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/Problem17_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:47:44,594 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:47:44,596 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:47:44,608 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:47:44,609 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:47:44,610 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:47:44,611 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:47:44,613 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:47:44,615 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:47:44,615 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:47:44,616 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:47:44,617 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:47:44,618 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:47:44,619 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:47:44,620 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:47:44,621 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:47:44,622 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:47:44,624 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:47:44,626 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:47:44,628 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:47:44,629 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:47:44,630 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:47:44,633 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:47:44,642 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 [2018-10-23 20:47:44,658 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:47:44,658 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:47:44,659 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:47:44,659 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:47:44,663 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:47:44,663 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:47:44,663 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:47:44,663 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:47:44,663 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:47:44,664 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:47:44,664 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:47:44,664 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:47:44,664 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:47:44,664 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:47:44,665 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:47:44,666 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:47:44,666 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:47:44,666 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:47:44,667 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:47:44,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:47:44,668 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:47:44,668 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:47:44,668 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:47:44,669 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:47:44,669 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:47:44,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:47:44,669 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:47:44,670 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:47:44,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:47:44,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:47:44,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:47:44,752 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:47:44,753 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:47:44,754 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label43_true-unreach-call.c [2018-10-23 20:47:44,819 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4deec6666/d45f08876d96419ba22ed99c359ff5be/FLAG58c55f374 [2018-10-23 20:47:45,582 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:47:45,585 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label43_true-unreach-call.c [2018-10-23 20:47:45,608 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4deec6666/d45f08876d96419ba22ed99c359ff5be/FLAG58c55f374 [2018-10-23 20:47:45,624 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4deec6666/d45f08876d96419ba22ed99c359ff5be [2018-10-23 20:47:45,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:47:45,638 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:47:45,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:47:45,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:47:45,643 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:47:45,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:47:45" (1/1) ... [2018-10-23 20:47:45,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e73541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:45, skipping insertion in model container [2018-10-23 20:47:45,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:47:45" (1/1) ... [2018-10-23 20:47:45,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:47:45,781 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:47:46,746 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:47:46,751 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:47:47,141 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:47:47,163 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:47:47,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47 WrapperNode [2018-10-23 20:47:47,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:47:47,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:47:47,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:47:47,166 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:47:47,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47" (1/1) ... [2018-10-23 20:47:47,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47" (1/1) ... [2018-10-23 20:47:47,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:47:47,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:47:47,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:47:47,671 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:47:47,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47" (1/1) ... [2018-10-23 20:47:47,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47" (1/1) ... [2018-10-23 20:47:47,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47" (1/1) ... [2018-10-23 20:47:47,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47" (1/1) ... [2018-10-23 20:47:47,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47" (1/1) ... [2018-10-23 20:47:47,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47" (1/1) ... [2018-10-23 20:47:47,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47" (1/1) ... [2018-10-23 20:47:47,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:47:47,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:47:47,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:47:47,957 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:47:47,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47" (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 [2018-10-23 20:47:48,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:47:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:47:48,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:47:57,037 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:47:57,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:47:57 BoogieIcfgContainer [2018-10-23 20:47:57,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:47:57,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:47:57,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:47:57,043 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:47:57,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:47:45" (1/3) ... [2018-10-23 20:47:57,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329d549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:47:57, skipping insertion in model container [2018-10-23 20:47:57,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:47:47" (2/3) ... [2018-10-23 20:47:57,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329d549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:47:57, skipping insertion in model container [2018-10-23 20:47:57,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:47:57" (3/3) ... [2018-10-23 20:47:57,047 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label43_true-unreach-call.c [2018-10-23 20:47:57,057 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:47:57,067 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:47:57,085 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:47:57,128 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:47:57,129 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:47:57,129 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:47:57,129 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:47:57,129 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:47:57,129 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:47:57,129 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:47:57,130 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:47:57,130 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:47:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:47:57,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-23 20:47:57,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:47:57,173 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:47:57,176 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:47:57,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:47:57,182 INFO L82 PathProgramCache]: Analyzing trace with hash 265969354, now seen corresponding path program 1 times [2018-10-23 20:47:57,185 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:47:57,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:47:57,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:47:57,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:47:57,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:47:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:47:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:47:57,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:47:57,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:47:57,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:47:57,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:47:57,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:47:57,742 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:48:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:48:08,676 INFO L93 Difference]: Finished difference Result 2078 states and 3883 transitions. [2018-10-23 20:48:08,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:48:08,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-10-23 20:48:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:48:08,714 INFO L225 Difference]: With dead ends: 2078 [2018-10-23 20:48:08,714 INFO L226 Difference]: Without dead ends: 1480 [2018-10-23 20:48:08,722 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 [2018-10-23 20:48:08,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2018-10-23 20:48:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1019. [2018-10-23 20:48:08,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2018-10-23 20:48:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1572 transitions. [2018-10-23 20:48:08,840 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1572 transitions. Word has length 63 [2018-10-23 20:48:08,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:48:08,840 INFO L481 AbstractCegarLoop]: Abstraction has 1019 states and 1572 transitions. [2018-10-23 20:48:08,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:48:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1572 transitions. [2018-10-23 20:48:08,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-23 20:48:08,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:48:08,851 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:48:08,851 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:48:08,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:48:08,852 INFO L82 PathProgramCache]: Analyzing trace with hash 620356926, now seen corresponding path program 1 times [2018-10-23 20:48:08,853 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:48:08,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:48:08,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:08,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:08,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:48:09,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:48:09,273 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 [2018-10-23 20:48:09,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:09,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:48:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:48:09,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:48:09,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:48:09,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:48:09,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:48:09,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:48:09,695 INFO L87 Difference]: Start difference. First operand 1019 states and 1572 transitions. Second operand 6 states. [2018-10-23 20:48:25,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:48:25,811 INFO L93 Difference]: Finished difference Result 4293 states and 6868 transitions. [2018-10-23 20:48:25,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:48:25,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-23 20:48:25,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:48:25,834 INFO L225 Difference]: With dead ends: 4293 [2018-10-23 20:48:25,834 INFO L226 Difference]: Without dead ends: 3276 [2018-10-23 20:48:25,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:48:25,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2018-10-23 20:48:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3264. [2018-10-23 20:48:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3264 states. [2018-10-23 20:48:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3264 states to 3264 states and 4791 transitions. [2018-10-23 20:48:25,935 INFO L78 Accepts]: Start accepts. Automaton has 3264 states and 4791 transitions. Word has length 134 [2018-10-23 20:48:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:48:25,936 INFO L481 AbstractCegarLoop]: Abstraction has 3264 states and 4791 transitions. [2018-10-23 20:48:25,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:48:25,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3264 states and 4791 transitions. [2018-10-23 20:48:25,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-23 20:48:25,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:48:25,943 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:48:25,943 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:48:25,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:48:25,944 INFO L82 PathProgramCache]: Analyzing trace with hash 2014842391, now seen corresponding path program 1 times [2018-10-23 20:48:25,944 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:48:25,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:48:25,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:25,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:25,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:48:26,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:48:26,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:48:26,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:48:26,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:48:26,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:48:26,412 INFO L87 Difference]: Start difference. First operand 3264 states and 4791 transitions. Second operand 5 states. [2018-10-23 20:48:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:48:37,710 INFO L93 Difference]: Finished difference Result 14759 states and 21773 transitions. [2018-10-23 20:48:37,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:48:37,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-10-23 20:48:37,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:48:37,763 INFO L225 Difference]: With dead ends: 14759 [2018-10-23 20:48:37,763 INFO L226 Difference]: Without dead ends: 11497 [2018-10-23 20:48:37,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:48:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11497 states. [2018-10-23 20:48:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11497 to 6249. [2018-10-23 20:48:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6249 states. [2018-10-23 20:48:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6249 states to 6249 states and 8433 transitions. [2018-10-23 20:48:38,091 INFO L78 Accepts]: Start accepts. Automaton has 6249 states and 8433 transitions. Word has length 169 [2018-10-23 20:48:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:48:38,091 INFO L481 AbstractCegarLoop]: Abstraction has 6249 states and 8433 transitions. [2018-10-23 20:48:38,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:48:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6249 states and 8433 transitions. [2018-10-23 20:48:38,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-23 20:48:38,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:48:38,097 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:48:38,097 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:48:38,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:48:38,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1332512410, now seen corresponding path program 1 times [2018-10-23 20:48:38,098 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:48:38,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:48:38,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:38,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:38,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-23 20:48:38,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:48:38,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:48:38,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:48:38,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:48:38,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:48:38,405 INFO L87 Difference]: Start difference. First operand 6249 states and 8433 transitions. Second operand 3 states. [2018-10-23 20:48:42,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:48:42,710 INFO L93 Difference]: Finished difference Result 17164 states and 23439 transitions. [2018-10-23 20:48:42,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:48:42,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2018-10-23 20:48:42,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:48:42,739 INFO L225 Difference]: With dead ends: 17164 [2018-10-23 20:48:42,739 INFO L226 Difference]: Without dead ends: 9147 [2018-10-23 20:48:42,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:48:42,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9147 states. [2018-10-23 20:48:42,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9147 to 8717. [2018-10-23 20:48:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8717 states. [2018-10-23 20:48:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8717 states to 8717 states and 10134 transitions. [2018-10-23 20:48:42,899 INFO L78 Accepts]: Start accepts. Automaton has 8717 states and 10134 transitions. Word has length 238 [2018-10-23 20:48:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:48:42,900 INFO L481 AbstractCegarLoop]: Abstraction has 8717 states and 10134 transitions. [2018-10-23 20:48:42,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:48:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 8717 states and 10134 transitions. [2018-10-23 20:48:42,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-23 20:48:42,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:48:42,906 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:48:42,906 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:48:42,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:48:42,907 INFO L82 PathProgramCache]: Analyzing trace with hash 502042689, now seen corresponding path program 1 times [2018-10-23 20:48:42,907 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:48:42,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:48:42,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:42,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:42,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 143 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-23 20:48:43,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:48:43,290 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 [2018-10-23 20:48:43,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:43,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:48:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-10-23 20:48:43,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:48:43,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:48:43,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:48:43,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:48:43,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:48:43,600 INFO L87 Difference]: Start difference. First operand 8717 states and 10134 transitions. Second operand 5 states. [2018-10-23 20:48:48,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:48:48,574 INFO L93 Difference]: Finished difference Result 21691 states and 25724 transitions. [2018-10-23 20:48:48,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:48:48,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2018-10-23 20:48:48,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:48:48,603 INFO L225 Difference]: With dead ends: 21691 [2018-10-23 20:48:48,604 INFO L226 Difference]: Without dead ends: 12976 [2018-10-23 20:48:48,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:48:48,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2018-10-23 20:48:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 12975. [2018-10-23 20:48:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12975 states. [2018-10-23 20:48:48,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12975 states to 12975 states and 14813 transitions. [2018-10-23 20:48:48,794 INFO L78 Accepts]: Start accepts. Automaton has 12975 states and 14813 transitions. Word has length 251 [2018-10-23 20:48:48,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:48:48,795 INFO L481 AbstractCegarLoop]: Abstraction has 12975 states and 14813 transitions. [2018-10-23 20:48:48,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:48:48,795 INFO L276 IsEmpty]: Start isEmpty. Operand 12975 states and 14813 transitions. [2018-10-23 20:48:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-10-23 20:48:48,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:48:48,806 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:48:48,807 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:48:48,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:48:48,807 INFO L82 PathProgramCache]: Analyzing trace with hash -208627884, now seen corresponding path program 1 times [2018-10-23 20:48:48,807 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:48:48,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:48:48,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:48,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:48,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:48:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 405 proven. 83 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-10-23 20:48:49,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:48:49,286 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 [2018-10-23 20:48:49,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:48:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:48:49,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:48:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 405 proven. 83 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-10-23 20:48:49,605 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:48:49,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-23 20:48:49,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:48:49,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:48:49,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:48:49,607 INFO L87 Difference]: Start difference. First operand 12975 states and 14813 transitions. Second operand 7 states. [2018-10-23 20:49:04,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:49:04,326 INFO L93 Difference]: Finished difference Result 48571 states and 54849 transitions. [2018-10-23 20:49:04,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:49:04,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2018-10-23 20:49:04,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:49:04,377 INFO L225 Difference]: With dead ends: 48571 [2018-10-23 20:49:04,377 INFO L226 Difference]: Without dead ends: 26153 [2018-10-23 20:49:04,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:49:04,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26153 states. [2018-10-23 20:49:04,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26153 to 24005. [2018-10-23 20:49:04,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24005 states. [2018-10-23 20:49:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24005 states to 24005 states and 26227 transitions. [2018-10-23 20:49:04,719 INFO L78 Accepts]: Start accepts. Automaton has 24005 states and 26227 transitions. Word has length 389 [2018-10-23 20:49:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:49:04,720 INFO L481 AbstractCegarLoop]: Abstraction has 24005 states and 26227 transitions. [2018-10-23 20:49:04,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:49:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand 24005 states and 26227 transitions. [2018-10-23 20:49:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-10-23 20:49:04,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:49:04,737 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:49:04,737 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:49:04,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:49:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1689803181, now seen corresponding path program 1 times [2018-10-23 20:49:04,738 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:49:04,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:49:04,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:04,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:04,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:49:05,516 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-23 20:49:05,836 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-10-23 20:49:06,605 WARN L179 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-10-23 20:49:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 310 proven. 83 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-10-23 20:49:06,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:49:06,828 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:49:06,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:49:06,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:49:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 310 proven. 83 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-10-23 20:49:07,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:49:07,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-23 20:49:07,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:49:07,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:49:07,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:49:07,666 INFO L87 Difference]: Start difference. First operand 24005 states and 26227 transitions. Second operand 9 states. [2018-10-23 20:49:07,917 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 20:49:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:49:18,726 INFO L93 Difference]: Finished difference Result 49878 states and 54410 transitions. [2018-10-23 20:49:18,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:49:18,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 409 [2018-10-23 20:49:18,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:49:18,763 INFO L225 Difference]: With dead ends: 49878 [2018-10-23 20:49:18,764 INFO L226 Difference]: Without dead ends: 26301 [2018-10-23 20:49:18,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 407 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:49:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26301 states. [2018-10-23 20:49:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26301 to 26135. [2018-10-23 20:49:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26135 states. [2018-10-23 20:49:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26135 states to 26135 states and 28426 transitions. [2018-10-23 20:49:19,125 INFO L78 Accepts]: Start accepts. Automaton has 26135 states and 28426 transitions. Word has length 409 [2018-10-23 20:49:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:49:19,126 INFO L481 AbstractCegarLoop]: Abstraction has 26135 states and 28426 transitions. [2018-10-23 20:49:19,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:49:19,126 INFO L276 IsEmpty]: Start isEmpty. Operand 26135 states and 28426 transitions. [2018-10-23 20:49:19,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-10-23 20:49:19,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:49:19,143 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-10-23 20:49:19,144 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:49:19,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:49:19,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1252882665, now seen corresponding path program 1 times [2018-10-23 20:49:19,144 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:49:19,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:49:19,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:19,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:19,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:49:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 513 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-23 20:49:19,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:49:19,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:49:19,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:49:19,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:49:19,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:49:19,937 INFO L87 Difference]: Start difference. First operand 26135 states and 28426 transitions. Second operand 4 states. [2018-10-23 20:49:24,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:49:24,361 INFO L93 Difference]: Finished difference Result 71491 states and 77929 transitions. [2018-10-23 20:49:24,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:49:24,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 490 [2018-10-23 20:49:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:49:24,418 INFO L225 Difference]: With dead ends: 71491 [2018-10-23 20:49:24,418 INFO L226 Difference]: Without dead ends: 46210 [2018-10-23 20:49:24,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:49:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46210 states. [2018-10-23 20:49:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46210 to 27400. [2018-10-23 20:49:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27400 states. [2018-10-23 20:49:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27400 states to 27400 states and 29744 transitions. [2018-10-23 20:49:24,853 INFO L78 Accepts]: Start accepts. Automaton has 27400 states and 29744 transitions. Word has length 490 [2018-10-23 20:49:24,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:49:24,854 INFO L481 AbstractCegarLoop]: Abstraction has 27400 states and 29744 transitions. [2018-10-23 20:49:24,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:49:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 27400 states and 29744 transitions. [2018-10-23 20:49:24,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2018-10-23 20:49:24,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:49:24,885 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:49:24,886 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:49:24,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:49:24,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1944185802, now seen corresponding path program 1 times [2018-10-23 20:49:24,886 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:49:24,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:49:24,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:24,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:24,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:49:25,712 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-23 20:49:26,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 619 proven. 501 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-23 20:49:26,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:49:26,743 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:49:26,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:49:26,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:49:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2018-10-23 20:49:27,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:49:27,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-23 20:49:27,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 20:49:27,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 20:49:27,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:49:27,443 INFO L87 Difference]: Start difference. First operand 27400 states and 29744 transitions. Second operand 10 states. [2018-10-23 20:49:51,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:49:51,359 INFO L93 Difference]: Finished difference Result 72958 states and 79667 transitions. [2018-10-23 20:49:51,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 20:49:51,360 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 596 [2018-10-23 20:49:51,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:49:51,425 INFO L225 Difference]: With dead ends: 72958 [2018-10-23 20:49:51,425 INFO L226 Difference]: Without dead ends: 44701 [2018-10-23 20:49:51,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 603 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-10-23 20:49:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44701 states. [2018-10-23 20:49:51,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44701 to 37204. [2018-10-23 20:49:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37204 states. [2018-10-23 20:49:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37204 states to 37204 states and 40189 transitions. [2018-10-23 20:49:51,941 INFO L78 Accepts]: Start accepts. Automaton has 37204 states and 40189 transitions. Word has length 596 [2018-10-23 20:49:51,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:49:51,942 INFO L481 AbstractCegarLoop]: Abstraction has 37204 states and 40189 transitions. [2018-10-23 20:49:51,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 20:49:51,942 INFO L276 IsEmpty]: Start isEmpty. Operand 37204 states and 40189 transitions. [2018-10-23 20:49:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2018-10-23 20:49:51,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:49:51,997 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:49:51,997 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:49:51,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:49:51,998 INFO L82 PathProgramCache]: Analyzing trace with hash -99291151, now seen corresponding path program 1 times [2018-10-23 20:49:51,998 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:49:51,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:49:51,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:51,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:51,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:49:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1466 backedges. 883 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2018-10-23 20:49:53,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:49:53,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:49:53,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:49:53,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:49:53,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:49:53,456 INFO L87 Difference]: Start difference. First operand 37204 states and 40189 transitions. Second operand 5 states. [2018-10-23 20:49:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:49:58,382 INFO L93 Difference]: Finished difference Result 85070 states and 92302 transitions. [2018-10-23 20:49:58,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:49:58,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1048 [2018-10-23 20:49:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:49:58,444 INFO L225 Difference]: With dead ends: 85070 [2018-10-23 20:49:58,444 INFO L226 Difference]: Without dead ends: 49999 [2018-10-23 20:49:58,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:49:58,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49999 states. [2018-10-23 20:49:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49999 to 37195. [2018-10-23 20:49:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37195 states. [2018-10-23 20:49:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37195 states to 37195 states and 40295 transitions. [2018-10-23 20:49:59,028 INFO L78 Accepts]: Start accepts. Automaton has 37195 states and 40295 transitions. Word has length 1048 [2018-10-23 20:49:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:49:59,029 INFO L481 AbstractCegarLoop]: Abstraction has 37195 states and 40295 transitions. [2018-10-23 20:49:59,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:49:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 37195 states and 40295 transitions. [2018-10-23 20:49:59,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2018-10-23 20:49:59,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:49:59,080 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:49:59,080 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:49:59,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:49:59,081 INFO L82 PathProgramCache]: Analyzing trace with hash 67492968, now seen corresponding path program 1 times [2018-10-23 20:49:59,081 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:49:59,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:49:59,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:59,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:59,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:50:00,294 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-10-23 20:50:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2535 backedges. 1293 proven. 404 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2018-10-23 20:50:01,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:50:01,307 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:50:01,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:50:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:50:01,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:50:01,937 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2018-10-23 20:50:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2535 backedges. 1975 proven. 50 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2018-10-23 20:50:05,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:50:05,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2018-10-23 20:50:05,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 20:50:05,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 20:50:05,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:50:05,669 INFO L87 Difference]: Start difference. First operand 37195 states and 40295 transitions. Second operand 10 states. [2018-10-23 20:50:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:50:23,172 INFO L93 Difference]: Finished difference Result 78504 states and 84936 transitions. [2018-10-23 20:50:23,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 20:50:23,172 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1128 [2018-10-23 20:50:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:50:23,218 INFO L225 Difference]: With dead ends: 78504 [2018-10-23 20:50:23,218 INFO L226 Difference]: Without dead ends: 43441 [2018-10-23 20:50:23,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 1139 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2018-10-23 20:50:23,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43441 states. [2018-10-23 20:50:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43441 to 37181. [2018-10-23 20:50:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37181 states. [2018-10-23 20:50:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37181 states to 37181 states and 39124 transitions. [2018-10-23 20:50:23,720 INFO L78 Accepts]: Start accepts. Automaton has 37181 states and 39124 transitions. Word has length 1128 [2018-10-23 20:50:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:50:23,721 INFO L481 AbstractCegarLoop]: Abstraction has 37181 states and 39124 transitions. [2018-10-23 20:50:23,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 20:50:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 37181 states and 39124 transitions. [2018-10-23 20:50:23,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1217 [2018-10-23 20:50:23,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:50:23,760 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:50:23,761 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:50:23,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:50:23,762 INFO L82 PathProgramCache]: Analyzing trace with hash -295432022, now seen corresponding path program 1 times [2018-10-23 20:50:23,762 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:50:23,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:50:23,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:50:23,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:50:23,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:50:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:50:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 990 proven. 0 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2018-10-23 20:50:24,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:50:24,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:50:24,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:50:24,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:50:24,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:50:24,870 INFO L87 Difference]: Start difference. First operand 37181 states and 39124 transitions. Second operand 3 states. [2018-10-23 20:50:27,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:50:27,430 INFO L93 Difference]: Finished difference Result 78193 states and 82403 transitions. [2018-10-23 20:50:27,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:50:27,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1216 [2018-10-23 20:50:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:50:27,478 INFO L225 Difference]: With dead ends: 78193 [2018-10-23 20:50:27,478 INFO L226 Difference]: Without dead ends: 41866 [2018-10-23 20:50:27,502 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 [2018-10-23 20:50:27,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41866 states. [2018-10-23 20:50:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41866 to 41862. [2018-10-23 20:50:27,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41862 states. [2018-10-23 20:50:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41862 states to 41862 states and 43950 transitions. [2018-10-23 20:50:27,955 INFO L78 Accepts]: Start accepts. Automaton has 41862 states and 43950 transitions. Word has length 1216 [2018-10-23 20:50:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:50:27,955 INFO L481 AbstractCegarLoop]: Abstraction has 41862 states and 43950 transitions. [2018-10-23 20:50:27,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:50:27,956 INFO L276 IsEmpty]: Start isEmpty. Operand 41862 states and 43950 transitions. [2018-10-23 20:50:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1239 [2018-10-23 20:50:27,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:50:27,994 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:50:27,994 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:50:27,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:50:27,995 INFO L82 PathProgramCache]: Analyzing trace with hash -724557224, now seen corresponding path program 1 times [2018-10-23 20:50:27,995 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:50:27,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:50:27,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:50:27,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:50:27,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:50:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:50:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3265 backedges. 2543 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2018-10-23 20:50:30,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:50:30,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:50:30,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:50:30,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:50:30,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:50:30,105 INFO L87 Difference]: Start difference. First operand 41862 states and 43950 transitions. Second operand 5 states. [2018-10-23 20:50:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:50:37,787 INFO L93 Difference]: Finished difference Result 87555 states and 92175 transitions. [2018-10-23 20:50:37,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:50:37,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1238 [2018-10-23 20:50:37,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:50:37,837 INFO L225 Difference]: With dead ends: 87555 [2018-10-23 20:50:37,837 INFO L226 Difference]: Without dead ends: 50384 [2018-10-23 20:50:37,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:50:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50384 states. [2018-10-23 20:50:38,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50384 to 45689. [2018-10-23 20:50:38,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45689 states. [2018-10-23 20:50:38,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45689 states to 45689 states and 47897 transitions. [2018-10-23 20:50:38,311 INFO L78 Accepts]: Start accepts. Automaton has 45689 states and 47897 transitions. Word has length 1238 [2018-10-23 20:50:38,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:50:38,311 INFO L481 AbstractCegarLoop]: Abstraction has 45689 states and 47897 transitions. [2018-10-23 20:50:38,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:50:38,311 INFO L276 IsEmpty]: Start isEmpty. Operand 45689 states and 47897 transitions. [2018-10-23 20:50:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1244 [2018-10-23 20:50:38,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:50:38,348 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:50:38,348 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:50:38,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:50:38,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1842489281, now seen corresponding path program 1 times [2018-10-23 20:50:38,349 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:50:38,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:50:38,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:50:38,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:50:38,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:50:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:50:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 2447 proven. 116 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2018-10-23 20:50:40,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:50:40,326 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:50:40,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:50:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:50:40,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:50:40,890 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 16 [2018-10-23 20:50:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 1902 proven. 0 refuted. 0 times theorem prover too weak. 1398 trivial. 0 not checked. [2018-10-23 20:50:42,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:50:42,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2018-10-23 20:50:42,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:50:42,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:50:42,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:50:42,637 INFO L87 Difference]: Start difference. First operand 45689 states and 47897 transitions. Second operand 7 states. [2018-10-23 20:51:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:51:10,233 INFO L93 Difference]: Finished difference Result 107581 states and 113182 transitions. [2018-10-23 20:51:10,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 20:51:10,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1243 [2018-10-23 20:51:10,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:51:10,298 INFO L225 Difference]: With dead ends: 107581 [2018-10-23 20:51:10,298 INFO L226 Difference]: Without dead ends: 62745 [2018-10-23 20:51:10,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1265 GetRequests, 1251 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-10-23 20:51:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62745 states. [2018-10-23 20:51:10,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62745 to 53347. [2018-10-23 20:51:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53347 states. [2018-10-23 20:51:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53347 states to 53347 states and 55535 transitions. [2018-10-23 20:51:10,894 INFO L78 Accepts]: Start accepts. Automaton has 53347 states and 55535 transitions. Word has length 1243 [2018-10-23 20:51:10,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:51:10,895 INFO L481 AbstractCegarLoop]: Abstraction has 53347 states and 55535 transitions. [2018-10-23 20:51:10,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:51:10,895 INFO L276 IsEmpty]: Start isEmpty. Operand 53347 states and 55535 transitions. [2018-10-23 20:51:10,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1380 [2018-10-23 20:51:10,929 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:51:10,930 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:51:10,930 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:51:10,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:51:10,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1084048176, now seen corresponding path program 1 times [2018-10-23 20:51:10,931 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:51:10,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:51:10,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:51:10,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:51:10,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:51:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:51:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 69 proven. 1813 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-23 20:51:14,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:51:14,896 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:51:14,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:51:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:51:15,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:51:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 1151 proven. 0 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2018-10-23 20:51:16,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:51:16,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2018-10-23 20:51:16,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 20:51:16,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 20:51:16,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:51:16,700 INFO L87 Difference]: Start difference. First operand 53347 states and 55535 transitions. Second operand 10 states. [2018-10-23 20:51:29,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:51:29,133 INFO L93 Difference]: Finished difference Result 143821 states and 149941 transitions. [2018-10-23 20:51:29,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 20:51:29,133 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1379 [2018-10-23 20:51:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:51:29,135 INFO L225 Difference]: With dead ends: 143821 [2018-10-23 20:51:29,135 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 20:51:29,172 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1387 GetRequests, 1377 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:51:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 20:51:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 20:51:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 20:51:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 20:51:29,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1379 [2018-10-23 20:51:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:51:29,173 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 20:51:29,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 20:51:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 20:51:29,174 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 20:51:29,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 20:51:30,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,218 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,226 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,234 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,256 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,292 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,300 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,448 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,644 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,898 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:30,917 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:31,029 WARN L179 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 829 DAG size of output: 419 [2018-10-23 20:51:31,233 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:31,788 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,291 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,454 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,530 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,563 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,599 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,617 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,627 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,634 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,677 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,681 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,687 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,694 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,700 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,704 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,717 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,722 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,763 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,793 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,840 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,890 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,896 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,942 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:32,980 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,010 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,016 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,049 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,090 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,224 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,285 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,312 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,327 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,599 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:33,824 WARN L179 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 997 DAG size of output: 604 [2018-10-23 20:51:33,955 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,469 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,581 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,664 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,697 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,701 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,720 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,725 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,743 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,750 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,756 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,782 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,787 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,798 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,811 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,880 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,912 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,960 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,973 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,993 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:34,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,025 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,053 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,058 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,145 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,187 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,211 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,216 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,246 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,246 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:51:35,451 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-10-23 20:51:35,547 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-23 20:51:35,549 INFO L168 Benchmark]: Toolchain (without parser) took 229912.17 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 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 2.4 GB. Max. memory is 7.1 GB. [2018-10-23 20:51:35,550 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:51:35,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1525.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:51:35,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 505.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -873.6 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2018-10-23 20:51:35,553 INFO L168 Benchmark]: Boogie Preprocessor took 285.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:51:35,554 INFO L168 Benchmark]: RCFGBuilder took 9081.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 479.4 MB). Peak memory consumption was 479.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:51:35,555 INFO L168 Benchmark]: TraceAbstraction took 218509.10 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.6 GB in the beginning and 3.0 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-23 20:51:35,563 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1525.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 505.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -873.6 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 285.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9081.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 479.4 MB). Peak memory consumption was 479.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218509.10 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.6 GB in the beginning and 3.0 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 194]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 909. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown