 transitions. Word has length 118 [2018-10-26 19:07:00,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:00,864 INFO L481 AbstractCegarLoop]: Abstraction has 26384 states and 33902 transitions. [2018-10-26 19:07:00,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:07:00,864 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 33902 transitions. [2018-10-26 19:07:00,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-26 19:07:00,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:00,871 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:00,871 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:00,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:00,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1050401920, now seen corresponding path program 1 times [2018-10-26 19:07:00,874 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:00,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:00,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:00,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:00,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:07:01,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:01,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:07:01,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:07:01,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:07:01,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:07:01,311 INFO L87 Difference]: Start difference. First operand 26384 states and 33902 transitions. Second operand 4 states. [2018-10-26 19:07:12,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:12,107 INFO L93 Difference]: Finished difference Result 52766 states and 67802 transitions. [2018-10-26 19:07:12,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:07:12,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2018-10-26 19:07:12,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:12,168 INFO L225 Difference]: With dead ends: 52766 [2018-10-26 19:07:12,168 INFO L226 Difference]: Without dead ends: 26384 [2018-10-26 19:07:12,196 INFO L605 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 [2018-10-26 19:07:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26384 states. [2018-10-26 19:07:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26384 to 26384. [2018-10-26 19:07:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26384 states. [2018-10-26 19:07:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 32888 transitions. [2018-10-26 19:07:12,558 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 32888 transitions. Word has length 247 [2018-10-26 19:07:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:12,559 INFO L481 AbstractCegarLoop]: Abstraction has 26384 states and 32888 transitions. [2018-10-26 19:07:12,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:07:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 32888 transitions. [2018-10-26 19:07:12,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-26 19:07:12,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:12,567 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:12,567 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:12,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:12,568 INFO L82 PathProgramCache]: Analyzing trace with hash -827461878, now seen corresponding path program 1 times [2018-10-26 19:07:12,568 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:12,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:12,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:12,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:12,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-26 19:07:13,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:13,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:07:13,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:07:13,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:07:13,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:07:13,007 INFO L87 Difference]: Start difference. First operand 26384 states and 32888 transitions. Second operand 5 states. [2018-10-26 19:07:22,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:22,105 INFO L93 Difference]: Finished difference Result 98638 states and 123348 transitions. [2018-10-26 19:07:22,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:07:22,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2018-10-26 19:07:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:22,222 INFO L225 Difference]: With dead ends: 98638 [2018-10-26 19:07:22,223 INFO L226 Difference]: Without dead ends: 72256 [2018-10-26 19:07:22,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:07:22,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72256 states. [2018-10-26 19:07:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72256 to 72256. [2018-10-26 19:07:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72256 states. [2018-10-26 19:07:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72256 states to 72256 states and 84563 transitions. [2018-10-26 19:07:23,056 INFO L78 Accepts]: Start accepts. Automaton has 72256 states and 84563 transitions. Word has length 251 [2018-10-26 19:07:23,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:23,056 INFO L481 AbstractCegarLoop]: Abstraction has 72256 states and 84563 transitions. [2018-10-26 19:07:23,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:07:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 72256 states and 84563 transitions. [2018-10-26 19:07:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-26 19:07:23,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:23,068 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 19:07:23,068 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:23,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:23,069 INFO L82 PathProgramCache]: Analyzing trace with hash 891280383, now seen corresponding path program 1 times [2018-10-26 19:07:23,069 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:23,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:23,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:23,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:23,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:23,551 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-26 19:07:23,852 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-26 19:07:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 203 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-26 19:07:23,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:07:23,979 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:07:23,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:24,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:07:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-26 19:07:24,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:07:24,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-26 19:07:24,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:07:24,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:07:24,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:07:24,328 INFO L87 Difference]: Start difference. First operand 72256 states and 84563 transitions. Second operand 6 states. [2018-10-26 19:07:25,365 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-26 19:07:44,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:44,482 INFO L93 Difference]: Finished difference Result 176128 states and 202657 transitions. [2018-10-26 19:07:44,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:07:44,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 275 [2018-10-26 19:07:44,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:44,630 INFO L225 Difference]: With dead ends: 176128 [2018-10-26 19:07:44,630 INFO L226 Difference]: Without dead ends: 102367 [2018-10-26 19:07:44,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 276 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:07:44,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102367 states. [2018-10-26 19:07:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102367 to 73759. [2018-10-26 19:07:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73759 states. [2018-10-26 19:07:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73759 states to 73759 states and 84004 transitions. [2018-10-26 19:07:45,746 INFO L78 Accepts]: Start accepts. Automaton has 73759 states and 84004 transitions. Word has length 275 [2018-10-26 19:07:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:45,747 INFO L481 AbstractCegarLoop]: Abstraction has 73759 states and 84004 transitions. [2018-10-26 19:07:45,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:07:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 73759 states and 84004 transitions. [2018-10-26 19:07:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-26 19:07:45,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:45,765 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:45,765 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:45,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:45,765 INFO L82 PathProgramCache]: Analyzing trace with hash 28154518, now seen corresponding path program 1 times [2018-10-26 19:07:45,766 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:45,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:45,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:45,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:45,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-10-26 19:07:46,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:46,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:07:46,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:07:46,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:07:46,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:07:46,152 INFO L87 Difference]: Start difference. First operand 73759 states and 84004 transitions. Second operand 3 states. [2018-10-26 19:07:52,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:52,120 INFO L93 Difference]: Finished difference Result 162556 states and 184984 transitions. [2018-10-26 19:07:52,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:07:52,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 278 [2018-10-26 19:07:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:52,255 INFO L225 Difference]: With dead ends: 162556 [2018-10-26 19:07:52,256 INFO L226 Difference]: Without dead ends: 89551 [2018-10-26 19:07:52,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:07:52,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89551 states. [2018-10-26 19:07:54,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89551 to 89551. [2018-10-26 19:07:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89551 states. [2018-10-26 19:07:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89551 states to 89551 states and 100849 transitions. [2018-10-26 19:07:54,148 INFO L78 Accepts]: Start accepts. Automaton has 89551 states and 100849 transitions. Word has length 278 [2018-10-26 19:07:54,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:54,149 INFO L481 AbstractCegarLoop]: Abstraction has 89551 states and 100849 transitions. [2018-10-26 19:07:54,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:07:54,149 INFO L276 IsEmpty]: Start isEmpty. Operand 89551 states and 100849 transitions. [2018-10-26 19:07:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-26 19:07:54,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:54,173 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-26 19:07:54,173 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:54,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:54,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1666325953, now seen corresponding path program 1 times [2018-10-26 19:07:54,174 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:54,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:54,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:54,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:54,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:54,592 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:07:55,061 WARN L179 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2018-10-26 19:07:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-26 19:07:55,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:55,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:07:55,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:07:55,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:07:55,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:07:55,424 INFO L87 Difference]: Start difference. First operand 89551 states and 100849 transitions. Second operand 6 states. [2018-10-26 19:08:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:06,195 INFO L93 Difference]: Finished difference Result 207677 states and 235838 transitions. [2018-10-26 19:08:06,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:08:06,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 377 [2018-10-26 19:08:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:06,343 INFO L225 Difference]: With dead ends: 207677 [2018-10-26 19:08:06,343 INFO L226 Difference]: Without dead ends: 112101 [2018-10-26 19:08:06,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:08:06,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112101 states. [2018-10-26 19:08:08,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112101 to 110597. [2018-10-26 19:08:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110597 states. [2018-10-26 19:08:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110597 states to 110597 states and 122825 transitions. [2018-10-26 19:08:08,224 INFO L78 Accepts]: Start accepts. Automaton has 110597 states and 122825 transitions. Word has length 377 [2018-10-26 19:08:08,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:08,224 INFO L481 AbstractCegarLoop]: Abstraction has 110597 states and 122825 transitions. [2018-10-26 19:08:08,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:08:08,224 INFO L276 IsEmpty]: Start isEmpty. Operand 110597 states and 122825 transitions. [2018-10-26 19:08:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-10-26 19:08:08,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:08,251 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:08:08,251 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:08,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:08,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1258323644, now seen corresponding path program 1 times [2018-10-26 19:08:08,252 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:08,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:08,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:08,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:08,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 485 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-10-26 19:08:08,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:08:08,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:08:08,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:08:08,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:08:08,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:08:08,569 INFO L87 Difference]: Start difference. First operand 110597 states and 122825 transitions. Second operand 3 states. [2018-10-26 19:08:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:14,409 INFO L93 Difference]: Finished difference Result 241496 states and 268474 transitions. [2018-10-26 19:08:14,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:08:14,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 459 [2018-10-26 19:08:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:14,630 INFO L225 Difference]: With dead ends: 241496 [2018-10-26 19:08:14,630 INFO L226 Difference]: Without dead ends: 131653 [2018-10-26 19:08:14,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:08:14,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131653 states. [2018-10-26 19:08:16,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131653 to 130901. [2018-10-26 19:08:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130901 states. [2018-10-26 19:08:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130901 states to 130901 states and 142197 transitions. [2018-10-26 19:08:16,903 INFO L78 Accepts]: Start accepts. Automaton has 130901 states and 142197 transitions. Word has length 459 [2018-10-26 19:08:16,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:16,903 INFO L481 AbstractCegarLoop]: Abstraction has 130901 states and 142197 transitions. [2018-10-26 19:08:16,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:08:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 130901 states and 142197 transitions. [2018-10-26 19:08:16,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-10-26 19:08:16,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:16,921 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:08:16,921 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:16,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:16,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1041678296, now seen corresponding path program 1 times [2018-10-26 19:08:16,921 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:16,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:16,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:16,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:16,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:17,341 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:08:17,841 WARN L179 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-26 19:08:18,329 WARN L179 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2018-10-26 19:08:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 585 proven. 8 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-10-26 19:08:18,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:08:18,557 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:08:18,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:18,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:08:18,890 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2018-10-26 19:08:18,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:08:18,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 19:08:18,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:08:18,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:08:18,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:08:18,913 INFO L87 Difference]: Start difference. First operand 130901 states and 142197 transitions. Second operand 7 states. [2018-10-26 19:08:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:36,113 INFO L93 Difference]: Finished difference Result 258787 states and 281383 transitions. [2018-10-26 19:08:36,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:08:36,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 497 [2018-10-26 19:08:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:36,267 INFO L225 Difference]: With dead ends: 258787 [2018-10-26 19:08:36,268 INFO L226 Difference]: Without dead ends: 128640 [2018-10-26 19:08:36,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 499 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:08:36,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128640 states. [2018-10-26 19:08:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128640 to 125632. [2018-10-26 19:08:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125632 states. [2018-10-26 19:08:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125632 states to 125632 states and 132732 transitions. [2018-10-26 19:08:37,280 INFO L78 Accepts]: Start accepts. Automaton has 125632 states and 132732 transitions. Word has length 497 [2018-10-26 19:08:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:37,281 INFO L481 AbstractCegarLoop]: Abstraction has 125632 states and 132732 transitions. [2018-10-26 19:08:37,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:08:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 125632 states and 132732 transitions. [2018-10-26 19:08:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2018-10-26 19:08:37,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:37,314 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:08:37,315 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:37,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:37,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1463867924, now seen corresponding path program 1 times [2018-10-26 19:08:37,315 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:37,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:37,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:37,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:37,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:08:39,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:08:39,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:08:39,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:08:39,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:08:39,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:08:39,447 INFO L87 Difference]: Start difference. First operand 125632 states and 132732 transitions. Second operand 4 states. [2018-10-26 19:08:48,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:48,040 INFO L93 Difference]: Finished difference Result 261790 states and 276791 transitions. [2018-10-26 19:08:48,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:08:48,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 698 [2018-10-26 19:08:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:48,202 INFO L225 Difference]: With dead ends: 261790 [2018-10-26 19:08:48,203 INFO L226 Difference]: Without dead ends: 136912 [2018-10-26 19:08:48,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:08:48,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136912 states. [2018-10-26 19:08:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136912 to 133904. [2018-10-26 19:08:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133904 states. [2018-10-26 19:08:49,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133904 states to 133904 states and 140186 transitions. [2018-10-26 19:08:49,357 INFO L78 Accepts]: Start accepts. Automaton has 133904 states and 140186 transitions. Word has length 698 [2018-10-26 19:08:49,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:49,358 INFO L481 AbstractCegarLoop]: Abstraction has 133904 states and 140186 transitions. [2018-10-26 19:08:49,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:08:49,358 INFO L276 IsEmpty]: Start isEmpty. Operand 133904 states and 140186 transitions. [2018-10-26 19:08:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2018-10-26 19:08:49,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:49,423 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:08:49,423 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:49,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:49,424 INFO L82 PathProgramCache]: Analyzing trace with hash -28131880, now seen corresponding path program 1 times [2018-10-26 19:08:49,424 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:49,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:49,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:49,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:49,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 738 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-10-26 19:08:51,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:08:51,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:08:51,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:08:51,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:08:51,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:08:51,166 INFO L87 Difference]: Start difference. First operand 133904 states and 140186 transitions. Second operand 4 states. [2018-10-26 19:08:58,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:58,030 INFO L93 Difference]: Finished difference Result 267054 states and 279613 transitions. [2018-10-26 19:08:58,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:08:58,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 905 [2018-10-26 19:08:58,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:01,409 INFO L225 Difference]: With dead ends: 267054 [2018-10-26 19:09:01,410 INFO L226 Difference]: Without dead ends: 129383 [2018-10-26 19:09:01,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:01,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129383 states. [2018-10-26 19:09:02,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129383 to 124871. [2018-10-26 19:09:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124871 states. [2018-10-26 19:09:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124871 states to 124871 states and 128727 transitions. [2018-10-26 19:09:02,504 INFO L78 Accepts]: Start accepts. Automaton has 124871 states and 128727 transitions. Word has length 905 [2018-10-26 19:09:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:02,505 INFO L481 AbstractCegarLoop]: Abstraction has 124871 states and 128727 transitions. [2018-10-26 19:09:02,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:09:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 124871 states and 128727 transitions. [2018-10-26 19:09:02,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2018-10-26 19:09:02,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:02,573 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:09:02,574 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:02,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:02,574 INFO L82 PathProgramCache]: Analyzing trace with hash 760328512, now seen corresponding path program 1 times [2018-10-26 19:09:02,574 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:02,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:02,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:02,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:02,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 1123 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2018-10-26 19:09:03,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:09:03,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:09:03,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:09:03,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:09:03,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:03,593 INFO L87 Difference]: Start difference. First operand 124871 states and 128727 transitions. Second operand 4 states. [2018-10-26 19:09:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:09:09,586 INFO L93 Difference]: Finished difference Result 249740 states and 257451 transitions. [2018-10-26 19:09:09,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:09:09,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 993 [2018-10-26 19:09:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:09,705 INFO L225 Difference]: With dead ends: 249740 [2018-10-26 19:09:09,705 INFO L226 Difference]: Without dead ends: 120353 [2018-10-26 19:09:09,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120353 states. [2018-10-26 19:09:11,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120353 to 118849. [2018-10-26 19:09:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118849 states. [2018-10-26 19:09:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118849 states to 118849 states and 122482 transitions. [2018-10-26 19:09:11,172 INFO L78 Accepts]: Start accepts. Automaton has 118849 states and 122482 transitions. Word has length 993 [2018-10-26 19:09:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:11,172 INFO L481 AbstractCegarLoop]: Abstraction has 118849 states and 122482 transitions. [2018-10-26 19:09:11,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:09:11,172 INFO L276 IsEmpty]: Start isEmpty. Operand 118849 states and 122482 transitions. [2018-10-26 19:09:11,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2018-10-26 19:09:11,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:11,238 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:09:11,238 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:11,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:11,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1341308809, now seen corresponding path program 1 times [2018-10-26 19:09:11,239 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:11,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:11,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:11,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:11,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:11,909 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:09:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 1014 proven. 461 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-26 19:09:13,661 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:09:13,661 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:09:13,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:13,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:09:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 1250 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2018-10-26 19:09:15,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:09:15,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2018-10-26 19:09:15,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 19:09:15,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 19:09:15,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:09:15,164 INFO L87 Difference]: Start difference. First operand 118849 states and 122482 transitions. Second operand 11 states. Received shutdown request... [2018-10-26 19:09:49,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-26 19:09:49,846 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:09:49,853 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:09:49,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:09:49 BoogieIcfgContainer [2018-10-26 19:09:49,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:09:49,855 INFO L168 Benchmark]: Toolchain (without parser) took 225228.86 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-26 19:09:49,856 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:09:49,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2027.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:49,857 INFO L168 Benchmark]: Boogie Procedure Inliner took 739.67 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 802.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -990.2 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:49,858 INFO L168 Benchmark]: Boogie Preprocessor took 337.51 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:49,859 INFO L168 Benchmark]: RCFGBuilder took 10004.09 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 251.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -238.9 MB). Peak memory consumption was 675.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:49,860 INFO L168 Benchmark]: TraceAbstraction took 212111.59 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -586.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-26 19:09:49,865 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 2027.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 739.67 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 802.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -990.2 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 337.51 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10004.09 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 251.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -238.9 MB). Peak memory consumption was 675.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212111.59 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -586.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 63). Cancelled while BasicCegarLoop was constructing difference of abstraction (118849states) and FLOYD_HOARE automaton (currently 18 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (112047 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 212.0s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 181.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8285 SDtfs, 35366 SDslu, 1854 SDs, 0 SdLazy, 108916 SolverSat, 14699 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 139.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1956 GetRequests, 1879 SyntacticMatches, 22 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133904occurred 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: 13.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 62527 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 8234 NumberOfCodeBlocks, 8234 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8216 ConstructedInterpolants, 0 QuantifiedInterpolants, 13098182 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2345 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 9505/9979 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown